Merge tag 'fbdev-v4.18' of git://github.com/bzolnier/linux

Pull fbdev updates from Bartlomiej Zolnierkiewicz:
"There is nothing really major here, few small fixes, some cleanups and
dead drivers removal:

- mark omapfb drivers as orphans in MAINTAINERS file (Tomi Valkeinen)

- add missing module license tags to omap/omapfb driver (Arnd
Bergmann)

- add missing GPIOLIB dependendy to omap2/omapfb driver (Arnd
Bergmann)

- convert savagefb, aty128fb & radeonfb drivers to use msleep & co.
(Jia-Ju Bai)

- allow COMPILE_TEST build for viafb driver (media part was reviewed
by media subsystem Maintainer)

- remove unused MERAM support from sh_mobile_lcdcfb and shmob-drm
drivers (drm parts were acked by shmob-drm driver Maintainer)

- remove unused auo_k190xfb drivers

- misc cleanups (Souptick Joarder, Wolfram Sang, Markus Elfring, Andy
Shevchenko, Colin Ian King)"

* tag 'fbdev-v4.18' of git://github.com/bzolnier/linux: (26 commits)
fb_omap2: add gpiolib dependency
video/omap: add module license tags
MAINTAINERS: make omapfb orphan
video: fbdev: pxafb: match_string() conversion fixup
video: fbdev: nvidia: fix spelling mistake: "scaleing" -> "scaling"
video: fbdev: fix spelling mistake: "frambuffer" -> "framebuffer"
video: fbdev: pxafb: Convert to use match_string() helper
video: fbdev: via: allow COMPILE_TEST build
video: fbdev: remove unused sh_mobile_meram driver
drm: shmobile: remove unused MERAM support
video: fbdev: sh_mobile_lcdcfb: remove unused MERAM support
video: fbdev: remove unused auo_k190xfb drivers
video: omap: Improve a size determination in omapfb_do_probe()
video: sm501fb: Improve a size determination in sm501fb_probe()
video: fbdev-MMP: Improve a size determination in path_init()
video: fbdev-MMP: Delete an error message for a failed memory allocation in two functions
video: auo_k190x: Delete an error message for a failed memory allocation in auok190x_common_probe()
video: sh_mobile_lcdcfb: Delete an error message for a failed memory allocation in two functions
video: sh_mobile_meram: Delete an error message for a failed memory allocation in sh_mobile_meram_probe()
video: fbdev: sh_mobile_meram: Drop SUPERH platform dependency
...

MAINTAINERS

···
 F:	arch/arm/boot/dts/*dra7*
 
 OMAP DISPLAY SUBSYSTEM and FRAMEBUFFER SUPPORT (DSS2)
-M:	Tomi Valkeinen <[e-mail]>
 L:	[e-mail]
 L:	[e-mail]
-S:	Maintained
+S:	Orphan
 F:	drivers/video/fbdev/omap2/
 F:	Documentation/arm/OMAP/DSS
 
 OMAP FRAMEBUFFER SUPPORT
-M:	Tomi Valkeinen <[e-mail]>
 L:	[e-mail]
 L:	[e-mail]
-S:	Maintained
+S:	Orphan
 F:	drivers/video/fbdev/omap/
 
 OMAP GENERAL PURPOSE MEMORY CONTROLLER SUPPORT

drivers/gpu/drm/shmobile/Kconfig

···
 	tristate "DRM Support for SH Mobile"
 	depends on DRM && ARM
 	depends on ARCH_SHMOBILE || COMPILE_TEST
-	depends on FB_SH_MOBILE_MERAM || !FB_SH_MOBILE_MERAM
 	select BACKLIGHT_CLASS_DEVICE
 	select BACKLIGHT_LCD_SUPPORT
 	select DRM_KMS_HELPER

drivers/gpu/drm/shmobile/shmob_drm_crtc.c

···
 #include <drm/drm_gem_cma_helper.h>
 #include <drm/drm_plane_helper.h>
 
-#include <video/sh_mobile_meram.h>
-
 #include "shmob_drm_backlight.h"
 #include "shmob_drm_crtc.h"
 #include "shmob_drm_drv.h"
···
 		if (ret < 0)
 			return ret;
 	}
-#if 0
-	if (sdev->meram_dev && sdev->meram_dev->pdev)
-		pm_runtime_get_sync(&sdev->meram_dev->pdev->dev);
-#endif
 
 	return 0;
 }
 
 static void shmob_drm_clk_off(struct shmob_drm_device *sdev)
 {
-#if 0
-	if (sdev->meram_dev && sdev->meram_dev->pdev)
-		pm_runtime_put_sync(&sdev->meram_dev->pdev->dev);
-#endif
 	if (sdev->clock)
 		clk_disable_unprepare(sdev->clock);
 }
···
 	if (!scrtc->started)
 		return;
 
-	/* Disable the MERAM cache. */
-	if (scrtc->cache) {
-		sh_mobile_meram_cache_free(sdev->meram, scrtc->cache);
-		scrtc->cache = NULL;
-	}
-
 	/* Stop the LCDC. */
 	shmob_drm_crtc_start_stop(scrtc, false);
 
···
 {
 	struct drm_crtc *crtc = &scrtc->crtc;
 	struct drm_framebuffer *fb = crtc->primary->fb;
-	struct shmob_drm_device *sdev = crtc->dev->dev_private;
 	struct drm_gem_cma_object *gem;
 	unsigned int bpp;
 
···
 			      + y / (bpp == 4 ? 2 : 1) * fb->pitches[1]
 			      + x * (bpp == 16 ? 2 : 1);
 	}
-
-	if (scrtc->cache)
-		sh_mobile_meram_cache_update(sdev->meram, scrtc->cache,
-					     scrtc->dma[0], scrtc->dma[1],
-					     &scrtc->dma[0], &scrtc->dma[1]);
 }
 
 static void shmob_drm_crtc_update_base(struct shmob_drm_crtc *scrtc)
···
 {
 	struct shmob_drm_crtc *scrtc = to_shmob_crtc(crtc);
 	struct shmob_drm_device *sdev = crtc->dev->dev_private;
-	const struct sh_mobile_meram_cfg *mdata = sdev->pdata->meram;
 	const struct shmob_drm_format_info *format;
-	void *cache;
 
 	format = shmob_drm_format_info(crtc->primary->fb->format->format);
 	if (format == NULL) {
···
 
 	scrtc->format = format;
 	scrtc->line_size = crtc->primary->fb->pitches[0];
-
-	if (sdev->meram) {
-		/* Enable MERAM cache if configured. We need to de-init
-		 * configured ICBs before we can re-initialize them.
-		 */
-		if (scrtc->cache) {
-			sh_mobile_meram_cache_free(sdev->meram, scrtc->cache);
-			scrtc->cache = NULL;
-		}
-
-		cache = sh_mobile_meram_cache_alloc(sdev->meram, mdata,
-						    crtc->primary->fb->pitches[0],
-						    adjusted_mode->vdisplay,
-						    format->meram,
-						    &scrtc->line_size);
-		if (!IS_ERR(cache))
-			scrtc->cache = cache;
-	}
 
 	shmob_drm_crtc_compute_base(scrtc, x, y);
 

drivers/gpu/drm/shmobile/shmob_drm_crtc.h

···
 	int dpms;
 
 	const struct shmob_drm_format_info *format;
-	void *cache;
 	unsigned long dma[2];
 	unsigned int line_size;
 	bool started;

drivers/gpu/drm/shmobile/shmob_drm_drv.h

···
 struct clk;
 struct device;
 struct drm_device;
-struct sh_mobile_meram_info;
 
 struct shmob_drm_device {
 	struct device *dev;
···
 
 	void __iomem *mmio;
 	struct clk *clock;
-	struct sh_mobile_meram_info *meram;
 	u32 lddckr;
 	u32 ldmt1r;
 

drivers/gpu/drm/shmobile/shmob_drm_kms.c

···
 #include <drm/drm_gem_cma_helper.h>
 #include <drm/drm_gem_framebuffer_helper.h>
 
-#include <video/sh_mobile_meram.h>
-
 #include "shmob_drm_crtc.h"
 #include "shmob_drm_drv.h"
 #include "shmob_drm_kms.h"
···
 		.bpp = 16,
 		.yuv = false,
 		.lddfr = LDDFR_PKF_RGB16,
-		.meram = SH_MOBILE_MERAM_PF_RGB,
 	}, {
 		.fourcc = DRM_FORMAT_RGB888,
 		.bpp = 24,
 		.yuv = false,
 		.lddfr = LDDFR_PKF_RGB24,
-		.meram = SH_MOBILE_MERAM_PF_RGB,
 	}, {
 		.fourcc = DRM_FORMAT_ARGB8888,
 		.bpp = 32,
 		.yuv = false,
 		.lddfr = LDDFR_PKF_ARGB32,
-		.meram = SH_MOBILE_MERAM_PF_RGB,
 	}, {
 		.fourcc = DRM_FORMAT_NV12,
 		.bpp = 12,
 		.yuv = true,
 		.lddfr = LDDFR_CC | LDDFR_YF_420,
-		.meram = SH_MOBILE_MERAM_PF_NV,
 	}, {
 		.fourcc = DRM_FORMAT_NV21,
 		.bpp = 12,
 		.yuv = true,
 		.lddfr = LDDFR_CC | LDDFR_YF_420,
-		.meram = SH_MOBILE_MERAM_PF_NV,
 	}, {
 		.fourcc = DRM_FORMAT_NV16,
 		.bpp = 16,
 		.yuv = true,
 		.lddfr = LDDFR_CC | LDDFR_YF_422,
-		.meram = SH_MOBILE_MERAM_PF_NV,
 	}, {
 		.fourcc = DRM_FORMAT_NV61,
 		.bpp = 16,
 		.yuv = true,
 		.lddfr = LDDFR_CC | LDDFR_YF_422,
-		.meram = SH_MOBILE_MERAM_PF_NV,
 	}, {
 		.fourcc = DRM_FORMAT_NV24,
 		.bpp = 24,
 		.yuv = true,
 		.lddfr = LDDFR_CC | LDDFR_YF_444,
-		.meram = SH_MOBILE_MERAM_PF_NV24,
 	}, {
 		.fourcc = DRM_FORMAT_NV42,
 		.bpp = 24,
 		.yuv = true,
 		.lddfr = LDDFR_CC | LDDFR_YF_444,
-		.meram = SH_MOBILE_MERAM_PF_NV24,
 	},
 };
 

drivers/gpu/drm/shmobile/shmob_drm_kms.h

···
 	unsigned int bpp;
 	bool yuv;
 	u32 lddfr;
-	unsigned int meram;
 };
 
 const struct shmob_drm_format_info *shmob_drm_format_info(u32 fourcc);

drivers/gpu/drm/shmobile/shmob_drm_plane.c

···
 #include <drm/drm_fb_cma_helper.h>
 #include <drm/drm_gem_cma_helper.h>
 
-#include <video/sh_mobile_meram.h>
-
 #include "shmob_drm_drv.h"
 #include "shmob_drm_kms.h"
 #include "shmob_drm_plane.h"

drivers/media/platform/via-camera.c

···
 #include <linux/via-core.h>
 #include <linux/via-gpio.h>
 #include <linux/via_i2c.h>
+
+#ifdef CONFIG_X86
 #include <asm/olpc.h>
+#else
+#define machine_is_olpc(x) 0
+#endif
 
 #include "via-camera.h"
 

drivers/video/fbdev/Kconfig

···
 
 config FB_VIA
        tristate "VIA UniChrome (Pro) and Chrome9 display support"
-       depends on FB && PCI && X86 && GPIOLIB && I2C
+       depends on FB && PCI && GPIOLIB && I2C && (X86 || COMPILE_TEST)
        select FB_CFB_FILLRECT
        select FB_CFB_COPYAREA
        select FB_CFB_IMAGEBLIT
···
 config FB_SH_MOBILE_LCDC
 	tristate "SuperH Mobile LCDC framebuffer support"
 	depends on FB && (SUPERH || ARCH_RENESAS) && HAVE_CLK
-	depends on FB_SH_MOBILE_MERAM || !FB_SH_MOBILE_MERAM
 	select FB_SYS_FILLRECT
 	select FB_SYS_COPYAREA
 	select FB_SYS_IMAGEBLIT
···
 	  and could also have been called by other names when coupled with
 	  a bridge adapter.
 
-config FB_AUO_K190X
-	tristate "AUO-K190X EPD controller support"
-	depends on FB
-	select FB_SYS_FILLRECT
-	select FB_SYS_COPYAREA
-	select FB_SYS_IMAGEBLIT
-	select FB_SYS_FOPS
-	select FB_DEFERRED_IO
-	help
-	  Provides support for epaper controllers from the K190X series
-	  of AUO. These controllers can be used to drive epaper displays
-	  from Sipix.
-
-	  This option enables the common support, shared by the individual
-	  controller drivers. You will also have to enable the driver
-	  for the controller type used in your device.
-
-config FB_AUO_K1900
-	tristate "AUO-K1900 EPD controller support"
-	depends on FB && FB_AUO_K190X
-	help
-	  This driver implements support for the AUO K1900 epd-controller.
-	  This controller can drive Sipix epaper displays but can only do
-	  serial updates, reducing the number of possible frames per second.
-
-config FB_AUO_K1901
-	tristate "AUO-K1901 EPD controller support"
-	depends on FB && FB_AUO_K190X
-	help
-	  This driver implements support for the AUO K1901 epd-controller.
-	  This controller can drive Sipix epaper displays and supports
-	  concurrent updates, making higher frames per second possible.
-
 config FB_JZ4740
 	tristate "JZ4740 LCD framebuffer support"
 	depends on FB && MACH_JZ4740
···
 source "drivers/video/fbdev/omap/Kconfig"
 source "drivers/video/fbdev/omap2/Kconfig"
 source "drivers/video/fbdev/mmp/Kconfig"
-
-config FB_SH_MOBILE_MERAM
-	tristate "SuperH Mobile MERAM read ahead support"
-	depends on (SUPERH || ARCH_SHMOBILE)
-	select GENERIC_ALLOCATOR
-	---help---
-	  Enable MERAM support for the SuperH controller.
-
-	  This will allow for caching of the framebuffer to provide more
-	  reliable access under heavy main memory bus traffic situations.
-	  Up to 4 memory channels can be configured, allowing 4 RGB or
-	  2 YCbCr framebuffers to be configured.
 
 config FB_SSD1307
 	tristate "Solomon SSD1307 framebuffer support"

drivers/video/fbdev/Makefile

···
 obj-$(CONFIG_FB_MAXINE)		  += maxinefb.o
 obj-$(CONFIG_FB_METRONOME)        += metronomefb.o
 obj-$(CONFIG_FB_BROADSHEET)       += broadsheetfb.o
-obj-$(CONFIG_FB_AUO_K190X)	  += auo_k190x.o
-obj-$(CONFIG_FB_AUO_K1900)	  += auo_k1900fb.o
-obj-$(CONFIG_FB_AUO_K1901)	  += auo_k1901fb.o
 obj-$(CONFIG_FB_S1D13XXX)	  += s1d13xxxfb.o
 obj-$(CONFIG_FB_SH7760)		  += sh7760fb.o
 obj-$(CONFIG_FB_IMX)              += imxfb.o
···
 obj-$(CONFIG_FB_UDL)		  += udlfb.o
 obj-$(CONFIG_FB_SMSCUFX)	  += smscufx.o
 obj-$(CONFIG_FB_XILINX)           += xilinxfb.o
-obj-$(CONFIG_FB_SH_MOBILE_MERAM)  += sh_mobile_meram.o
 obj-$(CONFIG_FB_SH_MOBILE_LCDC)	  += sh_mobile_lcdcfb.o
 obj-$(CONFIG_FB_OMAP)             += omap/
 obj-y                             += omap2/

drivers/video/fbdev/aty/aty128fb.c

···
 		(void)aty_ld_pll(POWER_MANAGEMENT);
 		aty_st_le32(BUS_CNTL1, 0x00000010);
 		aty_st_le32(MEM_POWER_MISC, 0x0c830000);
-		mdelay(100);
+		msleep(100);
 
 		/* Switch PCI power management to D2 */
 		pci_set_power_state(pdev, PCI_D2);

drivers/video/fbdev/aty/radeon_pm.c

···
 		 * it, we'll restore the dynamic clocks state on wakeup
 		 */
 		radeon_pm_disable_dynamic_mode(rinfo);
-		mdelay(50);
+		msleep(50);
 		radeon_pm_save_regs(rinfo, 1);
 
 		if (rinfo->is_mobility && !(rinfo->pm_mode & radeon_pm_d2)) {
 			/* Switch off LVDS interface */
-			mdelay(1);
+			usleep_range(1000, 2000);
 			OUTREG(LVDS_GEN_CNTL, INREG(LVDS_GEN_CNTL) & ~(LVDS_BL_MOD_EN));
-			mdelay(1);
+			usleep_range(1000, 2000);
 			OUTREG(LVDS_GEN_CNTL, INREG(LVDS_GEN_CNTL) & ~(LVDS_EN | LVDS_ON));
 			OUTREG(LVDS_PLL_CNTL, (INREG(LVDS_PLL_CNTL) & ~30000) | 0x20000);
-			mdelay(20);
+			msleep(20);
 			OUTREG(LVDS_GEN_CNTL, INREG(LVDS_GEN_CNTL) & ~(LVDS_DIGON));
 		}
 		pci_disable_device(pdev);

drivers/video/fbdev/au1100fb.c

···
 					    PAGE_ALIGN(fbdev->fb_len),
 					    &fbdev->fb_phys, GFP_KERNEL);
 	if (!fbdev->fb_mem) {
-		print_err("fail to allocate frambuffer (size: %dK))",
+		print_err("fail to allocate framebuffer (size: %dK))",
 			  fbdev->fb_len / 1024);
 		return -ENOMEM;
 	}

drivers/video/fbdev/au1200fb.c

···
 				&fbdev->fb_phys, GFP_KERNEL,
 				DMA_ATTR_NON_CONSISTENT);
 		if (!fbdev->fb_mem) {
-			print_err("fail to allocate frambuffer (size: %dK))",
+			print_err("fail to allocate framebuffer (size: %dK))",
 				  fbdev->fb_len / 1024);
 			ret = -ENOMEM;
 			goto failed;

drivers/video/fbdev/auo_k1900fb.c

···
-/*
- * auok190xfb.c -- FB driver for AUO-K1900 controllers
- *
- * Copyright (C) 2011, 2012 Heiko Stuebner <[e-mail]>
- *
- * based on broadsheetfb.c
- *
- * Copyright (C) 2008, Jaya Kumar
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
- *
- * Layout is based on skeletonfb.c by James Simmons and Geert Uytterhoeven.
- *
- * This driver is written to be used with the AUO-K1900 display controller.
- *
- * It is intended to be architecture independent. A board specific driver
- * must be used to perform all the physical IO interactions.
- *
- * The controller supports different update modes:
- * mode0+1 16 step gray (4bit)
- * mode2 4 step gray (2bit) - FIXME: add strange refresh
- * mode3 2 step gray (1bit) - FIXME: add strange refresh
- * mode4 handwriting mode (strange behaviour)
- * mode5 automatic selection of update mode
- */
-
-#include <linux/module.h>
-#include <linux/kernel.h>
-#include <linux/errno.h>
-#include <linux/string.h>
-#include <linux/mm.h>
-#include <linux/slab.h>
-#include <linux/delay.h>
-#include <linux/interrupt.h>
-#include <linux/fb.h>
-#include <linux/init.h>
-#include <linux/platform_device.h>
-#include <linux/list.h>
-#include <linux/firmware.h>
-#include <linux/gpio.h>
-#include <linux/pm_runtime.h>
-
-#include <video/auo_k190xfb.h>
-
-#include "auo_k190x.h"
-
-/*
- * AUO-K1900 specific commands
- */
-
-#define AUOK1900_CMD_PARTIALDISP	0x1001
-#define AUOK1900_CMD_ROTATION		0x1006
-#define AUOK1900_CMD_LUT_STOP		0x1009
-
-#define AUOK1900_INIT_TEMP_AVERAGE	(1 << 13)
-#define AUOK1900_INIT_ROTATE(_x)	((_x & 0x3) << 10)
-#define AUOK1900_INIT_RESOLUTION(_res)	((_res & 0x7) << 2)
-
-static void auok1900_init(struct auok190xfb_par *par)
-{
-	struct device *dev = par->info->device;
-	struct auok190x_board *board = par->board;
-	u16 init_param = 0;
-
-	pm_runtime_get_sync(dev);
-
-	init_param |= AUOK1900_INIT_TEMP_AVERAGE;
-	init_param |= AUOK1900_INIT_ROTATE(par->rotation);
-	init_param |= AUOK190X_INIT_INVERSE_WHITE;
-	init_param |= AUOK190X_INIT_FORMAT0;
-	init_param |= AUOK1900_INIT_RESOLUTION(par->resolution);
-	init_param |= AUOK190X_INIT_SHIFT_RIGHT;
-
-	auok190x_send_cmdargs(par, AUOK190X_CMD_INIT, 1, &init_param);
-
-	/* let the controller finish */
-	board->wait_for_rdy(par);
-
-	pm_runtime_mark_last_busy(dev);
-	pm_runtime_put_autosuspend(dev);
-}
-
-static void auok1900_update_region(struct auok190xfb_par *par, int mode,
-						u16 y1, u16 y2)
-{
-	struct device *dev = par->info->device;
-	unsigned char *buf = (unsigned char *)par->info->screen_base;
-	int xres = par->info->var.xres;
-	int line_length = par->info->fix.line_length;
-	u16 args[4];
-
-	pm_runtime_get_sync(dev);
-
-	mutex_lock(&(par->io_lock));
-
-	/* y1 and y2 must be a multiple of 2 so drop the lowest bit */
-	y1 &= 0xfffe;
-	y2 &= 0xfffe;
-
-	dev_dbg(dev, "update (x,y,w,h,mode)=(%d,%d,%d,%d,%d)\n",
-		1, y1+1, xres, y2-y1, mode);
-
-	/* to FIX handle different partial update modes */
-	args[0] = mode | 1;
-	args[1] = y1 + 1;
-	args[2] = xres;
-	args[3] = y2 - y1;
-	buf += y1 * line_length;
-	auok190x_send_cmdargs_pixels(par, AUOK1900_CMD_PARTIALDISP, 4, args,
-				     ((y2 - y1) * line_length)/2, (u16 *) buf);
-	auok190x_send_command(par, AUOK190X_CMD_DATA_STOP);
-
-	par->update_cnt++;
-
-	mutex_unlock(&(par->io_lock));
-
-	pm_runtime_mark_last_busy(dev);
-	pm_runtime_put_autosuspend(dev);
-}
-
-static void auok1900fb_dpy_update_pages(struct auok190xfb_par *par,
-						u16 y1, u16 y2)
-{
-	int mode;
-
-	if (par->update_mode < 0) {
-		mode = AUOK190X_UPDATE_MODE(1);
-		par->last_mode = -1;
-	} else {
-		mode = AUOK190X_UPDATE_MODE(par->update_mode);
-		par->last_mode = par->update_mode;
-	}
-
-	if (par->flash)
-		mode |= AUOK190X_UPDATE_NONFLASH;
-
-	auok1900_update_region(par, mode, y1, y2);
-}
-
-static void auok1900fb_dpy_update(struct auok190xfb_par *par)
-{
-	int mode;
-
-	if (par->update_mode < 0) {
-		mode = AUOK190X_UPDATE_MODE(0);
-		par->last_mode = -1;
-	} else {
-		mode = AUOK190X_UPDATE_MODE(par->update_mode);
-		par->last_mode = par->update_mode;
-	}
-
-	if (par->flash)
-		mode |= AUOK190X_UPDATE_NONFLASH;
-
-	auok1900_update_region(par, mode, 0, par->info->var.yres);
-	par->update_cnt = 0;
-}
-
-static bool auok1900fb_need_refresh(struct auok190xfb_par *par)
-{
-	return (par->update_cnt > 10);
-}
-
-static int auok1900fb_probe(struct platform_device *pdev)
-{
-	struct auok190x_init_data init;
-	struct auok190x_board *board;
-
-	/* pick up board specific routines */
-	board = pdev->dev.platform_data;
-	if (!board)
-		return -EINVAL;
-
-	/* fill temporary init struct for common init */
-	init.id = "auo_k1900fb";
-	init.board = board;
-	init.update_partial = auok1900fb_dpy_update_pages;
-	init.update_all = auok1900fb_dpy_update;
-	init.need_refresh = auok1900fb_need_refresh;
-	init.init = auok1900_init;
-
-	return auok190x_common_probe(pdev, &init);
-}
-
-static int auok1900fb_remove(struct platform_device *pdev)
-{
-	return auok190x_common_remove(pdev);
-}
-
-static struct platform_driver auok1900fb_driver = {
-	.probe	= auok1900fb_probe,
-	.remove = auok1900fb_remove,
-	.driver	= {
-		.name	= "auo_k1900fb",
-		.pm = &auok190x_pm,
-	},
-};
-module_platform_driver(auok1900fb_driver);
-
-MODULE_DESCRIPTION("framebuffer driver for the AUO-K1900 EPD controller");
-MODULE_AUTHOR("Heiko Stuebner <[e-mail]>");
-MODULE_LICENSE("GPL");

drivers/video/fbdev/auo_k1901fb.c

···
-/*
- * auok190xfb.c -- FB driver for AUO-K1901 controllers
- *
- * Copyright (C) 2011, 2012 Heiko Stuebner <[e-mail]>
- *
- * based on broadsheetfb.c
- *
- * Copyright (C) 2008, Jaya Kumar
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
- *
- * Layout is based on skeletonfb.c by James Simmons and Geert Uytterhoeven.
- *
- * This driver is written to be used with the AUO-K1901 display controller.
- *
- * It is intended to be architecture independent. A board specific driver
- * must be used to perform all the physical IO interactions.
- *
- * The controller supports different update modes:
- * mode0+1 16 step gray (4bit)
- * mode2+3 4 step gray (2bit)
- * mode4+5 2 step gray (1bit)
- * - mode4 is described as "without LUT"
- * mode7 automatic selection of update mode
- *
- * The most interesting difference to the K1900 is the ability to do screen
- * updates in an asynchronous fashion. Where the K1900 needs to wait for the
- * current update to complete, the K1901 can process later updates already.
- */
-
-#include <linux/module.h>
-#include <linux/kernel.h>
-#include <linux/errno.h>
-#include <linux/string.h>
-#include <linux/mm.h>
-#include <linux/slab.h>
-#include <linux/delay.h>
-#include <linux/interrupt.h>
-#include <linux/fb.h>
-#include <linux/init.h>
-#include <linux/platform_device.h>
-#include <linux/list.h>
-#include <linux/firmware.h>
-#include <linux/gpio.h>
-#include <linux/pm_runtime.h>
-
-#include <video/auo_k190xfb.h>
-
-#include "auo_k190x.h"
-
-/*
- * AUO-K1901 specific commands
- */
-
-#define AUOK1901_CMD_LUT_INTERFACE	0x0005
-#define AUOK1901_CMD_DMA_START		0x1001
-#define AUOK1901_CMD_CURSOR_START	0x1007
-#define AUOK1901_CMD_CURSOR_STOP	AUOK190X_CMD_DATA_STOP
-#define AUOK1901_CMD_DDMA_START		0x1009
-
-#define AUOK1901_INIT_GATE_PULSE_LOW	(0 << 14)
-#define AUOK1901_INIT_GATE_PULSE_HIGH	(1 << 14)
-#define AUOK1901_INIT_SINGLE_GATE	(0 << 13)
-#define AUOK1901_INIT_DOUBLE_GATE	(1 << 13)
-
-/* Bits to pixels
- *   Mode	15-12	11-8	7-4	3-0
- *   format2	2	T	1	T
- *   format3	1	T	2	T
- *   format4	T	2	T	1
- *   format5	T	1	T	2
- *
- *   halftone modes:
- *   format6	2	2	1	1
- *   format7	1	1	2	2
- */
-#define AUOK1901_INIT_FORMAT2		(1 << 7)
-#define AUOK1901_INIT_FORMAT3		((1 << 7) | (1 << 6))
-#define AUOK1901_INIT_FORMAT4		(1 << 8)
-#define AUOK1901_INIT_FORMAT5		((1 << 8) | (1 << 6))
-#define AUOK1901_INIT_FORMAT6		((1 << 8) | (1 << 7))
-#define AUOK1901_INIT_FORMAT7		((1 << 8) | (1 << 7) | (1 << 6))
-
-/* res[4] to bit 10
- * res[3-0] to bits 5-2
- */
-#define AUOK1901_INIT_RESOLUTION(_res)	(((_res & (1 << 4)) << 6) \
-					 | ((_res & 0xf) << 2))
-
-/*
- * portrait / landscape orientation in AUOK1901_CMD_DMA_START
- */
-#define AUOK1901_DMA_ROTATE90(_rot)		((_rot & 1) << 13)
-
-/*
- * equivalent to 1 << 11, needs the ~ to have same rotation like K1900
- */
-#define AUOK1901_DDMA_ROTATE180(_rot)		((~_rot & 2) << 10)
-
-static void auok1901_init(struct auok190xfb_par *par)
-{
-	struct device *dev = par->info->device;
-	struct auok190x_board *board = par->board;
-	u16 init_param = 0;
-
-	pm_runtime_get_sync(dev);
-
-	init_param |= AUOK190X_INIT_INVERSE_WHITE;
-	init_param |= AUOK190X_INIT_FORMAT0;
-	init_param |= AUOK1901_INIT_RESOLUTION(par->resolution);
-	init_param |= AUOK190X_INIT_SHIFT_LEFT;
-
-	auok190x_send_cmdargs(par, AUOK190X_CMD_INIT, 1, &init_param);
-
-	/* let the controller finish */
-	board->wait_for_rdy(par);
-
-	pm_runtime_mark_last_busy(dev);
-	pm_runtime_put_autosuspend(dev);
-}
-
-static void auok1901_update_region(struct auok190xfb_par *par, int mode,
-						u16 y1, u16 y2)
-{
-	struct device *dev = par->info->device;
-	unsigned char *buf = (unsigned char *)par->info->screen_base;
-	int xres = par->info->var.xres;
-	int line_length = par->info->fix.line_length;
-	u16 args[5];
-
-	pm_runtime_get_sync(dev);
-
-	mutex_lock(&(par->io_lock));
-
-	/* y1 and y2 must be a multiple of 2 so drop the lowest bit */
-	y1 &= 0xfffe;
-	y2 &= 0xfffe;
-
-	dev_dbg(dev, "update (x,y,w,h,mode)=(%d,%d,%d,%d,%d)\n",
-		1, y1+1, xres, y2-y1, mode);
-
-	/* K1901: first transfer the region data */
-	args[0] = AUOK1901_DMA_ROTATE90(par->rotation) | 1;
-	args[1] = y1 + 1;
-	args[2] = xres;
-	args[3] = y2 - y1;
-	buf += y1 * line_length;
-	auok190x_send_cmdargs_pixels_nowait(par, AUOK1901_CMD_DMA_START, 4,
-					    args, ((y2 - y1) * line_length)/2,
-					    (u16 *) buf);
-	auok190x_send_command_nowait(par, AUOK190X_CMD_DATA_STOP);
-
-	/* K1901: second tell the controller to update the region with mode */
-	args[0] = mode | AUOK1901_DDMA_ROTATE180(par->rotation);
-	args[1] = 1;
-	args[2] = y1 + 1;
-	args[3] = xres;
-	args[4] = y2 - y1;
-	auok190x_send_cmdargs_nowait(par, AUOK1901_CMD_DDMA_START, 5, args);
-
-	par->update_cnt++;
-
-	mutex_unlock(&(par->io_lock));
-
-	pm_runtime_mark_last_busy(dev);
-	pm_runtime_put_autosuspend(dev);
-}
-
-static void auok1901fb_dpy_update_pages(struct auok190xfb_par *par,
-						u16 y1, u16 y2)
-{
-	int mode;
-
-	if (par->update_mode < 0) {
-		mode = AUOK190X_UPDATE_MODE(1);
-		par->last_mode = -1;
-	} else {
-		mode = AUOK190X_UPDATE_MODE(par->update_mode);
-		par->last_mode = par->update_mode;
-	}
-
-	if (par->flash)
-		mode |= AUOK190X_UPDATE_NONFLASH;
-
-	auok1901_update_region(par, mode, y1, y2);
-}
-
-static void auok1901fb_dpy_update(struct auok190xfb_par *par)
-{
-	int mode;
-
-	/* When doing full updates, wait for the controller to be ready
-	 * This will hopefully catch some hangs of the K1901
-	 */
-	par->board->wait_for_rdy(par);
-
-	if (par->update_mode < 0) {
-		mode = AUOK190X_UPDATE_MODE(0);
-		par->last_mode = -1;
-	} else {
-		mode = AUOK190X_UPDATE_MODE(par->update_mode);
-		par->last_mode = par->update_mode;
-	}
-
-	if (par->flash)
-		mode |= AUOK190X_UPDATE_NONFLASH;
-
-	auok1901_update_region(par, mode, 0, par->info->var.yres);
-	par->update_cnt = 0;
-}
-
-static bool auok1901fb_need_refresh(struct auok190xfb_par *par)
-{
-	return (par->update_cnt > 10);
-}
-
-static int auok1901fb_probe(struct platform_device *pdev)
-{
-	struct auok190x_init_data init;
-	struct auok190x_board *board;
-
-	/* pick up board specific routines */
-	board = pdev->dev.platform_data;
-	if (!board)
-		return -EINVAL;
-
-	/* fill temporary init struct for common init */
-	init.id = "auo_k1901fb";
-	init.board = board;
-	init.update_partial = auok1901fb_dpy_update_pages;
-	init.update_all = auok1901fb_dpy_update;
-	init.need_refresh = auok1901fb_need_refresh;
-	init.init = auok1901_init;
-
-	return auok190x_common_probe(pdev, &init);
-}
-
-static int auok1901fb_remove(struct platform_device *pdev)
-{
-	return auok190x_common_remove(pdev);
-}
-
-static struct platform_driver auok1901fb_driver = {
-	.probe	= auok1901fb_probe,
-	.remove = auok1901fb_remove,
-	.driver	= {
-		.name	= "auo_k1901fb",
-		.pm = &auok190x_pm,
-	},
-};
-module_platform_driver(auok1901fb_driver);
-
-MODULE_DESCRIPTION("framebuffer driver for the AUO-K1901 EPD controller");
-MODULE_AUTHOR("Heiko Stuebner <[e-mail]>");
-MODULE_LICENSE("GPL");

drivers/video/fbdev/auo_k190x.c

···
-/*
- * Common code for AUO-K190X framebuffer drivers
- *
- * Copyright (C) 2012 Heiko Stuebner <[e-mail]>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
- */
-
-#include <linux/module.h>
-#include <linux/sched/mm.h>
-#include <linux/kernel.h>
-#include <linux/gpio.h>
-#include <linux/platform_device.h>
-#include <linux/pm_runtime.h>
-#include <linux/fb.h>
-#include <linux/delay.h>
-#include <linux/uaccess.h>
-#include <linux/vmalloc.h>
-#include <linux/regulator/consumer.h>
-
-#include <video/auo_k190xfb.h>
-
-#include "auo_k190x.h"
-
-struct panel_info {
-	int w;
-	int h;
-};
-
-/* table of panel specific parameters to be indexed into by the board drivers */
-static struct panel_info panel_table[] = {
-	/* standard 6" */
-	[AUOK190X_RESOLUTION_800_600] = {
-		.w = 800,
-		.h = 600,
-	},
-	/* standard 9" */
-	[AUOK190X_RESOLUTION_1024_768] = {
-		.w = 1024,
-		.h = 768,
-	},
-	[AUOK190X_RESOLUTION_600_800] = {
-		.w = 600,
-		.h = 800,
-	},
-	[AUOK190X_RESOLUTION_768_1024] = {
-		.w = 768,
-		.h = 1024,
-	},
-};
-
-/*
- * private I80 interface to the board driver
- */
-
-static void auok190x_issue_data(struct auok190xfb_par *par, u16 data)
-{
-	par->board->set_ctl(par, AUOK190X_I80_WR, 0);
-	par->board->set_hdb(par, data);
-	par->board->set_ctl(par, AUOK190X_I80_WR, 1);
-}
-
-static void auok190x_issue_cmd(struct auok190xfb_par *par, u16 data)
-{
-	par->board->set_ctl(par, AUOK190X_I80_DC, 0);
-	auok190x_issue_data(par, data);
-	par->board->set_ctl(par, AUOK190X_I80_DC, 1);
-}
-
-/**
- * Conversion of 16bit color to 4bit grayscale
- * does roughly (0.3 * R + 0.6 G + 0.1 B) / 2
- */
-static inline int rgb565_to_gray4(u16 data, struct fb_var_screeninfo *var)
-{
-	return ((((data & 0xF800) >> var->red.offset) * 77 +
-		 ((data & 0x07E0) >> (var->green.offset + 1)) * 151 +
-		 ((data & 0x1F) >> var->blue.offset) * 28) >> 8 >> 1);
-}
-
-static int auok190x_issue_pixels_rgb565(struct auok190xfb_par *par, int size,
-					u16 *data)
-{
-	struct fb_var_screeninfo *var = &par->info->var;
-	struct device *dev = par->info->device;
-	int i;
-	u16 tmp;
-
-	if (size & 7) {
-		dev_err(dev, "issue_pixels: size %d must be a multiple of 8\n",
-			size);
-		return -EINVAL;
-	}
-
-	for (i = 0; i < (size >> 2); i++) {
-		par->board->set_ctl(par, AUOK190X_I80_WR, 0);
-
-		tmp  = (rgb565_to_gray4(data[4*i], var) & 0x000F);
-		tmp |= (rgb565_to_gray4(data[4*i+1], var) << 4) & 0x00F0;
-		tmp |= (rgb565_to_gray4(data[4*i+2], var) << 8) & 0x0F00;
-		tmp |= (rgb565_to_gray4(data[4*i+3], var) << 12) & 0xF000;
-
-		par->board->set_hdb(par, tmp);
-		par->board->set_ctl(par, AUOK190X_I80_WR, 1);
-	}
-
-	return 0;
-}
-
-static int auok190x_issue_pixels_gray8(struct auok190xfb_par *par, int size,
-				       u16 *data)
-{
-	struct device *dev = par->info->device;
-	int i;
-	u16 tmp;
-
-	if (size & 3) {
-		dev_err(dev, "issue_pixels: size %d must be a multiple of 4\n",
-			size);
-		return -EINVAL;
-	}
-
-	for (i = 0; i < (size >> 1); i++) {
-		par->board->set_ctl(par, AUOK190X_I80_WR, 0);
-
-		/* simple reduction of 8bit staticgray to 4bit gray
-		 * combines 4 * 4bit pixel values into a 16bit value
-		 */
-		tmp  = (data[2*i] & 0xF0) >> 4;
-		tmp |= (data[2*i] & 0xF000) >> 8;
-		tmp |= (data[2*i+1] & 0xF0) << 4;
-		tmp |= (data[2*i+1] & 0xF000);
-
-		par->board->set_hdb(par, tmp);
-		par->board->set_ctl(par, AUOK190X_I80_WR, 1);
-	}
-
-	return 0;
-}
-
-static int auok190x_issue_pixels(struct auok190xfb_par *par, int size,
-				 u16 *data)
-{
-	struct fb_info *info = par->info;
-	struct device *dev = par->info->device;
-
-	if (info->var.bits_per_pixel == 8 && info->var.grayscale)
-		auok190x_issue_pixels_gray8(par, size, data);
-	else if (info->var.bits_per_pixel == 16)
-		auok190x_issue_pixels_rgb565(par, size, data);
-	else
-		dev_err(dev, "unsupported color mode (bits: %d, gray: %d)\n",
-			info->var.bits_per_pixel, info->var.grayscale);
-
-	return 0;
-}
-
-static u16 auok190x_read_data(struct auok190xfb_par *par)
-{
-	u16 data;
-
-	par->board->set_ctl(par, AUOK190X_I80_OE, 0);
-	data = par->board->get_hdb(par);
-	par->board->set_ctl(par, AUOK190X_I80_OE, 1);
-
-	return data;
-}
-
-/*
- * Command interface for the controller drivers
- */
-
-void auok190x_send_command_nowait(struct auok190xfb_par *par, u16 data)
-{
-	par->board->set_ctl(par, AUOK190X_I80_CS, 0);
-	auok190x_issue_cmd(par, data);
-	par->board->set_ctl(par, AUOK190X_I80_CS, 1);
-}
-EXPORT_SYMBOL_GPL(auok190x_send_command_nowait);
-
-void auok190x_send_cmdargs_nowait(struct auok190xfb_par *par, u16 cmd,
-				  int argc, u16 *argv)
-{
-	int i;
-
-	par->board->set_ctl(par, AUOK190X_I80_CS, 0);
-	auok190x_issue_cmd(par, cmd);
-
-	for (i = 0; i < argc; i++)
-		auok190x_issue_data(par, argv[i]);
-	par->board->set_ctl(par, AUOK190X_I80_CS, 1);
-}
-EXPORT_SYMBOL_GPL(auok190x_send_cmdargs_nowait);
-
-int auok190x_send_command(struct auok190xfb_par *par, u16 data)
-{
-	int ret;
-
-	ret = par->board->wait_for_rdy(par);
-	if (ret)
-		return ret;
-
-	auok190x_send_command_nowait(par, data);
-	return 0;
-}
-EXPORT_SYMBOL_GPL(auok190x_send_command);
-
-int auok190x_send_cmdargs(struct auok190xfb_par *par, u16 cmd,
-			   int argc, u16 *argv)
-{
-	int ret;
-
-	ret = par->board->wait_for_rdy(par);
-	if (ret)
-		return ret;
-
-	auok190x_send_cmdargs_nowait(par, cmd, argc, argv);
-	return 0;
-}
-EXPORT_SYMBOL_GPL(auok190x_send_cmdargs);
-
-int auok190x_read_cmdargs(struct auok190xfb_par *par, u16 cmd,
-			   int argc, u16 *argv)
-{
-	int i, ret;
-
-	ret = par->board->wait_for_rdy(par);
-	if (ret)
-		return ret;
-
-	par->board->set_ctl(par, AUOK190X_I80_CS, 0);
-	auok190x_issue_cmd(par, cmd);
-
-	for (i = 0; i < argc; i++)
-		argv[i] = auok190x_read_data(par);
-	par->board->set_ctl(par, AUOK190X_I80_CS, 1);
-
-	return 0;
-}
-EXPORT_SYMBOL_GPL(auok190x_read_cmdargs);
-
-void auok190x_send_cmdargs_pixels_nowait(struct auok190xfb_par *par, u16 cmd,
-				  int argc, u16 *argv, int size, u16 *data)
-{
-	int i;
-
-	par->board->set_ctl(par, AUOK190X_I80_CS, 0);
-
-	auok190x_issue_cmd(par, cmd);
-
-	for (i = 0; i < argc; i++)
-		auok190x_issue_data(par, argv[i]);
-
-	auok190x_issue_pixels(par, size, data);
-
-	par->board->set_ctl(par, AUOK190X_I80_CS, 1);
-}
-EXPORT_SYMBOL_GPL(auok190x_send_cmdargs_pixels_nowait);
-
-int auok190x_send_cmdargs_pixels(struct auok190xfb_par *par, u16 cmd,
-				  int argc, u16 *argv, int size, u16 *data)
-{
-	int ret;
-
-	ret = par->board->wait_for_rdy(par);
-	if (ret)
-		return ret;
-
-	auok190x_send_cmdargs_pixels_nowait(par, cmd, argc, argv, size, data);
-
-	return 0;
-}
-EXPORT_SYMBOL_GPL(auok190x_send_cmdargs_pixels);
-
-/*
- * fbdefio callbacks - common on both controllers.
- */
-
-static void auok190xfb_dpy_first_io(struct fb_info *info)
-{
-	/* tell runtime-pm that we wish to use the device in a short time */
-	pm_runtime_get(info->device);
-}
-
-/* this is called back from the deferred io workqueue */
-static void auok190xfb_dpy_deferred_io(struct fb_info *info,
-				struct list_head *pagelist)
-{
-	struct fb_deferred_io *fbdefio = info->fbdefio;
-	struct auok190xfb_par *par = info->par;
-	u16 line_length = info->fix.line_length;
-	u16 yres = info->var.yres;
-	u16 y1 = 0, h = 0;
-	int prev_index = -1;
-	struct page *cur;
-	int h_inc;
-	int threshold;
-
-	if (!list_empty(pagelist))
-		/* the device resume should've been requested through first_io,
-		 * if the resume did not finish until now, wait for it.
-		 */
-		pm_runtime_barrier(info->device);
-	else
-		/* We reached this via the fsync or some other way.
-		 * In either case the first_io function did not run,
-		 * so we runtime_resume the device here synchronously.
-		 */
-		pm_runtime_get_sync(info->device);
-
-	/* Do a full screen update every n updates to prevent
-	 * excessive darkening of the Sipix display.
-	 * If we do this, there is no need to walk the pages.
-	 */
-	if (par->need_refresh(par)) {
-		par->update_all(par);
-		goto out;
-	}
-
-	/* height increment is fixed per page */
-	h_inc = DIV_ROUND_UP(PAGE_SIZE , line_length);
-
-	/* calculate number of pages from pixel height */
-	threshold = par->consecutive_threshold / h_inc;
-	if (threshold < 1)
-		threshold = 1;
-
-	/* walk the written page list and swizzle the data */
-	list_for_each_entry(cur, &fbdefio->pagelist, lru) {
-		if (prev_index < 0) {
-			/* just starting so assign first page */
-			y1 = (cur->index << PAGE_SHIFT) / line_length;
-			h = h_inc;
-		} else if ((cur->index - prev_index) <= threshold) {
-			/* page is within our threshold for single updates */
-			h += h_inc * (cur->index - prev_index);
-		} else {
-			/* page not consecutive, issue previous update first */
-			par->update_partial(par, y1, y1 + h);
-
-			/* start over with our non consecutive page */
-			y1 = (cur->index << PAGE_SHIFT) / line_length;
-			h = h_inc;
-		}
-		prev_index = cur->index;
-	}
-
-	/* if we still have any pages to update we do so now */
-	if (h >= yres)
-		/* its a full screen update, just do it */
-		par->update_all(par);
-	else
-		par->update_partial(par, y1, min((u16) (y1 + h), yres));
-
-out:
-	pm_runtime_mark_last_busy(info->device);
-	pm_runtime_put_autosuspend(info->device);
-}
-
-/*
- * framebuffer operations
- */
-
-/*
- * this is the slow path from userspace. they can seek and write to
- * the fb. it's inefficient to do anything less than a full screen draw
- */
-static ssize_t auok190xfb_write(struct fb_info *info, const char __user *buf,
-				size_t count, loff_t *ppos)
-{
-	struct auok190xfb_par *par = info->par;
-	unsigned long p = *ppos;
-	void *dst;
-	int err = 0;
-	unsigned long total_size;
-
-	if (info->state != FBINFO_STATE_RUNNING)
-		return -EPERM;
-
-	total_size = info->fix.smem_len;
-
-	if (p > total_size)
-		return -EFBIG;
-
-	if (count > total_size) {
-		err = -EFBIG;
-		count = total_size;
-	}
-
-	if (count + p > total_size) {
-		if (!err)
-			err = -ENOSPC;
-
-		count = total_size - p;
-	}
-
-	dst = (void *)(info->screen_base + p);
-
-	if (copy_from_user(dst, buf, count))
-		err = -EFAULT;
-
-	if  (!err)
-		*ppos += count;
-
-	par->update_all(par);
-
-	return (err) ? err : count;
-}
-
-static void auok190xfb_fillrect(struct fb_info *info,
-				   const struct fb_fillrect *rect)
-{
-	struct auok190xfb_par *par = info->par;
-
-	sys_fillrect(info, rect);
-
-	par->update_all(par);
-}
-
-static void auok190xfb_copyarea(struct fb_info *info,
-				   const struct fb_copyarea *area)
-{
-	struct auok190xfb_par *par = info->par;
-
-	sys_copyarea(info, area);
-
-	par->update_all(par);
-}
-
-static void auok190xfb_imageblit(struct fb_info *info,
-				const struct fb_image *image)
-{
-	struct auok190xfb_par *par = info->par;
-
-	sys_imageblit(info, image);
-
-	par->update_all(par);
-}
-
-static int auok190xfb_check_var(struct fb_var_screeninfo *var,
-				   struct fb_info *info)
-{
-	struct device *dev = info->device;
-	struct auok190xfb_par *par = info->par;
-	struct panel_info *panel = &panel_table[par->resolution];
-	int size;
-
-	/*
-	 * Color depth
-	 */
-
-	if (var->bits_per_pixel == 8 && var->grayscale == 1) {
-		/*
-		 * For 8-bit grayscale, R, G, and B offset are equal.
-		 */
-		var->red.length = 8;
-		var->red.offset = 0;
-		var->red.msb_right = 0;
-
-		var->green.length = 8;
-		var->green.offset = 0;
-		var->green.msb_right = 0;
-
-		var->blue.length = 8;
-		var->blue.offset = 0;
-		var->blue.msb_right = 0;
-
-		var->transp.length = 0;
-		var->transp.offset = 0;
-		var->transp.msb_right = 0;
-	} else if (var->bits_per_pixel == 16) {
-		var->red.length = 5;
-		var->red.offset = 11;
-		var->red.msb_right = 0;
-
-		var->green.length = 6;
-		var->green.offset = 5;
-		var->green.msb_right = 0;
-
-		var->blue.length = 5;
-		var->blue.offset = 0;
-		var->blue.msb_right = 0;
-
-		var->transp.length = 0;
-		var->transp.offset = 0;
-		var->transp.msb_right = 0;
-	} else {
-		dev_warn(dev, "unsupported color mode (bits: %d, grayscale: %d)\n",
-			info->var.bits_per_pixel, info->var.grayscale);
-		return -EINVAL;
-	}
-
-	/*
-	 * Dimensions
-	 */
-
-	switch (var->rotate) {
-	case FB_ROTATE_UR:
-	case FB_ROTATE_UD:
-		var->xres = panel->w;
-		var->yres = panel->h;
-		break;
-	case FB_ROTATE_CW:
-	case FB_ROTATE_CCW:
-		var->xres = panel->h;
-		var->yres = panel->w;
-		break;
-	default:
-		dev_dbg(dev, "Invalid rotation request\n");
-		return -EINVAL;
-	}
-
-	var->xres_virtual = var->xres;
-	var->yres_virtual = var->yres;
-
-	/*
-	 *  Memory limit
-	 */
-
-	size = var->xres_virtual * var->yres_virtual * var->bits_per_pixel / 8;
-	if (size > info->fix.smem_len) {
-		dev_err(dev, "Memory limit exceeded, requested %dK\n",
-			size >> 10);
-		return -ENOMEM;
-	}
-
-	return 0;
-}
-
-static int auok190xfb_set_fix(struct fb_info *info)
-{
-	struct fb_fix_screeninfo *fix = &info->fix;
-	struct fb_var_screeninfo *var = &info->var;
-
-	fix->line_length = var->xres_virtual * var->bits_per_pixel / 8;
-
-	fix->type = FB_TYPE_PACKED_PIXELS;
-	fix->accel = FB_ACCEL_NONE;
-	fix->visual = (var->grayscale) ? FB_VISUAL_STATIC_PSEUDOCOLOR
-				       : FB_VISUAL_TRUECOLOR;
-	fix->xpanstep = 0;
-	fix->ypanstep = 0;
-	fix->ywrapstep = 0;
-
-	return 0;
-}
-
-static int auok190xfb_set_par(struct fb_info *info)
-{
-	struct auok190xfb_par *par = info->par;
-
-	par->rotation = info->var.rotate;
-	auok190xfb_set_fix(info);
-
-	/* reinit the controller to honor the rotation */
-	par->init(par);
-
-	/* wait for init to complete */
-	par->board->wait_for_rdy(par);
-
-	return 0;
-}
-
-static struct fb_ops auok190xfb_ops = {
-	.owner		= THIS_MODULE,
-	.fb_read	= fb_sys_read,
-	.fb_write	= auok190xfb_write,
-	.fb_fillrect	= auok190xfb_fillrect,
-	.fb_copyarea	= auok190xfb_copyarea,
-	.fb_imageblit	= auok190xfb_imageblit,
-	.fb_check_var	= auok190xfb_check_var,
-	.fb_set_par     = auok190xfb_set_par,
-};
-
-/*
- * Controller-functions common to both K1900 and K1901
- */
-
-static int auok190x_read_temperature(struct auok190xfb_par *par)
-{
-	struct device *dev = par->info->device;
-	u16 data[4];
-	int temp;
-
-	pm_runtime_get_sync(dev);
-
-	mutex_lock(&(par->io_lock));
-
-	auok190x_read_cmdargs(par, AUOK190X_CMD_READ_VERSION, 4, data);
-
-	mutex_unlock(&(par->io_lock));
-
-	pm_runtime_mark_last_busy(dev);
-	pm_runtime_put_autosuspend(dev);
-
-	/* sanitize and split of half-degrees for now */
-	temp = ((data[0] & AUOK190X_VERSION_TEMP_MASK) >> 1);
-
-	/* handle positive and negative temperatures */
-	if (temp >= 201)
-		return (255 - temp + 1) * (-1);
-	else
-		return temp;
-}
-
-static void auok190x_identify(struct auok190xfb_par *par)
-{
-	struct device *dev = par->info->device;
-	u16 data[4];
-
-	pm_runtime_get_sync(dev);
-
-	mutex_lock(&(par->io_lock));
-
-	auok190x_read_cmdargs(par, AUOK190X_CMD_READ_VERSION, 4, data);
-
-	mutex_unlock(&(par->io_lock));
-
-	par->epd_type = data[1] & AUOK190X_VERSION_TEMP_MASK;
-
-	par->panel_size_int = AUOK190X_VERSION_SIZE_INT(data[2]);
-	par->panel_size_float = AUOK190X_VERSION_SIZE_FLOAT(data[2]);
-	par->panel_model = AUOK190X_VERSION_MODEL(data[2]);
-
-	par->tcon_version = AUOK190X_VERSION_TCON(data[3]);
-	par->lut_version = AUOK190X_VERSION_LUT(data[3]);
-
-	dev_dbg(dev, "panel %d.%din, model 0x%x, EPD 0x%x TCON-rev 0x%x, LUT-rev 0x%x",
-		par->panel_size_int, par->panel_size_float, par->panel_model,
-		par->epd_type, par->tcon_version, par->lut_version);
-
-	pm_runtime_mark_last_busy(dev);
-	pm_runtime_put_autosuspend(dev);
-}
-
-/*
- * Sysfs functions
- */
-
-static ssize_t update_mode_show(struct device *dev,
-				struct device_attribute *attr, char *buf)
-{
-	struct fb_info *info = dev_get_drvdata(dev);
-	struct auok190xfb_par *par = info->par;
-
-	return sprintf(buf, "%d\n", par->update_mode);
-}
-
-static ssize_t update_mode_store(struct device *dev,
-				 struct device_attribute *attr,
-				 const char *buf, size_t count)
-{
-	struct fb_info *info = dev_get_drvdata(dev);
-	struct auok190xfb_par *par = info->par;
-	int mode, ret;
-
-	ret = kstrtoint(buf, 10, &mode);
-	if (ret)
-		return ret;
-
-	par->update_mode = mode;
-
-	/* if we enter a better mode, do a full update */
-	if (par->last_mode > 1 && mode < par->last_mode)
-		par->update_all(par);
-
-	return count;
-}
-
-static ssize_t flash_show(struct device *dev, struct device_attribute *attr,
-			  char *buf)
-{
-	struct fb_info *info = dev_get_drvdata(dev);
-	struct auok190xfb_par *par = info->par;
-
-	return sprintf(buf, "%d\n", par->flash);
-}
-
-static ssize_t flash_store(struct device *dev, struct device_attribute *attr,
-			   const char *buf, size_t count)
-{
-	struct fb_info *info = dev_get_drvdata(dev);
-	struct auok190xfb_par *par = info->par;
-	int flash, ret;
-
-	ret = kstrtoint(buf, 10, &flash);
-	if (ret)
-		return ret;
-
-	if (flash > 0)
-		par->flash = 1;
-	else
-		par->flash = 0;
-
-	return count;
-}
-
-static ssize_t temp_show(struct device *dev, struct device_attribute *attr,
-			 char *buf)
-{
-	struct fb_info *info = dev_get_drvdata(dev);
-	struct auok190xfb_par *par = info->par;
-	int temp;
-
-	temp = auok190x_read_temperature(par);
-	return sprintf(buf, "%d\n", temp);
-}
-
-static DEVICE_ATTR_RW(update_mode);
-static DEVICE_ATTR_RW(flash);
-static DEVICE_ATTR(temp, 0644, temp_show, NULL);
-
-static struct attribute *auok190x_attributes[] = {
-	&dev_attr_update_mode.attr,
-	&dev_attr_flash.attr,
-	&dev_attr_temp.attr,
-	NULL
-};
-
-static const struct attribute_group auok190x_attr_group = {
-	.attrs		= auok190x_attributes,
-};
-
-static int auok190x_power(struct auok190xfb_par *par, bool on)
-{
-	struct auok190x_board *board = par->board;
-	int ret;
-
-	if (on) {
-		/* We should maintain POWER up for at least 80ms before set
-		 * RST_N and SLP_N to high (TCON spec 20100803_v35 p59)
-		 */
-		ret = regulator_enable(par->regulator);
-		if (ret)
-			return ret;
-
-		msleep(200);
-		gpio_set_value(board->gpio_nrst, 1);
-		gpio_set_value(board->gpio_nsleep, 1);
-		msleep(200);
-	} else {
-		regulator_disable(par->regulator);
-		gpio_set_value(board->gpio_nrst, 0);
-		gpio_set_value(board->gpio_nsleep, 0);
-	}
-
-	return 0;
-}
-
-/*
- * Recovery - powercycle the controller
- */
-
-static void auok190x_recover(struct auok190xfb_par *par)
-{
-	struct device *dev = par->info->device;
-
-	auok190x_power(par, 0);
-	msleep(100);
-	auok190x_power(par, 1);
-
-	/* after powercycling the device, it's always active */
-	pm_runtime_set_active(dev);
-	par->standby = 0;
-
-	par->init(par);
-
-	/* wait for init to complete */
-	par->board->wait_for_rdy(par);
-}
-
-/*
- * Power-management
- */
-static int __maybe_unused auok190x_runtime_suspend(struct device *dev)
-{
-	struct platform_device *pdev = to_platform_device(dev);
-	struct fb_info *info = platform_get_drvdata(pdev);
-	struct auok190xfb_par *par = info->par;
-	struct auok190x_board *board = par->board;
-	u16 standby_param;
-
-	/* take and keep the lock until we are resumed, as the controller
-	 * will never reach the non-busy state when in standby mode
-	 */
-	mutex_lock(&(par->io_lock));
-
-	if (par->standby) {
-		dev_warn(dev, "already in standby, runtime-pm pairing mismatch\n");
-		mutex_unlock(&(par->io_lock));
-		return 0;
-	}
-
-	/* according to runtime_pm.txt runtime_suspend only means, that the
-	 * device will not process data and will not communicate with the CPU
-	 * As we hold the lock, this stays true even without standby
-	 */
-	if (board->quirks & AUOK190X_QUIRK_STANDBYBROKEN) {
-		dev_dbg(dev, "runtime suspend without standby\n");
-		goto finish;
-	} else if (board->quirks & AUOK190X_QUIRK_STANDBYPARAM) {
-		/* for some TCON versions STANDBY expects a parameter (0) but
-		 * it seems the real tcon version has to be determined yet.
-		 */
-		dev_dbg(dev, "runtime suspend with additional empty param\n");
-		standby_param = 0;
-		auok190x_send_cmdargs(par, AUOK190X_CMD_STANDBY, 1,
-				      &standby_param);
-	} else {
-		dev_dbg(dev, "runtime suspend without param\n");
-		auok190x_send_command(par, AUOK190X_CMD_STANDBY);
-	}
-
-	msleep(64);
-
-finish:
-	par->standby = 1;
-
-	return 0;
-}
-
-static int __maybe_unused auok190x_runtime_resume(struct device *dev)
-{
-	struct platform_device *pdev = to_platform_device(dev);
-	struct fb_info *info = platform_get_drvdata(pdev);
-	struct auok190xfb_par *par = info->par;
-	struct auok190x_board *board = par->board;
-
-	if (!par->standby) {
-		dev_warn(dev, "not in standby, runtime-pm pairing mismatch\n");
-		return 0;
-	}
-
-	if (board->quirks & AUOK190X_QUIRK_STANDBYBROKEN) {
-		dev_dbg(dev, "runtime resume without standby\n");
-	} else {
-		/* when in standby, controller is always busy
-		 * and only accepts the wakeup command
-		 */
-		dev_dbg(dev, "runtime resume from standby\n");
-		auok190x_send_command_nowait(par, AUOK190X_CMD_WAKEUP);
-
-		msleep(160);
-
-		/* wait for the controller to be ready and release the lock */
-		board->wait_for_rdy(par);
-	}
-
-	par->standby = 0;
-
-	mutex_unlock(&(par->io_lock));
-
-	return 0;
-}
-
-static int __maybe_unused auok190x_suspend(struct device *dev)
-{
-	struct platform_device *pdev = to_platform_device(dev);
-	struct fb_info *info = platform_get_drvdata(pdev);
-	struct auok190xfb_par *par = info->par;
-	struct auok190x_board *board = par->board;
-	int ret;
-
-	dev_dbg(dev, "suspend\n");
-	if (board->quirks & AUOK190X_QUIRK_STANDBYBROKEN) {
-		/* suspend via powering off the ic */
-		dev_dbg(dev, "suspend with broken standby\n");
-
-		auok190x_power(par, 0);
-	} else {
-		dev_dbg(dev, "suspend using sleep\n");
-
-		/* the sleep state can only be entered from the standby state.
-		 * pm_runtime_get_noresume gets called before the suspend call.
-		 * So the devices usage count is >0 but it is not necessarily
-		 * active.
-		 */
-		if (!pm_runtime_status_suspended(dev)) {
-			ret = auok190x_runtime_suspend(dev);
-			if (ret < 0) {
-				dev_err(dev, "auok190x_runtime_suspend failed with %d\n",
-					ret);
-				return ret;
-			}
-			par->manual_standby = 1;
-		}
-
-		gpio_direction_output(board->gpio_nsleep, 0);
-	}
-
-	msleep(100);
-
-	return 0;
-}
-
-static int __maybe_unused auok190x_resume(struct device *dev)
-{
-	struct platform_device *pdev = to_platform_device(dev);
-	struct fb_info *info = platform_get_drvdata(pdev);
-	struct auok190xfb_par *par = info->par;
-	struct auok190x_board *board = par->board;
-
-	dev_dbg(dev, "resume\n");
-	if (board->quirks & AUOK190X_QUIRK_STANDBYBROKEN) {
-		dev_dbg(dev, "resume with broken standby\n");
-
-		auok190x_power(par, 1);
-
-		par->init(par);
-	} else {
-		dev_dbg(dev, "resume from sleep\n");
-
-		/* device should be in runtime suspend when we were suspended
-		 * and pm_runtime_put_sync gets called after this function.
-		 * So there is no need to touch the standby mode here at all.
-		 */
-		gpio_direction_output(board->gpio_nsleep, 1);
-		msleep(100);
-
-		/* an additional init call seems to be necessary after sleep */
-		auok190x_runtime_resume(dev);
-		par->init(par);
-
-		/* if we were runtime-suspended before, suspend again*/
-		if (!par->manual_standby)
-			auok190x_runtime_suspend(dev);
-		else
-			par->manual_standby = 0;
-	}
-
-	return 0;
-}
-
-const struct dev_pm_ops auok190x_pm = {
-	SET_RUNTIME_PM_OPS(auok190x_runtime_suspend, auok190x_runtime_resume,
-			   NULL)
-	SET_SYSTEM_SLEEP_PM_OPS(auok190x_suspend, auok190x_resume)
-};
-EXPORT_SYMBOL_GPL(auok190x_pm);
-
-/*
- * Common probe and remove code
- */
-
-int auok190x_common_probe(struct platform_device *pdev,
-			  struct auok190x_init_data *init)
-{
-	struct auok190x_board *board = init->board;
-	struct auok190xfb_par *par;
-	struct fb_info *info;
-	struct panel_info *panel;
-	int videomemorysize, ret;
-	unsigned char *videomemory;
-
-	/* check board contents */
-	if (!board->init || !board->cleanup || !board->wait_for_rdy
-	    || !board->set_ctl || !board->set_hdb || !board->get_hdb
-	    || !board->setup_irq)
-		return -EINVAL;
-
-	info = framebuffer_alloc(sizeof(struct auok190xfb_par), &pdev->dev);
-	if (!info)
-		return -ENOMEM;
-
-	par = info->par;
-	par->info = info;
-	par->board = board;
-	par->recover = auok190x_recover;
-	par->update_partial = init->update_partial;
-	par->update_all = init->update_all;
-	par->need_refresh = init->need_refresh;
-	par->init = init->init;
-
-	/* init update modes */
-	par->update_cnt = 0;
-	par->update_mode = -1;
-	par->last_mode = -1;
-	par->flash = 0;
-
-	par->regulator = regulator_get(info->device, "vdd");
-	if (IS_ERR(par->regulator)) {
-		ret = PTR_ERR(par->regulator);
-		dev_err(info->device, "Failed to get regulator: %d\n", ret);
-		goto err_reg;
-	}
-
-	ret = board->init(par);
-	if (ret) {
-		dev_err(info->device, "board init failed, %d\n", ret);
-		goto err_board;
-	}
-
-	ret = gpio_request(board->gpio_nsleep, "AUOK190x sleep");
-	if (ret) {
-		dev_err(info->device, "could not request sleep gpio, %d\n",
-			ret);
-		goto err_gpio1;
-	}
-
-	ret = gpio_direction_output(board->gpio_nsleep, 0);
-	if (ret) {
-		dev_err(info->device, "could not set sleep gpio, %d\n", ret);
-		goto err_gpio2;
-	}
-
-	ret = gpio_request(board->gpio_nrst, "AUOK190x reset");
-	if (ret) {
-		dev_err(info->device, "could not request reset gpio, %d\n",
-			ret);
-		goto err_gpio2;
-	}
-
-	ret = gpio_direction_output(board->gpio_nrst, 0);
-	if (ret) {
-		dev_err(info->device, "could not set reset gpio, %d\n", ret);
-		goto err_gpio3;
-	}
-
-	ret = auok190x_power(par, 1);
-	if (ret) {
-		dev_err(info->device, "could not power on the device, %d\n",
-			ret);
-		goto err_gpio3;
-	}
-
-	mutex_init(&par->io_lock);
-
-	init_waitqueue_head(&par->waitq);
-
-	ret = par->board->setup_irq(par->info);
-	if (ret) {
-		dev_err(info->device, "could not setup ready-irq, %d\n", ret);
-		goto err_irq;
-	}
-
-	/* wait for init to complete */
-	par->board->wait_for_rdy(par);
-
-	/*
-	 * From here on the controller can talk to us
-	 */
-
-	/* initialise fix, var, resolution and rotation */
-
-	strlcpy(info->fix.id, init->id, 16);
-	info->var.bits_per_pixel = 8;
-	info->var.grayscale = 1;
-
-	panel = &panel_table[board->resolution];
-
-	par->resolution = board->resolution;
-	par->rotation = 0;
-
-	/* videomemory handling */
-
-	videomemorysize = roundup((panel->w * panel->h) * 2, PAGE_SIZE);
-	videomemory = vzalloc(videomemorysize);
-	if (!videomemory) {
-		ret = -ENOMEM;
-		goto err_irq;
-	}
-
-	info->screen_base = (char *)videomemory;
-	info->fix.smem_len = videomemorysize;
-
-	info->flags = FBINFO_FLAG_DEFAULT | FBINFO_VIRTFB;
-	info->fbops = &auok190xfb_ops;
-
-	ret = auok190xfb_check_var(&info->var, info);
-	if (ret)
-		goto err_defio;
-
-	auok190xfb_set_fix(info);
-
-	/* deferred io init */
-
-	info->fbdefio = devm_kzalloc(info->device,
-				     sizeof(struct fb_deferred_io),
-				     GFP_KERNEL);
-	if (!info->fbdefio) {
-		dev_err(info->device, "Failed to allocate memory\n");
-		ret = -ENOMEM;
-		goto err_defio;
-	}
-
-	dev_dbg(info->device, "targeting %d frames per second\n", board->fps);
-	info->fbdefio->delay = HZ / board->fps;
-	info->fbdefio->first_io = auok190xfb_dpy_first_io,
-	info->fbdefio->deferred_io = auok190xfb_dpy_deferred_io,
-	fb_deferred_io_init(info);
-
-	/* color map */
-
-	ret = fb_alloc_cmap(&info->cmap, 256, 0);
-	if (ret < 0) {
-		dev_err(info->device, "Failed to allocate colormap\n");
-		goto err_cmap;
-	}
-
-	/* controller init */
-
-	par->consecutive_threshold = 100;
-	par->init(par);
-	auok190x_identify(par);
-
-	platform_set_drvdata(pdev, info);
-
-	ret = register_framebuffer(info);
-	if (ret < 0)
-		goto err_regfb;
-
-	ret = sysfs_create_group(&info->device->kobj, &auok190x_attr_group);
-	if (ret)
-		goto err_sysfs;
-
-	dev_info(info->device, "fb%d: %dx%d using %dK of video memory\n",
-		 info->node, info->var.xres, info->var.yres,
-		 videomemorysize >> 10);
-
-	/* increase autosuspend_delay when we use alternative methods
-	 * for runtime_pm
-	 */
-	par->autosuspend_delay = (board->quirks & AUOK190X_QUIRK_STANDBYBROKEN)
-					? 1000 : 200;
-
-	pm_runtime_set_active(info->device);
-	pm_runtime_enable(info->device);
-	pm_runtime_set_autosuspend_delay(info->device, par->autosuspend_delay);
-	pm_runtime_use_autosuspend(info->device);
-
-	return 0;
-
-err_sysfs:
-	unregister_framebuffer(info);
-err_regfb:
-	fb_dealloc_cmap(&info->cmap);
-err_cmap:
-	fb_deferred_io_cleanup(info);
-err_defio:
-	vfree((void *)info->screen_base);
-err_irq:
-	auok190x_power(par, 0);
-err_gpio3:
-	gpio_free(board->gpio_nrst);
-err_gpio2:
-	gpio_free(board->gpio_nsleep);
-err_gpio1:
-	board->cleanup(par);
-err_board:
-	regulator_put(par->regulator);
-err_reg:
-	framebuffer_release(info);
-
-	return ret;
-}
-EXPORT_SYMBOL_GPL(auok190x_common_probe);
-
-int  auok190x_common_remove(struct platform_device *pdev)
-{
-	struct fb_info *info = platform_get_drvdata(pdev);
-	struct auok190xfb_par *par = info->par;
-	struct auok190x_board *board = par->board;
-
-	pm_runtime_disable(info->device);
-
-	sysfs_remove_group(&info->device->kobj, &auok190x_attr_group);
-
-	unregister_framebuffer(info);
-
-	fb_dealloc_cmap(&info->cmap);
-
-	fb_deferred_io_cleanup(info);
-
-	vfree((void *)info->screen_base);
-
-	auok190x_power(par, 0);
-
-	gpio_free(board->gpio_nrst);
-	gpio_free(board->gpio_nsleep);
-
-	board->cleanup(par);
-
-	regulator_put(par->regulator);
-
-	framebuffer_release(info);
-
-	return 0;
-}
-EXPORT_SYMBOL_GPL(auok190x_common_remove);
-
-MODULE_DESCRIPTION("Common code for AUO-K190X controllers");
-MODULE_AUTHOR("Heiko Stuebner <[e-mail]>");
-MODULE_LICENSE("GPL");

drivers/video/fbdev/auo_k190x.h

···
-/*
- * Private common definitions for AUO-K190X framebuffer drivers
- *
- * Copyright (C) 2012 Heiko Stuebner <[e-mail]>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
- */
-
-/*
- * I80 interface specific defines
- */
-
-#define AUOK190X_I80_CS			0x01
-#define AUOK190X_I80_DC			0x02
-#define AUOK190X_I80_WR			0x03
-#define AUOK190X_I80_OE			0x04
-
-/*
- * AUOK190x commands, common to both controllers
- */
-
-#define AUOK190X_CMD_INIT		0x0000
-#define AUOK190X_CMD_STANDBY		0x0001
-#define AUOK190X_CMD_WAKEUP		0x0002
-#define AUOK190X_CMD_TCON_RESET		0x0003
-#define AUOK190X_CMD_DATA_STOP		0x1002
-#define AUOK190X_CMD_LUT_START		0x1003
-#define AUOK190X_CMD_DISP_REFRESH	0x1004
-#define AUOK190X_CMD_DISP_RESET		0x1005
-#define AUOK190X_CMD_PRE_DISPLAY_START	0x100D
-#define AUOK190X_CMD_PRE_DISPLAY_STOP	0x100F
-#define AUOK190X_CMD_FLASH_W		0x2000
-#define AUOK190X_CMD_FLASH_E		0x2001
-#define AUOK190X_CMD_FLASH_STS		0x2002
-#define AUOK190X_CMD_FRAMERATE		0x3000
-#define AUOK190X_CMD_READ_VERSION	0x4000
-#define AUOK190X_CMD_READ_STATUS	0x4001
-#define AUOK190X_CMD_READ_LUT		0x4003
-#define AUOK190X_CMD_DRIVERTIMING	0x5000
-#define AUOK190X_CMD_LBALANCE		0x5001
-#define AUOK190X_CMD_AGINGMODE		0x6000
-#define AUOK190X_CMD_AGINGEXIT		0x6001
-
-/*
- * Common settings for AUOK190X_CMD_INIT
- */
-
-#define AUOK190X_INIT_DATA_FILTER	(0 << 12)
-#define AUOK190X_INIT_DATA_BYPASS	(1 << 12)
-#define AUOK190X_INIT_INVERSE_WHITE	(0 << 9)
-#define AUOK190X_INIT_INVERSE_BLACK	(1 << 9)
-#define AUOK190X_INIT_SCAN_DOWN		(0 << 1)
-#define AUOK190X_INIT_SCAN_UP		(1 << 1)
-#define AUOK190X_INIT_SHIFT_LEFT	(0 << 0)
-#define AUOK190X_INIT_SHIFT_RIGHT	(1 << 0)
-
-/* Common bits to pixels
- *   Mode	15-12	11-8	7-4	3-0
- *   format0	4	3	2	1
- *   format1	3	4	1	2
- */
-
-#define AUOK190X_INIT_FORMAT0		0
-#define AUOK190X_INIT_FORMAT1		(1 << 6)
-
-/*
- * settings for AUOK190X_CMD_RESET
- */
-
-#define AUOK190X_RESET_TCON		(0 << 0)
-#define AUOK190X_RESET_NORMAL		(1 << 0)
-#define AUOK190X_RESET_PON		(1 << 1)
-
-/*
- * AUOK190X_CMD_VERSION
- */
-
-#define AUOK190X_VERSION_TEMP_MASK		(0x1ff)
-#define AUOK190X_VERSION_EPD_MASK		(0xff)
-#define AUOK190X_VERSION_SIZE_INT(_val)		((_val & 0xfc00) >> 10)
-#define AUOK190X_VERSION_SIZE_FLOAT(_val)	((_val & 0x3c0) >> 6)
-#define AUOK190X_VERSION_MODEL(_val)		(_val & 0x3f)
-#define AUOK190X_VERSION_LUT(_val)		(_val & 0xff)
-#define AUOK190X_VERSION_TCON(_val)		((_val & 0xff00) >> 8)
-
-/*
- * update modes for CMD_PARTIALDISP on K1900 and CMD_DDMA on K1901
- */
-
-#define AUOK190X_UPDATE_MODE(_res)		((_res & 0x7) << 12)
-#define AUOK190X_UPDATE_NONFLASH		(1 << 15)
-
-/*
- * track panel specific parameters for common init
- */
-
-struct auok190x_init_data {
-	char *id;
-	struct auok190x_board *board;
-
-	void (*update_partial)(struct auok190xfb_par *par, u16 y1, u16 y2);
-	void (*update_all)(struct auok190xfb_par *par);
-	bool (*need_refresh)(struct auok190xfb_par *par);
-	void (*init)(struct auok190xfb_par *par);
-};
-
-
-extern void auok190x_send_command_nowait(struct auok190xfb_par *par, u16 data);
-extern int auok190x_send_command(struct auok190xfb_par *par, u16 data);
-extern void auok190x_send_cmdargs_nowait(struct auok190xfb_par *par, u16 cmd,
-					 int argc, u16 *argv);
-extern int auok190x_send_cmdargs(struct auok190xfb_par *par, u16 cmd,
-				  int argc, u16 *argv);
-extern void auok190x_send_cmdargs_pixels_nowait(struct auok190xfb_par *par,
-						u16 cmd, int argc, u16 *argv,
-						int size, u16 *data);
-extern int auok190x_send_cmdargs_pixels(struct auok190xfb_par *par, u16 cmd,
-					int argc, u16 *argv, int size,
-					u16 *data);
-extern int auok190x_read_cmdargs(struct auok190xfb_par *par, u16 cmd,
-				  int argc, u16 *argv);
-
-extern int auok190x_common_probe(struct platform_device *pdev,
-				 struct auok190x_init_data *init);
-extern int auok190x_common_remove(struct platform_device *pdev);
-
-extern const struct dev_pm_ops auok190x_pm;

drivers/video/fbdev/core/fb_defio.c

···
 }
 
 /* this is to find and return the vmalloc-ed fb pages */
-static int fb_deferred_io_fault(struct vm_fault *vmf)
+static vm_fault_t fb_deferred_io_fault(struct vm_fault *vmf)
 {
 	unsigned long offset;
 	struct page *page;
···
 EXPORT_SYMBOL_GPL(fb_deferred_io_fsync);
 
 /* vm_ops->page_mkwrite handler */
-static int fb_deferred_io_mkwrite(struct vm_fault *vmf)
+static vm_fault_t fb_deferred_io_mkwrite(struct vm_fault *vmf)
 {
 	struct page *page = vmf->page;
 	struct fb_info *info = vmf->vma->vm_private_data;

drivers/video/fbdev/mmp/fb/mmpfb.c

···
 	/* put videomode list to info structure */
 	videomodes = kcalloc(videomode_num, sizeof(struct fb_videomode),
 			     GFP_KERNEL);
-	if (!videomodes) {
-		dev_err(fbi->dev, "can't malloc video modes\n");
+	if (!videomodes)
 		return -ENOMEM;
-	}
+
 	for (i = 0; i < videomode_num; i++)
 		mmpmode_to_fbmode(&videomodes[i], &mmp_modes[i]);
 	fb_videomode_to_modelist(videomodes, videomode_num, &info->modelist);

drivers/video/fbdev/mmp/hw/mmp_ctrl.c

···
 	dev_info(ctrl->dev, "%s: %s\n", __func__, config->name);
 
 	/* init driver data */
-	path_info = kzalloc(sizeof(struct mmp_path_info), GFP_KERNEL);
-	if (!path_info) {
-		dev_err(ctrl->dev, "%s: unable to alloc path_info for %s\n",
-				__func__, config->name);
+	path_info = kzalloc(sizeof(*path_info), GFP_KERNEL);
+	if (!path_info)
 		return 0;
-	}
+
 	path_info->name = config->name;
 	path_info->id = path_plat->id;
 	path_info->dev = ctrl->dev;

drivers/video/fbdev/nvidia/nvidia.c

···
 		 "(default=0)");
 module_param(noscale, int, 0);
 MODULE_PARM_DESC(noscale,
-		 "Disables screen scaleing. (0 or 1=disable) "
+		 "Disables screen scaling. (0 or 1=disable) "
 		 "(default=0, do scaling)");
 module_param(paneltweak, int, 0);
 MODULE_PARM_DESC(paneltweak,

drivers/video/fbdev/omap/lcd_ams_delta.c

···
 };
 
 module_platform_driver(ams_delta_panel_driver);
+
+MODULE_AUTHOR("Jonathan McDowell <[e-mail]>");
+MODULE_DESCRIPTION("LCD panel support for the Amstrad E3 (Delta) videophone");
+MODULE_LICENSE("GPL");

drivers/video/fbdev/omap/lcd_h3.c

···
 };
 
 module_platform_driver(h3_panel_driver);
+
+MODULE_AUTHOR("Imre Deak");
+MODULE_DESCRIPTION("LCD panel support for the TI OMAP H3 board");
+MODULE_LICENSE("GPL");

drivers/video/fbdev/omap/lcd_htcherald.c

···
 };
 
 module_platform_driver(htcherald_panel_driver);
+
+MODULE_AUTHOR("Cory Maccarrone");
+MODULE_LICENSE("GPL");
+MODULE_DESCRIPTION("LCD panel support for the HTC Herald");

drivers/video/fbdev/omap/lcd_inn1510.c

···
 };
 
 module_platform_driver(innovator1510_panel_driver);
+
+MODULE_AUTHOR("Imre Deak");
+MODULE_DESCRIPTION("LCD panel support for the TI OMAP1510 Innovator board");
+MODULE_LICENSE("GPL");

drivers/video/fbdev/omap/lcd_inn1610.c

···
 };
 
 module_platform_driver(innovator1610_panel_driver);
+
+MODULE_AUTHOR("Imre Deak");
+MODULE_DESCRIPTION("LCD panel support for the TI OMAP1610 Innovator board");
+MODULE_LICENSE("GPL");

drivers/video/fbdev/omap/lcd_osk.c

···
 };
 
 module_platform_driver(osk_panel_driver);
+
+MODULE_AUTHOR("Imre Deak");
+MODULE_DESCRIPTION("LCD panel support for the TI OMAP OSK board");
+MODULE_LICENSE("GPL");

drivers/video/fbdev/omap/lcd_palmte.c

···
 };
 
 module_platform_driver(palmte_panel_driver);
+
+MODULE_AUTHOR("Romain Goyet <[e-mail]>, Laurent Gonzalez <[e-mail]>");
+MODULE_DESCRIPTION("LCD panel support for the Palm Tungsten E");
+MODULE_LICENSE("GPL");

drivers/video/fbdev/omap/lcd_palmtt.c

···
 };
 
 module_platform_driver(palmtt_panel_driver);
+
+MODULE_AUTHOR("Marek Vasut <[e-mail]>");
+MODULE_DESCRIPTION("LCD panel support for Palm Tungsten|T");
+MODULE_LICENSE("GPL");

drivers/video/fbdev/omap/lcd_palmz71.c

···
 };
 
 module_platform_driver(palmz71_panel_driver);
+
+MODULE_AUTHOR("Romain Goyet, Laurent Gonzalez, Marek Vasut");
+MODULE_LICENSE("GPL");
+MODULE_DESCRIPTION("LCD panel support for the Palm Zire71");

drivers/video/fbdev/omap/omapfb_main.c

···
 		goto cleanup;
 	}
 
-	fbdev = kzalloc(sizeof(struct omapfb_device), GFP_KERNEL);
+	fbdev = kzalloc(sizeof(*fbdev), GFP_KERNEL);
 	if (fbdev == NULL) {
 		dev_err(&pdev->dev,
 			"unable to allocate memory for device info\n");

drivers/video/fbdev/omap2/omapfb/Kconfig

···
         tristate "OMAP2+ frame buffer support"
         depends on FB
         depends on DRM_OMAP = n
+	depends on GPIOLIB
 
         select FB_OMAP2_DSS
 	select OMAP2_VRFB if ARCH_OMAP2 || ARCH_OMAP3

drivers/video/fbdev/omap2/omapfb/displays/panel-dsi-cm.c

···
 static ssize_t dsicm_num_errors_show(struct device *dev,
 		struct device_attribute *attr, char *buf)
 {
-	struct platform_device *pdev = to_platform_device(dev);
-	struct panel_drv_data *ddata = platform_get_drvdata(pdev);
+	struct panel_drv_data *ddata = dev_get_drvdata(dev);
 	struct omap_dss_device *in = ddata->in;
 	u8 errors = 0;
 	int r;
···
 static ssize_t dsicm_hw_revision_show(struct device *dev,
 		struct device_attribute *attr, char *buf)
 {
-	struct platform_device *pdev = to_platform_device(dev);
-	struct panel_drv_data *ddata = platform_get_drvdata(pdev);
+	struct panel_drv_data *ddata = dev_get_drvdata(dev);
 	struct omap_dss_device *in = ddata->in;
 	u8 id1, id2, id3;
 	int r;
···
 		struct device_attribute *attr,
 		const char *buf, size_t count)
 {
-	struct platform_device *pdev = to_platform_device(dev);
-	struct panel_drv_data *ddata = platform_get_drvdata(pdev);
+	struct panel_drv_data *ddata = dev_get_drvdata(dev);
 	struct omap_dss_device *in = ddata->in;
 	unsigned long t;
 	int r;
···
 		struct device_attribute *attr,
 		char *buf)
 {
-	struct platform_device *pdev = to_platform_device(dev);
-	struct panel_drv_data *ddata = platform_get_drvdata(pdev);
+	struct panel_drv_data *ddata = dev_get_drvdata(dev);
 	unsigned t;
 
 	mutex_lock(&ddata->lock);
···
 		struct device_attribute *attr,
 		const char *buf, size_t count)
 {
-	struct platform_device *pdev = to_platform_device(dev);
-	struct panel_drv_data *ddata = platform_get_drvdata(pdev);
+	struct panel_drv_data *ddata = dev_get_drvdata(dev);
 	struct omap_dss_device *in = ddata->in;
 	unsigned long t;
 	int r;
···
 		struct device_attribute *attr,
 		char *buf)
 {
-	struct platform_device *pdev = to_platform_device(dev);
-	struct panel_drv_data *ddata = platform_get_drvdata(pdev);
+	struct panel_drv_data *ddata = dev_get_drvdata(dev);
 	unsigned t;
 
 	mutex_lock(&ddata->lock);

drivers/video/fbdev/pxafb.c

···
 	if (ret)
 		s = "color-tft";
 
-	for (i = 0; lcd_types[i]; i++)
-		if (!strcmp(s, lcd_types[i]))
-			break;
-	if (!i || !lcd_types[i]) {
+	i = match_string(lcd_types, -1, s);
+	if (i < 0) {
 		dev_err(dev, "lcd-type %s is unknown\n", s);
-		return -EINVAL;
+		return i;
 	}
 	info->lcd_conn |= LCD_CONN_TYPE(i);
 	info->lcd_conn |= LCD_CONN_WIDTH(bus_width);

drivers/video/fbdev/savage/savagefb_driver.c

···
 	vga_out8(0x3d4, 0x66, par);
 	cr66 = vga_in8(0x3d5, par);
 	vga_out8(0x3d5, cr66 | 0x02, par);
-	mdelay(10);
+	usleep_range(10000, 11000);
 
 	vga_out8(0x3d4, 0x66, par);
 	vga_out8(0x3d5, cr66 & ~0x02, par);	/* clear reset flag */
-	mdelay(10);
+	usleep_range(10000, 11000);
 
 
 	/*
···
 	vga_out8(0x3d4, 0x3f, par);
 	cr3f = vga_in8(0x3d5, par);
 	vga_out8(0x3d5, cr3f | 0x08, par);
-	mdelay(10);
+	usleep_range(10000, 11000);
 
 	vga_out8(0x3d4, 0x3f, par);
 	vga_out8(0x3d5, cr3f & ~0x08, par);	/* clear reset flags */
-	mdelay(10);
+	usleep_range(10000, 11000);
 
 	/* Savage ramdac speeds */
 	par->numClocks = 4;

drivers/video/fbdev/sh_mobile_lcdcfb.c

···
 #include <linux/vmalloc.h>
 
 #include <video/sh_mobile_lcdc.h>
-#include <video/sh_mobile_meram.h>
 
 #include "sh_mobile_lcdcfb.h"
 
···
 	struct notifier_block notifier;
 	int started;
 	int forced_fourcc; /* 2 channel LCDC must share fourcc setting */
-	struct sh_mobile_meram_info *meram_dev;
 };
 
 /* -----------------------------------------------------------------------------
···
 		if (priv->dot_clk)
 			clk_prepare_enable(priv->dot_clk);
 		pm_runtime_get_sync(priv->dev);
-		if (priv->meram_dev && priv->meram_dev->pdev)
-			pm_runtime_get_sync(&priv->meram_dev->pdev->dev);
 	}
 }
 
 static void sh_mobile_lcdc_clk_off(struct sh_mobile_lcdc_priv *priv)
 {
 	if (atomic_sub_return(1, &priv->hw_usecnt) == -1) {
-		if (priv->meram_dev && priv->meram_dev->pdev)
-			pm_runtime_put_sync(&priv->meram_dev->pdev->dev);
 		pm_runtime_put(priv->dev);
 		if (priv->dot_clk)
 			clk_disable_unprepare(priv->dot_clk);
···
 
 static int sh_mobile_lcdc_start(struct sh_mobile_lcdc_priv *priv)
 {
-	struct sh_mobile_meram_info *mdev = priv->meram_dev;
 	struct sh_mobile_lcdc_chan *ch;
 	unsigned long tmp;
 	int ret;
···
 
 	/* Compute frame buffer base address and pitch for each channel. */
 	for (k = 0; k < ARRAY_SIZE(priv->ch); k++) {
-		int pixelformat;
-		void *cache;
-
 		ch = &priv->ch[k];
 		if (!ch->enabled)
 			continue;
···
 		ch->base_addr_c = ch->dma_handle
 				+ ch->xres_virtual * ch->yres_virtual;
 		ch->line_size = ch->pitch;
-
-		/* Enable MERAM if possible. */
-		if (mdev == NULL || ch->cfg->meram_cfg == NULL)
-			continue;
-
-		/* Free the allocated MERAM cache. */
-		if (ch->cache) {
-			sh_mobile_meram_cache_free(mdev, ch->cache);
-			ch->cache = NULL;
-		}
-
-		switch (ch->format->fourcc) {
-		case V4L2_PIX_FMT_NV12:
-		case V4L2_PIX_FMT_NV21:
-		case V4L2_PIX_FMT_NV16:
-		case V4L2_PIX_FMT_NV61:
-			pixelformat = SH_MOBILE_MERAM_PF_NV;
-			break;
-		case V4L2_PIX_FMT_NV24:
-		case V4L2_PIX_FMT_NV42:
-			pixelformat = SH_MOBILE_MERAM_PF_NV24;
-			break;
-		case V4L2_PIX_FMT_RGB565:
-		case V4L2_PIX_FMT_BGR24:
-		case V4L2_PIX_FMT_BGR32:
-		default:
-			pixelformat = SH_MOBILE_MERAM_PF_RGB;
-			break;
-		}
-
-		cache = sh_mobile_meram_cache_alloc(mdev, ch->cfg->meram_cfg,
-					ch->pitch, ch->yres, pixelformat,
-					&ch->line_size);
-		if (!IS_ERR(cache)) {
-			sh_mobile_meram_cache_update(mdev, cache,
-					ch->base_addr_y, ch->base_addr_c,
-					&ch->base_addr_y, &ch->base_addr_c);
-			ch->cache = cache;
-		}
 	}
 
 	for (k = 0; k < ARRAY_SIZE(priv->overlays); ++k) {
···
 		}
 
 		sh_mobile_lcdc_display_off(ch);
-
-		/* Free the MERAM cache. */
-		if (ch->cache) {
-			sh_mobile_meram_cache_free(priv->meram_dev, ch->cache);
-			ch->cache = NULL;
-		}
-
 	}
 
 	/* stop the lcdc */
···
 	base_addr_c = ch->dma_handle + ch->xres_virtual * ch->yres_virtual
 		    + c_offset;
 
-	if (ch->cache)
-		sh_mobile_meram_cache_update(priv->meram_dev, ch->cache,
-					     base_addr_y, base_addr_c,
-					     &base_addr_y, &base_addr_c);
-
 	ch->base_addr_y = base_addr_y;
 	ch->base_addr_c = base_addr_c;
 	ch->pan_y_offset = y_offset;
···
 	if (info->fbdefio) {
 		ch->sglist = vmalloc(sizeof(struct scatterlist) *
 				     ch->fb_size >> PAGE_SHIFT);
-		if (!ch->sglist) {
-			dev_err(ch->lcdc->dev, "cannot allocate sglist\n");
+		if (!ch->sglist)
 			return -ENOMEM;
-		}
 	}
 
 	info->bl_dev = ch->bl;
···
 
 static int sh_mobile_lcdc_runtime_suspend(struct device *dev)
 {
-	struct platform_device *pdev = to_platform_device(dev);
-	struct sh_mobile_lcdc_priv *priv = platform_get_drvdata(pdev);
+	struct sh_mobile_lcdc_priv *priv = dev_get_drvdata(dev);
 
 	/* turn off LCDC hardware */
 	lcdc_write(priv, _LDCNT1R, 0);
···
 
 static int sh_mobile_lcdc_runtime_resume(struct device *dev)
 {
-	struct platform_device *pdev = to_platform_device(dev);
-	struct sh_mobile_lcdc_priv *priv = platform_get_drvdata(pdev);
+	struct sh_mobile_lcdc_priv *priv = dev_get_drvdata(dev);
 
 	__sh_mobile_lcdc_start(priv);
 
···
 	}
 
 	priv = kzalloc(sizeof(*priv), GFP_KERNEL);
-	if (!priv) {
-		dev_err(&pdev->dev, "cannot allocate device data\n");
+	if (!priv)
 		return -ENOMEM;
-	}
 
 	priv->dev = &pdev->dev;
-	priv->meram_dev = pdata->meram_dev;
+
 	for (i = 0; i < ARRAY_SIZE(priv->ch); i++)
 		mutex_init(&priv->ch[i].open_lock);
 	platform_set_drvdata(pdev, priv);

drivers/video/fbdev/sh_mobile_lcdcfb.h

···
 	unsigned long *reg_offs;
 	unsigned long ldmt1r_value;
 	unsigned long enabled; /* ME and SE in LDCNT2R */
-	void *cache;
 
 	struct mutex open_lock;		/* protects the use counter */
 	int use_count;

drivers/video/fbdev/sh_mobile_meram.c

···
-/*
- * SuperH Mobile MERAM Driver for SuperH Mobile LCDC Driver
- *
- * Copyright (c) 2011	Damian Hobson-Garcia <[e-mail]>
- *                      Takanari Hayama <[e-mail]>
- *
- * This file is subject to the terms and conditions of the GNU General Public
- * License.  See the file "COPYING" in the main directory of this archive
- * for more details.
- */
-
-#include <linux/device.h>
-#include <linux/err.h>
-#include <linux/export.h>
-#include <linux/genalloc.h>
-#include <linux/io.h>
-#include <linux/kernel.h>
-#include <linux/module.h>
-#include <linux/platform_device.h>
-#include <linux/pm_runtime.h>
-#include <linux/slab.h>
-
-#include <video/sh_mobile_meram.h>
-
-/* -----------------------------------------------------------------------------
- * MERAM registers
- */
-
-#define MEVCR1			0x4
-#define MEVCR1_RST		(1 << 31)
-#define MEVCR1_WD		(1 << 30)
-#define MEVCR1_AMD1		(1 << 29)
-#define MEVCR1_AMD0		(1 << 28)
-#define MEQSEL1			0x40
-#define MEQSEL2			0x44
-
-#define MExxCTL			0x400
-#define MExxCTL_BV		(1 << 31)
-#define MExxCTL_BSZ_SHIFT	28
-#define MExxCTL_MSAR_MASK	(0x7ff << MExxCTL_MSAR_SHIFT)
-#define MExxCTL_MSAR_SHIFT	16
-#define MExxCTL_NXT_MASK	(0x1f << MExxCTL_NXT_SHIFT)
-#define MExxCTL_NXT_SHIFT	11
-#define MExxCTL_WD1		(1 << 10)
-#define MExxCTL_WD0		(1 << 9)
-#define MExxCTL_WS		(1 << 8)
-#define MExxCTL_CB		(1 << 7)
-#define MExxCTL_WBF		(1 << 6)
-#define MExxCTL_WF		(1 << 5)
-#define MExxCTL_RF		(1 << 4)
-#define MExxCTL_CM		(1 << 3)
-#define MExxCTL_MD_READ		(1 << 0)
-#define MExxCTL_MD_WRITE	(2 << 0)
-#define MExxCTL_MD_ICB_WB	(3 << 0)
-#define MExxCTL_MD_ICB		(4 << 0)
-#define MExxCTL_MD_FB		(7 << 0)
-#define MExxCTL_MD_MASK		(7 << 0)
-#define MExxBSIZE		0x404
-#define MExxBSIZE_RCNT_SHIFT	28
-#define MExxBSIZE_YSZM1_SHIFT	16
-#define MExxBSIZE_XSZM1_SHIFT	0
-#define MExxMNCF		0x408
-#define MExxMNCF_KWBNM_SHIFT	28
-#define MExxMNCF_KRBNM_SHIFT	24
-#define MExxMNCF_BNM_SHIFT	16
-#define MExxMNCF_XBV		(1 << 15)
-#define MExxMNCF_CPL_YCBCR444	(1 << 12)
-#define MExxMNCF_CPL_YCBCR420	(2 << 12)
-#define MExxMNCF_CPL_YCBCR422	(3 << 12)
-#define MExxMNCF_CPL_MSK	(3 << 12)
-#define MExxMNCF_BL		(1 << 2)
-#define MExxMNCF_LNM_SHIFT	0
-#define MExxSARA		0x410
-#define MExxSARB		0x414
-#define MExxSBSIZE		0x418
-#define MExxSBSIZE_HDV		(1 << 31)
-#define MExxSBSIZE_HSZ16	(0 << 28)
-#define MExxSBSIZE_HSZ32	(1 << 28)
-#define MExxSBSIZE_HSZ64	(2 << 28)
-#define MExxSBSIZE_HSZ128	(3 << 28)
-#define MExxSBSIZE_SBSIZZ_SHIFT	0
-
-#define MERAM_MExxCTL_VAL(next, addr)	\
-	((((next) << MExxCTL_NXT_SHIFT) & MExxCTL_NXT_MASK) | \
-	 (((addr) << MExxCTL_MSAR_SHIFT) & MExxCTL_MSAR_MASK))
-#define	MERAM_MExxBSIZE_VAL(rcnt, yszm1, xszm1) \
-	(((rcnt) << MExxBSIZE_RCNT_SHIFT) | \
-	 ((yszm1) << MExxBSIZE_YSZM1_SHIFT) | \
-	 ((xszm1) << MExxBSIZE_XSZM1_SHIFT))
-
-static const unsigned long common_regs[] = {
-	MEVCR1,
-	MEQSEL1,
-	MEQSEL2,
-};
-#define MERAM_REGS_SIZE ARRAY_SIZE(common_regs)
-
-static const unsigned long icb_regs[] = {
-	MExxCTL,
-	MExxBSIZE,
-	MExxMNCF,
-	MExxSARA,
-	MExxSARB,
-	MExxSBSIZE,
-};
-#define ICB_REGS_SIZE ARRAY_SIZE(icb_regs)
-
-/*
- * sh_mobile_meram_icb - MERAM ICB information
- * @regs: Registers cache
- * @index: ICB index
- * @offset: MERAM block offset
- * @size: MERAM block size in KiB
- * @cache_unit: Bytes to cache per ICB
- * @pixelformat: Video pixel format of the data stored in the ICB
- * @current_reg: Which of Start Address Register A (0) or B (1) is in use
- */
-struct sh_mobile_meram_icb {
-	unsigned long regs[ICB_REGS_SIZE];
-	unsigned int index;
-	unsigned long offset;
-	unsigned int size;
-
-	unsigned int cache_unit;
-	unsigned int pixelformat;
-	unsigned int current_reg;
-};
-
-#define MERAM_ICB_NUM			32
-
-struct sh_mobile_meram_fb_plane {
-	struct sh_mobile_meram_icb *marker;
-	struct sh_mobile_meram_icb *cache;
-};
-
-struct sh_mobile_meram_fb_cache {
-	unsigned int nplanes;
-	struct sh_mobile_meram_fb_plane planes[2];
-};
-
-/*
- * sh_mobile_meram_priv - MERAM device
- * @base: Registers base address
- * @meram: MERAM physical address
- * @regs: Registers cache
- * @lock: Protects used_icb and icbs
- * @used_icb: Bitmask of used ICBs
- * @icbs: ICBs
- * @pool: Allocation pool to manage the MERAM
- */
-struct sh_mobile_meram_priv {
-	void __iomem *base;
-	unsigned long meram;
-	unsigned long regs[MERAM_REGS_SIZE];
-
-	struct mutex lock;
-	unsigned long used_icb;
-	struct sh_mobile_meram_icb icbs[MERAM_ICB_NUM];
-
-	struct gen_pool *pool;
-};
-
-/* settings */
-#define MERAM_GRANULARITY		1024
-#define MERAM_SEC_LINE			15
-#define MERAM_LINE_WIDTH		2048
-
-/* -----------------------------------------------------------------------------
- * Registers access
- */
-
-#define MERAM_ICB_OFFSET(base, idx, off)	((base) + (off) + (idx) * 0x20)
-
-static inline void meram_write_icb(void __iomem *base, unsigned int idx,
-				   unsigned int off, unsigned long val)
-{
-	iowrite32(val, MERAM_ICB_OFFSET(base, idx, off));
-}
-
-static inline unsigned long meram_read_icb(void __iomem *base, unsigned int idx,
-					   unsigned int off)
-{
-	return ioread32(MERAM_ICB_OFFSET(base, idx, off));
-}
-
-static inline void meram_write_reg(void __iomem *base, unsigned int off,
-				   unsigned long val)
-{
-	iowrite32(val, base + off);
-}
-
-static inline unsigned long meram_read_reg(void __iomem *base, unsigned int off)
-{
-	return ioread32(base + off);
-}
-
-/* -----------------------------------------------------------------------------
- * MERAM allocation and free
- */
-
-static unsigned long meram_alloc(struct sh_mobile_meram_priv *priv, size_t size)
-{
-	return gen_pool_alloc(priv->pool, size);
-}
-
-static void meram_free(struct sh_mobile_meram_priv *priv, unsigned long mem,
-		       size_t size)
-{
-	gen_pool_free(priv->pool, mem, size);
-}
-
-/* -----------------------------------------------------------------------------
- * LCDC cache planes allocation, init, cleanup and free
- */
-
-/* Allocate ICBs and MERAM for a plane. */
-static int meram_plane_alloc(struct sh_mobile_meram_priv *priv,
-			     struct sh_mobile_meram_fb_plane *plane,
-			     size_t size)
-{
-	unsigned long mem;
-	unsigned long idx;
-
-	idx = find_first_zero_bit(&priv->used_icb, 28);
-	if (idx == 28)
-		return -ENOMEM;
-	plane->cache = &priv->icbs[idx];
-
-	idx = find_next_zero_bit(&priv->used_icb, 32, 28);
-	if (idx == 32)
-		return -ENOMEM;
-	plane->marker = &priv->icbs[idx];
-
-	mem = meram_alloc(priv, size * 1024);
-	if (mem == 0)
-		return -ENOMEM;
-
-	__set_bit(plane->marker->index, &priv->used_icb);
-	__set_bit(plane->cache->index, &priv->used_icb);
-
-	plane->marker->offset = mem - priv->meram;
-	plane->marker->size = size;
-
-	return 0;
-}
-
-/* Free ICBs and MERAM for a plane. */
-static void meram_plane_free(struct sh_mobile_meram_priv *priv,
-			     struct sh_mobile_meram_fb_plane *plane)
-{
-	meram_free(priv, priv->meram + plane->marker->offset,
-		   plane->marker->size * 1024);
-
-	__clear_bit(plane->marker->index, &priv->used_icb);
-	__clear_bit(plane->cache->index, &priv->used_icb);
-}
-
-/* Is this a YCbCr(NV12, NV16 or NV24) colorspace? */
-static int is_nvcolor(int cspace)
-{
-	if (cspace == SH_MOBILE_MERAM_PF_NV ||
-	    cspace == SH_MOBILE_MERAM_PF_NV24)
-		return 1;
-	return 0;
-}
-
-/* Set the next address to fetch. */
-static void meram_set_next_addr(struct sh_mobile_meram_priv *priv,
-				struct sh_mobile_meram_fb_cache *cache,
-				unsigned long base_addr_y,
-				unsigned long base_addr_c)
-{
-	struct sh_mobile_meram_icb *icb = cache->planes[0].marker;
-	unsigned long target;
-
-	icb->current_reg ^= 1;
-	target = icb->current_reg ? MExxSARB : MExxSARA;
-
-	/* set the next address to fetch */
-	meram_write_icb(priv->base, cache->planes[0].cache->index, target,
-			base_addr_y);
-	meram_write_icb(priv->base, cache->planes[0].marker->index, target,
-			base_addr_y + cache->planes[0].marker->cache_unit);
-
-	if (cache->nplanes == 2) {
-		meram_write_icb(priv->base, cache->planes[1].cache->index,
-				target, base_addr_c);
-		meram_write_icb(priv->base, cache->planes[1].marker->index,
-				target, base_addr_c +
-				cache->planes[1].marker->cache_unit);
-	}
-}
-
-/* Get the next ICB address. */
-static void
-meram_get_next_icb_addr(struct sh_mobile_meram_info *pdata,
-			struct sh_mobile_meram_fb_cache *cache,
-			unsigned long *icb_addr_y, unsigned long *icb_addr_c)
-{
-	struct sh_mobile_meram_icb *icb = cache->planes[0].marker;
-	unsigned long icb_offset;
-
-	if (pdata->addr_mode == SH_MOBILE_MERAM_MODE0)
-		icb_offset = 0x80000000 | (icb->current_reg << 29);
-	else
-		icb_offset = 0xc0000000 | (icb->current_reg << 23);
-
-	*icb_addr_y = icb_offset | (cache->planes[0].marker->index << 24);
-	if (cache->nplanes == 2)
-		*icb_addr_c = icb_offset
-			    | (cache->planes[1].marker->index << 24);
-}
-
-#define MERAM_CALC_BYTECOUNT(x, y) \
-	(((x) * (y) + (MERAM_LINE_WIDTH - 1)) & ~(MERAM_LINE_WIDTH - 1))
-
-/* Initialize MERAM. */
-static int meram_plane_init(struct sh_mobile_meram_priv *priv,
-			    struct sh_mobile_meram_fb_plane *plane,
-			    unsigned int xres, unsigned int yres,
-			    unsigned int *out_pitch)
-{
-	struct sh_mobile_meram_icb *marker = plane->marker;
-	unsigned long total_byte_count = MERAM_CALC_BYTECOUNT(xres, yres);
-	unsigned long bnm;
-	unsigned int lcdc_pitch;
-	unsigned int xpitch;
-	unsigned int line_cnt;
-	unsigned int save_lines;
-
-	/* adjust pitch to 1024, 2048, 4096 or 8192 */
-	lcdc_pitch = (xres - 1) | 1023;
-	lcdc_pitch = lcdc_pitch | (lcdc_pitch >> 1);
-	lcdc_pitch = lcdc_pitch | (lcdc_pitch >> 2);
-	lcdc_pitch += 1;
-
-	/* derive settings */
-	if (lcdc_pitch == 8192 && yres >= 1024) {
-		lcdc_pitch = xpitch = MERAM_LINE_WIDTH;
-		line_cnt = total_byte_count >> 11;
-		*out_pitch = xres;
-		save_lines = plane->marker->size / 16 / MERAM_SEC_LINE;
-		save_lines *= MERAM_SEC_LINE;
-	} else {
-		xpitch = xres;
-		line_cnt = yres;
-		*out_pitch = lcdc_pitch;
-		save_lines = plane->marker->size / (lcdc_pitch >> 10) / 2;
-		save_lines &= 0xff;
-	}
-	bnm = (save_lines - 1) << 16;
-
-	/* TODO: we better to check if we have enough MERAM buffer size */
-
-	/* set up ICB */
-	meram_write_icb(priv->base, plane->cache->index,  MExxBSIZE,
-			MERAM_MExxBSIZE_VAL(0x0, line_cnt - 1, xpitch - 1));
-	meram_write_icb(priv->base, plane->marker->index, MExxBSIZE,
-			MERAM_MExxBSIZE_VAL(0xf, line_cnt - 1, xpitch - 1));
-
-	meram_write_icb(priv->base, plane->cache->index,  MExxMNCF, bnm);
-	meram_write_icb(priv->base, plane->marker->index, MExxMNCF, bnm);
-
-	meram_write_icb(priv->base, plane->cache->index,  MExxSBSIZE, xpitch);
-	meram_write_icb(priv->base, plane->marker->index, MExxSBSIZE, xpitch);
-
-	/* save a cache unit size */
-	plane->cache->cache_unit = xres * save_lines;
-	plane->marker->cache_unit = xres * save_lines;
-
-	/*
-	 * Set MERAM for framebuffer
-	 *
-	 * we also chain the cache_icb and the marker_icb.
-	 * we also split the allocated MERAM buffer between two ICBs.
-	 */
-	meram_write_icb(priv->base, plane->cache->index, MExxCTL,
-			MERAM_MExxCTL_VAL(plane->marker->index, marker->offset)
-			| MExxCTL_WD1 | MExxCTL_WD0 | MExxCTL_WS | MExxCTL_CM |
-			MExxCTL_MD_FB);
-	meram_write_icb(priv->base, plane->marker->index, MExxCTL,
-			MERAM_MExxCTL_VAL(plane->cache->index, marker->offset +
-					  plane->marker->size / 2) |
-			MExxCTL_WD1 | MExxCTL_WD0 | MExxCTL_WS | MExxCTL_CM |
-			MExxCTL_MD_FB);
-
-	return 0;
-}
-
-static void meram_plane_cleanup(struct sh_mobile_meram_priv *priv,
-				struct sh_mobile_meram_fb_plane *plane)
-{
-	/* disable ICB */
-	meram_write_icb(priv->base, plane->cache->index,  MExxCTL,
-			MExxCTL_WBF | MExxCTL_WF | MExxCTL_RF);
-	meram_write_icb(priv->base, plane->marker->index, MExxCTL,
-			MExxCTL_WBF | MExxCTL_WF | MExxCTL_RF);
-
-	plane->cache->cache_unit = 0;
-	plane->marker->cache_unit = 0;
-}
-
-/* -----------------------------------------------------------------------------
- * MERAM operations
- */
-
-unsigned long sh_mobile_meram_alloc(struct sh_mobile_meram_info *pdata,
-				    size_t size)
-{
-	struct sh_mobile_meram_priv *priv = pdata->priv;
-
-	return meram_alloc(priv, size);
-}
-EXPORT_SYMBOL_GPL(sh_mobile_meram_alloc);
-
-void sh_mobile_meram_free(struct sh_mobile_meram_info *pdata, unsigned long mem,
-			  size_t size)
-{
-	struct sh_mobile_meram_priv *priv = pdata->priv;
-
-	meram_free(priv, mem, size);
-}
-EXPORT_SYMBOL_GPL(sh_mobile_meram_free);
-
-/* Allocate memory for the ICBs and mark them as used. */
-static struct sh_mobile_meram_fb_cache *
-meram_cache_alloc(struct sh_mobile_meram_priv *priv,
-		  const struct sh_mobile_meram_cfg *cfg,
-		  int pixelformat)
-{
-	unsigned int nplanes = is_nvcolor(pixelformat) ? 2 : 1;
-	struct sh_mobile_meram_fb_cache *cache;
-	int ret;
-
-	cache = kzalloc(sizeof(*cache), GFP_KERNEL);
-	if (cache == NULL)
-		return ERR_PTR(-ENOMEM);
-
-	cache->nplanes = nplanes;
-
-	ret = meram_plane_alloc(priv, &cache->planes[0],
-				cfg->icb[0].meram_size);
-	if (ret < 0)
-		goto error;
-
-	cache->planes[0].marker->current_reg = 1;
-	cache->planes[0].marker->pixelformat = pixelformat;
-
-	if (cache->nplanes == 1)
-		return cache;
-
-	ret = meram_plane_alloc(priv, &cache->planes[1],
-				cfg->icb[1].meram_size);
-	if (ret < 0) {
-		meram_plane_free(priv, &cache->planes[0]);
-		goto error;
-	}
-
-	return cache;
-
-error:
-	kfree(cache);
-	return ERR_PTR(-ENOMEM);
-}
-
-void *sh_mobile_meram_cache_alloc(struct sh_mobile_meram_info *pdata,
-				  const struct sh_mobile_meram_cfg *cfg,
-				  unsigned int xres, unsigned int yres,
-				  unsigned int pixelformat, unsigned int *pitch)
-{
-	struct sh_mobile_meram_fb_cache *cache;
-	struct sh_mobile_meram_priv *priv = pdata->priv;
-	struct platform_device *pdev = pdata->pdev;
-	unsigned int nplanes = is_nvcolor(pixelformat) ? 2 : 1;
-	unsigned int out_pitch;
-
-	if (priv == NULL)
-		return ERR_PTR(-ENODEV);
-
-	if (pixelformat != SH_MOBILE_MERAM_PF_NV &&
-	    pixelformat != SH_MOBILE_MERAM_PF_NV24 &&
-	    pixelformat != SH_MOBILE_MERAM_PF_RGB)
-		return ERR_PTR(-EINVAL);
-
-	dev_dbg(&pdev->dev, "registering %dx%d (%s)", xres, yres,
-		!pixelformat ? "yuv" : "rgb");
-
-	/* we can't handle wider than 8192px */
-	if (xres > 8192) {
-		dev_err(&pdev->dev, "width exceeding the limit (> 8192).");
-		return ERR_PTR(-EINVAL);
-	}
-
-	if (cfg->icb[0].meram_size == 0)
-		return ERR_PTR(-EINVAL);
-
-	if (nplanes == 2 && cfg->icb[1].meram_size == 0)
-		return ERR_PTR(-EINVAL);
-
-	mutex_lock(&priv->lock);
-
-	/* We now register the ICBs and allocate the MERAM regions. */
-	cache = meram_cache_alloc(priv, cfg, pixelformat);
-	if (IS_ERR(cache)) {
-		dev_err(&pdev->dev, "MERAM allocation failed (%ld).",
-			PTR_ERR(cache));
-		goto err;
-	}
-
-	/* initialize MERAM */
-	meram_plane_init(priv, &cache->planes[0], xres, yres, &out_pitch);
-	*pitch = out_pitch;
-	if (pixelformat == SH_MOBILE_MERAM_PF_NV)
-		meram_plane_init(priv, &cache->planes[1],
-				 xres, (yres + 1) / 2, &out_pitch);
-	else if (pixelformat == SH_MOBILE_MERAM_PF_NV24)
-		meram_plane_init(priv, &cache->planes[1],
-				 2 * xres, (yres + 1) / 2, &out_pitch);
-
-err:
-	mutex_unlock(&priv->lock);
-	return cache;
-}
-EXPORT_SYMBOL_GPL(sh_mobile_meram_cache_alloc);
-
-void
-sh_mobile_meram_cache_free(struct sh_mobile_meram_info *pdata, void *data)
-{
-	struct sh_mobile_meram_fb_cache *cache = data;
-	struct sh_mobile_meram_priv *priv = pdata->priv;
-
-	mutex_lock(&priv->lock);
-
-	/* Cleanup and free. */
-	meram_plane_cleanup(priv, &cache->planes[0]);
-	meram_plane_free(priv, &cache->planes[0]);
-
-	if (cache->nplanes == 2) {
-		meram_plane_cleanup(priv, &cache->planes[1]);
-		meram_plane_free(priv, &cache->planes[1]);
-	}
-
-	kfree(cache);
-
-	mutex_unlock(&priv->lock);
-}
-EXPORT_SYMBOL_GPL(sh_mobile_meram_cache_free);
-
-void
-sh_mobile_meram_cache_update(struct sh_mobile_meram_info *pdata, void *data,
-			     unsigned long base_addr_y,
-			     unsigned long base_addr_c,
-			     unsigned long *icb_addr_y,
-			     unsigned long *icb_addr_c)
-{
-	struct sh_mobile_meram_fb_cache *cache = data;
-	struct sh_mobile_meram_priv *priv = pdata->priv;
-
-	mutex_lock(&priv->lock);
-
-	meram_set_next_addr(priv, cache, base_addr_y, base_addr_c);
-	meram_get_next_icb_addr(pdata, cache, icb_addr_y, icb_addr_c);
-
-	mutex_unlock(&priv->lock);
-}
-EXPORT_SYMBOL_GPL(sh_mobile_meram_cache_update);
-
-/* -----------------------------------------------------------------------------
- * Power management
- */
-
-#ifdef CONFIG_PM
-static int sh_mobile_meram_suspend(struct device *dev)
-{
-	struct platform_device *pdev = to_platform_device(dev);
-	struct sh_mobile_meram_priv *priv = platform_get_drvdata(pdev);
-	unsigned int i, j;
-
-	for (i = 0; i < MERAM_REGS_SIZE; i++)
-		priv->regs[i] = meram_read_reg(priv->base, common_regs[i]);
-
-	for (i = 0; i < 32; i++) {
-		if (!test_bit(i, &priv->used_icb))
-			continue;
-		for (j = 0; j < ICB_REGS_SIZE; j++) {
-			priv->icbs[i].regs[j] =
-				meram_read_icb(priv->base, i, icb_regs[j]);
-			/* Reset ICB on resume */
-			if (icb_regs[j] == MExxCTL)
-				priv->icbs[i].regs[j] |=
-					MExxCTL_WBF | MExxCTL_WF | MExxCTL_RF;
-		}
-	}
-	return 0;
-}
-
-static int sh_mobile_meram_resume(struct device *dev)
-{
-	struct platform_device *pdev = to_platform_device(dev);
-	struct sh_mobile_meram_priv *priv = platform_get_drvdata(pdev);
-	unsigned int i, j;
-
-	for (i = 0; i < 32; i++) {
-		if (!test_bit(i, &priv->used_icb))
-			continue;
-		for (j = 0; j < ICB_REGS_SIZE; j++)
-			meram_write_icb(priv->base, i, icb_regs[j],
-					priv->icbs[i].regs[j]);
-	}
-
-	for (i = 0; i < MERAM_REGS_SIZE; i++)
-		meram_write_reg(priv->base, common_regs[i], priv->regs[i]);
-	return 0;
-}
-#endif /* CONFIG_PM */
-
-static UNIVERSAL_DEV_PM_OPS(sh_mobile_meram_dev_pm_ops,
-			    sh_mobile_meram_suspend,
-			    sh_mobile_meram_resume, NULL);
-
-/* -----------------------------------------------------------------------------
- * Probe/remove and driver init/exit
- */
-
-static int sh_mobile_meram_probe(struct platform_device *pdev)
-{
-	struct sh_mobile_meram_priv *priv;
-	struct sh_mobile_meram_info *pdata = pdev->dev.platform_data;
-	struct resource *regs;
-	struct resource *meram;
-	unsigned int i;
-	int error;
-
-	if (!pdata) {
-		dev_err(&pdev->dev, "no platform data defined\n");
-		return -EINVAL;
-	}
-
-	regs = platform_get_resource(pdev, IORESOURCE_MEM, 0);
-	meram = platform_get_resource(pdev, IORESOURCE_MEM, 1);
-	if (regs == NULL || meram == NULL) {
-		dev_err(&pdev->dev, "cannot get platform resources\n");
-		return -ENOENT;
-	}
-
-	priv = kzalloc(sizeof(*priv), GFP_KERNEL);
-	if (!priv) {
-		dev_err(&pdev->dev, "cannot allocate device data\n");
-		return -ENOMEM;
-	}
-
-	/* Initialize private data. */
-	mutex_init(&priv->lock);
-	priv->used_icb = pdata->reserved_icbs;
-
-	for (i = 0; i < MERAM_ICB_NUM; ++i)
-		priv->icbs[i].index = i;
-
-	pdata->priv = priv;
-	pdata->pdev = pdev;
-
-	/* Request memory regions and remap the registers. */
-	if (!request_mem_region(regs->start, resource_size(regs), pdev->name)) {
-		dev_err(&pdev->dev, "MERAM registers region already claimed\n");
-		error = -EBUSY;
-		goto err_req_regs;
-	}
-
-	if (!request_mem_region(meram->start, resource_size(meram),
-				pdev->name)) {
-		dev_err(&pdev->dev, "MERAM memory region already claimed\n");
-		error = -EBUSY;
-		goto err_req_meram;
-	}
-
-	priv->base = ioremap_nocache(regs->start, resource_size(regs));
-	if (!priv->base) {
-		dev_err(&pdev->dev, "ioremap failed\n");
-		error = -EFAULT;
-		goto err_ioremap;
-	}
-
-	priv->meram = meram->start;
-
-	/* Create and initialize the MERAM memory pool. */
-	priv->pool = gen_pool_create(ilog2(MERAM_GRANULARITY), -1);
-	if (priv->pool == NULL) {
-		error = -ENOMEM;
-		goto err_genpool;
-	}
-
-	error = gen_pool_add(priv->pool, meram->start, resource_size(meram),
-			     -1);
-	if (error < 0)
-		goto err_genpool;
-
-	/* initialize ICB addressing mode */
-	if (pdata->addr_mode == SH_MOBILE_MERAM_MODE1)
-		meram_write_reg(priv->base, MEVCR1, MEVCR1_AMD1);
-
-	platform_set_drvdata(pdev, priv);
-	pm_runtime_enable(&pdev->dev);
-
-	dev_info(&pdev->dev, "sh_mobile_meram initialized.");
-
-	return 0;
-
-err_genpool:
-	if (priv->pool)
-		gen_pool_destroy(priv->pool);
-	iounmap(priv->base);
-err_ioremap:
-	release_mem_region(meram->start, resource_size(meram));
-err_req_meram:
-	release_mem_region(regs->start, resource_size(regs));
-err_req_regs:
-	mutex_destroy(&priv->lock);
-	kfree(priv);
-
-	return error;
-}
-
-
-static int sh_mobile_meram_remove(struct platform_device *pdev)
-{
-	struct sh_mobile_meram_priv *priv = platform_get_drvdata(pdev);
-	struct resource *regs = platform_get_resource(pdev, IORESOURCE_MEM, 0);
-	struct resource *meram = platform_get_resource(pdev, IORESOURCE_MEM, 1);
-
-	pm_runtime_disable(&pdev->dev);
-
-	gen_pool_destroy(priv->pool);
-
-	iounmap(priv->base);
-	release_mem_region(meram->start, resource_size(meram));
-	release_mem_region(regs->start, resource_size(regs));
-
-	mutex_destroy(&priv->lock);
-
-	kfree(priv);
-
-	return 0;
-}
-
-static struct platform_driver sh_mobile_meram_driver = {
-	.driver	= {
-		.name		= "sh_mobile_meram",
-		.pm		= &sh_mobile_meram_dev_pm_ops,
-	},
-	.probe		= sh_mobile_meram_probe,
-	.remove		= sh_mobile_meram_remove,
-};
-
-module_platform_driver(sh_mobile_meram_driver);
-
-MODULE_DESCRIPTION("SuperH Mobile MERAM driver");
-MODULE_AUTHOR("Damian Hobson-Garcia / Takanari Hayama");
-MODULE_LICENSE("GPL v2");

drivers/video/fbdev/sm501fb.c

···
 	int ret;
 
 	/* allocate our framebuffers */
-
-	info = kzalloc(sizeof(struct sm501fb_info), GFP_KERNEL);
+	info = kzalloc(sizeof(*info), GFP_KERNEL);
 	if (!info) {
 		dev_err(dev, "failed to allocate state\n");
 		return -ENOMEM;

drivers/video/fbdev/via/global.h

···
 #include <linux/console.h>
 #include <linux/timer.h>
 
+#ifdef CONFIG_X86
+#include <asm/olpc.h>
+#else
+#define machine_is_olpc(x) 0
+#endif
+
 #include "debug.h"
 
 #include "viafbdev.h"

drivers/video/fbdev/via/hw.c

···
  */
 
 #include <linux/via-core.h>
-#include <asm/olpc.h>
 #include "global.h"
 #include "via_clock.h"
 

drivers/video/fbdev/via/via-core.c

···
 #include <linux/platform_device.h>
 #include <linux/list.h>
 #include <linux/pm.h>
-#include <asm/olpc.h>
 
 /*
  * The default port config.

drivers/video/fbdev/via/via_clock.c

···
 
 #include <linux/kernel.h>
 #include <linux/via-core.h>
-#include <asm/olpc.h>
+
 #include "via_clock.h"
 #include "global.h"
 #include "debug.h"

drivers/video/fbdev/via/viafbdev.c

···
 #include <linux/stat.h>
 #include <linux/via-core.h>
 #include <linux/via_i2c.h>
-#include <asm/olpc.h>
 
 #define _MASTER_FILE
 #include "global.h"

include/linux/platform_data/shmob_drm.h

···
 
 #include <drm/drm_mode.h>
 
-struct sh_mobile_meram_cfg;
-struct sh_mobile_meram_info;
-
 enum shmob_drm_clk_source {
 	SHMOB_DRM_CLK_BUS,
 	SHMOB_DRM_CLK_PERIPHERAL,
···
 	struct shmob_drm_interface_data iface;
 	struct shmob_drm_panel_data panel;
 	struct shmob_drm_backlight_data backlight;
-	const struct sh_mobile_meram_cfg *meram;
 };
 
 #endif /* __SHMOB_DRM_H__ */

include/video/auo_k190xfb.h

···
-/*
- * Definitions for AUO-K190X framebuffer drivers
- *
- * Copyright (C) 2012 Heiko Stuebner <[e-mail]>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
- */
-
-#ifndef _LINUX_VIDEO_AUO_K190XFB_H_
-#define _LINUX_VIDEO_AUO_K190XFB_H_
-
-/* Controller standby command needs a param */
-#define AUOK190X_QUIRK_STANDBYPARAM	(1 << 0)
-
-/* Controller standby is completely broken */
-#define AUOK190X_QUIRK_STANDBYBROKEN	(1 << 1)
-
-/*
- * Resolutions for the displays
- */
-#define AUOK190X_RESOLUTION_800_600		0
-#define AUOK190X_RESOLUTION_1024_768		1
-#define AUOK190X_RESOLUTION_600_800		4
-#define AUOK190X_RESOLUTION_768_1024		5
-
-/*
- * struct used by auok190x. board specific stuff comes from *board
- */
-struct auok190xfb_par {
-	struct fb_info *info;
-	struct auok190x_board *board;
-
-	struct regulator *regulator;
-
-	struct mutex io_lock;
-	struct delayed_work work;
-	wait_queue_head_t waitq;
-	int resolution;
-	int rotation;
-	int consecutive_threshold;
-	int update_cnt;
-
-	/* panel and controller informations */
-	int epd_type;
-	int panel_size_int;
-	int panel_size_float;
-	int panel_model;
-	int tcon_version;
-	int lut_version;
-
-	/* individual controller callbacks */
-	void (*update_partial)(struct auok190xfb_par *par, u16 y1, u16 y2);
-	void (*update_all)(struct auok190xfb_par *par);
-	bool (*need_refresh)(struct auok190xfb_par *par);
-	void (*init)(struct auok190xfb_par *par);
-	void (*recover)(struct auok190xfb_par *par);
-
-	int update_mode; /* mode to use for updates */
-	int last_mode; /* update mode last used */
-	int flash;
-
-	/* power management */
-	int autosuspend_delay;
-	bool standby;
-	bool manual_standby;
-};
-
-/**
- * Board specific platform-data
- * @init:		initialize the controller interface
- * @cleanup:		cleanup the controller interface
- * @wait_for_rdy:	wait until the controller is not busy anymore
- * @set_ctl:		change an interface control
- * @set_hdb:		write a value to the data register
- * @get_hdb:		read a value from the data register
- * @setup_irq:		method to setup the irq handling on the busy gpio
- * @gpio_nsleep:	sleep gpio
- * @gpio_nrst:		reset gpio
- * @gpio_nbusy:		busy gpio
- * @resolution:		one of the AUOK190X_RESOLUTION constants
- * @rotation:		rotation of the framebuffer
- * @quirks:		controller quirks to honor
- * @fps:		frames per second for defio
- */
-struct auok190x_board {
-	int (*init)(struct auok190xfb_par *);
-	void (*cleanup)(struct auok190xfb_par *);
-	int (*wait_for_rdy)(struct auok190xfb_par *);
-
-	void (*set_ctl)(struct auok190xfb_par *, unsigned char, u8);
-	void (*set_hdb)(struct auok190xfb_par *, u16);
-	u16 (*get_hdb)(struct auok190xfb_par *);
-
-	int (*setup_irq)(struct fb_info *);
-
-	int gpio_nsleep;
-	int gpio_nrst;
-	int gpio_nbusy;
-
-	int resolution;
-	int quirks;
-	int fps;
-};
-
-#endif

include/video/sh_mobile_lcdc.h

···
 #define __ASM_SH_MOBILE_LCDC_H__
 
 #include <linux/fb.h>
-#include <video/sh_mobile_meram.h>
 
 /* Register definitions */
 #define _LDDCKR			0x410
···
 	struct sh_mobile_lcdc_panel_cfg panel_cfg;
 	struct sh_mobile_lcdc_bl_info bl_info;
 	struct sh_mobile_lcdc_sys_bus_cfg sys_bus_cfg; /* only for SYSn I/F */
-	const struct sh_mobile_meram_cfg *meram_cfg;
 
 	struct platform_device *tx_dev;	/* HDMI/DSI transmitter device */
 };
···
 	int clock_source;
 	struct sh_mobile_lcdc_chan_cfg ch[2];
 	struct sh_mobile_lcdc_overlay_cfg overlays[4];
-	struct sh_mobile_meram_info *meram_dev;
 };
 
 #endif /* __ASM_SH_MOBILE_LCDC_H__ */

include/video/sh_mobile_meram.h

···
-/* SPDX-License-Identifier: GPL-2.0 */
-#ifndef __VIDEO_SH_MOBILE_MERAM_H__
-#define __VIDEO_SH_MOBILE_MERAM_H__
-
-/* For sh_mobile_meram_info.addr_mode */
-enum {
-	SH_MOBILE_MERAM_MODE0 = 0,
-	SH_MOBILE_MERAM_MODE1
-};
-
-enum {
-	SH_MOBILE_MERAM_PF_NV = 0,
-	SH_MOBILE_MERAM_PF_RGB,
-	SH_MOBILE_MERAM_PF_NV24
-};
-
-
-struct sh_mobile_meram_priv;
-
-/*
- * struct sh_mobile_meram_info - MERAM platform data
- * @reserved_icbs: Bitmask of reserved ICBs (for instance used through UIO)
- */
-struct sh_mobile_meram_info {
-	int				addr_mode;
-	u32				reserved_icbs;
-	struct sh_mobile_meram_priv	*priv;
-	struct platform_device		*pdev;
-};
-
-/* icb config */
-struct sh_mobile_meram_icb_cfg {
-	unsigned int meram_size;	/* MERAM Buffer Size to use */
-};
-
-struct sh_mobile_meram_cfg {
-	struct sh_mobile_meram_icb_cfg icb[2];
-};
-
-#if defined(CONFIG_FB_SH_MOBILE_MERAM) || \
-    defined(CONFIG_FB_SH_MOBILE_MERAM_MODULE)
-unsigned long sh_mobile_meram_alloc(struct sh_mobile_meram_info *meram_dev,
-				    size_t size);
-void sh_mobile_meram_free(struct sh_mobile_meram_info *meram_dev,
-			  unsigned long mem, size_t size);
-void *sh_mobile_meram_cache_alloc(struct sh_mobile_meram_info *dev,
-				  const struct sh_mobile_meram_cfg *cfg,
-				  unsigned int xres, unsigned int yres,
-				  unsigned int pixelformat,
-				  unsigned int *pitch);
-void sh_mobile_meram_cache_free(struct sh_mobile_meram_info *dev, void *data);
-void sh_mobile_meram_cache_update(struct sh_mobile_meram_info *dev, void *data,
-				  unsigned long base_addr_y,
-				  unsigned long base_addr_c,
-				  unsigned long *icb_addr_y,
-				  unsigned long *icb_addr_c);
-#else
-static inline unsigned long
-sh_mobile_meram_alloc(struct sh_mobile_meram_info *meram_dev, size_t size)
-{
-	return 0;
-}
-
-static inline void
-sh_mobile_meram_free(struct sh_mobile_meram_info *meram_dev,
-		     unsigned long mem, size_t size)
-{
-}
-
-static inline void *
-sh_mobile_meram_cache_alloc(struct sh_mobile_meram_info *dev,
-			    const struct sh_mobile_meram_cfg *cfg,
-			    unsigned int xres, unsigned int yres,
-			    unsigned int pixelformat,
-			    unsigned int *pitch)
-{
-	return ERR_PTR(-ENODEV);
-}
-
-static inline void
-sh_mobile_meram_cache_free(struct sh_mobile_meram_info *dev, void *data)
-{
-}
-
-static inline void
-sh_mobile_meram_cache_update(struct sh_mobile_meram_info *dev, void *data,
-			     unsigned long base_addr_y,
-			     unsigned long base_addr_c,
-			     unsigned long *icb_addr_y,
-			     unsigned long *icb_addr_c)
-{
-}
-#endif
-
-#endif /* __VIDEO_SH_MOBILE_MERAM_H__  */