tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
1#ifndef _LXFB_H_
2#define _LXFB_H_
3
4#include <linux/fb.h>
5
6#define GP_REG_COUNT (0x7c / 4)
7#define DC_REG_COUNT (0xf0 / 4)
8#define VP_REG_COUNT (0x158 / 8)
9#define FP_REG_COUNT (0x60 / 8)
10
11#define DC_PAL_COUNT 0x104
12#define DC_HFILT_COUNT 0x100
13#define DC_VFILT_COUNT 0x100
14#define VP_COEFF_SIZE 0x1000
15
16#define OUTPUT_CRT 0x01
17#define OUTPUT_PANEL 0x02
18
19struct lxfb_par {
20 int output;
21
22 void __iomem *gp_regs;
23 void __iomem *dc_regs;
24 void __iomem *vp_regs;
25#ifdef CONFIG_PM
26 int powered_down;
27
28 /* register state, for power mgmt functionality */
29 struct {
30 uint64_t padsel;
31 uint64_t dotpll;
32 uint64_t dfglcfg;
33 uint64_t dcspare;
34 } msr;
35
36 uint32_t gp[GP_REG_COUNT];
37 uint32_t dc[DC_REG_COUNT];
38 uint64_t vp[VP_REG_COUNT];
39 uint64_t fp[FP_REG_COUNT];
40
41 uint32_t pal[DC_PAL_COUNT];
42 uint32_t hcoeff[DC_HFILT_COUNT * 2];
43 uint32_t vcoeff[DC_VFILT_COUNT];
44 uint32_t vp_coeff[VP_COEFF_SIZE / 4];
45#endif
46};
47
48static inline unsigned int lx_get_pitch(unsigned int xres, int bpp)
49{
50 return (((xres * (bpp >> 3)) + 7) & ~7);
51}
52
53void lx_set_mode(struct fb_info *);
54unsigned int lx_framebuffer_size(void);
55int lx_blank_display(struct fb_info *, int);
56void lx_set_palette_reg(struct fb_info *, unsigned int, unsigned int,
57 unsigned int, unsigned int);
58
59#ifdef CONFIG_PM
60int lx_powerdown(struct fb_info *info);
61int lx_powerup(struct fb_info *info);
62#endif
63
64
65/* Graphics Processor registers (table 6-29 from the data book) */
66enum gp_registers {
67 GP_DST_OFFSET = 0,
68 GP_SRC_OFFSET,
69 GP_STRIDE,
70 GP_WID_HEIGHT,
71
72 GP_SRC_COLOR_FG,
73 GP_SRC_COLOR_BG,
74 GP_PAT_COLOR_0,
75 GP_PAT_COLOR_1,
76
77 GP_PAT_COLOR_2,
78 GP_PAT_COLOR_3,
79 GP_PAT_COLOR_4,
80 GP_PAT_COLOR_5,
81
82 GP_PAT_DATA_0,
83 GP_PAT_DATA_1,
84 GP_RASTER_MODE,
85 GP_VECTOR_MODE,
86
87 GP_BLT_MODE,
88 GP_BLT_STATUS,
89 GP_HST_SRC,
90 GP_BASE_OFFSET,
91
92 GP_CMD_TOP,
93 GP_CMD_BOT,
94 GP_CMD_READ,
95 GP_CMD_WRITE,
96
97 GP_CH3_OFFSET,
98 GP_CH3_MODE_STR,
99 GP_CH3_WIDHI,
100 GP_CH3_HSRC,
101
102 GP_LUT_INDEX,
103 GP_LUT_DATA,
104 GP_INT_CNTRL, /* 0x78 */
105};
106
107#define GP_BLT_STATUS_CE (1 << 4) /* cmd buf empty */
108#define GP_BLT_STATUS_PB (1 << 0) /* primative busy */
109
110
111/* Display Controller registers (table 6-47 from the data book) */
112enum dc_registers {
113 DC_UNLOCK = 0,
114 DC_GENERAL_CFG,
115 DC_DISPLAY_CFG,
116 DC_ARB_CFG,
117
118 DC_FB_ST_OFFSET,
119 DC_CB_ST_OFFSET,
120 DC_CURS_ST_OFFSET,
121 DC_RSVD_0,
122
123 DC_VID_Y_ST_OFFSET,
124 DC_VID_U_ST_OFFSET,
125 DC_VID_V_ST_OFFSET,
126 DC_DV_TOP,
127
128 DC_LINE_SIZE,
129 DC_GFX_PITCH,
130 DC_VID_YUV_PITCH,
131 DC_RSVD_1,
132
133 DC_H_ACTIVE_TIMING,
134 DC_H_BLANK_TIMING,
135 DC_H_SYNC_TIMING,
136 DC_RSVD_2,
137
138 DC_V_ACTIVE_TIMING,
139 DC_V_BLANK_TIMING,
140 DC_V_SYNC_TIMING,
141 DC_FB_ACTIVE,
142
143 DC_CURSOR_X,
144 DC_CURSOR_Y,
145 DC_RSVD_3,
146 DC_LINE_CNT,
147
148 DC_PAL_ADDRESS,
149 DC_PAL_DATA,
150 DC_DFIFO_DIAG,
151 DC_CFIFO_DIAG,
152
153 DC_VID_DS_DELTA,
154 DC_GLIU0_MEM_OFFSET,
155 DC_DV_CTL,
156 DC_DV_ACCESS,
157
158 DC_GFX_SCALE,
159 DC_IRQ_FILT_CTL,
160 DC_FILT_COEFF1,
161 DC_FILT_COEFF2,
162
163 DC_VBI_EVEN_CTL,
164 DC_VBI_ODD_CTL,
165 DC_VBI_HOR,
166 DC_VBI_LN_ODD,
167
168 DC_VBI_LN_EVEN,
169 DC_VBI_PITCH,
170 DC_CLR_KEY,
171 DC_CLR_KEY_MASK,
172
173 DC_CLR_KEY_X,
174 DC_CLR_KEY_Y,
175 DC_IRQ,
176 DC_RSVD_4,
177
178 DC_RSVD_5,
179 DC_GENLK_CTL,
180 DC_VID_EVEN_Y_ST_OFFSET,
181 DC_VID_EVEN_U_ST_OFFSET,
182
183 DC_VID_EVEN_V_ST_OFFSET,
184 DC_V_ACTIVE_EVEN_TIMING,
185 DC_V_BLANK_EVEN_TIMING,
186 DC_V_SYNC_EVEN_TIMING, /* 0xec */
187};
188
189#define DC_UNLOCK_LOCK 0x00000000
190#define DC_UNLOCK_UNLOCK 0x00004758 /* magic value */
191
192#define DC_GENERAL_CFG_FDTY (1 << 17)
193#define DC_GENERAL_CFG_DFHPEL_SHIFT (12)
194#define DC_GENERAL_CFG_DFHPSL_SHIFT (8)
195#define DC_GENERAL_CFG_VGAE (1 << 7)
196#define DC_GENERAL_CFG_DECE (1 << 6)
197#define DC_GENERAL_CFG_CMPE (1 << 5)
198#define DC_GENERAL_CFG_VIDE (1 << 3)
199#define DC_GENERAL_CFG_DFLE (1 << 0)
200
201#define DC_DISPLAY_CFG_VISL (1 << 27)
202#define DC_DISPLAY_CFG_PALB (1 << 25)
203#define DC_DISPLAY_CFG_DCEN (1 << 24)
204#define DC_DISPLAY_CFG_DISP_MODE_24BPP (1 << 9)
205#define DC_DISPLAY_CFG_DISP_MODE_16BPP (1 << 8)
206#define DC_DISPLAY_CFG_DISP_MODE_8BPP (0)
207#define DC_DISPLAY_CFG_TRUP (1 << 6)
208#define DC_DISPLAY_CFG_VDEN (1 << 4)
209#define DC_DISPLAY_CFG_GDEN (1 << 3)
210#define DC_DISPLAY_CFG_TGEN (1 << 0)
211
212#define DC_DV_TOP_DV_TOP_EN (1 << 0)
213
214#define DC_DV_CTL_DV_LINE_SIZE ((1 << 10) | (1 << 11))
215#define DC_DV_CTL_DV_LINE_SIZE_1K (0)
216#define DC_DV_CTL_DV_LINE_SIZE_2K (1 << 10)
217#define DC_DV_CTL_DV_LINE_SIZE_4K (1 << 11)
218#define DC_DV_CTL_DV_LINE_SIZE_8K ((1 << 10) | (1 << 11))
219#define DC_DV_CTL_CLEAR_DV_RAM (1 << 0)
220
221#define DC_IRQ_FILT_CTL_H_FILT_SEL (1 << 10)
222
223#define DC_CLR_KEY_CLR_KEY_EN (1 << 24)
224
225#define DC_IRQ_VIP_VSYNC_IRQ_STATUS (1 << 21) /* undocumented? */
226#define DC_IRQ_STATUS (1 << 20) /* undocumented? */
227#define DC_IRQ_VIP_VSYNC_LOSS_IRQ_MASK (1 << 1)
228#define DC_IRQ_MASK (1 << 0)
229
230#define DC_GENLK_CTL_FLICK_SEL_MASK (0x0F << 28)
231#define DC_GENLK_CTL_ALPHA_FLICK_EN (1 << 25)
232#define DC_GENLK_CTL_FLICK_EN (1 << 24)
233#define DC_GENLK_CTL_GENLK_EN (1 << 18)
234
235
236/*
237 * Video Processor registers (table 6-71).
238 * There is space for 64 bit values, but we never use more than the
239 * lower 32 bits. The actual register save/restore code only bothers
240 * to restore those 32 bits.
241 */
242enum vp_registers {
243 VP_VCFG = 0,
244 VP_DCFG,
245
246 VP_VX,
247 VP_VY,
248
249 VP_SCL,
250 VP_VCK,
251
252 VP_VCM,
253 VP_PAR,
254
255 VP_PDR,
256 VP_SLR,
257
258 VP_MISC,
259 VP_CCS,
260
261 VP_VYS,
262 VP_VXS,
263
264 VP_RSVD_0,
265 VP_VDC,
266
267 VP_RSVD_1,
268 VP_CRC,
269
270 VP_CRC32,
271 VP_VDE,
272
273 VP_CCK,
274 VP_CCM,
275
276 VP_CC1,
277 VP_CC2,
278
279 VP_A1X,
280 VP_A1Y,
281
282 VP_A1C,
283 VP_A1T,
284
285 VP_A2X,
286 VP_A2Y,
287
288 VP_A2C,
289 VP_A2T,
290
291 VP_A3X,
292 VP_A3Y,
293
294 VP_A3C,
295 VP_A3T,
296
297 VP_VRR,
298 VP_AWT,
299
300 VP_VTM,
301 VP_VYE,
302
303 VP_A1YE,
304 VP_A2YE,
305
306 VP_A3YE, /* 0x150 */
307
308 VP_VCR = 0x1000, /* 0x1000 - 0x1fff */
309};
310
311#define VP_VCFG_VID_EN (1 << 0)
312
313#define VP_DCFG_GV_GAM (1 << 21)
314#define VP_DCFG_PWR_SEQ_DELAY ((1 << 17) | (1 << 18) | (1 << 19))
315#define VP_DCFG_PWR_SEQ_DELAY_DEFAULT (1 << 19) /* undocumented */
316#define VP_DCFG_CRT_SYNC_SKW ((1 << 14) | (1 << 15) | (1 << 16))
317#define VP_DCFG_CRT_SYNC_SKW_DEFAULT (1 << 16)
318#define VP_DCFG_CRT_VSYNC_POL (1 << 9)
319#define VP_DCFG_CRT_HSYNC_POL (1 << 8)
320#define VP_DCFG_DAC_BL_EN (1 << 3)
321#define VP_DCFG_VSYNC_EN (1 << 2)
322#define VP_DCFG_HSYNC_EN (1 << 1)
323#define VP_DCFG_CRT_EN (1 << 0)
324
325#define VP_MISC_APWRDN (1 << 11)
326#define VP_MISC_DACPWRDN (1 << 10)
327#define VP_MISC_BYP_BOTH (1 << 0)
328
329
330/*
331 * Flat Panel registers (table 6-71).
332 * Also 64 bit registers; see above note about 32-bit handling.
333 */
334
335/* we're actually in the VP register space, starting at address 0x400 */
336#define VP_FP_START 0x400
337
338enum fp_registers {
339 FP_PT1 = 0,
340 FP_PT2,
341
342 FP_PM,
343 FP_DFC,
344
345 FP_RSVD_0,
346 FP_RSVD_1,
347
348 FP_RSVD_2,
349 FP_RSVD_3,
350
351 FP_RSVD_4,
352 FP_DCA,
353
354 FP_DMD,
355 FP_CRC, /* 0x458 */
356};
357
358#define FP_PT2_SCRC (1 << 27) /* shfclk free */
359
360#define FP_PM_P (1 << 24) /* panel power ctl */
361#define FP_PM_PANEL_PWR_UP (1 << 3) /* r/o */
362#define FP_PM_PANEL_PWR_DOWN (1 << 2) /* r/o */
363#define FP_PM_PANEL_OFF (1 << 1) /* r/o */
364#define FP_PM_PANEL_ON (1 << 0) /* r/o */
365
366#define FP_DFC_BC ((1 << 4) | (1 << 5) | (1 << 6))
367
368
369/* register access functions */
370
371static inline uint32_t read_gp(struct lxfb_par *par, int reg)
372{
373 return readl(par->gp_regs + 4*reg);
374}
375
376static inline void write_gp(struct lxfb_par *par, int reg, uint32_t val)
377{
378 writel(val, par->gp_regs + 4*reg);
379}
380
381static inline uint32_t read_dc(struct lxfb_par *par, int reg)
382{
383 return readl(par->dc_regs + 4*reg);
384}
385
386static inline void write_dc(struct lxfb_par *par, int reg, uint32_t val)
387{
388 writel(val, par->dc_regs + 4*reg);
389}
390
391static inline uint32_t read_vp(struct lxfb_par *par, int reg)
392{
393 return readl(par->vp_regs + 8*reg);
394}
395
396static inline void write_vp(struct lxfb_par *par, int reg, uint32_t val)
397{
398 writel(val, par->vp_regs + 8*reg);
399}
400
401static inline uint32_t read_fp(struct lxfb_par *par, int reg)
402{
403 return readl(par->vp_regs + 8*reg + VP_FP_START);
404}
405
406static inline void write_fp(struct lxfb_par *par, int reg, uint32_t val)
407{
408 writel(val, par->vp_regs + 8*reg + VP_FP_START);
409}
410
411
412/* MSRs are defined in asm/geode.h; their bitfields are here */
413
414#define MSR_GLCP_DOTPLL_LOCK (1 << 25) /* r/o */
415#define MSR_GLCP_DOTPLL_HALFPIX (1 << 24)
416#define MSR_GLCP_DOTPLL_BYPASS (1 << 15)
417#define MSR_GLCP_DOTPLL_DOTRESET (1 << 0)
418
419/* note: this is actually the VP's GLD_MSR_CONFIG */
420#define MSR_LX_GLD_MSR_CONFIG_FMT ((1 << 3) | (1 << 4) | (1 << 5))
421#define MSR_LX_GLD_MSR_CONFIG_FMT_FP (1 << 3)
422#define MSR_LX_GLD_MSR_CONFIG_FMT_CRT (0)
423#define MSR_LX_GLD_MSR_CONFIG_FPC (1 << 15) /* FP *and* CRT */
424
425#define MSR_LX_MSR_PADSEL_TFT_SEL_LOW 0xDFFFFFFF /* ??? */
426#define MSR_LX_MSR_PADSEL_TFT_SEL_HIGH 0x0000003F /* ??? */
427
428#define MSR_LX_SPARE_MSR_DIS_CFIFO_HGO (1 << 11) /* undocumented */
429#define MSR_LX_SPARE_MSR_VFIFO_ARB_SEL (1 << 10) /* undocumented */
430#define MSR_LX_SPARE_MSR_WM_LPEN_OVRD (1 << 9) /* undocumented */
431#define MSR_LX_SPARE_MSR_LOAD_WM_LPEN_M (1 << 8) /* undocumented */
432#define MSR_LX_SPARE_MSR_DIS_INIT_V_PRI (1 << 7) /* undocumented */
433#define MSR_LX_SPARE_MSR_DIS_VIFO_WM (1 << 6)
434#define MSR_LX_SPARE_MSR_DIS_CWD_CHECK (1 << 5) /* undocumented */
435#define MSR_LX_SPARE_MSR_PIX8_PAN_FIX (1 << 4) /* undocumented */
436#define MSR_LX_SPARE_MSR_FIRST_REQ_MASK (1 << 1) /* undocumented */
437
438#endif