V4L/DVB (13794): [Mantis/VP-3028] Initial go at Serial interface implementation, add support for VP-3028

Signed-off-by: Manu Abraham <[e-mail]>
Signed-off-by: Mauro Carvalho Chehab <[e-mail]>

drivers/media/dvb/mantis/Makefile

···
 mantis-objs = 	mantis_core.o	\
+		mantis_uart.o	\
 		mantis_dma.o	\
 		mantis_pci.o	\
 		mantis_i2c.o	\
···
 		mantis_vp1041.o	\
 		mantis_vp2033.o	\
 		mantis_vp2040.o	\
+		mantis_vp3028.o	\
 		mantis_vp3030.o
 
 obj-$(CONFIG_DVB_MANTIS) += mantis.o

drivers/media/dvb/mantis/mantis_common.h

···
 #include <linux/kernel.h>
 #include <linux/pci.h>
 #include <linux/mutex.h>
+#include <linux/workqueue.h>
 
 #include "dvbdev.h"
 #include "dvb_demux.h"
···
 #include "dvb_net.h"
 #include <linux/i2c.h>
 #include "mantis_reg.h"
+#include "mantis_uart.h"
 
 #include "mantis_link.h"
 
···
 	char			*model_name;
 	char			*dev_type;
 	u32			ts_size;
+
+	enum mantis_baud	baud_rate;
+	enum mantis_parity	parity;
+	u32			bytes;
 };
 
 struct mantis_pci {
···
 	u32			gpif_status;
 
 	struct mantis_ca	*mantis_ca;
+
+	wait_queue_head_t	uart_wq;
+	struct work_struct	uart_work;
+	spinlock_t		uart_lock;
 };
 
 #define MANTIS_HIF_STATUS	(mantis->gpio_status)

drivers/media/dvb/mantis/mantis_core.c

···
 		dprintk(verbose, MANTIS_DEBUG, 1, "Mantis DVB init failed");
 		return err;
 	}
+	if ((err = mantis_uart_init(mantis)) < 0) {
+		dprintk(verbose, MANTIS_DEBUG, 1, "Mantis UART init failed");
+		return err;
+	}
 
 	return 0;
 }
···
 {
 	mantis_dma_stop(mantis);
 	dprintk(verbose, MANTIS_ERROR, 1, "DMA engine stopping");
+
+	mantis_uart_exit(mantis);
+	dprintk(verbose, MANTIS_ERROR, 1, "UART exit failed");
+
 	if (mantis_dma_exit(mantis) < 0)
 		dprintk(verbose, MANTIS_ERROR, 1, "DMA exit failed");
 	if (mantis_dvb_exit(mantis) < 0)

drivers/media/dvb/mantis/mantis_pci.c

···
 #include <linux/device.h>
 #include "mantis_common.h"
 #include "mantis_core.h"
+#include "mantis_uart.h"
 
 #include <asm/irq.h>
 #include <linux/signal.h>
···
 	}
 	if (stat & MANTIS_INT_IRQ1) {
 		dprintk(verbose, MANTIS_DEBUG, 0, "* INT IRQ-1 *");
+		schedule_work(&mantis->uart_work);
 	}
 	if (stat & MANTIS_INT_OCERR) {
 		dprintk(verbose, MANTIS_DEBUG, 0, "* INT OCERR *");

drivers/media/dvb/mantis/mantis_uart.c

···
+#include <linux/spinlock.h>
+#include "mantis_common.h"
+
+struct mantis_uart_params {
+	enum mantis_baud	baud_rate;
+	enum mantis_parity	parity;
+};
+
+#define UART_MAX_BUF			16
+
+int mantis_uart_read(struct mantis_pci *mantis, u8 *data)
+{
+	struct mantis_hwconfig *config = mantis->hwconfig;
+	u32 stat, i;
+	unsigned long flags;
+
+	/* get data */
+	for (i = 0; i < (config->bytes + 1); i++) {
+
+		if (stat & MANTIS_UART_RXFIFO_FULL) {
+			dprintk(verbose, MANTIS_ERROR, 1, "RX Fifo FULL");
+		}
+		data[i] = mmread(MANTIS_UART_RXD) & 0x3f;
+
+		stat = mmread(MANTIS_UART_STAT);
+
+		dprintk(verbose, MANTIS_DEBUG, 1, "Reading ... <%02x>", data[i] & 0x3f);
+
+		if (data[i] & (1 << 7)) {
+			dprintk(verbose, MANTIS_ERROR, 1, "UART framing error");
+			return -EINVAL;
+		}
+		if (data[i] & (1 << 6)) {
+			dprintk(verbose, MANTIS_ERROR, 1, "UART parity error");
+			return -EINVAL;
+		}
+	}
+
+	return 0;
+}
+
+static void mantis_uart_work(struct work_struct *work)
+{
+	struct mantis_pci *mantis = container_of(work, struct mantis_pci, uart_work);
+	struct mantis_hwconfig *config = mantis->hwconfig;
+	u8 buf[16];
+	int i;
+
+	dprintk(verbose, MANTIS_DEBUG, 1, "UART read");
+	mantis_uart_read(mantis, buf);
+
+	dprintk(verbose, MANTIS_DEBUG, 1, "UART: ");
+	for (i = 0; i < (config->bytes + 1); i++)
+		dprintk(verbose, MANTIS_DEBUG, 0, "<%02x> ", buf[i]);
+
+	dprintk(verbose, MANTIS_DEBUG, 0, "\n");
+}
+
+static int mantis_uart_setup(struct mantis_pci *mantis,
+			     struct mantis_uart_params *params)
+{
+	char* rates[] = { "B_9600", "B_19200", "B_38400", "B_57600", "B_115200" };
+	char* parity[] = { "NONE", "ODD", "EVEN" };
+
+	u32 reg;
+
+	dprintk(verbose, MANTIS_DEBUG, 1, "Set Parity <%s> Baud Rate <%s>",
+		parity[params->parity],
+		rates[params->baud_rate]);
+
+	mmwrite((mmread(MANTIS_UART_CTL) | (params->parity & 0x3)), MANTIS_UART_CTL);
+
+	reg = mmread(MANTIS_UART_BAUD);
+
+	switch (params->baud_rate) {
+	case MANTIS_BAUD_9600:
+		reg |= 0xd8;
+		break;
+	case MANTIS_BAUD_19200:
+		reg |= 0x6c;
+		break;
+	case MANTIS_BAUD_38400:
+		reg |= 0x36;
+		break;
+	case MANTIS_BAUD_57600:
+		reg |= 0x23;
+		break;
+	case MANTIS_BAUD_115200:
+		reg |= 0x11;
+		break;
+	default:
+		return -EINVAL;
+	}
+
+	mmwrite(reg, MANTIS_UART_BAUD);
+
+	return 0;
+}
+
+int mantis_uart_init(struct mantis_pci *mantis)
+{
+	struct mantis_hwconfig *config = mantis->hwconfig;
+	struct mantis_uart_params params;
+
+	dprintk(verbose, MANTIS_DEBUG, 1, "Initializing UART ..");
+	/* default parity: */
+	params.baud_rate = config->baud_rate;
+	params.parity = config->parity;
+
+	init_waitqueue_head(&mantis->uart_wq);
+	spin_lock_init(&mantis->uart_lock);
+
+	INIT_WORK(&mantis->uart_work, mantis_uart_work);
+
+	/* disable interrupt */
+	mmwrite(mmread(MANTIS_UART_CTL) & 0xffef, MANTIS_UART_CTL);
+
+	mantis_uart_setup(mantis, &params);
+
+	/* default 1 byte */
+	mmwrite((mmread(MANTIS_UART_BAUD) | (config->bytes << 8)), MANTIS_UART_BAUD);
+
+	/* flush buffer */
+	mmwrite((mmread(MANTIS_UART_CTL) | MANTIS_UART_RXFLUSH), MANTIS_UART_CTL);
+
+	/* enable interrupt */
+	mmwrite(mmread(MANTIS_INT_MASK) | 0x800, MANTIS_INT_MASK);
+	mmwrite(mmread(MANTIS_UART_CTL) | MANTIS_UART_RXINT, MANTIS_UART_CTL);
+
+	schedule_work(&mantis->uart_work);
+
+	return 0;
+}
+
+void mantis_uart_exit(struct mantis_pci *mantis)
+{
+	/* disable interrupt */
+	mmwrite(mmread(MANTIS_UART_CTL) & 0xffef, MANTIS_UART_CTL);
+}

drivers/media/dvb/mantis/mantis_uart.h

···
 #ifndef __MANTIS_UART_H
 #define __MANTIS_UART_H
 
+#define MANTIS_UART_CTL			0xe0
+#define MANTIS_UART_RXINT		(1 << 4)
+#define MANTIS_UART_RXFLUSH		(1 << 2)
+
+#define MANTIS_UART_RXD			0xe8
+#define MANTIS_UART_BAUD		0xec
+
+#define MANTIS_UART_STAT		0xf0
+#define MANTIS_UART_RXFIFO_DATA		(1 << 7)
+#define MANTIS_UART_RXFIFO_EMPTY	(1 << 6)
+#define MANTIS_UART_RXFIFO_FULL		(1 << 3)
+#define MANTIS_UART_FRAME_ERR		(1 << 2)
+#define MANTIS_UART_PARITY_ERR		(1 << 1)
+#define MANTIS_UART_RXTHRESH_INT	(1 << 0)
+
 enum mantis_baud {
 	MANTIS_BAUD_9600	= 0,
 	MANTIS_BAUD_19200,
···
 };
 
 enum mantis_parity {
-	MANTIS_PARITY_NONE	= 0,
+	MANTIS_PARITY_UNDEFINED	= 0,
 	MANTIS_PARITY_EVEN,
-	MANTIS_PARITY_ODD
+	MANTIS_PARITY_ODD,
+	MANTIS_PARITY_NONE
 };
+
+struct mantis_pci;
+
+extern int mantis_uart_init(struct mantis_pci *mantis);
+extern void mantis_uart_exit(struct mantis_pci *mantis);
 
 #endif // __MANTIS_UART_H

drivers/media/dvb/mantis/mantis_vp1033.c

···
 	.model_name		= MANTIS_MODEL_NAME,
 	.dev_type		= MANTIS_DEV_TYPE,
 	.ts_size		= MANTIS_TS_204,
+	.baud_rate		= MANTIS_BAUD_9600,
+	.parity			= MANTIS_PARITY_NONE,
+	.bytes			= 0,
 };
 
 int lgtdqcs001f_tuner_set(struct dvb_frontend *fe,

drivers/media/dvb/mantis/mantis_vp1034.c

···
 	.model_name	= MANTIS_MODEL_NAME,
 	.dev_type	= MANTIS_DEV_TYPE,
 	.ts_size	= MANTIS_TS_204,
+	.baud_rate	= MANTIS_BAUD_9600,
+	.parity		= MANTIS_PARITY_NONE,
+	.bytes		= 0,
 };
 
 int vp1034_set_voltage(struct dvb_frontend *fe, fe_sec_voltage_t voltage)

drivers/media/dvb/mantis/mantis_vp1041.c

···
 	.model_name	= MANTIS_MODEL_NAME,
 	.dev_type	= MANTIS_DEV_TYPE,
 	.ts_size	= MANTIS_TS_188,
+	.baud_rate	= MANTIS_BAUD_9600,
+	.parity		= MANTIS_PARITY_NONE,
+	.bytes		= 0,
 };
 
 static const struct stb0899_s1_reg vp1041_stb0899_s1_init_1[] = {

drivers/media/dvb/mantis/mantis_vp2033.c

···
 	.model_name	= MANTIS_MODEL_NAME,
 	.dev_type	= MANTIS_DEV_TYPE,
 	.ts_size	= MANTIS_TS_204,
+	.baud_rate	= MANTIS_BAUD_9600,
+	.parity		= MANTIS_PARITY_NONE,
+	.bytes		= 0,
 };
 
 struct tda1002x_config philips_cu1216_config = {

drivers/media/dvb/mantis/mantis_vp2040.c

···
 	.model_name	= MANTIS_MODEL_NAME,
 	.dev_type	= MANTIS_DEV_TYPE,
 	.ts_size	= MANTIS_TS_204,
+	.baud_rate	= MANTIS_BAUD_9600,
+	.parity		= MANTIS_PARITY_NONE,
+	.bytes		= 0,
 };
 
 struct tda10023_config tda10023_cu1216_config = {

drivers/media/dvb/mantis/mantis_vp3028.c

···
+/*
+	Mantis VP-3028 driver
+
+	Copyright (C) 2005, 2006 Manu Abraham ([e-mail])
+
+	This program is free software; you can redistribute it and/or modify
+	it under the terms of the GNU General Public License as published by
+	the Free Software Foundation; either version 2 of the License, or
+	(at your option) any later version.
+
+	This program is distributed in the hope that it will be useful,
+	but WITHOUT ANY WARRANTY; without even the implied warranty of
+	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+	GNU General Public License for more details.
+
+	You should have received a copy of the GNU General Public License
+	along with this program; if not, write to the Free Software
+	Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+*/
+
+#include "mantis_common.h"
+#include "mantis_vp3028.h"
+
+struct zl10353_config mantis_vp3028_config = {
+	.demod_address	= 0x0f,
+};
+
+#define MANTIS_MODEL_NAME	"VP-3028"
+#define MANTIS_DEV_TYPE		"DVB-T"
+
+struct mantis_hwconfig vp3028_mantis_config = {
+	.model_name	= MANTIS_MODEL_NAME,
+	.dev_type	= MANTIS_DEV_TYPE,
+	.ts_size	= MANTIS_TS_188,
+	.baud_rate	= MANTIS_BAUD_9600,
+	.parity		= MANTIS_PARITY_NONE,
+	.bytes		= 0,
+};

drivers/media/dvb/mantis/mantis_vp3028.h

···
+#ifndef __MANTIS_VP3028_H
+#define __MANTIS_VP3028_H
+
+#include "dvb_frontend.h"
+#include "mantis_common.h"
+#include "zl10353.h"
+
+#define MANTIS_VP_3028_DVB_T	0x0028
+
+extern struct zl10353_config mantis_vp3028_config;
+extern struct mantis_hwconfig vp3028_mantis_config;
+
+#endif /* __MANTIS_VP3028_H */

drivers/media/dvb/mantis/mantis_vp3030.c

···
 	.model_name	= MANTIS_MODEL_NAME,
 	.dev_type	= MANTIS_DEV_TYPE,
 	.ts_size	= MANTIS_TS_188,
+	.baud_rate	= MANTIS_BAUD_9600,
+	.parity		= MANTIS_PARITY_NONE,
+	.bytes		= 0,
 };
 
 int panasonic_en57h12d5_set_params(struct dvb_frontend *fe,