[linux-block.git] / drivers / staging / go7007 / saa7134-go7007.c

/*
 * Copyright (C) 2005-2006 Micronas USA Inc.
 *
 * 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.
 *
 * 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., 59 Temple Place - Suite 330, Boston MA 02111-1307, USA.
 */

#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/init.h>
#include <linux/spinlock.h>
#include <linux/wait.h>
#include <linux/list.h>
#include <linux/slab.h>
#include <linux/time.h>
#include <linux/mm.h>
#include <linux/usb.h>
#include <linux/i2c.h>
#include <asm/byteorder.h>
#include <media/v4l2-common.h>

#include "saa7134-reg.h"
#include "saa7134.h"
#include "go7007-priv.h"

#define GO7007_HPI_DEBUG

enum hpi_address {
	HPI_ADDR_VIDEO_BUFFER = 0xe4,
	HPI_ADDR_INIT_BUFFER = 0xea,
	HPI_ADDR_INTR_RET_VALUE = 0xee,
	HPI_ADDR_INTR_RET_DATA = 0xec,
	HPI_ADDR_INTR_STATUS = 0xf4,
	HPI_ADDR_INTR_WR_PARAM = 0xf6,
	HPI_ADDR_INTR_WR_INDEX = 0xf8,
};

enum gpio_command {
	GPIO_COMMAND_RESET = 0x00, /* 000b */
	GPIO_COMMAND_REQ1  = 0x04, /* 001b */
	GPIO_COMMAND_WRITE = 0x20, /* 010b */
	GPIO_COMMAND_REQ2  = 0x24, /* 011b */
	GPIO_COMMAND_READ  = 0x80, /* 100b */
	GPIO_COMMAND_VIDEO = 0x84, /* 101b */
	GPIO_COMMAND_IDLE  = 0xA0, /* 110b */
	GPIO_COMMAND_ADDR  = 0xA4, /* 111b */
};

struct saa7134_go7007 {
	struct saa7134_dev *dev;
	u8 *top;
	u8 *bottom;
	dma_addr_t top_dma;
	dma_addr_t bottom_dma;
};

static struct go7007_board_info board_voyager = {
	.firmware	 = "go7007tv.bin",
	.flags		 = 0,
	.sensor_flags	 = GO7007_SENSOR_656 |
				GO7007_SENSOR_VALID_ENABLE |
				GO7007_SENSOR_TV |
				GO7007_SENSOR_VBI,
	.audio_flags	= GO7007_AUDIO_I2S_MODE_1 |
				GO7007_AUDIO_WORD_16,
	.audio_rate	 = 48000,
	.audio_bclk_div	 = 8,
	.audio_main_div	 = 2,
	.hpi_buffer_cap  = 7,
	.num_inputs	 = 1,
	.inputs 	 = {
		{
			.name		= "SAA7134",
		},
	},
};

/********************* Driver for GPIO HPI interface *********************/

static int gpio_write(struct saa7134_dev *dev, u8 addr, u16 data)
{
	saa_writeb(SAA7134_GPIO_GPMODE0, 0xff);

	/* Write HPI address */
	saa_writeb(SAA7134_GPIO_GPSTATUS0, addr);
	saa_writeb(SAA7134_GPIO_GPSTATUS2, GPIO_COMMAND_ADDR);
	saa_writeb(SAA7134_GPIO_GPSTATUS2, GPIO_COMMAND_IDLE);

	/* Write low byte */
	saa_writeb(SAA7134_GPIO_GPSTATUS0, data & 0xff);
	saa_writeb(SAA7134_GPIO_GPSTATUS2, GPIO_COMMAND_WRITE);
	saa_writeb(SAA7134_GPIO_GPSTATUS2, GPIO_COMMAND_IDLE);

	/* Write high byte */
	saa_writeb(SAA7134_GPIO_GPSTATUS0, data >> 8);
	saa_writeb(SAA7134_GPIO_GPSTATUS2, GPIO_COMMAND_WRITE);
	saa_writeb(SAA7134_GPIO_GPSTATUS2, GPIO_COMMAND_IDLE);

	return 0;
}

static int gpio_read(struct saa7134_dev *dev, u8 addr, u16 *data)
{
	saa_writeb(SAA7134_GPIO_GPMODE0, 0xff);

	/* Write HPI address */
	saa_writeb(SAA7134_GPIO_GPSTATUS0, addr);
	saa_writeb(SAA7134_GPIO_GPSTATUS2, GPIO_COMMAND_ADDR);
	saa_writeb(SAA7134_GPIO_GPSTATUS2, GPIO_COMMAND_IDLE);

	saa_writeb(SAA7134_GPIO_GPMODE0, 0x00);

	/* Read low byte */
	saa_writeb(SAA7134_GPIO_GPSTATUS2, GPIO_COMMAND_READ);
	saa_clearb(SAA7134_GPIO_GPMODE3, SAA7134_GPIO_GPRESCAN);
	saa_setb(SAA7134_GPIO_GPMODE3, SAA7134_GPIO_GPRESCAN);
	*data = saa_readb(SAA7134_GPIO_GPSTATUS0);
	saa_writeb(SAA7134_GPIO_GPSTATUS2, GPIO_COMMAND_IDLE);

	/* Read high byte */
	saa_writeb(SAA7134_GPIO_GPSTATUS2, GPIO_COMMAND_READ);
	saa_clearb(SAA7134_GPIO_GPMODE3, SAA7134_GPIO_GPRESCAN);
	saa_setb(SAA7134_GPIO_GPMODE3, SAA7134_GPIO_GPRESCAN);
	*data |= saa_readb(SAA7134_GPIO_GPSTATUS0) << 8;
	saa_writeb(SAA7134_GPIO_GPSTATUS2, GPIO_COMMAND_IDLE);

	return 0;
}

static int saa7134_go7007_interface_reset(struct go7007 *go)
{
	struct saa7134_go7007 *saa = go->hpi_context;
	struct saa7134_dev *dev = saa->dev;
	u32 status;
	u16 intr_val, intr_data;
	int count = 20;

	saa_clearb(SAA7134_TS_PARALLEL, 0x80); /* Disable TS interface */
	saa_writeb(SAA7134_GPIO_GPMODE2, 0xa4);
	saa_writeb(SAA7134_GPIO_GPMODE0, 0xff);

	saa_writeb(SAA7134_GPIO_GPSTATUS2, GPIO_COMMAND_REQ1);
	saa_writeb(SAA7134_GPIO_GPSTATUS2, GPIO_COMMAND_RESET);
	msleep(1);
	saa_writeb(SAA7134_GPIO_GPSTATUS2, GPIO_COMMAND_REQ1);
	saa_writeb(SAA7134_GPIO_GPSTATUS2, GPIO_COMMAND_REQ2);
	msleep(10);

	saa_clearb(SAA7134_GPIO_GPMODE3, SAA7134_GPIO_GPRESCAN);
	saa_setb(SAA7134_GPIO_GPMODE3, SAA7134_GPIO_GPRESCAN);

	status = saa_readb(SAA7134_GPIO_GPSTATUS2);
	/*printk(KERN_DEBUG "status is %s\n", status & 0x40 ? "OK" : "not OK"); */

	/* enter command mode...(?) */
	saa_writeb(SAA7134_GPIO_GPSTATUS2, GPIO_COMMAND_REQ1);
	saa_writeb(SAA7134_GPIO_GPSTATUS2, GPIO_COMMAND_REQ2);

	do {
		saa_clearb(SAA7134_GPIO_GPMODE3, SAA7134_GPIO_GPRESCAN);
		saa_setb(SAA7134_GPIO_GPMODE3, SAA7134_GPIO_GPRESCAN);
		status = saa_readb(SAA7134_GPIO_GPSTATUS2);
		/*printk(KERN_INFO "gpio is %08x\n", saa_readl(SAA7134_GPIO_GPSTATUS0 >> 2)); */
	} while (--count > 0);

	/* Wait for an interrupt to indicate successful hardware reset */
	if (go7007_read_interrupt(go, &intr_val, &intr_data) < 0 ||
			(intr_val & ~0x1) != 0x55aa) {
		printk(KERN_ERR
			"saa7134-go7007: unable to reset the GO7007\n");
		return -1;
	}
	return 0;
}

static int saa7134_go7007_write_interrupt(struct go7007 *go, int addr, int data)
{
	struct saa7134_go7007 *saa = go->hpi_context;
	struct saa7134_dev *dev = saa->dev;
	int i;
	u16 status_reg;

#ifdef GO7007_HPI_DEBUG
	printk(KERN_DEBUG
		"saa7134-go7007: WriteInterrupt: %04x %04x\n", addr, data);
#endif

	for (i = 0; i < 100; ++i) {
		gpio_read(dev, HPI_ADDR_INTR_STATUS, &status_reg);
		if (!(status_reg & 0x0010))
			break;
		msleep(10);
	}
	if (i == 100) {
		printk(KERN_ERR
			"saa7134-go7007: device is hung, status reg = 0x%04x\n",
			status_reg);
		return -1;
	}
	gpio_write(dev, HPI_ADDR_INTR_WR_PARAM, data);
	gpio_write(dev, HPI_ADDR_INTR_WR_INDEX, addr);

	return 0;
}

static int saa7134_go7007_read_interrupt(struct go7007 *go)
{
	struct saa7134_go7007 *saa = go->hpi_context;
	struct saa7134_dev *dev = saa->dev;

	/* XXX we need to wait if there is no interrupt available */
	go->interrupt_available = 1;
	gpio_read(dev, HPI_ADDR_INTR_RET_VALUE, &go->interrupt_value);
	gpio_read(dev, HPI_ADDR_INTR_RET_DATA, &go->interrupt_data);
#ifdef GO7007_HPI_DEBUG
	printk(KERN_DEBUG "saa7134-go7007: ReadInterrupt: %04x %04x\n",
			go->interrupt_value, go->interrupt_data);
#endif
	return 0;
}

static void saa7134_go7007_irq_ts_done(struct saa7134_dev *dev,
						unsigned long status)
{
	struct go7007 *go = video_get_drvdata(dev->empress_dev);
	struct saa7134_go7007 *saa = go->hpi_context;

	if (!go->streaming)
		return;
	if (0 != (status & 0x000f0000))
		printk(KERN_DEBUG "saa7134-go7007: irq: lost %ld\n",
				(status >> 16) & 0x0f);
	if (status & 0x100000) {
		dma_sync_single(&dev->pci->dev,
				saa->bottom_dma, PAGE_SIZE, DMA_FROM_DEVICE);
		go7007_parse_video_stream(go, saa->bottom, PAGE_SIZE);
		saa_writel(SAA7134_RS_BA2(5), cpu_to_le32(saa->bottom_dma));
	} else {
		dma_sync_single(&dev->pci->dev,
				saa->top_dma, PAGE_SIZE, DMA_FROM_DEVICE);
		go7007_parse_video_stream(go, saa->top, PAGE_SIZE);
		saa_writel(SAA7134_RS_BA1(5), cpu_to_le32(saa->top_dma));
	}
}

static int saa7134_go7007_stream_start(struct go7007 *go)
{
	struct saa7134_go7007 *saa = go->hpi_context;
	struct saa7134_dev *dev = saa->dev;

	saa->top_dma = dma_map_page(&dev->pci->dev, virt_to_page(saa->top),
			0, PAGE_SIZE, DMA_FROM_DEVICE);
	if (!saa->top_dma)
		return -ENOMEM;
	saa->bottom_dma = dma_map_page(&dev->pci->dev,
			virt_to_page(saa->bottom),
			0, PAGE_SIZE, DMA_FROM_DEVICE);
	if (!saa->bottom_dma) {
		dma_unmap_page(&dev->pci->dev, saa->top_dma, PAGE_SIZE,
				DMA_FROM_DEVICE);
		return -ENOMEM;
	}

	saa_writel(SAA7134_VIDEO_PORT_CTRL0 >> 2, 0xA300B000);
	saa_writel(SAA7134_VIDEO_PORT_CTRL4 >> 2, 0x40000200);

	/* Set HPI interface for video */
	saa_writeb(SAA7134_GPIO_GPMODE0, 0xff);
	saa_writeb(SAA7134_GPIO_GPSTATUS0, HPI_ADDR_VIDEO_BUFFER);
	saa_writeb(SAA7134_GPIO_GPSTATUS2, GPIO_COMMAND_ADDR);
	saa_writeb(SAA7134_GPIO_GPMODE0, 0x00);

	/* Enable TS interface */
	saa_writeb(SAA7134_TS_PARALLEL, 0xe6);

	/* Reset TS interface */
	saa_setb(SAA7134_TS_SERIAL1, 0x01);
	saa_clearb(SAA7134_TS_SERIAL1, 0x01);

	/* Set up transfer block size */
	saa_writeb(SAA7134_TS_PARALLEL_SERIAL, 128 - 1);
	saa_writeb(SAA7134_TS_DMA0, (PAGE_SIZE >> 7) - 1);
	saa_writeb(SAA7134_TS_DMA1, 0);
	saa_writeb(SAA7134_TS_DMA2, 0);

	/* Enable video streaming mode */
	saa_writeb(SAA7134_GPIO_GPSTATUS2, GPIO_COMMAND_VIDEO);

	saa_writel(SAA7134_RS_BA1(5), cpu_to_le32(saa->top_dma));
	saa_writel(SAA7134_RS_BA2(5), cpu_to_le32(saa->bottom_dma));
	saa_writel(SAA7134_RS_PITCH(5), 128);
	saa_writel(SAA7134_RS_CONTROL(5), SAA7134_RS_CONTROL_BURST_MAX);

	/* Enable TS FIFO */
	saa_setl(SAA7134_MAIN_CTRL, SAA7134_MAIN_CTRL_TE5);

	/* Enable DMA IRQ */
	saa_setl(SAA7134_IRQ1,
			SAA7134_IRQ1_INTE_RA2_1 | SAA7134_IRQ1_INTE_RA2_0);

	return 0;
}

static int saa7134_go7007_stream_stop(struct go7007 *go)
{
	struct saa7134_go7007 *saa = go->hpi_context;
	struct saa7134_dev *dev;

	if (!saa)
		return -EINVAL;
	dev = saa->dev;
	if (!dev)
		return -EINVAL;

	/* Shut down TS FIFO */
	saa_clearl(SAA7134_MAIN_CTRL, SAA7134_MAIN_CTRL_TE5);

	/* Disable DMA IRQ */
	saa_clearl(SAA7134_IRQ1,
			SAA7134_IRQ1_INTE_RA2_1 | SAA7134_IRQ1_INTE_RA2_0);

	/* Disable TS interface */
	saa_clearb(SAA7134_TS_PARALLEL, 0x80);

	dma_unmap_page(&dev->pci->dev, saa->top_dma, PAGE_SIZE,
			DMA_FROM_DEVICE);
	dma_unmap_page(&dev->pci->dev, saa->bottom_dma, PAGE_SIZE,
			DMA_FROM_DEVICE);

	return 0;
}

static int saa7134_go7007_send_firmware(struct go7007 *go, u8 *data, int len)
{
	struct saa7134_go7007 *saa = go->hpi_context;
	struct saa7134_dev *dev = saa->dev;
	u16 status_reg;
	int i;

#ifdef GO7007_HPI_DEBUG
	printk(KERN_DEBUG "saa7134-go7007: DownloadBuffer "
			"sending %d bytes\n", len);
#endif

	while (len > 0) {
		i = len > 64 ? 64 : len;
		saa_writeb(SAA7134_GPIO_GPMODE0, 0xff);
		saa_writeb(SAA7134_GPIO_GPSTATUS0, HPI_ADDR_INIT_BUFFER);
		saa_writeb(SAA7134_GPIO_GPSTATUS2, GPIO_COMMAND_ADDR);
		saa_writeb(SAA7134_GPIO_GPSTATUS2, GPIO_COMMAND_IDLE);
		while (i-- > 0) {
			saa_writeb(SAA7134_GPIO_GPSTATUS0, *data);
			saa_writeb(SAA7134_GPIO_GPSTATUS2, GPIO_COMMAND_WRITE);
			saa_writeb(SAA7134_GPIO_GPSTATUS2, GPIO_COMMAND_IDLE);
			++data;
			--len;
		}
		for (i = 0; i < 100; ++i) {
			gpio_read(dev, HPI_ADDR_INTR_STATUS, &status_reg);
			if (!(status_reg & 0x0002))
				break;
		}
		if (i == 100) {
			printk(KERN_ERR "saa7134-go7007: device is hung, "
					"status reg = 0x%04x\n", status_reg);
			return -1;
		}
	}
	return 0;
}

static int saa7134_go7007_send_command(struct go7007 *go, unsigned int cmd,
					void *arg)
{
	struct saa7134_go7007 *saa = go->hpi_context;
	struct saa7134_dev *dev = saa->dev;

	switch (cmd) {
	case VIDIOC_S_STD:
	{
		v4l2_std_id *std = arg;
		return saa7134_s_std_internal(dev, NULL, std);
	}
	case VIDIOC_G_STD:
	{
		v4l2_std_id *std = arg;
		*std = dev->tvnorm->id;
		return 0;
	}
	case VIDIOC_QUERYCTRL:
	{
		struct v4l2_queryctrl *ctrl = arg;
		if (V4L2_CTRL_ID2CLASS(ctrl->id) == V4L2_CTRL_CLASS_USER)
			return saa7134_queryctrl(NULL, NULL, ctrl);
	}
	case VIDIOC_G_CTRL:
	{
		struct v4l2_control *ctrl = arg;
		if (V4L2_CTRL_ID2CLASS(ctrl->id) == V4L2_CTRL_CLASS_USER)
			return saa7134_g_ctrl_internal(dev, NULL, ctrl);
	}
	case VIDIOC_S_CTRL:
	{
		struct v4l2_control *ctrl = arg;
		if (V4L2_CTRL_ID2CLASS(ctrl->id) == V4L2_CTRL_CLASS_USER)
			return saa7134_s_ctrl_internal(dev, NULL, ctrl);
	}
	}
	return -EINVAL;

}

static struct go7007_hpi_ops saa7134_go7007_hpi_ops = {
	.interface_reset	= saa7134_go7007_interface_reset,
	.write_interrupt	= saa7134_go7007_write_interrupt,
	.read_interrupt		= saa7134_go7007_read_interrupt,
	.stream_start		= saa7134_go7007_stream_start,
	.stream_stop		= saa7134_go7007_stream_stop,
	.send_firmware		= saa7134_go7007_send_firmware,
	.send_command		= saa7134_go7007_send_command,
};

/********************* Add/remove functions *********************/

static int saa7134_go7007_init(struct saa7134_dev *dev)
{
	struct go7007 *go;
	struct saa7134_go7007 *saa;

	printk(KERN_DEBUG "saa7134-go7007: probing new SAA713X board\n");

	saa = kmalloc(sizeof(struct saa7134_go7007), GFP_KERNEL);
	if (saa == NULL)
		return -ENOMEM;
	memset(saa, 0, sizeof(struct saa7134_go7007));

	/* Allocate a couple pages for receiving the compressed stream */
	saa->top = (u8 *)get_zeroed_page(GFP_KERNEL);
	if (!saa->top)
		goto allocfail;
	saa->bottom = (u8 *)get_zeroed_page(GFP_KERNEL);
	if (!saa->bottom)
		goto allocfail;

	go = go7007_alloc(&board_voyager, &dev->pci->dev);
	if (go == NULL)
		goto allocfail;
	go->board_id = GO7007_BOARDID_PCI_VOYAGER;
	strncpy(go->name, saa7134_boards[dev->board].name, sizeof(go->name));
	go->hpi_ops = &saa7134_go7007_hpi_ops;
	go->hpi_context = saa;
	saa->dev = dev;

	/* Boot the GO7007 */
	if (go7007_boot_encoder(go, go->board_info->flags &
					GO7007_BOARD_USE_ONBOARD_I2C) < 0)
		goto initfail;

	/* Do any final GO7007 initialization, then register the
	 * V4L2 and ALSA interfaces */
	if (go7007_register_encoder(go) < 0)
		goto initfail;
	dev->empress_dev = go->video_dev;
	video_set_drvdata(dev->empress_dev, go);

	go->status = STATUS_ONLINE;
	return 0;

initfail:
	go->status = STATUS_SHUTDOWN;
	return 0;

allocfail:
	if (saa->top)
		free_page((unsigned long)saa->top);
	if (saa->bottom)
		free_page((unsigned long)saa->bottom);
	kfree(saa);
	return -ENOMEM;
}

static int saa7134_go7007_fini(struct saa7134_dev *dev)
{
	struct go7007 *go;
	struct saa7134_go7007 *saa;

	if (NULL == dev->empress_dev)
		return 0;

	go = video_get_drvdata(dev->empress_dev);
	saa = go->hpi_context;
	go->status = STATUS_SHUTDOWN;
	free_page((unsigned long)saa->top);
	free_page((unsigned long)saa->bottom);
	kfree(saa);
	go7007_remove(go);
	dev->empress_dev = NULL;

	return 0;
}

static struct saa7134_mpeg_ops saa7134_go7007_ops = {
	.type          = SAA7134_MPEG_GO7007,
	.init          = saa7134_go7007_init,
	.fini          = saa7134_go7007_fini,
	.irq_ts_done   = saa7134_go7007_irq_ts_done,
};

static int __init saa7134_go7007_mod_init(void)
{
	return saa7134_ts_register(&saa7134_go7007_ops);
}

static void __exit saa7134_go7007_mod_cleanup(void)
{
	saa7134_ts_unregister(&saa7134_go7007_ops);
}

module_init(saa7134_go7007_mod_init);
module_exit(saa7134_go7007_mod_cleanup);

MODULE_LICENSE("GPL v2");
Commit	Line	Data
866b8695 GKH	1	/*
	2	* Copyright (C) 2005-2006 Micronas USA Inc.
	3	*
	4	* This program is free software; you can redistribute it and/or modify
	5	* it under the terms of the GNU General Public License (Version 2) as
	6	* published by the Free Software Foundation.
	7	*
	8	* This program is distributed in the hope that it will be useful,
	9	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	10	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	11	* GNU General Public License for more details.
	12	*
	13	* You should have received a copy of the GNU General Public License
	14	* along with this program; if not, write to the Free Software Foundation,
	15	* Inc., 59 Temple Place - Suite 330, Boston MA 02111-1307, USA.
	16	*/
	17
	18	#include <linux/module.h>
	19	#include <linux/kernel.h>
	20	#include <linux/init.h>
	21	#include <linux/spinlock.h>
	22	#include <linux/wait.h>
	23	#include <linux/list.h>
	24	#include <linux/slab.h>
	25	#include <linux/time.h>
	26	#include <linux/mm.h>
	27	#include <linux/usb.h>
	28	#include <linux/i2c.h>
	29	#include <asm/byteorder.h>
d73f822c	30	#include <media/v4l2-common.h>
866b8695 GKH	31
	32	#include "saa7134-reg.h"
	33	#include "saa7134.h"
	34	#include "go7007-priv.h"
	35
	36	#define GO7007_HPI_DEBUG
	37
	38	enum hpi_address {
	39	HPI_ADDR_VIDEO_BUFFER = 0xe4,
	40	HPI_ADDR_INIT_BUFFER = 0xea,
	41	HPI_ADDR_INTR_RET_VALUE = 0xee,
	42	HPI_ADDR_INTR_RET_DATA = 0xec,
	43	HPI_ADDR_INTR_STATUS = 0xf4,
	44	HPI_ADDR_INTR_WR_PARAM = 0xf6,
	45	HPI_ADDR_INTR_WR_INDEX = 0xf8,
	46	};
	47
	48	enum gpio_command {
	49	GPIO_COMMAND_RESET = 0x00, /* 000b */
	50	GPIO_COMMAND_REQ1 = 0x04, /* 001b */
	51	GPIO_COMMAND_WRITE = 0x20, /* 010b */
	52	GPIO_COMMAND_REQ2 = 0x24, /* 011b */
	53	GPIO_COMMAND_READ = 0x80, /* 100b */
	54	GPIO_COMMAND_VIDEO = 0x84, /* 101b */
	55	GPIO_COMMAND_IDLE = 0xA0, /* 110b */
	56	GPIO_COMMAND_ADDR = 0xA4, /* 111b */
	57	};
	58
	59	struct saa7134_go7007 {
	60	struct saa7134_dev *dev;
	61	u8 *top;
	62	u8 *bottom;
	63	dma_addr_t top_dma;
	64	dma_addr_t bottom_dma;
	65	};
	66
	67	static struct go7007_board_info board_voyager = {
	68	.firmware = "go7007tv.bin",
	69	.flags = 0,
	70	.sensor_flags = GO7007_SENSOR_656 \|
	71	GO7007_SENSOR_VALID_ENABLE \|
	72	GO7007_SENSOR_TV \|
	73	GO7007_SENSOR_VBI,
	74	.audio_flags = GO7007_AUDIO_I2S_MODE_1 \|
	75	GO7007_AUDIO_WORD_16,
	76	.audio_rate = 48000,
	77	.audio_bclk_div = 8,
	78	.audio_main_div = 2,
	79	.hpi_buffer_cap = 7,
	80	.num_inputs = 1,
	81	.inputs = {
	82	{
	83	.name = "SAA7134",
	84	},
	85	},
	86	};
	87
	88	/******************* Driver for GPIO HPI interface *******************/
	89
	90	static int gpio_write(struct saa7134_dev *dev, u8 addr, u16 data)
	91	{
	92	saa_writeb(SAA7134_GPIO_GPMODE0, 0xff);
	93
	94	/* Write HPI address */
95	saa_writeb(SAA7134_GPIO_GPSTATUS0, addr);
96	saa_writeb(SAA7134_GPIO_GPSTATUS2, GPIO_COMMAND_ADDR);
97	saa_writeb(SAA7134_GPIO_GPSTATUS2, GPIO_COMMAND_IDLE);
98
99	/* Write low byte */
100	saa_writeb(SAA7134_GPIO_GPSTATUS0, data & 0xff);
101	saa_writeb(SAA7134_GPIO_GPSTATUS2, GPIO_COMMAND_WRITE);
102	saa_writeb(SAA7134_GPIO_GPSTATUS2, GPIO_COMMAND_IDLE);
103
104	/* Write high byte */
105	saa_writeb(SAA7134_GPIO_GPSTATUS0, data >> 8);
106	saa_writeb(SAA7134_GPIO_GPSTATUS2, GPIO_COMMAND_WRITE);
107	saa_writeb(SAA7134_GPIO_GPSTATUS2, GPIO_COMMAND_IDLE);
108
109	return 0;
110	}
111
112	static int gpio_read(struct saa7134_dev dev, u8 addr, u16 data)
113	{
114	saa_writeb(SAA7134_GPIO_GPMODE0, 0xff);
115
116	/* Write HPI address */
117	saa_writeb(SAA7134_GPIO_GPSTATUS0, addr);
118	saa_writeb(SAA7134_GPIO_GPSTATUS2, GPIO_COMMAND_ADDR);
119	saa_writeb(SAA7134_GPIO_GPSTATUS2, GPIO_COMMAND_IDLE);
120
121	saa_writeb(SAA7134_GPIO_GPMODE0, 0x00);
122
123	/* Read low byte */
124	saa_writeb(SAA7134_GPIO_GPSTATUS2, GPIO_COMMAND_READ);
125	saa_clearb(SAA7134_GPIO_GPMODE3, SAA7134_GPIO_GPRESCAN);
126	saa_setb(SAA7134_GPIO_GPMODE3, SAA7134_GPIO_GPRESCAN);
127	*data = saa_readb(SAA7134_GPIO_GPSTATUS0);
128	saa_writeb(SAA7134_GPIO_GPSTATUS2, GPIO_COMMAND_IDLE);
129
130	/* Read high byte */
131	saa_writeb(SAA7134_GPIO_GPSTATUS2, GPIO_COMMAND_READ);
132	saa_clearb(SAA7134_GPIO_GPMODE3, SAA7134_GPIO_GPRESCAN);
133	saa_setb(SAA7134_GPIO_GPMODE3, SAA7134_GPIO_GPRESCAN);
134	*data \|= saa_readb(SAA7134_GPIO_GPSTATUS0) << 8;
135	saa_writeb(SAA7134_GPIO_GPSTATUS2, GPIO_COMMAND_IDLE);
136
137	return 0;
138	}
139
140	static int saa7134_go7007_interface_reset(struct go7007 *go)
141	{
142	struct saa7134_go7007 *saa = go->hpi_context;
143	struct saa7134_dev *dev = saa->dev;
144	u32 status;
145	u16 intr_val, intr_data;
146	int count = 20;
147
148	saa_clearb(SAA7134_TS_PARALLEL, 0x80); /* Disable TS interface */
149	saa_writeb(SAA7134_GPIO_GPMODE2, 0xa4);
150	saa_writeb(SAA7134_GPIO_GPMODE0, 0xff);
151
152	saa_writeb(SAA7134_GPIO_GPSTATUS2, GPIO_COMMAND_REQ1);
153	saa_writeb(SAA7134_GPIO_GPSTATUS2, GPIO_COMMAND_RESET);
154	msleep(1);
155	saa_writeb(SAA7134_GPIO_GPSTATUS2, GPIO_COMMAND_REQ1);
156	saa_writeb(SAA7134_GPIO_GPSTATUS2, GPIO_COMMAND_REQ2);
157	msleep(10);
158
159	saa_clearb(SAA7134_GPIO_GPMODE3, SAA7134_GPIO_GPRESCAN);
160	saa_setb(SAA7134_GPIO_GPMODE3, SAA7134_GPIO_GPRESCAN);
161
162	status = saa_readb(SAA7134_GPIO_GPSTATUS2);
163	/printk(KERN_DEBUG "status is %s\n", status & 0x40 ? "OK" : "not OK"); /
164
165	/* enter command mode...(?) */
166	saa_writeb(SAA7134_GPIO_GPSTATUS2, GPIO_COMMAND_REQ1);
167	saa_writeb(SAA7134_GPIO_GPSTATUS2, GPIO_COMMAND_REQ2);
168
169	do {
170	saa_clearb(SAA7134_GPIO_GPMODE3, SAA7134_GPIO_GPRESCAN);
171	saa_setb(SAA7134_GPIO_GPMODE3, SAA7134_GPIO_GPRESCAN);
172	status = saa_readb(SAA7134_GPIO_GPSTATUS2);
173	/printk(KERN_INFO "gpio is %08x\n", saa_readl(SAA7134_GPIO_GPSTATUS0 >> 2)); /
174	} while (--count > 0);
175
176	/* Wait for an interrupt to indicate successful hardware reset */
177	if (go7007_read_interrupt(go, &intr_val, &intr_data) < 0 \|\|
178	(intr_val & ~0x1) != 0x55aa) {
179	printk(KERN_ERR
180	"saa7134-go7007: unable to reset the GO7007\n");
181	return -1;
182	}
183	return 0;
184	}
185
186	static int saa7134_go7007_write_interrupt(struct go7007 *go, int addr, int data)
187	{
188	struct saa7134_go7007 *saa = go->hpi_context;
189	struct saa7134_dev *dev = saa->dev;
190	int i;
191	u16 status_reg;
192
193	#ifdef GO7007_HPI_DEBUG
194	printk(KERN_DEBUG
195	"saa7134-go7007: WriteInterrupt: %04x %04x\n", addr, data);
196	#endif
197
198	for (i = 0; i < 100; ++i) {
199	gpio_read(dev, HPI_ADDR_INTR_STATUS, &status_reg);
200	if (!(status_reg & 0x0010))
201	break;
202	msleep(10);
203	}
204	if (i == 100) {
205	printk(KERN_ERR
206	"saa7134-go7007: device is hung, status reg = 0x%04x\n",
207	status_reg);
208	return -1;
209	}
210	gpio_write(dev, HPI_ADDR_INTR_WR_PARAM, data);
211	gpio_write(dev, HPI_ADDR_INTR_WR_INDEX, addr);
212
213	return 0;
214	}
215
216	static int saa7134_go7007_read_interrupt(struct go7007 *go)
217	{
218	struct saa7134_go7007 *saa = go->hpi_context;
219	struct saa7134_dev *dev = saa->dev;
220
221	/* XXX we need to wait if there is no interrupt available */
222	go->interrupt_available = 1;
223	gpio_read(dev, HPI_ADDR_INTR_RET_VALUE, &go->interrupt_value);
224	gpio_read(dev, HPI_ADDR_INTR_RET_DATA, &go->interrupt_data);
225	#ifdef GO7007_HPI_DEBUG
226	printk(KERN_DEBUG "saa7134-go7007: ReadInterrupt: %04x %04x\n",
227	go->interrupt_value, go->interrupt_data);
228	#endif
229	return 0;
230	}
231
232	static void saa7134_go7007_irq_ts_done(struct saa7134_dev *dev,
233	unsigned long status)
234	{
235	struct go7007 *go = video_get_drvdata(dev->empress_dev);
236	struct saa7134_go7007 *saa = go->hpi_context;
237
238	if (!go->streaming)
239	return;
240	if (0 != (status & 0x000f0000))
241	printk(KERN_DEBUG "saa7134-go7007: irq: lost %ld\n",
242	(status >> 16) & 0x0f);
243	if (status & 0x100000) {
244	dma_sync_single(&dev->pci->dev,
245	saa->bottom_dma, PAGE_SIZE, DMA_FROM_DEVICE);
246	go7007_parse_video_stream(go, saa->bottom, PAGE_SIZE);
247	saa_writel(SAA7134_RS_BA2(5), cpu_to_le32(saa->bottom_dma));
248	} else {
249	dma_sync_single(&dev->pci->dev,
250	saa->top_dma, PAGE_SIZE, DMA_FROM_DEVICE);
251	go7007_parse_video_stream(go, saa->top, PAGE_SIZE);
252	saa_writel(SAA7134_RS_BA1(5), cpu_to_le32(saa->top_dma));
253	}
254	}
255
256	static int saa7134_go7007_stream_start(struct go7007 *go)
257	{
258	struct saa7134_go7007 *saa = go->hpi_context;
259	struct saa7134_dev *dev = saa->dev;
260
261	saa->top_dma = dma_map_page(&dev->pci->dev, virt_to_page(saa->top),
262	0, PAGE_SIZE, DMA_FROM_DEVICE);
263	if (!saa->top_dma)
264	return -ENOMEM;
265	saa->bottom_dma = dma_map_page(&dev->pci->dev,
266	virt_to_page(saa->bottom),
267	0, PAGE_SIZE, DMA_FROM_DEVICE);
268	if (!saa->bottom_dma) {
269	dma_unmap_page(&dev->pci->dev, saa->top_dma, PAGE_SIZE,
270	DMA_FROM_DEVICE);
271	return -ENOMEM;
272	}
273
274	saa_writel(SAA7134_VIDEO_PORT_CTRL0 >> 2, 0xA300B000);
275	saa_writel(SAA7134_VIDEO_PORT_CTRL4 >> 2, 0x40000200);
276
277	/* Set HPI interface for video */
278	saa_writeb(SAA7134_GPIO_GPMODE0, 0xff);
279	saa_writeb(SAA7134_GPIO_GPSTATUS0, HPI_ADDR_VIDEO_BUFFER);
280	saa_writeb(SAA7134_GPIO_GPSTATUS2, GPIO_COMMAND_ADDR);
281	saa_writeb(SAA7134_GPIO_GPMODE0, 0x00);
282
283	/* Enable TS interface */
284	saa_writeb(SAA7134_TS_PARALLEL, 0xe6);
285
286	/* Reset TS interface */
287	saa_setb(SAA7134_TS_SERIAL1, 0x01);
288	saa_clearb(SAA7134_TS_SERIAL1, 0x01);
289
290	/* Set up transfer block size */
291	saa_writeb(SAA7134_TS_PARALLEL_SERIAL, 128 - 1);
292	saa_writeb(SAA7134_TS_DMA0, (PAGE_SIZE >> 7) - 1);
293	saa_writeb(SAA7134_TS_DMA1, 0);
294	saa_writeb(SAA7134_TS_DMA2, 0);
295
296	/* Enable video streaming mode */
297	saa_writeb(SAA7134_GPIO_GPSTATUS2, GPIO_COMMAND_VIDEO);
298
299	saa_writel(SAA7134_RS_BA1(5), cpu_to_le32(saa->top_dma));
300	saa_writel(SAA7134_RS_BA2(5), cpu_to_le32(saa->bottom_dma));
301	saa_writel(SAA7134_RS_PITCH(5), 128);
302	saa_writel(SAA7134_RS_CONTROL(5), SAA7134_RS_CONTROL_BURST_MAX);
303
304	/* Enable TS FIFO */
305	saa_setl(SAA7134_MAIN_CTRL, SAA7134_MAIN_CTRL_TE5);
306
307	/* Enable DMA IRQ */
308	saa_setl(SAA7134_IRQ1,
309	SAA7134_IRQ1_INTE_RA2_1 \| SAA7134_IRQ1_INTE_RA2_0);
310
311	return 0;
312	}
313
314	static int saa7134_go7007_stream_stop(struct go7007 *go)
315	{
316	struct saa7134_go7007 *saa = go->hpi_context;
d73f822c PE	317	struct saa7134_dev *dev;
	318
	319	if (!saa)
	320	return -EINVAL;
	321	dev = saa->dev;
	322	if (!dev)
	323	return -EINVAL;
866b8695 GKH	324
	325	/* Shut down TS FIFO */
	326	saa_clearl(SAA7134_MAIN_CTRL, SAA7134_MAIN_CTRL_TE5);
	327
	328	/* Disable DMA IRQ */
	329	saa_clearl(SAA7134_IRQ1,
	330	SAA7134_IRQ1_INTE_RA2_1 \| SAA7134_IRQ1_INTE_RA2_0);
	331
	332	/* Disable TS interface */
	333	saa_clearb(SAA7134_TS_PARALLEL, 0x80);
	334
	335	dma_unmap_page(&dev->pci->dev, saa->top_dma, PAGE_SIZE,
	336	DMA_FROM_DEVICE);
	337	dma_unmap_page(&dev->pci->dev, saa->bottom_dma, PAGE_SIZE,
	338	DMA_FROM_DEVICE);
	339
	340	return 0;
	341	}
	342
	343	static int saa7134_go7007_send_firmware(struct go7007 go, u8 data, int len)
	344	{
	345	struct saa7134_go7007 *saa = go->hpi_context;
	346	struct saa7134_dev *dev = saa->dev;
	347	u16 status_reg;
	348	int i;
	349
	350	#ifdef GO7007_HPI_DEBUG
	351	printk(KERN_DEBUG "saa7134-go7007: DownloadBuffer "
	352	"sending %d bytes\n", len);
	353	#endif
	354
	355	while (len > 0) {
	356	i = len > 64 ? 64 : len;
	357	saa_writeb(SAA7134_GPIO_GPMODE0, 0xff);
	358	saa_writeb(SAA7134_GPIO_GPSTATUS0, HPI_ADDR_INIT_BUFFER);
	359	saa_writeb(SAA7134_GPIO_GPSTATUS2, GPIO_COMMAND_ADDR);
	360	saa_writeb(SAA7134_GPIO_GPSTATUS2, GPIO_COMMAND_IDLE);
	361	while (i-- > 0) {
	362	saa_writeb(SAA7134_GPIO_GPSTATUS0, *data);
	363	saa_writeb(SAA7134_GPIO_GPSTATUS2, GPIO_COMMAND_WRITE);
	364	saa_writeb(SAA7134_GPIO_GPSTATUS2, GPIO_COMMAND_IDLE);
	365	++data;
	366	--len;
	367	}
	368	for (i = 0; i < 100; ++i) {
	369	gpio_read(dev, HPI_ADDR_INTR_STATUS, &status_reg);
	370	if (!(status_reg & 0x0002))
	371	break;
	372	}
	373	if (i == 100) {
	374	printk(KERN_ERR "saa7134-go7007: device is hung, "
	375	"status reg = 0x%04x\n", status_reg);
	376	return -1;
	377	}
	378	}
	379	return 0;
	380	}
	381
d73f822c PE	382	static int saa7134_go7007_send_command(struct go7007 *go, unsigned int cmd,
	383	void *arg)
	384	{
	385	struct saa7134_go7007 *saa = go->hpi_context;
	386	struct saa7134_dev *dev = saa->dev;
	387
	388	switch (cmd) {
	389	case VIDIOC_S_STD:
	390	{
	391	v4l2_std_id *std = arg;
	392	return saa7134_s_std_internal(dev, NULL, std);
	393	}
	394	case VIDIOC_G_STD:
	395	{
	396	v4l2_std_id *std = arg;
	397	*std = dev->tvnorm->id;
	398	return 0;
	399	}
	400	case VIDIOC_QUERYCTRL:
	401	{
	402	struct v4l2_queryctrl *ctrl = arg;
	403	if (V4L2_CTRL_ID2CLASS(ctrl->id) == V4L2_CTRL_CLASS_USER)
	404	return saa7134_queryctrl(NULL, NULL, ctrl);
	405	}
	406	case VIDIOC_G_CTRL:
	407	{
	408	struct v4l2_control *ctrl = arg;
	409	if (V4L2_CTRL_ID2CLASS(ctrl->id) == V4L2_CTRL_CLASS_USER)
	410	return saa7134_g_ctrl_internal(dev, NULL, ctrl);
	411	}
	412	case VIDIOC_S_CTRL:
	413	{
	414	struct v4l2_control *ctrl = arg;
	415	if (V4L2_CTRL_ID2CLASS(ctrl->id) == V4L2_CTRL_CLASS_USER)
	416	return saa7134_s_ctrl_internal(dev, NULL, ctrl);
	417	}
	418	}
	419	return -EINVAL;
	420
	421	}
	422
866b8695 GKH	423	static struct go7007_hpi_ops saa7134_go7007_hpi_ops = {
	424	.interface_reset = saa7134_go7007_interface_reset,
	425	.write_interrupt = saa7134_go7007_write_interrupt,
	426	.read_interrupt = saa7134_go7007_read_interrupt,
	427	.stream_start = saa7134_go7007_stream_start,
	428	.stream_stop = saa7134_go7007_stream_stop,
	429	.send_firmware = saa7134_go7007_send_firmware,
d73f822c	430	.send_command = saa7134_go7007_send_command,
866b8695 GKH	431	};
	432
	433	/******************* Add/remove functions *******************/
	434
	435	static int saa7134_go7007_init(struct saa7134_dev *dev)
	436	{
	437	struct go7007 *go;
	438	struct saa7134_go7007 *saa;
	439
	440	printk(KERN_DEBUG "saa7134-go7007: probing new SAA713X board\n");
	441
	442	saa = kmalloc(sizeof(struct saa7134_go7007), GFP_KERNEL);
	443	if (saa == NULL)
	444	return -ENOMEM;
	445	memset(saa, 0, sizeof(struct saa7134_go7007));
	446
	447	/* Allocate a couple pages for receiving the compressed stream */
	448	saa->top = (u8 *)get_zeroed_page(GFP_KERNEL);
	449	if (!saa->top)
	450	goto allocfail;
	451	saa->bottom = (u8 *)get_zeroed_page(GFP_KERNEL);
	452	if (!saa->bottom)
	453	goto allocfail;
	454
	455	go = go7007_alloc(&board_voyager, &dev->pci->dev);
	456	if (go == NULL)
	457	goto allocfail;
	458	go->board_id = GO7007_BOARDID_PCI_VOYAGER;
	459	strncpy(go->name, saa7134_boards[dev->board].name, sizeof(go->name));
	460	go->hpi_ops = &saa7134_go7007_hpi_ops;
	461	go->hpi_context = saa;
	462	saa->dev = dev;
	463
	464	/* Boot the GO7007 */
	465	if (go7007_boot_encoder(go, go->board_info->flags &
	466	GO7007_BOARD_USE_ONBOARD_I2C) < 0)
	467	goto initfail;
	468
	469	/* Do any final GO7007 initialization, then register the
	470	* V4L2 and ALSA interfaces */
	471	if (go7007_register_encoder(go) < 0)
	472	goto initfail;
	473	dev->empress_dev = go->video_dev;
	474	video_set_drvdata(dev->empress_dev, go);
	475
	476	go->status = STATUS_ONLINE;
	477	return 0;
	478
	479	initfail:
	480	go->status = STATUS_SHUTDOWN;
	481	return 0;
	482
	483	allocfail:
	484	if (saa->top)
	485	free_page((unsigned long)saa->top);
	486	if (saa->bottom)
	487	free_page((unsigned long)saa->bottom);
	488	kfree(saa);
	489	return -ENOMEM;
	490	}
	491
	492	static int saa7134_go7007_fini(struct saa7134_dev *dev)
	493	{
	494	struct go7007 *go;
495	struct saa7134_go7007 *saa;
496
497	if (NULL == dev->empress_dev)
498	return 0;
499
500	go = video_get_drvdata(dev->empress_dev);
501	saa = go->hpi_context;
502	go->status = STATUS_SHUTDOWN;
503	free_page((unsigned long)saa->top);
504	free_page((unsigned long)saa->bottom);
505	kfree(saa);
506	go7007_remove(go);
507	dev->empress_dev = NULL;
508
509	return 0;
510	}
511
512	static struct saa7134_mpeg_ops saa7134_go7007_ops = {
513	.type = SAA7134_MPEG_GO7007,
514	.init = saa7134_go7007_init,
515	.fini = saa7134_go7007_fini,
516	.irq_ts_done = saa7134_go7007_irq_ts_done,
517	};
518
519	static int __init saa7134_go7007_mod_init(void)
520	{
521	return saa7134_ts_register(&saa7134_go7007_ops);
522	}
523
524	static void __exit saa7134_go7007_mod_cleanup(void)
525	{
526	saa7134_ts_unregister(&saa7134_go7007_ops);
527	}
528
529	module_init(saa7134_go7007_mod_init);
530	module_exit(saa7134_go7007_mod_cleanup);
531
532	MODULE_LICENSE("GPL v2");