Commit 85609c1c authored by Muralidharan Karicheri's avatar Muralidharan Karicheri Committed by Kevin Hilman
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DaVinci: DM646x - platform changes for vpif capture and display drivers 



VPIF display changes (Chaithrika)

Add platform device and resource structures. Also define a platform specific
clock setup function that can be accessed by the driver to configure the clock
and CPLD.

VPIF caputure changes (Murali)

1) Modify vpif_subdev_info to add board_info, routing information and
   vpif interface configuration. Remove addr since it is part of
   board_info

2) Add code to setup channel mode and input decoder path for vpif
   capture driver

Also incorporated comments against version v0 of the patch series and
added a spinlock to protect writes to common registers

Tested on DM6467 on channel 0 using TVP514x. Following bootargs used
for drivers:

   vpif_capture.ch0_bufsize=829440 vpif_display.ch2_bufsize=829440

Signed-off-by: default avatarManjunath Hadli <mrh@ti.com>
Signed-off-by: default avatarBrijesh Jadav <brijesh.j@ti.com>
Signed-off-by: default avatarChaithrika U S <chaithrika@ti.com>
Reviewed-by: default avatarHans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: default avatarMuralidharan Karicheri <m-karicheri2@ti.com>
Signed-off-by: default avatarKevin Hilman <khilman@deeprootsystems.com>
parent 51e68e27

arch/arm/mach-davinci/board-dm646x-evm.c

+318 −1
Original line number Diff line number Diff line
@@ -34,6 +34,8 @@ 
#include <linux/i2c/pcf857x.h>

#include <linux/etherdevice.h>



#include <media/tvp514x.h>



#include <asm/setup.h>

#include <asm/mach-types.h>

#include <asm/mach/arch.h>
@@ -62,6 +64,30 @@ 
#define DM646X_EVM_PHY_MASK		(0x2)

#define DM646X_EVM_MDIO_FREQUENCY	(2200000) /* PHY bus frequency */



#define VIDCLKCTL_OFFSET	(DAVINCI_SYSTEM_MODULE_BASE + 0x38)

#define VSCLKDIS_OFFSET		(DAVINCI_SYSTEM_MODULE_BASE + 0x6c)

#define VCH2CLK_MASK		(BIT_MASK(10) | BIT_MASK(9) | BIT_MASK(8))

#define VCH2CLK_SYSCLK8		(BIT(9))

#define VCH2CLK_AUXCLK		(BIT(9) | BIT(8))

#define VCH3CLK_MASK		(BIT_MASK(14) | BIT_MASK(13) | BIT_MASK(12))

#define VCH3CLK_SYSCLK8		(BIT(13))

#define VCH3CLK_AUXCLK		(BIT(14) | BIT(13))



#define VIDCH2CLK		(BIT(10))

#define VIDCH3CLK		(BIT(11))

#define VIDCH1CLK		(BIT(4))

#define TVP7002_INPUT		(BIT(4))

#define TVP5147_INPUT		(~BIT(4))

#define VPIF_INPUT_ONE_CHANNEL	(BIT(5))

#define VPIF_INPUT_TWO_CHANNEL	(~BIT(5))

#define TVP5147_CH0		"tvp514x-0"

#define TVP5147_CH1		"tvp514x-1"



static void __iomem *vpif_vidclkctl_reg;

static void __iomem *vpif_vsclkdis_reg;

/* spin lock for updating above registers */

static spinlock_t vpif_reg_lock;



static struct davinci_uart_config uart_config __initdata = {

	.enabled_uarts = (1 << 0),

};
@@ -287,6 +313,40 @@ static struct snd_platform_data dm646x_evm_snd_data[] = { 
	},

};



static struct i2c_client *cpld_client;



static int cpld_video_probe(struct i2c_client *client,

			const struct i2c_device_id *id)

{

	cpld_client = client;

	return 0;

}



static int __devexit cpld_video_remove(struct i2c_client *client)

{

	cpld_client = NULL;

	return 0;

}



static const struct i2c_device_id cpld_video_id[] = {

	{ "cpld_video", 0 },

	{ }

};



static struct i2c_driver cpld_video_driver = {

	.driver = {

		.name	= "cpld_video",

	},

	.probe		= cpld_video_probe,

	.remove		= cpld_video_remove,

	.id_table	= cpld_video_id,

};



static void evm_init_cpld(void)

{

	i2c_add_driver(&cpld_video_driver);

}



static struct i2c_board_info __initdata i2c_info[] =  {

	{

		I2C_BOARD_INFO("24c256", 0x50),
@@ -301,7 +361,10 @@ static struct i2c_board_info __initdata i2c_info[] = { 
	},

	{

		I2C_BOARD_INFO("tlv320aic33", 0x18),

	}

	},

	{

		I2C_BOARD_INFO("cpld_video", 0x3b),

	},

};



static struct davinci_i2c_platform_data i2c_pdata = {
@@ -309,11 +372,265 @@ static struct davinci_i2c_platform_data i2c_pdata = { 
	.bus_delay      = 0 /* usec */,

};



static int set_vpif_clock(int mux_mode, int hd)

{

	unsigned long flags;

	unsigned int value;

	int val = 0;

	int err = 0;



	if (!vpif_vidclkctl_reg || !vpif_vsclkdis_reg || !cpld_client)

		return -ENXIO;



	/* disable the clock */

	spin_lock_irqsave(&vpif_reg_lock, flags);

	value = __raw_readl(vpif_vsclkdis_reg);

	value |= (VIDCH3CLK | VIDCH2CLK);

	__raw_writel(value, vpif_vsclkdis_reg);

	spin_unlock_irqrestore(&vpif_reg_lock, flags);



	val = i2c_smbus_read_byte(cpld_client);

	if (val < 0)

		return val;



	if (mux_mode == 1)

		val &= ~0x40;

	else

		val |= 0x40;



	err = i2c_smbus_write_byte(cpld_client, val);

	if (err)

		return err;



	value = __raw_readl(vpif_vidclkctl_reg);

	value &= ~(VCH2CLK_MASK);

	value &= ~(VCH3CLK_MASK);



	if (hd >= 1)

		value |= (VCH2CLK_SYSCLK8 | VCH3CLK_SYSCLK8);

	else

		value |= (VCH2CLK_AUXCLK | VCH3CLK_AUXCLK);



	__raw_writel(value, vpif_vidclkctl_reg);



	spin_lock_irqsave(&vpif_reg_lock, flags);

	value = __raw_readl(vpif_vsclkdis_reg);

	/* enable the clock */

	value &= ~(VIDCH3CLK | VIDCH2CLK);

	__raw_writel(value, vpif_vsclkdis_reg);

	spin_unlock_irqrestore(&vpif_reg_lock, flags);



	return 0;

}



static struct vpif_subdev_info dm646x_vpif_subdev[] = {

	{

		.name	= "adv7343",

		.board_info = {

			I2C_BOARD_INFO("adv7343", 0x2a),

		},

	},

	{

		.name	= "ths7303",

		.board_info = {

			I2C_BOARD_INFO("ths7303", 0x2c),

		},

	},

};



static const char *output[] = {

	"Composite",

	"Component",

	"S-Video",

};



static struct vpif_display_config dm646x_vpif_display_config = {

	.set_clock	= set_vpif_clock,

	.subdevinfo	= dm646x_vpif_subdev,

	.subdev_count	= ARRAY_SIZE(dm646x_vpif_subdev),

	.output		= output,

	.output_count	= ARRAY_SIZE(output),

	.card_name	= "DM646x EVM",

};



/**

 * setup_vpif_input_path()

 * @channel: channel id (0 - CH0, 1 - CH1)

 * @sub_dev_name: ptr sub device name

 *

 * This will set vpif input to capture data from tvp514x or

 * tvp7002.

 */

static int setup_vpif_input_path(int channel, const char *sub_dev_name)

{

	int err = 0;

	int val;



	/* for channel 1, we don't do anything */

	if (channel != 0)

		return 0;



	if (!cpld_client)

		return -ENXIO;



	val = i2c_smbus_read_byte(cpld_client);

	if (val < 0)

		return val;



	if (!strcmp(sub_dev_name, TVP5147_CH0) ||

	    !strcmp(sub_dev_name, TVP5147_CH1))

		val &= TVP5147_INPUT;

	else

		val |= TVP7002_INPUT;



	err = i2c_smbus_write_byte(cpld_client, val);

	if (err)

		return err;

	return 0;

}



/**

 * setup_vpif_input_channel_mode()

 * @mux_mode:  mux mode. 0 - 1 channel or (1) - 2 channel

 *

 * This will setup input mode to one channel (TVP7002) or 2 channel (TVP5147)

 */

static int setup_vpif_input_channel_mode(int mux_mode)

{

	unsigned long flags;

	int err = 0;

	int val;

	u32 value;



	if (!vpif_vsclkdis_reg || !cpld_client)

		return -ENXIO;



	val = i2c_smbus_read_byte(cpld_client);

	if (val < 0)

		return val;



	spin_lock_irqsave(&vpif_reg_lock, flags);

	value = __raw_readl(vpif_vsclkdis_reg);

	if (mux_mode) {

		val &= VPIF_INPUT_TWO_CHANNEL;

		value |= VIDCH1CLK;

	} else {

		val |= VPIF_INPUT_ONE_CHANNEL;

		value &= ~VIDCH1CLK;

	}

	__raw_writel(value, vpif_vsclkdis_reg);

	spin_unlock_irqrestore(&vpif_reg_lock, flags);



	err = i2c_smbus_write_byte(cpld_client, val);

	if (err)

		return err;



	return 0;

}



static struct tvp514x_platform_data tvp5146_pdata = {

	.clk_polarity = 0,

	.hs_polarity = 1,

	.vs_polarity = 1

};



#define TVP514X_STD_ALL (V4L2_STD_NTSC | V4L2_STD_PAL)



static struct vpif_subdev_info vpif_capture_sdev_info[] = {

	{

		.name	= TVP5147_CH0,

		.board_info = {

			I2C_BOARD_INFO("tvp5146", 0x5d),

			.platform_data = &tvp5146_pdata,

		},

		.input = INPUT_CVBS_VI2B,

		.output = OUTPUT_10BIT_422_EMBEDDED_SYNC,

		.can_route = 1,

		.vpif_if = {

			.if_type = VPIF_IF_BT656,

			.hd_pol = 1,

			.vd_pol = 1,

			.fid_pol = 0,

		},

	},

	{

		.name	= TVP5147_CH1,

		.board_info = {

			I2C_BOARD_INFO("tvp5146", 0x5c),

			.platform_data = &tvp5146_pdata,

		},

		.input = INPUT_SVIDEO_VI2C_VI1C,

		.output = OUTPUT_10BIT_422_EMBEDDED_SYNC,

		.can_route = 1,

		.vpif_if = {

			.if_type = VPIF_IF_BT656,

			.hd_pol = 1,

			.vd_pol = 1,

			.fid_pol = 0,

		},

	},

};



static const struct vpif_input dm6467_ch0_inputs[] = {

	{

		.input = {

			.index = 0,

			.name = "Composite",

			.type = V4L2_INPUT_TYPE_CAMERA,

			.std = TVP514X_STD_ALL,

		},

		.subdev_name = TVP5147_CH0,

	},

};



static const struct vpif_input dm6467_ch1_inputs[] = {

       {

		.input = {

			.index = 0,

			.name = "S-Video",

			.type = V4L2_INPUT_TYPE_CAMERA,

			.std = TVP514X_STD_ALL,

		},

		.subdev_name = TVP5147_CH1,

	},

};



static struct vpif_capture_config dm646x_vpif_capture_cfg = {

	.setup_input_path = setup_vpif_input_path,

	.setup_input_channel_mode = setup_vpif_input_channel_mode,

	.subdev_info = vpif_capture_sdev_info,

	.subdev_count = ARRAY_SIZE(vpif_capture_sdev_info),

	.chan_config[0] = {

		.inputs = dm6467_ch0_inputs,

		.input_count = ARRAY_SIZE(dm6467_ch0_inputs),

	},

	.chan_config[1] = {

		.inputs = dm6467_ch1_inputs,

		.input_count = ARRAY_SIZE(dm6467_ch1_inputs),

	},

};



static void __init evm_init_video(void)

{

	vpif_vidclkctl_reg = ioremap(VIDCLKCTL_OFFSET, 4);

	vpif_vsclkdis_reg = ioremap(VSCLKDIS_OFFSET, 4);

	if (!vpif_vidclkctl_reg || !vpif_vsclkdis_reg) {

		pr_err("Can't map VPIF VIDCLKCTL or VSCLKDIS registers\n");

		return;

	}

	spin_lock_init(&vpif_reg_lock);



	dm646x_setup_vpif(&dm646x_vpif_display_config,

			  &dm646x_vpif_capture_cfg);

}



static void __init evm_init_i2c(void)

{

	davinci_init_i2c(&i2c_pdata);

	i2c_add_driver(&dm6467evm_cpld_driver);

	i2c_register_board_info(1, i2c_info, ARRAY_SIZE(i2c_info));

	evm_init_cpld();

	evm_init_video();

}



static void __init davinci_map_io(void)

arch/arm/mach-davinci/dm646x.c

+104 −0
Original line number Diff line number Diff line
@@ -32,6 +32,15 @@ 
#include "clock.h"

#include "mux.h"



#define DAVINCI_VPIF_BASE       (0x01C12000)

#define VDD3P3V_PWDN_OFFSET	(0x48)

#define VSCLKDIS_OFFSET		(0x6C)



#define VDD3P3V_VID_MASK	(BIT_MASK(3) | BIT_MASK(2) | BIT_MASK(1) |\

					BIT_MASK(0))

#define VSCLKDIS_MASK		(BIT_MASK(11) | BIT_MASK(10) | BIT_MASK(9) |\

					BIT_MASK(8))



/*

 * Device specific clocks

 */
@@ -686,6 +695,75 @@ static struct platform_device dm646x_dit_device = { 
	.id	= -1,

};



static u64 vpif_dma_mask = DMA_BIT_MASK(32);



static struct resource vpif_resource[] = {

	{

		.start	= DAVINCI_VPIF_BASE,

		.end	= DAVINCI_VPIF_BASE + 0x03ff,

		.flags	= IORESOURCE_MEM,

	}

};



static struct platform_device vpif_dev = {

	.name		= "vpif",

	.id		= -1,

	.dev		= {

			.dma_mask 		= &vpif_dma_mask,

			.coherent_dma_mask	= DMA_BIT_MASK(32),

	},

	.resource	= vpif_resource,

	.num_resources	= ARRAY_SIZE(vpif_resource),

};



static struct resource vpif_display_resource[] = {

	{

		.start = IRQ_DM646X_VP_VERTINT2,

		.end   = IRQ_DM646X_VP_VERTINT2,

		.flags = IORESOURCE_IRQ,

	},

	{

		.start = IRQ_DM646X_VP_VERTINT3,

		.end   = IRQ_DM646X_VP_VERTINT3,

		.flags = IORESOURCE_IRQ,

	},

};



static struct platform_device vpif_display_dev = {

	.name		= "vpif_display",

	.id		= -1,

	.dev		= {

			.dma_mask 		= &vpif_dma_mask,

			.coherent_dma_mask	= DMA_BIT_MASK(32),

	},

	.resource	= vpif_display_resource,

	.num_resources	= ARRAY_SIZE(vpif_display_resource),

};



static struct resource vpif_capture_resource[] = {

	{

		.start = IRQ_DM646X_VP_VERTINT0,

		.end   = IRQ_DM646X_VP_VERTINT0,

		.flags = IORESOURCE_IRQ,

	},

	{

		.start = IRQ_DM646X_VP_VERTINT1,

		.end   = IRQ_DM646X_VP_VERTINT1,

		.flags = IORESOURCE_IRQ,

	},

};



static struct platform_device vpif_capture_dev = {

	.name		= "vpif_capture",

	.id		= -1,

	.dev		= {

			.dma_mask 		= &vpif_dma_mask,

			.coherent_dma_mask	= DMA_BIT_MASK(32),

	},

	.resource	= vpif_capture_resource,

	.num_resources	= ARRAY_SIZE(vpif_capture_resource),

};



/*----------------------------------------------------------------------*/



static struct map_desc dm646x_io_desc[] = {
@@ -814,6 +892,32 @@ void __init dm646x_init_mcasp1(struct snd_platform_data *pdata) 
	platform_device_register(&dm646x_dit_device);

}



void dm646x_setup_vpif(struct vpif_display_config *display_config,

		       struct vpif_capture_config *capture_config)

{

	unsigned int value;

	void __iomem *base = IO_ADDRESS(DAVINCI_SYSTEM_MODULE_BASE);



	value = __raw_readl(base + VSCLKDIS_OFFSET);

	value &= ~VSCLKDIS_MASK;

	__raw_writel(value, base + VSCLKDIS_OFFSET);



	value = __raw_readl(base + VDD3P3V_PWDN_OFFSET);

	value &= ~VDD3P3V_VID_MASK;

	__raw_writel(value, base + VDD3P3V_PWDN_OFFSET);



	davinci_cfg_reg(DM646X_STSOMUX_DISABLE);

	davinci_cfg_reg(DM646X_STSIMUX_DISABLE);

	davinci_cfg_reg(DM646X_PTSOMUX_DISABLE);

	davinci_cfg_reg(DM646X_PTSIMUX_DISABLE);



	vpif_display_dev.dev.platform_data = display_config;

	vpif_capture_dev.dev.platform_data = capture_config;

	platform_device_register(&vpif_dev);

	platform_device_register(&vpif_display_dev);

	platform_device_register(&vpif_capture_dev);

}



void __init dm646x_init(void)

{

	davinci_common_init(&davinci_soc_info_dm646x);

arch/arm/mach-davinci/include/mach/dm646x.h

+59 −0
Original line number Diff line number Diff line
@@ -14,6 +14,8 @@ 
#include <mach/hardware.h>

#include <mach/emac.h>

#include <mach/asp.h>

#include <linux/i2c.h>

#include <linux/videodev2.h>



#define DM646X_EMAC_BASE		(0x01C80000)

#define DM646X_EMAC_CNTRL_OFFSET	(0x0000)
@@ -29,4 +31,61 @@ void __init dm646x_init_ide(void); 
void __init dm646x_init_mcasp0(struct snd_platform_data *pdata);

void __init dm646x_init_mcasp1(struct snd_platform_data *pdata);



void dm646x_video_init(void);



enum vpif_if_type {

	VPIF_IF_BT656,

	VPIF_IF_BT1120,

	VPIF_IF_RAW_BAYER

};



struct vpif_interface {

	enum vpif_if_type if_type;

	unsigned hd_pol:1;

	unsigned vd_pol:1;

	unsigned fid_pol:1;

};



struct vpif_subdev_info {

	const char *name;

	struct i2c_board_info board_info;

	u32 input;

	u32 output;

	unsigned can_route:1;

	struct vpif_interface vpif_if;

};



struct vpif_display_config {

	int (*set_clock)(int, int);

	struct vpif_subdev_info *subdevinfo;

	int subdev_count;

	const char **output;

	int output_count;

	const char *card_name;

};



struct vpif_input {

	struct v4l2_input input;

	const char *subdev_name;

};



#define VPIF_CAPTURE_MAX_CHANNELS	2



struct vpif_capture_chan_config {

	const struct vpif_input *inputs;

	int input_count;

};



struct vpif_capture_config {

	int (*setup_input_channel_mode)(int);

	int (*setup_input_path)(int, const char *);

	struct vpif_capture_chan_config chan_config[VPIF_CAPTURE_MAX_CHANNELS];

	struct vpif_subdev_info *subdev_info;

	int subdev_count;

	const char *card_name;

};



void dm646x_setup_vpif(struct vpif_display_config *,

		       struct vpif_capture_config *);



#endif /* __ASM_ARCH_DM646X_H */

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