Skip to content

Commit

Permalink
DaVinci: DM646x - platform changes for vpif capture and display drivers
Browse files Browse the repository at this point in the history 
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: Manjunath Hadli <mrh@ti.com>
Signed-off-by: Brijesh Jadav <brijesh.j@ti.com>
Signed-off-by: Chaithrika U S <chaithrika@ti.com>
Reviewed-by: Hans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: Muralidharan Karicheri <m-karicheri2@ti.com>
Signed-off-by: Kevin Hilman <khilman@deeprootsystems.com>
  • Loading branch information
Muralidharan Karicheri authored and Kevin Hilman committed Sep 16, 2009
1 parent 51e68e2 commit 85609c1
Show file tree
Hide file tree
Showing 3 changed files with 481 additions and 1 deletion.
319 changes: 318 additions & 1 deletion arch/arm/mach-davinci/board-dm646x-evm.c
View file
Original file line number Diff line number Diff line change
Expand Up @@ -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>
Expand Down Expand Up @@ -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),
};
Expand Down Expand Up @@ -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),
Expand All @@ -301,19 +361,276 @@ 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 = {
.bus_freq = 100 /* kHz */,
.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)
Expand Down
Loading

0 comments on commit 85609c1

Please sign in to comment.