Thanks,
Vaibhav Hiremath
> -----Original Message-----
> From: Aguirre Rodriguez, Sergio Alberto
> Sent: Friday, December 12, 2008 2:09 AM
> To: linux-omap@xxxxxxxxxxxxxxx; video4linux-list@xxxxxxxxxx
> Cc: Sakari Ailus; Tuukka.O Toivonen; Hiremath, Vaibhav; Nagalla,
> Hari
> Subject: [REVIEW PATCH 14/14] OMAP34XX: CAM: Add Sensors Support
>
> From 4fa46d05b1ecb83ccf2dd1c158ecba70dafc5888 Mon Sep 17 00:00:00
> 2001
> From: Sergio Aguirre <saaguirre@xxxxxx>
> Date: Thu, 11 Dec 2008 13:42:51 -0600
> Subject: [PATCH] OMAP34XX: CAM: Add Sensors Support
>
> This adds support in OMAP34xx SDP board file for Sensor and Lens
> driver.
>
> Signed-off-by: Sergio Aguirre <saaguirre@xxxxxx>
> ---
> arch/arm/mach-omap2/board-3430sdp.c | 300
> ++++++++++++++++++++++++++++++++++-
> 1 files changed, 299 insertions(+), 1 deletions(-)
>
> diff --git a/arch/arm/mach-omap2/board-3430sdp.c b/arch/arm/mach-
> omap2/board-3430sdp.c
> index ade186b..59a2765 100644
> --- a/arch/arm/mach-omap2/board-3430sdp.c
> +++ b/arch/arm/mach-omap2/board-3430sdp.c
> @@ -23,6 +23,7 @@
> #include <linux/spi/spi.h>
> #include <linux/spi/ads7846.h>
> #include <linux/i2c/twl4030.h>
> +#include <linux/mm.h>
>
> #include <mach/hardware.h>
> #include <asm/mach-types.h>
> @@ -40,6 +41,20 @@
> #include <mach/dma.h>
> #include <mach/gpmc.h>
>
> +#ifdef CONFIG_VIDEO_OMAP3
> +#include <media/v4l2-int-device.h>
> +#include <../drivers/media/video/omap34xxcam.h>
> +#include <../drivers/media/video/isp/ispreg.h>
[Hiremath, Vaibhav] Is it acceptable to include the private header files of drivers here?
> +#if defined(CONFIG_VIDEO_MT9P012) ||
> defined(CONFIG_VIDEO_MT9P012_MODULE)
> +#include <media/mt9p012.h>
> +static enum v4l2_power mt9p012_previous_power = V4L2_POWER_OFF;
> +#endif
> +#endif
> +
> +#ifdef CONFIG_VIDEO_DW9710
> +#include <../drivers/media/video/dw9710.h>
> +#endif
> +
> #include <asm/io.h>
> #include <asm/delay.h>
> #include <mach/control.h>
> @@ -238,6 +253,273 @@ static struct spi_board_info
> sdp3430_spi_board_info[] __initdata = {
> },
> };
>
> +#ifdef CONFIG_VIDEO_OMAP3
> +static void __iomem *fpga_map_addr;
> +
> +static void enable_fpga_vio_1v8(u8 enable)
> +{
> + u16 reg_val;
> +
> + fpga_map_addr = ioremap(DEBUG_BASE, 4096);
> + reg_val = readw(fpga_map_addr + REG_SDP3430_FPGA_GPIO_2);
> +
> + /* Ensure that the SPR_GPIO1_3v3 is 0 - powered off.. 1 is on
> */
> + if (reg_val & FPGA_SPR_GPIO1_3v3) {
> + reg_val |= FPGA_SPR_GPIO1_3v3;
> + reg_val |= FPGA_GPIO6_DIR_CTRL; /* output mode */
> + writew(reg_val, fpga_map_addr +
> REG_SDP3430_FPGA_GPIO_2);
> + /* give a few milli sec to settle down
> + * Let the sensor also settle down.. if required..
> + */
> + if (enable)
> + mdelay(10);
> + }
> +
> + if (enable) {
> + reg_val |= FPGA_SPR_GPIO1_3v3 | FPGA_GPIO6_DIR_CTRL;
> + writew(reg_val, fpga_map_addr +
> REG_SDP3430_FPGA_GPIO_2);
> + }
> + /* Vrise time for the voltage - should be less than 1 ms */
> + mdelay(1);
> +}
> +#endif
> +
> +#ifdef CONFIG_VIDEO_DW9710
> +static int dw9710_lens_power_set(enum v4l2_power power)
> +{
> +
> + /* The power change depends on MT9P012 powerup, so if we
> request a
> + * power state different from sensor, we should return error
> + */
> + if ((mt9p012_previous_power != V4L2_POWER_OFF) &&
> + (power != mt9p012_previous_power))
> + return -EIO;
> +
> + switch (power) {
> + case V4L2_POWER_OFF:
> + /* Power Down Sequence */
> +#ifdef CONFIG_TWL4030_CORE
> + twl4030_i2c_write_u8(TWL4030_MODULE_PM_RECEIVER,
> + VAUX_DEV_GRP_NONE, TWL4030_VAUX2_DEV_GRP);
> +#else
> +#error "no power companion board defined!"
> +#endif
> + enable_fpga_vio_1v8(0);
> + omap_free_gpio(MT9P012_RESET_GPIO);
> + iounmap(fpga_map_addr);
> + omap_free_gpio(MT9P012_STANDBY_GPIO);
> + break;
> + case V4L2_POWER_ON:
> + /* Request and configure gpio pins */
> + if (omap_request_gpio(MT9P012_STANDBY_GPIO) != 0) {
> + printk(KERN_WARNING "Could not request GPIO %d"
> + " for MT9P012\n",
> + MT9P012_STANDBY_GPIO);
> + return -EIO;
> + }
> +
> + /* Request and configure gpio pins */
> + if (omap_request_gpio(MT9P012_RESET_GPIO) != 0)
> + return -EIO;
> +
> + /* set to output mode */
> + gpio_direction_output(MT9P012_STANDBY_GPIO, true);
> + /* set to output mode */
> + gpio_direction_output(MT9P012_RESET_GPIO, true);
> +
> + /* STANDBY_GPIO is active HIGH for set LOW to release */
> + gpio_set_value(MT9P012_STANDBY_GPIO, 1);
> +
> + /* nRESET is active LOW. set HIGH to release reset */
> + gpio_set_value(MT9P012_RESET_GPIO, 1);
> +
> + /* turn on digital power */
> + enable_fpga_vio_1v8(1);
> +#ifdef CONFIG_TWL4030_CORE
> + /* turn on analog power */
> + twl4030_i2c_write_u8(TWL4030_MODULE_PM_RECEIVER,
> + VAUX_2_8_V, TWL4030_VAUX2_DEDICATED);
> + twl4030_i2c_write_u8(TWL4030_MODULE_PM_RECEIVER,
> + VAUX_DEV_GRP_P1, TWL4030_VAUX2_DEV_GRP);
> +#else
> +#error "no power companion board defined!"
> +#endif
> + /* out of standby */
> + gpio_set_value(MT9P012_STANDBY_GPIO, 0);
> + udelay(1000);
> +
> + /* have to put sensor to reset to guarantee detection */
> + gpio_set_value(MT9P012_RESET_GPIO, 0);
> +
> + udelay(1500);
> +
> + /* nRESET is active LOW. set HIGH to release reset */
> + gpio_set_value(MT9P012_RESET_GPIO, 1);
> + /* give sensor sometime to get out of the reset.
> + * Datasheet says 2400 xclks. At 6 MHz, 400 usec is
> + * enough
> + */
> + udelay(300);
> + break;
> + case V4L2_POWER_STANDBY:
> + break;
> + }
> + return 0;
> +}
> +
> +static int dw9710_lens_set_prv_data(void *priv)
> +{
> + struct omap34xxcam_hw_config *hwc = priv;
> +
> + hwc->dev_index = 0;
> + hwc->dev_minor = 0;
> + hwc->dev_type = OMAP34XXCAM_SLAVE_LENS;
> +
> + return 0;
> +}
> +
> +static struct dw9710_platform_data sdp3430_dw9710_platform_data = {
> + .power_set = dw9710_lens_power_set,
> + .priv_data_set = dw9710_lens_set_prv_data,
> +};
> +#endif
> +
> +#if defined(CONFIG_VIDEO_MT9P012) ||
> defined(CONFIG_VIDEO_MT9P012_MODULE)
> +static struct omap34xxcam_sensor_config cam_hwc = {
> + .sensor_isp = 0,
> + .xclk = OMAP34XXCAM_XCLK_A,
> + .capture_mem = PAGE_ALIGN(2592 * 1944 * 2) * 4,
> +};
> +
> +static int mt9p012_sensor_set_prv_data(void *priv)
> +{
> + struct omap34xxcam_hw_config *hwc = priv;
> +
> + hwc->u.sensor.xclk = cam_hwc.xclk;
> + hwc->u.sensor.sensor_isp = cam_hwc.sensor_isp;
> + hwc->u.sensor.capture_mem = cam_hwc.capture_mem;
> + hwc->dev_index = 0;
> + hwc->dev_minor = 0;
> + hwc->dev_type = OMAP34XXCAM_SLAVE_SENSOR;
> + return 0;
> +}
> +
> +static struct isp_interface_config mt9p012_if_config = {
> + .ccdc_par_ser = ISP_PARLL,
> + .dataline_shift = 0x1,
> + .hsvs_syncdetect = ISPCTRL_SYNC_DETECT_VSRISE,
> + .vdint0_timing = 0x0,
> + .vdint1_timing = 0x0,
> + .strobe = 0x0,
> + .prestrobe = 0x0,
> + .shutter = 0x0,
> + .prev_sph = 2,
> + .prev_slv = 0,
> + .wenlog = ISPCCDC_CFG_WENLOG_OR,
> + .u.par.par_bridge = 0x0,
> + .u.par.par_clk_pol = 0x0,
> +};
> +
> +static int mt9p012_sensor_power_set(enum v4l2_power power)
> +{
> + switch (power) {
> + case V4L2_POWER_OFF:
> + /* Power Down Sequence */
> +#ifdef CONFIG_TWL4030_CORE
> + twl4030_i2c_write_u8(TWL4030_MODULE_PM_RECEIVER,
> + VAUX_DEV_GRP_NONE, TWL4030_VAUX2_DEV_GRP);
> +#else
> +#error "no power companion board defined!"
> +#endif
> + enable_fpga_vio_1v8(0);
> + omap_free_gpio(MT9P012_RESET_GPIO);
> + iounmap(fpga_map_addr);
> + omap_free_gpio(MT9P012_STANDBY_GPIO);
> + break;
> + case V4L2_POWER_ON:
> + if (mt9p012_previous_power == V4L2_POWER_OFF) {
> + /* Power Up Sequence */
> + isp_configure_interface(&mt9p012_if_config);
> +
> + /* Request and configure gpio pins */
> + if (omap_request_gpio(MT9P012_STANDBY_GPIO) != 0)
> {
> + printk(KERN_WARNING "Could not request GPIO
> %d"
> + " for MT9P012\n",
> + MT9P012_STANDBY_GPIO);
> + return -EIO;
> + }
> +
> + /* Request and configure gpio pins */
> + if (omap_request_gpio(MT9P012_RESET_GPIO) != 0)
> + return -EIO;
> +
> + /* set to output mode */
> + gpio_direction_output(MT9P012_STANDBY_GPIO, true);
> + /* set to output mode */
> + gpio_direction_output(MT9P012_RESET_GPIO, true);
> +
> + /* STANDBY_GPIO is active HIGH for set LOW to
> release */
> + gpio_set_value(MT9P012_STANDBY_GPIO, 1);
> +
> + /* nRESET is active LOW. set HIGH to release reset
> */
> + gpio_set_value(MT9P012_RESET_GPIO, 1);
> +
> + /* turn on digital power */
> + enable_fpga_vio_1v8(1);
> +#ifdef CONFIG_TWL4030_CORE
> + /* turn on analog power */
> + twl4030_i2c_write_u8(TWL4030_MODULE_PM_RECEIVER,
> + VAUX_2_8_V, TWL4030_VAUX2_DEDICATED);
> + twl4030_i2c_write_u8(TWL4030_MODULE_PM_RECEIVER,
> + VAUX_DEV_GRP_P1,
> TWL4030_VAUX2_DEV_GRP);
> +#else
> +#error "no power companion board defined!"
> +#endif
> + }
> +
> + /* out of standby */
> + gpio_set_value(MT9P012_STANDBY_GPIO, 0);
> + udelay(1000);
> +
> + if (mt9p012_previous_power == V4L2_POWER_OFF) {
> + /* have to put sensor to reset to guarantee
> detection */
> + gpio_set_value(MT9P012_RESET_GPIO, 0);
> +
> + udelay(1500);
> +
> + /* nRESET is active LOW. set HIGH to release reset
> */
> + gpio_set_value(MT9P012_RESET_GPIO, 1);
> + /* give sensor sometime to get out of the reset.
> + * Datasheet says 2400 xclks. At 6 MHz, 400 usec
> is
> + * enough
> + */
> + udelay(300);
> + }
> + break;
> + case V4L2_POWER_STANDBY:
> + /* stand by */
> + gpio_set_value(MT9P012_STANDBY_GPIO, 1);
> + break;
> + }
> + /* Save powerstate to know what was before calling POWER_ON.
> */
> + mt9p012_previous_power = power;
> + return 0;
> +}
> +
> +static u32 mt9p012_sensor_set_xclk(u32 xclkfreq)
> +{
> + return isp_set_xclk(xclkfreq, MT9P012_USE_XCLKA);
> +}
> +
> +static struct mt9p012_platform_data sdp3430_mt9p012_platform_data =
> {
> + .power_set = mt9p012_sensor_power_set,
> + .priv_data_set = mt9p012_sensor_set_prv_data,
> + .set_xclk = mt9p012_sensor_set_xclk,
> +};
> +
> +#endif
> +
> +
> static struct platform_device sdp3430_lcd_device = {
> .name = "sdp2430_lcd",
> .id = -1,
> @@ -434,11 +716,27 @@ static struct i2c_board_info __initdata
> sdp3430_i2c_boardinfo[] = {
> },
> };
>
> +static struct i2c_board_info __initdata sdp3430_i2c_boardinfo_2[] =
> {
> +#if defined(CONFIG_VIDEO_MT9P012) ||
> defined(CONFIG_VIDEO_MT9P012_MODULE)
> + {
> + I2C_BOARD_INFO("mt9p012", MT9P012_I2C_ADDR),
> + .platform_data = &sdp3430_mt9p012_platform_data,
> + },
> +#ifdef CONFIG_VIDEO_DW9710
> + {
> + I2C_BOARD_INFO(DW9710_NAME, DW9710_AF_I2C_ADDR),
> + .platform_data = &sdp3430_dw9710_platform_data,
> + },
> +#endif
> +#endif
> +};
> +
> static int __init omap3430_i2c_init(void)
> {
> omap_register_i2c_bus(1, 2600, sdp3430_i2c_boardinfo,
> ARRAY_SIZE(sdp3430_i2c_boardinfo));
> - omap_register_i2c_bus(2, 400, NULL, 0);
> + omap_register_i2c_bus(2, 400, sdp3430_i2c_boardinfo_2,
> + ARRAY_SIZE(sdp3430_i2c_boardinfo_2));
> omap_register_i2c_bus(3, 400, NULL, 0);
> return 0;
> }
> --
> 1.5.6.5
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