Since isp clocks have not been exposed yet, this patch
includes a temporal solution for testing mt9p031 driver
in Beagleboard xM.
Signed-off-by: Javier Martin <javier.mar...@vista-silicon.com>
---
arch/arm/mach-omap2/Makefile | 1 +
arch/arm/mach-omap2/board-omap3beagle-camera.c | 90 ++++++++++++++++++++++++
arch/arm/mach-omap2/board-omap3beagle.c | 55 ++++++++++++++
3 files changed, 146 insertions(+), 0 deletions(-)
create mode 100644 arch/arm/mach-omap2/board-omap3beagle-camera.c
diff --git a/arch/arm/mach-omap2/Makefile b/arch/arm/mach-omap2/Makefile
index 512b152..05cd983 100644
--- a/arch/arm/mach-omap2/Makefile
+++ b/arch/arm/mach-omap2/Makefile
@@ -179,6 +179,7 @@ obj-$(CONFIG_MACH_OMAP_2430SDP) +=
board-2430sdp.o \
hsmmc.o
obj-$(CONFIG_MACH_OMAP_APOLLON) += board-apollon.o
obj-$(CONFIG_MACH_OMAP3_BEAGLE) += board-omap3beagle.o \
+ board-omap3beagle-camera.o \
hsmmc.o
obj-$(CONFIG_MACH_DEVKIT8000) += board-devkit8000.o \
hsmmc.o
diff --git a/arch/arm/mach-omap2/board-omap3beagle-camera.c
b/arch/arm/mach-omap2/board-omap3beagle-camera.c
new file mode 100644
index 0000000..04365b2
--- /dev/null
+++ b/arch/arm/mach-omap2/board-omap3beagle-camera.c
@@ -0,0 +1,90 @@
+#include <linux/gpio.h>
+#include <linux/regulator/machine.h>
+
+#include <plat/i2c.h>
+
+#include <media/mt9p031.h>
+
+#include "devices.h"
+#include "../../../drivers/media/video/omap3isp/isp.h"
+
+#define MT9P031_RESET_GPIO 98
+#define MT9P031_XCLK ISP_XCLK_A
+
+static struct regulator *reg_1v8, *reg_2v8;
+
+static int beagle_cam_set_xclk(struct v4l2_subdev *subdev, int hz)
+{
+ struct isp_device *isp = v4l2_dev_to_isp_device(subdev->v4l2_dev);
+ int ret;
+
+ ret = isp->platform_cb.set_xclk(isp, hz, MT9P031_XCLK);
+ return 0;
+}
+
+static int beagle_cam_reset(struct v4l2_subdev *subdev, int active)
+{
+ /* Set RESET_BAR to !active */
+ gpio_set_value(MT9P031_RESET_GPIO, !active);
+
+ return 0;
+}
+
+static struct mt9p031_platform_data beagle_mt9p031_platform_data = {
+ .set_xclk = beagle_cam_set_xclk,
+ .reset = beagle_cam_reset,
+};
+
+static struct i2c_board_info mt9p031_camera_i2c_device = {
+ I2C_BOARD_INFO("mt9p031", 0x48),
+ .platform_data = &beagle_mt9p031_platform_data,
+};
+
+static struct isp_subdev_i2c_board_info mt9p031_camera_subdevs[] = {
+ {
+ .board_info = &mt9p031_camera_i2c_device,
+ .i2c_adapter_id = 2,
+ },
+ { NULL, 0, },
+};
+
+static struct isp_v4l2_subdevs_group beagle_camera_subdevs[] = {
+ {
+ .subdevs = mt9p031_camera_subdevs,
+ .interface = ISP_INTERFACE_PARALLEL,
+ .bus = {
+ .parallel = {
+ .data_lane_shift = 0,
+ .clk_pol = 1,
+ .bridge = ISPCTRL_PAR_BRIDGE_DISABLE,
+ }
+ },
+ },
+ { },
+};
+
+static struct isp_platform_data beagle_isp_platform_data = {
+ .subdevs = beagle_camera_subdevs,
+};
+
+static int __init beagle_camera_init(void)
+{
+ reg_1v8 = regulator_get(NULL, "cam_1v8");
+ if (IS_ERR(reg_1v8))
+ pr_err("%s: cannot get cam_1v8 regulator\n", __func__);
+ else
+ regulator_enable(reg_1v8);
+
+ reg_2v8 = regulator_get(NULL, "cam_2v8");
+ if (IS_ERR(reg_2v8))
+ pr_err("%s: cannot get cam_2v8 regulator\n", __func__);
+ else
+ regulator_enable(reg_2v8);
+
+ omap_register_i2c_bus(2, 100, NULL, 0);
+ gpio_request(MT9P031_RESET_GPIO, "cam_rst");
+ gpio_direction_output(MT9P031_RESET_GPIO, 0);
+ omap3_init_camera(&beagle_isp_platform_data);
+ return 0;
+}
+late_initcall(beagle_camera_init);
diff --git a/arch/arm/mach-omap2/board-omap3beagle.c
b/arch/arm/mach-omap2/board-omap3beagle.c
index 33007fd..c18d21c 100644
--- a/arch/arm/mach-omap2/board-omap3beagle.c
+++ b/arch/arm/mach-omap2/board-omap3beagle.c
@@ -24,12 +24,16 @@
#include <linux/input.h>
#include <linux/gpio_keys.h>
#include <linux/opp.h>
+#include <linux/i2c.h>
+#include <linux/mm.h>
+#include <linux/videodev2.h>
#include <linux/mtd/mtd.h>
#include <linux/mtd/partitions.h>
#include <linux/mtd/nand.h>
#include <linux/mmc/host.h>
+#include <linux/gpio.h>
#include <linux/regulator/machine.h>
#include <linux/i2c/twl.h>
@@ -47,6 +51,7 @@
#include <plat/nand.h>
#include <plat/usb.h>
#include <plat/omap_device.h>
+#include <plat/i2c.h>
#include "mux.h"
#include "hsmmc.h"
@@ -273,6 +278,44 @@ static struct regulator_consumer_supply beagle_vsim_supply
= {
static struct gpio_led gpio_leds[];
+static struct regulator_consumer_supply beagle_vaux3_supply = {
+ .supply = "cam_1v8",
+};
+
+static struct regulator_consumer_supply beagle_vaux4_supply = {
+ .supply = "cam_2v8",
+};
+
+/* VAUX3 for CAM_1V8 */
+static struct regulator_init_data beagle_vaux3 = {
+ .constraints = {
+ .min_uV = 1800000,
+ .max_uV = 1800000,
+ .apply_uV = true,
+ .valid_modes_mask = REGULATOR_MODE_NORMAL
+ | REGULATOR_MODE_STANDBY,
+ .valid_ops_mask = REGULATOR_CHANGE_MODE
+ | REGULATOR_CHANGE_STATUS,
+ },
+ .num_consumer_supplies = 1,
+ .consumer_supplies = &beagle_vaux3_supply,
+};
+
+/* VAUX4 for CAM_2V8 */
+static struct regulator_init_data beagle_vaux4 = {
+ .constraints = {
+ .min_uV = 1800000,
+ .max_uV = 1800000,
+ .apply_uV = true,
+ .valid_modes_mask = REGULATOR_MODE_NORMAL
+ | REGULATOR_MODE_STANDBY,
+ .valid_ops_mask = REGULATOR_CHANGE_MODE
+ | REGULATOR_CHANGE_STATUS,
+ },
+ .num_consumer_supplies = 1,
+ .consumer_supplies = &beagle_vaux4_supply,
+};
+
static int beagle_twl_gpio_setup(struct device *dev,
unsigned gpio, unsigned ngpio)
{
@@ -309,6 +352,15 @@ static int beagle_twl_gpio_setup(struct device *dev,
pr_err("%s: unable to configure EHCI_nOC\n", __func__);
}
+ if (omap3_beagle_get_rev() == OMAP3BEAGLE_BOARD_XM) {
+ /*
+ * Power on camera interface - only on pre-production, not
+ * needed on production boards
+ */
+ gpio_request(gpio + 2, "CAM_EN");
+ gpio_direction_output(gpio + 2, 1);
+ }
+
/*
* TWL4030_GPIO_MAX + 0 == ledA, EHCI nEN_USB_PWR (out, XM active
* high / others active low)
@@ -451,6 +503,8 @@ static struct twl4030_platform_data beagle_twldata = {
.vsim = &beagle_vsim,
.vdac = &beagle_vdac,
.vpll2 = &beagle_vpll2,
+ .vaux3 = &beagle_vaux3,
+ .vaux4 = &beagle_vaux4,
};
static struct i2c_board_info __initdata beagle_i2c_boardinfo[] = {
@@ -658,6 +712,7 @@ static void __init omap3_beagle_init(void)
{
omap3_mux_init(board_mux, OMAP_PACKAGE_CBB);
omap3_beagle_init_rev();
+
omap3_beagle_i2c_init();
platform_add_devices(omap3_beagle_devices,
ARRAY_SIZE(omap3_beagle_devices));
--
1.7.0.4
--
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