[PATCH v2 3/5] omap3evm: Add Camera board init/hookup file
Deepthy Ravi
deepthy.ravi at ti.com
Tue Sep 27 09:40:46 EDT 2011
From: Vaibhav Hiremath <hvaibhav at ti.com>
Adds board support for MT9T111 sensor.
Signed-off-by: Vaibhav Hiremath <hvaibhav at ti.com>
Signed-off-by: Deepthy Ravi <deepthy.ravi at ti.com>
---
arch/arm/mach-omap2/Makefile | 5 +
arch/arm/mach-omap2/board-omap3evm-camera.c | 185 +++++++++++++++++++++++++++
arch/arm/mach-omap2/board-omap3evm.c | 4 +
3 files changed, 194 insertions(+), 0 deletions(-)
create mode 100644 arch/arm/mach-omap2/board-omap3evm-camera.c
diff --git a/arch/arm/mach-omap2/Makefile b/arch/arm/mach-omap2/Makefile
index f343365..a19753c 100644
--- a/arch/arm/mach-omap2/Makefile
+++ b/arch/arm/mach-omap2/Makefile
@@ -280,3 +280,8 @@ disp-$(CONFIG_OMAP2_DSS) := display.o
obj-y += $(disp-m) $(disp-y)
obj-y += common-board-devices.o twl-common.o
+
+ifeq ($(CONFIG_MACH_OMAP3EVM),y)
+evm-camera-$(CONFIG_VIDEO_OMAP3) := board-omap3evm-camera.o
+obj-y += $(evm-camera-m) $(evm-camera-y)
+endif
diff --git a/arch/arm/mach-omap2/board-omap3evm-camera.c b/arch/arm/mach-omap2/board-omap3evm-camera.c
new file mode 100644
index 0000000..e762f61
--- /dev/null
+++ b/arch/arm/mach-omap2/board-omap3evm-camera.c
@@ -0,0 +1,185 @@
+/*
+ * arch/arm/mach-omap2/board-omap3evm-camera.c
+ *
+ * OMAP3EVM: Driver for Leopard Module Board
+ *
+ * Copyright (C) 2011 Texas Instruments Inc
+ * Author: Vaibhav Hiremath <hvaibhav at ti.com>
+ *
+ * This package 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., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+
+#include <linux/io.h>
+#include <linux/i2c.h>
+#include <linux/delay.h>
+#include <linux/gpio.h>
+#include <linux/err.h>
+#include <linux/platform_device.h>
+#include <mach/gpio.h>
+#include <media/mt9t111.h>
+#include <media/omap3isp.h>
+#include <../drivers/media/video/omap3isp/isp.h>
+#include "devices.h"
+
+#define CAM_USE_XCLKA 0
+
+#define T2_GPIO_2 194
+#define nCAM_VD_SEL 157
+#define nCAM_VD_EN 200
+
+/* mux id to enable/disable signal routing to different peripherals */
+enum omap3evm_cam_mux {
+ MUX_EN_TVP5146 = 0,
+ MUX_EN_CAMERA_SENSOR,
+ MUX_EN_EXP_CAMERA_SENSOR,
+ MUX_INVALID,
+};
+
+/**
+ * @brief omap3evm_set_mux - Sets mux to enable/disable signal routing to
+ * different peripherals present on new EVM board
+ *
+ * @param mux_id - enum, mux id to enable/disable
+ * @param value - enum, ENABLE_MUX for enabling and DISABLE_MUX for disabling
+ *
+ */
+static void omap3evm_set_mux(enum omap3evm_cam_mux mux_id)
+{
+ switch (mux_id) {
+ /*
+ * JP1 jumper need to configure to choose between on-board
+ * camera sensor conn and on-board LI-3MC02 camera sensor.
+ */
+ case MUX_EN_CAMERA_SENSOR:
+ /* Set nCAM_VD_EN (T2_GPIO8) = 0 */
+ gpio_set_value_cansleep(nCAM_VD_EN, 0);
+ /* Set nCAM_VD_SEL (GPIO157) = 0 */
+ gpio_set_value(nCAM_VD_SEL, 0);
+ break;
+ case MUX_EN_EXP_CAMERA_SENSOR:
+ /* Set nCAM_VD_EN (T2_GPIO8) = 1 */
+ gpio_set_value_cansleep(nCAM_VD_EN, 1);
+ break;
+ case MUX_EN_TVP5146:
+ default:
+ /* Set nCAM_VD_EN (T2_GPIO8) = 0 */
+ gpio_set_value_cansleep(nCAM_VD_EN, 0);
+ /* Set nCAM_VD_SEL (GPIO157) = 1 */
+ gpio_set_value(nCAM_VD_SEL, 1);
+ break;
+ }
+}
+
+/* MT9T111: 3M sensor */
+static int omap3evm_mt9t111_s_power(struct v4l2_subdev *subdev, u32 on)
+{
+ struct isp_device *isp = v4l2_dev_to_isp_device(subdev->v4l2_dev);
+
+ omap3evm_set_mux(MUX_EN_CAMERA_SENSOR);
+
+ if (on) {
+ /* Enable EXTCLK */
+ if (isp->platform_cb.set_xclk)
+ isp->platform_cb.set_xclk(isp, 24000000, CAM_USE_XCLKA);
+ udelay(5);
+ } else {
+ if (isp->platform_cb.set_xclk)
+ isp->platform_cb.set_xclk(isp, 0, CAM_USE_XCLKA);
+ }
+
+ return 0;
+}
+
+static struct mt9t111_platform_data omap3evm_mt9t111_platform_data = {
+ .s_power = omap3evm_mt9t111_s_power,
+};
+
+
+#define MT9T111_I2C_BUS_NUM 2
+
+static struct i2c_board_info omap3evm_camera_i2c_devices[] = {
+ {
+ I2C_BOARD_INFO(MT9T111_MODULE_NAME, MT9T111_I2C_ADDR),
+ .platform_data = &omap3evm_mt9t111_platform_data,
+ }
+};
+
+static struct isp_subdev_i2c_board_info omap3evm_mt9t111_subdevs[] = {
+ {
+ .board_info = &omap3evm_camera_i2c_devices[0],
+ .i2c_adapter_id = MT9T111_I2C_BUS_NUM,
+ },
+ { NULL, 0 },
+};
+
+static struct isp_v4l2_subdevs_group omap3evm_camera_subdevs[] = {
+ {
+ .subdevs = omap3evm_mt9t111_subdevs,
+ .interface = ISP_INTERFACE_PARALLEL,
+ .bus = {
+ .parallel = {
+ .data_lane_shift = 1,
+ .clk_pol = 0,
+ .hs_pol = 0,
+ .vs_pol = 0,
+ .bridge = 3,
+ .bt656 = 0,
+ },
+ },
+ },
+ { NULL, 0 },
+};
+
+static struct isp_platform_data omap3evm_isp_platform_data = {
+ .subdevs = omap3evm_camera_subdevs,
+};
+
+static struct gpio omap3evm_gpios[] __initdata = {
+ /* First level GPIO enable: T2_GPIO.2 */
+ { T2_GPIO_2, GPIOF_OUT_INIT_LOW, "T2_GPIO.2" },
+ /* nCAM_VD_SEL (GPIO157) */
+ { nCAM_VD_SEL, GPIOF_OUT_INIT_HIGH, "cam_vd_sel" },
+ /*EXP_nCAM_VD_EN (T2_GPIO.8) */
+ { nCAM_VD_EN, GPIOF_OUT_INIT_LOW, "cam_vd_en" },
+};
+
+static int __init omap3evm_cam_init(void)
+{
+ int ret;
+
+ ret = gpio_request_array(omap3evm_gpios,
+ ARRAY_SIZE(omap3evm_gpios));
+ if (ret < 0) {
+ printk(KERN_ERR "Unable to get GPIO pins\n");
+ return ret;
+ }
+
+ omap3_init_camera(&omap3evm_isp_platform_data);
+
+ printk(KERN_INFO "omap3evm camera init done successfully...\n");
+ return 0;
+}
+
+static void __exit omap3evm_cam_exit(void)
+{
+ gpio_free_array(omap3evm_gpios,
+ ARRAY_SIZE(omap3evm_gpios));
+}
+
+module_init(omap3evm_cam_init);
+module_exit(omap3evm_cam_exit);
+
+MODULE_AUTHOR("Texas Instruments");
+MODULE_DESCRIPTION("OMAP3EVM: Driver for Leopard Module Board");
+MODULE_LICENSE("GPL");
diff --git a/arch/arm/mach-omap2/board-omap3evm.c b/arch/arm/mach-omap2/board-omap3evm.c
index f63a8fa..485bc1c 100644
--- a/arch/arm/mach-omap2/board-omap3evm.c
+++ b/arch/arm/mach-omap2/board-omap3evm.c
@@ -573,6 +573,8 @@ static struct omap_board_mux omap35x_board_mux[] __initdata = {
OMAP_PIN_OFF_NONE),
OMAP3_MUX(GPMC_WAIT2, OMAP_MUX_MODE4 | OMAP_PIN_INPUT_PULLUP |
OMAP_PIN_OFF_NONE),
+ OMAP3_MUX(MCBSP1_FSR, OMAP_MUX_MODE4 | OMAP_PIN_INPUT_PULLUP |
+ OMAP_PIN_OFF_NONE),
#ifdef CONFIG_WL12XX_PLATFORM_DATA
/* WLAN IRQ - GPIO 149 */
OMAP3_MUX(UART1_RTS, OMAP_MUX_MODE4 | OMAP_PIN_INPUT),
@@ -598,6 +600,8 @@ static struct omap_board_mux omap36x_board_mux[] __initdata = {
OMAP3_MUX(MCSPI1_CS1, OMAP_MUX_MODE4 | OMAP_PIN_INPUT_PULLUP |
OMAP_PIN_OFF_INPUT_PULLUP | OMAP_PIN_OFF_OUTPUT_LOW |
OMAP_PIN_OFF_WAKEUPENABLE),
+ OMAP3_MUX(MCBSP1_FSR, OMAP_MUX_MODE4 | OMAP_PIN_INPUT_PULLUP |
+ OMAP_PIN_OFF_NONE),
/* AM/DM37x EVM: DSS data bus muxed with sys_boot */
OMAP3_MUX(DSS_DATA18, OMAP_MUX_MODE3 | OMAP_PIN_OFF_NONE),
OMAP3_MUX(DSS_DATA19, OMAP_MUX_MODE3 | OMAP_PIN_OFF_NONE),
--
1.7.0.4
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