Adds board support for an MT9M032 based camera to omap3evm.
Sigend-off-by: Martin Hostettler <mar...@neutronstar.dyndns.org>
---
arch/arm/mach-omap2/Makefile | 1 +
arch/arm/mach-omap2/board-omap3evm-camera.c | 177 +++++++++++++++++++++++++++
2 files changed, 178 insertions(+), 0 deletions(-)
create mode 100644 arch/arm/mach-omap2/board-omap3evm-camera.c
This patch depends on the recent not yet mainline media controller framework
and omap3-isp driver availible at git.linuxtv.org/pinchartl/media.git.
diff --git a/arch/arm/mach-omap2/Makefile b/arch/arm/mach-omap2/Makefile
index 60e51bc..5f43cc5 100644
--- a/arch/arm/mach-omap2/Makefile
+++ b/arch/arm/mach-omap2/Makefile
@@ -132,6 +132,7 @@ obj-$(CONFIG_MACH_OMAP3_TORPEDO) +=
board-omap3logic.o \
obj-$(CONFIG_MACH_OVERO) += board-overo.o \
hsmmc.o
obj-$(CONFIG_MACH_OMAP3EVM) += board-omap3evm.o \
+ board-omap3evm-camera.o \
hsmmc.o
obj-$(CONFIG_MACH_OMAP3_PANDORA) += board-omap3pandora.o \
hsmmc.o
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..ea82a49
--- /dev/null
+++ b/arch/arm/mach-omap2/board-omap3evm-camera.c
@@ -0,0 +1,177 @@
+/*
+ * Copyright (C) 2010-2011 Lund Engineering
+ * Contact: Gil Lund <gwl...@lundeng.com>
+ * Author: Martin Hostettler <mar...@neutronstar.dyndns.org>
+ *
+ * This program 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., 51 Franklin St, Fifth Floor, Boston, MA
+ * 02110-1301 USA
+ */
+
+#include <linux/i2c.h>
+#include <linux/init.h>
+#include <linux/platform_device.h>
+
+#include <asm/gpio.h>
+#include <plat/mux.h>
+#include "mux.h"
+
+#include "../../../drivers/media/video/isp/isp.h"
+#include "../../../drivers/media/video/mt9m032.h"
+
+#include "devices.h"
+
+#define EVM_TWL_GPIO_BASE OMAP_MAX_GPIO_LINES
+#define GPIO98_VID_DEC_RES 98
+#define nCAM_VD_SEL 157
+
+#define MT9M032_I2C_BUS_NUM 2
+
+
+enum omap3evmdc_mux {
+ MUX_TVP5146,
+ MUX_CAMERA_SENSOR,
+ MUX_EXP_CAMERA_SENSOR,
+};
+
+/**
+ * omap3evm_set_mux - Sets mux to enable signal routing to
+ * different peripherals present on new EVM board
+ * @mux_id: enum, mux id to enable
+ *
+ * Returns 0 for success or a negative error code
+ */
+static int omap3evm_set_mux(enum omap3evmdc_mux mux_id)
+{
+ /* Set GPIO6 = 1 */
+ gpio_set_value_cansleep(EVM_TWL_GPIO_BASE + 6, 1);
+ gpio_set_value_cansleep(EVM_TWL_GPIO_BASE + 2, 0);
+
+ switch (mux_id) {
+ case MUX_TVP5146:
+ gpio_set_value_cansleep(EVM_TWL_GPIO_BASE + 2, 0);
+ gpio_set_value(nCAM_VD_SEL, 1);
+ break;
+
+ case MUX_CAMERA_SENSOR:
+ gpio_set_value_cansleep(EVM_TWL_GPIO_BASE + 2, 0);
+ gpio_set_value(nCAM_VD_SEL, 0);
+ break;
+
+ case MUX_EXP_CAMERA_SENSOR:
+ gpio_set_value_cansleep(EVM_TWL_GPIO_BASE + 2, 1);
+ break;
+
+ default:
+ pr_err("omap3evm-camera: Invalid mux id #%d\n", mux_id);
+ return -EINVAL;
+ }
+
+ return 0;
+}
+
+static struct mt9m032_platform_data mt9m032_platform_data = {
+ .ext_clock = 13500000,
+ .pll_pre_div = 6,
+ .pll_mul = 120,
+ .pll_out_div = 5,
+ .invert_pixclock = 1,
+};
+
+static struct i2c_board_info camera_i2c_devices[] = {
+ {
+ I2C_BOARD_INFO(MT9M032_NAME, MT9M032_I2C_ADDR),
+ .platform_data = &mt9m032_platform_data,
+ },
+};
+
+static struct isp_subdev_i2c_board_info camera_i2c_subdevs[] = {
+ {
+ .board_info = &camera_i2c_devices[0],
+ .i2c_adapter_id = MT9M032_I2C_BUS_NUM,
+ },
+ {},
+};
+
+static struct isp_v4l2_subdevs_group camera_subdevs[] = {
+ {
+ .subdevs = camera_i2c_subdevs,
+ .interface = ISP_INTERFACE_PARALLEL,
+ .bus = {
+ .parallel = {
+ .data_lane_shift = 1,
+ .clk_pol = 0,
+ .bridge = ISPCTRL_PAR_BRIDGE_DISABLE,
+ .width = 8,
+ }
+ },
+ },
+ {},
+};
+
+static struct isp_platform_data isp_platform_data = {
+ .subdevs = camera_subdevs,
+};
+
+static int __init camera_init(void)
+{
+ omap_mux_init_gpio(nCAM_VD_SEL, OMAP_PIN_OUTPUT);
+ if (gpio_request(nCAM_VD_SEL, "nCAM_VD_SEL") < 0) {
+ pr_err("omap3evm-camera: Failed to get GPIO nCAM_VD_SEL(%d)\n",
+ nCAM_VD_SEL);
+ goto err;
+ }
+ if (gpio_direction_output(nCAM_VD_SEL, 1) < 0) {
+ pr_err("omap3evm-camera: Failed to set GPIO nCAM_VD_SEL(%d)
direction\n",
+ nCAM_VD_SEL);
+ goto err_vdsel;
+ }
+
+ if (gpio_request(EVM_TWL_GPIO_BASE + 2, "T2_GPIO2") < 0) {
+ pr_err("omap3evm-camera: Failed to get GPIO T2_GPIO2(%d)\n",
+ EVM_TWL_GPIO_BASE + 2);
+ goto err_vdsel;
+ }
+ if (gpio_direction_output(EVM_TWL_GPIO_BASE + 2, 0) < 0) {
+ pr_err("omap3evm-camera: Failed to set GPIO T2_GPIO2(%d)
direction\n",
+ EVM_TWL_GPIO_BASE + 2);
+ goto err_2;
+ }
+
+ if (gpio_request(EVM_TWL_GPIO_BASE + 8, "nCAM_VD_EN") < 0) {
+ pr_err("omap3evm-camera: Failed to get GPIO nCAM_VD_EN(%d)\n",
+ EVM_TWL_GPIO_BASE + 8);
+ goto err_2;
+ }
+ if (gpio_direction_output(EVM_TWL_GPIO_BASE + 8, 0) < 0) {
+ pr_err("omap3evm-camera: Failed to set GPIO nCAM_VD_EN(%d)
direction\n",
+ EVM_TWL_GPIO_BASE + 8);
+ goto err_8;
+ }
+
+ omap3evm_set_mux(MUX_CAMERA_SENSOR);
+
+
+ return omap3_init_camera(&isp_platform_data);
+
+err_8:
+ gpio_free(EVM_TWL_GPIO_BASE + 8);
+err_2:
+ gpio_free(EVM_TWL_GPIO_BASE + 2);
+err_vdsel:
+ gpio_free(nCAM_VD_SEL);
+err:
+ return -EINVAL;
+}
+
+device_initcall(camera_init);
--
1.7.1
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