mx31moboard: support for the smartbot baseboard

[pandora-kernel.git] / arch / arm / mach-mx3 / mx31moboard-smartbot.c

diff --git a/arch/arm/mach-mx3/mx31moboard-smartbot.c b/arch/arm/mach-mx3/mx31moboard-smartbot.c
new file mode 100644 (file)
index 0000000..52a69fc
--- /dev/null
+++ b/arch/arm/mach-mx3/mx31moboard-smartbot.c
@@ -0,0 +1,162 @@
+/*
+ * Copyright (C) 2009 Valentin Longchamp, EPFL Mobots group
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * 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., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ */
+
+#include <linux/delay.h>
+#include <linux/gpio.h>
+#include <linux/init.h>
+#include <linux/interrupt.h>
+#include <linux/i2c.h>
+#include <linux/platform_device.h>
+#include <linux/types.h>
+
+#include <mach/common.h>
+#include <mach/hardware.h>
+#include <mach/imx-uart.h>
+#include <mach/iomux-mx3.h>
+
+#include <media/soc_camera.h>
+
+#include "devices.h"
+
+static unsigned int smartbot_pins[] = {
+       /* UART1 */
+       MX31_PIN_CTS2__CTS2, MX31_PIN_RTS2__RTS2,
+       MX31_PIN_TXD2__TXD2, MX31_PIN_RXD2__RXD2,
+       /* CSI */
+       MX31_PIN_CSI_D4__CSI_D4, MX31_PIN_CSI_D5__CSI_D5,
+       MX31_PIN_CSI_D6__CSI_D6, MX31_PIN_CSI_D7__CSI_D7,
+       MX31_PIN_CSI_D8__CSI_D8, MX31_PIN_CSI_D9__CSI_D9,
+       MX31_PIN_CSI_D10__CSI_D10, MX31_PIN_CSI_D11__CSI_D11,
+       MX31_PIN_CSI_D12__CSI_D12, MX31_PIN_CSI_D13__CSI_D13,
+       MX31_PIN_CSI_D14__CSI_D14, MX31_PIN_CSI_D15__CSI_D15,
+       MX31_PIN_CSI_HSYNC__CSI_HSYNC, MX31_PIN_CSI_MCLK__CSI_MCLK,
+       MX31_PIN_CSI_PIXCLK__CSI_PIXCLK, MX31_PIN_CSI_VSYNC__CSI_VSYNC,
+       MX31_PIN_GPIO3_0__GPIO3_0, MX31_PIN_GPIO3_1__GPIO3_1,
+       /* ENABLES */
+       MX31_PIN_DTR_DCE1__GPIO2_8, MX31_PIN_DSR_DCE1__GPIO2_9,
+       MX31_PIN_RI_DCE1__GPIO2_10, MX31_PIN_DCD_DCE1__GPIO2_11,
+};
+
+static struct imxuart_platform_data uart_pdata = {
+       .flags = IMXUART_HAVE_RTSCTS,
+};
+
+#define CAM_POWER      IOMUX_TO_GPIO(MX31_PIN_GPIO3_1)
+#define CAM_RST_B      IOMUX_TO_GPIO(MX31_PIN_GPIO3_0)
+
+static int smartbot_cam_power(struct device *dev, int on)
+{
+       gpio_set_value(CAM_POWER, !on);
+       return 0;
+}
+
+static int smartbot_cam_reset(struct device *dev)
+{
+       gpio_set_value(CAM_RST_B, 0);
+       udelay(100);
+       gpio_set_value(CAM_RST_B, 1);
+       return 0;
+}
+
+static struct i2c_board_info smartbot_i2c_devices[] = {
+       {
+               I2C_BOARD_INFO("mt9t031", 0x5d),
+       },
+};
+
+static struct soc_camera_link base_iclink = {
+       .bus_id         = 0,            /* Must match with the camera ID */
+       .power          = smartbot_cam_power,
+       .reset          = smartbot_cam_reset,
+       .board_info     = &smartbot_i2c_devices[0],
+       .i2c_adapter_id = 0,
+       .module_name    = "mt9t031",
+};
+
+static struct platform_device smartbot_camera[] = {
+       {
+               .name   = "soc-camera-pdrv",
+               .id     = 0,
+               .dev    = {
+                       .platform_data = &base_iclink,
+               },
+       },
+};
+
+static struct platform_device *smartbot_cameras[] __initdata = {
+       &smartbot_camera[0],
+};
+
+static int __init smartbot_cam_init(void)
+{
+       int ret = gpio_request(CAM_RST_B, "cam-reset");
+       if (ret)
+               return ret;
+       gpio_direction_output(CAM_RST_B, 1);
+       ret = gpio_request(CAM_POWER, "cam-standby");
+       if (ret)
+               return ret;
+       gpio_direction_output(CAM_POWER, 0);
+
+       return 0;
+}
+
+#define POWER_EN IOMUX_TO_GPIO(MX31_PIN_DTR_DCE1)
+#define DSPIC_RST_B IOMUX_TO_GPIO(MX31_PIN_DSR_DCE1)
+#define TRSLAT_RST_B IOMUX_TO_GPIO(MX31_PIN_RI_DCE1)
+#define SEL3 IOMUX_TO_GPIO(MX31_PIN_DCD_DCE1)
+
+static void smartbot_resets_init(void)
+{
+       if (!gpio_request(POWER_EN, "power-enable")) {
+               gpio_direction_output(POWER_EN, 0);
+               gpio_export(POWER_EN, false);
+       }
+
+       if (!gpio_request(DSPIC_RST_B, "dspic-rst")) {
+               gpio_direction_output(DSPIC_RST_B, 0);
+               gpio_export(DSPIC_RST_B, false);
+       }
+
+       if (!gpio_request(TRSLAT_RST_B, "translator-rst")) {
+               gpio_direction_output(TRSLAT_RST_B, 0);
+               gpio_export(TRSLAT_RST_B, false);
+       }
+
+       if (!gpio_request(SEL3, "sel3")) {
+               gpio_direction_input(SEL3);
+               gpio_export(SEL3, true);
+       }
+}
+/*
+ * system init for baseboard usage. Will be called by mx31moboard init.
+ */
+void __init mx31moboard_smartbot_init(void)
+{
+       printk(KERN_INFO "Initializing mx31smartbot peripherals\n");
+
+       mxc_iomux_setup_multiple_pins(smartbot_pins, ARRAY_SIZE(smartbot_pins),
+               "smartbot");
+
+       mxc_register_device(&mxc_uart_device1, &uart_pdata);
+
+       smartbot_resets_init();
+
+       smartbot_cam_init();
+       platform_add_devices(smartbot_cameras, ARRAY_SIZE(smartbot_cameras));
+}