diff options
Diffstat (limited to 'kernel/arch/arm/mach-imx/mx31moboard-smartbot.c')
| -rw-r--r-- | kernel/arch/arm/mach-imx/mx31moboard-smartbot.c | 207 |
1 files changed, 207 insertions, 0 deletions
diff --git a/kernel/arch/arm/mach-imx/mx31moboard-smartbot.c b/kernel/arch/arm/mach-imx/mx31moboard-smartbot.c new file mode 100644 index 000000000..89fc35a64 --- /dev/null +++ b/kernel/arch/arm/mach-imx/mx31moboard-smartbot.c @@ -0,0 +1,207 @@ +/* + * 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. + */ + +#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 <linux/usb/otg.h> +#include <linux/usb/ulpi.h> + +#include <media/soc_camera.h> + +#include "board-mx31moboard.h" +#include "common.h" +#include "devices-imx31.h" +#include "ehci.h" +#include "hardware.h" +#include "iomux-mx3.h" +#include "ulpi.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 const struct imxuart_platform_data uart_pdata __initconst = { + .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, +}; + +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; +} + +static const struct fsl_usb2_platform_data usb_pdata __initconst = { + .operating_mode = FSL_USB2_DR_DEVICE, + .phy_mode = FSL_USB2_PHY_ULPI, +}; + +#if defined(CONFIG_USB_ULPI) + +static int smartbot_otg_init(struct platform_device *pdev) +{ + return mx31_initialize_usb_hw(pdev->id, MXC_EHCI_POWER_PINS_ENABLED); +} + +static struct mxc_usbh_platform_data otg_host_pdata __initdata = { + .init = smartbot_otg_init, + .portsc = MXC_EHCI_MODE_ULPI | MXC_EHCI_UTMI_8BIT, +}; + +static int __init smartbot_otg_host_init(void) +{ + struct platform_device *pdev; + + otg_host_pdata.otg = imx_otg_ulpi_create(ULPI_OTG_DRVVBUS | + ULPI_OTG_DRVVBUS_EXT); + if (!otg_host_pdata.otg) + return -ENODEV; + + pdev = imx31_add_mxc_ehci_otg(&otg_host_pdata); + + return PTR_ERR_OR_ZERO(pdev); +} +#else +static inline int smartbot_otg_host_init(void) { return 0; } +#endif + +#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 TRSLAT_SRC_CHOICE 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(TRSLAT_SRC_CHOICE, "translator-src-choice")) { + gpio_direction_output(TRSLAT_SRC_CHOICE, 0); + gpio_export(TRSLAT_SRC_CHOICE, false); + } +} +/* + * system init for baseboard usage. Will be called by mx31moboard init. + */ +void __init mx31moboard_smartbot_init(int board) +{ + printk(KERN_INFO "Initializing mx31smartbot peripherals\n"); + + mxc_iomux_setup_multiple_pins(smartbot_pins, ARRAY_SIZE(smartbot_pins), + "smartbot"); + + imx31_add_imx_uart1(&uart_pdata); + + switch (board) { + case MX31SMARTBOT: + imx31_add_fsl_usb2_udc(&usb_pdata); + break; + case MX31EYEBOT: + smartbot_otg_host_init(); + break; + default: + printk(KERN_WARNING "Unknown board %d, USB OTG not initialized", + board); + } + + smartbot_resets_init(); + + smartbot_cam_init(); + platform_add_devices(smartbot_cameras, ARRAY_SIZE(smartbot_cameras)); +} |