/arch/arm/mach-mx3/mx31moboard-smartbot.c

  1/*
  2 * Copyright (C) 2009 Valentin Longchamp, EPFL Mobots group
  3 *
  4 * This program is free software; you can redistribute it and/or modify
  5 * it under the terms of the GNU General Public License as published by
  6 * the Free Software Foundation; either version 2 of the License, or
  7 * (at your option) any later version.
  8 *
  9 * This program is distributed in the hope that it will be useful,
 10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 12 * GNU General Public License for more details.
 13 *
 14 * You should have received a copy of the GNU General Public License
 15 * along with this program; if not, write to the Free Software
 16 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 17 */
 18
 19#include <linux/delay.h>
 20#include <linux/gpio.h>
 21#include <linux/init.h>
 22#include <linux/interrupt.h>
 23#include <linux/i2c.h>
 24#include <linux/platform_device.h>
 25#include <linux/types.h>
 26#include <linux/fsl_devices.h>
 27
 28#include <linux/usb/otg.h>
 29#include <linux/usb/ulpi.h>
 30
 31#include <mach/common.h>
 32#include <mach/hardware.h>
 33#include <mach/imx-uart.h>
 34#include <mach/iomux-mx3.h>
 35#include <mach/board-mx31moboard.h>
 36#include <mach/mxc_ehci.h>
 37#include <mach/ulpi.h>
 38
 39#include <media/soc_camera.h>
 40
 41#include "devices.h"
 42
 43static unsigned int smartbot_pins[] = {
 44	/* UART1 */
 45	MX31_PIN_CTS2__CTS2, MX31_PIN_RTS2__RTS2,
 46	MX31_PIN_TXD2__TXD2, MX31_PIN_RXD2__RXD2,
 47	/* CSI */
 48	MX31_PIN_CSI_D4__CSI_D4, MX31_PIN_CSI_D5__CSI_D5,
 49	MX31_PIN_CSI_D6__CSI_D6, MX31_PIN_CSI_D7__CSI_D7,
 50	MX31_PIN_CSI_D8__CSI_D8, MX31_PIN_CSI_D9__CSI_D9,
 51	MX31_PIN_CSI_D10__CSI_D10, MX31_PIN_CSI_D11__CSI_D11,
 52	MX31_PIN_CSI_D12__CSI_D12, MX31_PIN_CSI_D13__CSI_D13,
 53	MX31_PIN_CSI_D14__CSI_D14, MX31_PIN_CSI_D15__CSI_D15,
 54	MX31_PIN_CSI_HSYNC__CSI_HSYNC, MX31_PIN_CSI_MCLK__CSI_MCLK,
 55	MX31_PIN_CSI_PIXCLK__CSI_PIXCLK, MX31_PIN_CSI_VSYNC__CSI_VSYNC,
 56	MX31_PIN_GPIO3_0__GPIO3_0, MX31_PIN_GPIO3_1__GPIO3_1,
 57	/* ENABLES */
 58	MX31_PIN_DTR_DCE1__GPIO2_8, MX31_PIN_DSR_DCE1__GPIO2_9,
 59	MX31_PIN_RI_DCE1__GPIO2_10, MX31_PIN_DCD_DCE1__GPIO2_11,
 60};
 61
 62static struct imxuart_platform_data uart_pdata = {
 63	.flags = IMXUART_HAVE_RTSCTS,
 64};
 65
 66#define CAM_POWER	IOMUX_TO_GPIO(MX31_PIN_GPIO3_1)
 67#define CAM_RST_B	IOMUX_TO_GPIO(MX31_PIN_GPIO3_0)
 68
 69static int smartbot_cam_power(struct device *dev, int on)
 70{
 71	gpio_set_value(CAM_POWER, !on);
 72	return 0;
 73}
 74
 75static int smartbot_cam_reset(struct device *dev)
 76{
 77	gpio_set_value(CAM_RST_B, 0);
 78	udelay(100);
 79	gpio_set_value(CAM_RST_B, 1);
 80	return 0;
 81}
 82
 83static struct i2c_board_info smartbot_i2c_devices[] = {
 84	{
 85		I2C_BOARD_INFO("mt9t031", 0x5d),
 86	},
 87};
 88
 89static struct soc_camera_link base_iclink = {
 90	.bus_id		= 0,		/* Must match with the camera ID */
 91	.power		= smartbot_cam_power,
 92	.reset		= smartbot_cam_reset,
 93	.board_info	= &smartbot_i2c_devices[0],
 94	.i2c_adapter_id	= 0,
 95	.module_name	= "mt9t031",
 96};
 97
 98static struct platform_device smartbot_camera[] = {
 99	{
100		.name	= "soc-camera-pdrv",
101		.id	= 0,
102		.dev	= {
103			.platform_data = &base_iclink,
104		},
105	},
106};
107
108static struct platform_device *smartbot_cameras[] __initdata = {
109	&smartbot_camera[0],
110};
111
112static int __init smartbot_cam_init(void)
113{
114	int ret = gpio_request(CAM_RST_B, "cam-reset");
115	if (ret)
116		return ret;
117	gpio_direction_output(CAM_RST_B, 1);
118	ret = gpio_request(CAM_POWER, "cam-standby");
119	if (ret)
120		return ret;
121	gpio_direction_output(CAM_POWER, 0);
122
123	return 0;
124}
125
126static struct fsl_usb2_platform_data usb_pdata = {
127	.operating_mode	= FSL_USB2_DR_DEVICE,
128	.phy_mode	= FSL_USB2_PHY_ULPI,
129};
130
131#if defined(CONFIG_USB_ULPI)
132
133static struct mxc_usbh_platform_data otg_host_pdata = {
134	.portsc = MXC_EHCI_MODE_ULPI | MXC_EHCI_UTMI_8BIT,
135	.flags	= MXC_EHCI_POWER_PINS_ENABLED,
136};
137
138static int __init smartbot_otg_host_init(void)
139{
140	otg_host_pdata.otg = otg_ulpi_create(&mxc_ulpi_access_ops,
141			USB_OTG_DRV_VBUS | USB_OTG_DRV_VBUS_EXT);
142
143	return mxc_register_device(&mxc_otg_host, &otg_host_pdata);
144}
145#else
146static inline int smartbot_otg_host_init(void) { return 0; }
147#endif
148
149#define POWER_EN IOMUX_TO_GPIO(MX31_PIN_DTR_DCE1)
150#define DSPIC_RST_B IOMUX_TO_GPIO(MX31_PIN_DSR_DCE1)
151#define TRSLAT_RST_B IOMUX_TO_GPIO(MX31_PIN_RI_DCE1)
152#define TRSLAT_SRC_CHOICE IOMUX_TO_GPIO(MX31_PIN_DCD_DCE1)
153
154static void smartbot_resets_init(void)
155{
156	if (!gpio_request(POWER_EN, "power-enable")) {
157		gpio_direction_output(POWER_EN, 0);
158		gpio_export(POWER_EN, false);
159	}
160
161	if (!gpio_request(DSPIC_RST_B, "dspic-rst")) {
162		gpio_direction_output(DSPIC_RST_B, 0);
163		gpio_export(DSPIC_RST_B, false);
164	}
165
166	if (!gpio_request(TRSLAT_RST_B, "translator-rst")) {
167		gpio_direction_output(TRSLAT_RST_B, 0);
168		gpio_export(TRSLAT_RST_B, false);
169	}
170
171	if (!gpio_request(TRSLAT_SRC_CHOICE, "translator-src-choice")) {
172		gpio_direction_output(TRSLAT_SRC_CHOICE, 0);
173		gpio_export(TRSLAT_SRC_CHOICE, false);
174	}
175}
176/*
177 * system init for baseboard usage. Will be called by mx31moboard init.
178 */
179void __init mx31moboard_smartbot_init(int board)
180{
181	printk(KERN_INFO "Initializing mx31smartbot peripherals\n");
182
183	mxc_iomux_setup_multiple_pins(smartbot_pins, ARRAY_SIZE(smartbot_pins),
184		"smartbot");
185
186	mxc_register_device(&mxc_uart_device1, &uart_pdata);
187
188
189	switch (board) {
190	case MX31SMARTBOT:
191		mxc_register_device(&mxc_otg_udc_device, &usb_pdata);
192		break;
193	case MX31EYEBOT:
194		smartbot_otg_host_init();
195		break;
196	default:
197		printk(KERN_WARNING "Unknown board %d, USB OTG not initialized",
198			board);
199	}
200
201	smartbot_resets_init();
202
203	smartbot_cam_init();
204	platform_add_devices(smartbot_cameras, ARRAY_SIZE(smartbot_cameras));
205}