1/*
  2 * Copyright (C) 2010 Eric Benard - eric@eukrea.com
  3 *
  4 * Based on pcm970-baseboard.c which is :
  5 * Copyright (C) 2008 Juergen Beisert (kernel@pengutronix.de)
  6 *
  7 * This program is free software; you can redistribute it and/or
  8 * modify it under the terms of the GNU General Public License
  9 * as published by the Free Software Foundation; either version 2
 10 * of the License, or (at your option) any later version.
 11 * This program is distributed in the hope that it will be useful,
 12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 14 * GNU General Public License for more details.
 15 *
 16 * You should have received a copy of the GNU General Public License
 17 * along with this program; if not, write to the Free Software
 18 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
 19 * MA 02110-1301, USA.
 20 */
 21
 22#include <linux/types.h>
 23#include <linux/init.h>
 24
 25#include <linux/gpio.h>
 26#include <linux/interrupt.h>
 27#include <linux/leds.h>
 28#include <linux/platform_device.h>
 29#include <linux/input.h>
 30#include <linux/i2c.h>
 31#include <video/platform_lcd.h>
 32#include <linux/backlight.h>
 33
 34#include <asm/mach-types.h>
 35#include <asm/mach/arch.h>
 36#include <asm/mach/time.h>
 37#include <asm/mach/map.h>
 38
 39#include <mach/hardware.h>
 40#include <mach/common.h>
 41#include <mach/iomux-mx51.h>
 42
 43#include "devices-imx51.h"
 44
 45static iomux_v3_cfg_t eukrea_mbimxsd51_pads[] = {
 46	/* LED */
 47	MX51_PAD_NANDF_D10__GPIO3_30,
 48	/* SWITCH */
 49	NEW_PAD_CTRL(MX51_PAD_NANDF_D9__GPIO3_31, PAD_CTL_PUS_22K_UP |
 50			PAD_CTL_PKE | PAD_CTL_SRE_FAST |
 51			PAD_CTL_DSE_HIGH | PAD_CTL_PUE | PAD_CTL_HYS),
 52	/* UART2 */
 53	MX51_PAD_UART2_RXD__UART2_RXD,
 54	MX51_PAD_UART2_TXD__UART2_TXD,
 55	/* UART 3 */
 56	MX51_PAD_UART3_RXD__UART3_RXD,
 57	MX51_PAD_UART3_TXD__UART3_TXD,
 58	MX51_PAD_KEY_COL4__UART3_RTS,
 59	MX51_PAD_KEY_COL5__UART3_CTS,
 60	/* SD */
 61	MX51_PAD_SD1_CMD__SD1_CMD,
 62	MX51_PAD_SD1_CLK__SD1_CLK,
 63	MX51_PAD_SD1_DATA0__SD1_DATA0,
 64	MX51_PAD_SD1_DATA1__SD1_DATA1,
 65	MX51_PAD_SD1_DATA2__SD1_DATA2,
 66	MX51_PAD_SD1_DATA3__SD1_DATA3,
 67	/* SD1 CD */
 68	NEW_PAD_CTRL(MX51_PAD_GPIO1_0__SD1_CD, PAD_CTL_PUS_22K_UP |
 69			PAD_CTL_PKE | PAD_CTL_SRE_FAST |
 70			PAD_CTL_DSE_HIGH | PAD_CTL_PUE | PAD_CTL_HYS),
 71	/* SSI */
 72	MX51_PAD_AUD3_BB_TXD__AUD3_TXD,
 73	MX51_PAD_AUD3_BB_RXD__AUD3_RXD,
 74	MX51_PAD_AUD3_BB_CK__AUD3_TXC,
 75	MX51_PAD_AUD3_BB_FS__AUD3_TXFS,
 76	/* LCD Backlight */
 77	MX51_PAD_DI1_D1_CS__GPIO3_4,
 78	/* LCD RST */
 79	MX51_PAD_CSI1_D9__GPIO3_13,
 80};
 81
 82#define GPIO_LED1	IMX_GPIO_NR(3, 30)
 83#define GPIO_SWITCH1	IMX_GPIO_NR(3, 31)
 84#define GPIO_LCDRST	IMX_GPIO_NR(3, 13)
 85#define GPIO_LCDBL	IMX_GPIO_NR(3, 4)
 86
 87static void eukrea_mbimxsd51_lcd_power_set(struct plat_lcd_data *pd,
 88				   unsigned int power)
 89{
 90	if (power)
 91		gpio_direction_output(GPIO_LCDRST, 1);
 92	else
 93		gpio_direction_output(GPIO_LCDRST, 0);
 94}
 95
 96static struct plat_lcd_data eukrea_mbimxsd51_lcd_power_data = {
 97	.set_power		= eukrea_mbimxsd51_lcd_power_set,
 98};
 99
100static struct platform_device eukrea_mbimxsd51_lcd_powerdev = {
101	.name			= "platform-lcd",
102	.dev.platform_data	= &eukrea_mbimxsd51_lcd_power_data,
103};
104
105static void eukrea_mbimxsd51_bl_set_intensity(int intensity)
106{
107	if (intensity)
108		gpio_direction_output(GPIO_LCDBL, 1);
109	else
110		gpio_direction_output(GPIO_LCDBL, 0);
111}
112
113static struct generic_bl_info eukrea_mbimxsd51_bl_info = {
114	.name			= "eukrea_mbimxsd51-bl",
115	.max_intensity		= 0xff,
116	.default_intensity	= 0xff,
117	.set_bl_intensity	= eukrea_mbimxsd51_bl_set_intensity,
118};
119
120static struct platform_device eukrea_mbimxsd51_bl_dev = {
121	.name			= "generic-bl",
122	.id			= 1,
123	.dev = {
124		.platform_data	= &eukrea_mbimxsd51_bl_info,
125	},
126};
127
128static const struct gpio_led eukrea_mbimxsd51_leds[] __initconst = {
129	{
130		.name			= "led1",
131		.default_trigger	= "heartbeat",
132		.active_low		= 1,
133		.gpio			= GPIO_LED1,
134	},
135};
136
137static const struct gpio_led_platform_data
138		eukrea_mbimxsd51_led_info __initconst = {
139	.leds		= eukrea_mbimxsd51_leds,
140	.num_leds	= ARRAY_SIZE(eukrea_mbimxsd51_leds),
141};
142
143static struct gpio_keys_button eukrea_mbimxsd51_gpio_buttons[] = {
144	{
145		.gpio		= GPIO_SWITCH1,
146		.code		= BTN_0,
147		.desc		= "BP1",
148		.active_low	= 1,
149		.wakeup		= 1,
150	},
151};
152
153static const struct gpio_keys_platform_data
154		eukrea_mbimxsd51_button_data __initconst = {
155	.buttons	= eukrea_mbimxsd51_gpio_buttons,
156	.nbuttons	= ARRAY_SIZE(eukrea_mbimxsd51_gpio_buttons),
157};
158
159static const struct imxuart_platform_data uart_pdata __initconst = {
160	.flags = IMXUART_HAVE_RTSCTS,
161};
162
163static struct i2c_board_info eukrea_mbimxsd51_i2c_devices[] = {
164	{
165		I2C_BOARD_INFO("tlv320aic23", 0x1a),
166	},
167};
168
169static const
170struct imx_ssi_platform_data eukrea_mbimxsd51_ssi_pdata __initconst = {
171	.flags = IMX_SSI_SYN | IMX_SSI_NET | IMX_SSI_USE_I2S_SLAVE,
172};
173
174static int screen_type;
175
176static int __init eukrea_mbimxsd51_screen_type(char *options)
177{
178	if (!strcmp(options, "dvi"))
179		screen_type = 1;
180	else if (!strcmp(options, "tft"))
181		screen_type = 0;
182
183	return 0;
184}
185__setup("screen_type=", eukrea_mbimxsd51_screen_type);
186
187/*
188 * system init for baseboard usage. Will be called by cpuimx51sd init.
189 *
190 * Add platform devices present on this baseboard and init
191 * them from CPU side as far as required to use them later on
192 */
193void __init eukrea_mbimxsd51_baseboard_init(void)
194{
195	if (mxc_iomux_v3_setup_multiple_pads(eukrea_mbimxsd51_pads,
196			ARRAY_SIZE(eukrea_mbimxsd51_pads)))
197		printk(KERN_ERR "error setting mbimxsd pads !\n");
198
199	imx51_add_imx_uart(1, NULL);
200	imx51_add_imx_uart(2, &uart_pdata);
201
202	imx51_add_sdhci_esdhc_imx(0, NULL);
203
204	imx51_add_imx_ssi(0, &eukrea_mbimxsd51_ssi_pdata);
205
206	gpio_request(GPIO_LED1, "LED1");
207	gpio_direction_output(GPIO_LED1, 1);
208	gpio_free(GPIO_LED1);
209
210	gpio_request(GPIO_SWITCH1, "SWITCH1");
211	gpio_direction_input(GPIO_SWITCH1);
212	gpio_free(GPIO_SWITCH1);
213
214	gpio_request(GPIO_LCDRST, "LCDRST");
215	gpio_direction_output(GPIO_LCDRST, 0);
216	gpio_request(GPIO_LCDBL, "LCDBL");
217	gpio_direction_output(GPIO_LCDBL, 0);
218	if (!screen_type) {
219		platform_device_register(&eukrea_mbimxsd51_bl_dev);
220		platform_device_register(&eukrea_mbimxsd51_lcd_powerdev);
221	} else {
222		gpio_free(GPIO_LCDRST);
223		gpio_free(GPIO_LCDBL);
224	}
225
226	i2c_register_board_info(0, eukrea_mbimxsd51_i2c_devices,
227				ARRAY_SIZE(eukrea_mbimxsd51_i2c_devices));
228
229	gpio_led_register_device(-1, &eukrea_mbimxsd51_led_info);
230	imx_add_gpio_keys(&eukrea_mbimxsd51_button_data);
231}