Merge branch 'devel' of master.kernel.org:/home/rmk/linux-2.6-arm
[linux-2.6.git] / arch / arm / mach-mx2 / eukrea_mbimx27-baseboard.c
1 /*
2  * Copyright (C) 2009 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/gpio.h>
23 #include <linux/irq.h>
24 #include <linux/platform_device.h>
25 #include <linux/spi/spi.h>
26 #include <linux/spi/ads7846.h>
27
28 #include <asm/mach/arch.h>
29
30 #include <mach/common.h>
31 #include <mach/iomux.h>
32 #include <mach/imxfb.h>
33 #include <mach/hardware.h>
34 #include <mach/mmc.h>
35 #include <mach/imx-uart.h>
36
37 #include "devices.h"
38
39 static int eukrea_mbimx27_pins[] = {
40         /* UART2 */
41         PE3_PF_UART2_CTS,
42         PE4_PF_UART2_RTS,
43         PE6_PF_UART2_TXD,
44         PE7_PF_UART2_RXD,
45         /* UART3 */
46         PE8_PF_UART3_TXD,
47         PE9_PF_UART3_RXD,
48         PE10_PF_UART3_CTS,
49         PE11_PF_UART3_RTS,
50         /* UART4 */
51         PB26_AF_UART4_RTS,
52         PB28_AF_UART4_TXD,
53         PB29_AF_UART4_CTS,
54         PB31_AF_UART4_RXD,
55         /* SDHC1*/
56         PE18_PF_SD1_D0,
57         PE19_PF_SD1_D1,
58         PE20_PF_SD1_D2,
59         PE21_PF_SD1_D3,
60         PE22_PF_SD1_CMD,
61         PE23_PF_SD1_CLK,
62         /* display */
63         PA5_PF_LSCLK,
64         PA6_PF_LD0,
65         PA7_PF_LD1,
66         PA8_PF_LD2,
67         PA9_PF_LD3,
68         PA10_PF_LD4,
69         PA11_PF_LD5,
70         PA12_PF_LD6,
71         PA13_PF_LD7,
72         PA14_PF_LD8,
73         PA15_PF_LD9,
74         PA16_PF_LD10,
75         PA17_PF_LD11,
76         PA18_PF_LD12,
77         PA19_PF_LD13,
78         PA20_PF_LD14,
79         PA21_PF_LD15,
80         PA22_PF_LD16,
81         PA23_PF_LD17,
82         PA28_PF_HSYNC,
83         PA29_PF_VSYNC,
84         PA30_PF_CONTRAST,
85         PA31_PF_OE_ACD,
86         /* SPI1 */
87         PD28_PF_CSPI1_SS0,
88         PD29_PF_CSPI1_SCLK,
89         PD30_PF_CSPI1_MISO,
90         PD31_PF_CSPI1_MOSI,
91 };
92
93 static struct gpio_led gpio_leds[] = {
94         {
95                 .name                   = "led1",
96                 .default_trigger        = "heartbeat",
97                 .active_low             = 1,
98                 .gpio                   = GPIO_PORTF | 16,
99         },
100         {
101                 .name                   = "led2",
102                 .default_trigger        = "none",
103                 .active_low             = 1,
104                 .gpio                   = GPIO_PORTF | 19,
105         },
106         {
107                 .name                   = "backlight",
108                 .default_trigger        = "backlight",
109                 .active_low             = 0,
110                 .gpio                   = GPIO_PORTE | 5,
111         },
112 };
113
114 static struct gpio_led_platform_data gpio_led_info = {
115         .leds           = gpio_leds,
116         .num_leds       = ARRAY_SIZE(gpio_leds),
117 };
118
119 static struct platform_device leds_gpio = {
120         .name   = "leds-gpio",
121         .id     = -1,
122         .dev    = {
123                 .platform_data  = &gpio_led_info,
124         },
125 };
126
127 static struct imx_fb_videomode eukrea_mbimx27_modes[] = {
128         {
129                 .mode = {
130                         .name           = "CMO-QGVA",
131                         .refresh        = 60,
132                         .xres           = 320,
133                         .yres           = 240,
134                         .pixclock       = 156000,
135                         .hsync_len      = 30,
136                         .left_margin    = 38,
137                         .right_margin   = 20,
138                         .vsync_len      = 3,
139                         .upper_margin   = 15,
140                         .lower_margin   = 4,
141                 },
142                 .pcr            = 0xFAD08B80,
143                 .bpp            = 16,
144         },
145 };
146
147 static struct imx_fb_platform_data eukrea_mbimx27_fb_data = {
148         .mode = eukrea_mbimx27_modes,
149         .num_modes = ARRAY_SIZE(eukrea_mbimx27_modes),
150
151         .pwmr           = 0x00A903FF,
152         .lscr1          = 0x00120300,
153         .dmacr          = 0x00040060,
154 };
155
156 static struct imxuart_platform_data uart_pdata[] = {
157         {
158                 .flags = IMXUART_HAVE_RTSCTS,
159         },
160         {
161                 .flags = IMXUART_HAVE_RTSCTS,
162         },
163 };
164
165 #if defined(CONFIG_TOUCHSCREEN_ADS7846)
166         || defined(CONFIG_TOUCHSCREEN_ADS7846_MODULE)
167
168 #define ADS7846_PENDOWN (GPIO_PORTD | 25)
169
170 static void ads7846_dev_init(void)
171 {
172         if (gpio_request(ADS7846_PENDOWN, "ADS7846 pendown") < 0) {
173                 printk(KERN_ERR "can't get ads746 pen down GPIO\n");
174                 return;
175         }
176
177         gpio_direction_input(ADS7846_PENDOWN);
178 }
179
180 static int ads7846_get_pendown_state(void)
181 {
182         return !gpio_get_value(ADS7846_PENDOWN);
183 }
184
185 static struct ads7846_platform_data ads7846_config __initdata = {
186         .get_pendown_state      = ads7846_get_pendown_state,
187         .keep_vref_on           = 1,
188 };
189
190 static struct spi_board_info eukrea_mbimx27_spi_board_info[] __initdata = {
191         [0] = {
192                 .modalias       = "ads7846",
193                 .bus_num        = 0,
194                 .chip_select    = 0,
195                 .max_speed_hz   = 1500000,
196                 .irq            = IRQ_GPIOD(25),
197                 .platform_data  = &ads7846_config,
198                 .mode           = SPI_MODE_2,
199         },
200 };
201
202 static int eukrea_mbimx27_spi_cs[] = {GPIO_PORTD | 28};
203
204 static struct spi_imx_master eukrea_mbimx27_spi_0_data = {
205         .chipselect     = eukrea_mbimx27_spi_cs,
206         .num_chipselect = ARRAY_SIZE(eukrea_mbimx27_spi_cs),
207 };
208 #endif
209
210 static struct platform_device *platform_devices[] __initdata = {
211         &leds_gpio,
212 };
213
214 /*
215  * system init for baseboard usage. Will be called by cpuimx27 init.
216  *
217  * Add platform devices present on this baseboard and init
218  * them from CPU side as far as required to use them later on
219  */
220 void __init eukrea_mbimx27_baseboard_init(void)
221 {
222         mxc_gpio_setup_multiple_pins(eukrea_mbimx27_pins,
223                 ARRAY_SIZE(eukrea_mbimx27_pins), "MBIMX27");
224
225         mxc_register_device(&mxc_uart_device1, &uart_pdata[0]);
226         mxc_register_device(&mxc_uart_device2, &uart_pdata[1]);
227
228         mxc_register_device(&mxc_fb_device, &eukrea_mbimx27_fb_data);
229         mxc_register_device(&mxc_sdhc_device0, NULL);
230
231 #if defined(CONFIG_TOUCHSCREEN_ADS7846)
232         || defined(CONFIG_TOUCHSCREEN_ADS7846_MODULE)
233         /* SPI and ADS7846 Touchscreen controler init */
234         mxc_gpio_mode(GPIO_PORTD | 28 | GPIO_GPIO | GPIO_OUT);
235         mxc_gpio_mode(GPIO_PORTD | 25 | GPIO_GPIO | GPIO_IN);
236         mxc_register_device(&mxc_spi_device0, &eukrea_mbimx27_spi_0_data);
237         spi_register_board_info(eukrea_mbimx27_spi_board_info,
238                         ARRAY_SIZE(eukrea_mbimx27_spi_board_info));
239         ads7846_dev_init();
240 #endif
241
242         /* Leds configuration */
243         mxc_gpio_mode(GPIO_PORTF | 16 | GPIO_GPIO | GPIO_OUT);
244         mxc_gpio_mode(GPIO_PORTF | 19 | GPIO_GPIO | GPIO_OUT);
245         /* Backlight */
246         mxc_gpio_mode(GPIO_PORTE | 5 | GPIO_GPIO | GPIO_OUT);
247
248         platform_add_devices(platform_devices, ARRAY_SIZE(platform_devices));
249 }