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a961bf38 EB |
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> | |
e835d88e | 31 | #include <mach/iomux-mx27.h> |
a961bf38 EB |
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 | } |