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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> | |
fc04ad0e EB |
27 | #include <linux/backlight.h> |
28 | #include <video/platform_lcd.h> | |
a961bf38 EB |
29 | |
30 | #include <asm/mach/arch.h> | |
31 | ||
32 | #include <mach/common.h> | |
e835d88e | 33 | #include <mach/iomux-mx27.h> |
a961bf38 EB |
34 | #include <mach/imxfb.h> |
35 | #include <mach/hardware.h> | |
36 | #include <mach/mmc.h> | |
37 | #include <mach/imx-uart.h> | |
38 | ||
39 | #include "devices.h" | |
40 | ||
41 | static int eukrea_mbimx27_pins[] = { | |
42 | /* UART2 */ | |
43 | PE3_PF_UART2_CTS, | |
44 | PE4_PF_UART2_RTS, | |
45 | PE6_PF_UART2_TXD, | |
46 | PE7_PF_UART2_RXD, | |
47 | /* UART3 */ | |
48 | PE8_PF_UART3_TXD, | |
49 | PE9_PF_UART3_RXD, | |
50 | PE10_PF_UART3_CTS, | |
51 | PE11_PF_UART3_RTS, | |
52 | /* UART4 */ | |
53 | PB26_AF_UART4_RTS, | |
54 | PB28_AF_UART4_TXD, | |
55 | PB29_AF_UART4_CTS, | |
56 | PB31_AF_UART4_RXD, | |
57 | /* SDHC1*/ | |
58 | PE18_PF_SD1_D0, | |
59 | PE19_PF_SD1_D1, | |
60 | PE20_PF_SD1_D2, | |
61 | PE21_PF_SD1_D3, | |
62 | PE22_PF_SD1_CMD, | |
63 | PE23_PF_SD1_CLK, | |
64 | /* display */ | |
65 | PA5_PF_LSCLK, | |
66 | PA6_PF_LD0, | |
67 | PA7_PF_LD1, | |
68 | PA8_PF_LD2, | |
69 | PA9_PF_LD3, | |
70 | PA10_PF_LD4, | |
71 | PA11_PF_LD5, | |
72 | PA12_PF_LD6, | |
73 | PA13_PF_LD7, | |
74 | PA14_PF_LD8, | |
75 | PA15_PF_LD9, | |
76 | PA16_PF_LD10, | |
77 | PA17_PF_LD11, | |
78 | PA18_PF_LD12, | |
79 | PA19_PF_LD13, | |
80 | PA20_PF_LD14, | |
81 | PA21_PF_LD15, | |
82 | PA22_PF_LD16, | |
83 | PA23_PF_LD17, | |
84 | PA28_PF_HSYNC, | |
85 | PA29_PF_VSYNC, | |
86 | PA30_PF_CONTRAST, | |
87 | PA31_PF_OE_ACD, | |
88 | /* SPI1 */ | |
89 | PD28_PF_CSPI1_SS0, | |
90 | PD29_PF_CSPI1_SCLK, | |
91 | PD30_PF_CSPI1_MISO, | |
92 | PD31_PF_CSPI1_MOSI, | |
93 | }; | |
94 | ||
95 | static struct gpio_led gpio_leds[] = { | |
96 | { | |
97 | .name = "led1", | |
98 | .default_trigger = "heartbeat", | |
99 | .active_low = 1, | |
100 | .gpio = GPIO_PORTF | 16, | |
101 | }, | |
102 | { | |
103 | .name = "led2", | |
104 | .default_trigger = "none", | |
105 | .active_low = 1, | |
106 | .gpio = GPIO_PORTF | 19, | |
107 | }, | |
a961bf38 EB |
108 | }; |
109 | ||
110 | static struct gpio_led_platform_data gpio_led_info = { | |
111 | .leds = gpio_leds, | |
112 | .num_leds = ARRAY_SIZE(gpio_leds), | |
113 | }; | |
114 | ||
115 | static struct platform_device leds_gpio = { | |
116 | .name = "leds-gpio", | |
117 | .id = -1, | |
118 | .dev = { | |
119 | .platform_data = &gpio_led_info, | |
120 | }, | |
121 | }; | |
122 | ||
123 | static struct imx_fb_videomode eukrea_mbimx27_modes[] = { | |
124 | { | |
125 | .mode = { | |
4eaad66a | 126 | .name = "CMO-QVGA", |
a961bf38 EB |
127 | .refresh = 60, |
128 | .xres = 320, | |
129 | .yres = 240, | |
130 | .pixclock = 156000, | |
131 | .hsync_len = 30, | |
132 | .left_margin = 38, | |
133 | .right_margin = 20, | |
134 | .vsync_len = 3, | |
135 | .upper_margin = 15, | |
136 | .lower_margin = 4, | |
137 | }, | |
138 | .pcr = 0xFAD08B80, | |
a465242e EB |
139 | .bpp = 16, |
140 | }, { | |
141 | .mode = { | |
142 | .name = "DVI-VGA", | |
143 | .refresh = 60, | |
144 | .xres = 640, | |
145 | .yres = 480, | |
146 | .pixclock = 32000, | |
147 | .hsync_len = 1, | |
148 | .left_margin = 35, | |
149 | .right_margin = 0, | |
150 | .vsync_len = 1, | |
151 | .upper_margin = 7, | |
152 | .lower_margin = 0, | |
153 | }, | |
154 | .pcr = 0xFA208B80, | |
155 | .bpp = 16, | |
156 | }, { | |
157 | .mode = { | |
158 | .name = "DVI-SVGA", | |
159 | .refresh = 60, | |
160 | .xres = 800, | |
161 | .yres = 600, | |
162 | .pixclock = 25000, | |
163 | .hsync_len = 1, | |
164 | .left_margin = 35, | |
165 | .right_margin = 0, | |
166 | .vsync_len = 1, | |
167 | .upper_margin = 7, | |
168 | .lower_margin = 0, | |
169 | }, | |
170 | .pcr = 0xFA208B80, | |
a961bf38 EB |
171 | .bpp = 16, |
172 | }, | |
173 | }; | |
174 | ||
175 | static struct imx_fb_platform_data eukrea_mbimx27_fb_data = { | |
176 | .mode = eukrea_mbimx27_modes, | |
177 | .num_modes = ARRAY_SIZE(eukrea_mbimx27_modes), | |
178 | ||
179 | .pwmr = 0x00A903FF, | |
180 | .lscr1 = 0x00120300, | |
181 | .dmacr = 0x00040060, | |
182 | }; | |
183 | ||
fc04ad0e EB |
184 | static void eukrea_mbimx27_bl_set_intensity(int intensity) |
185 | { | |
186 | if (intensity) | |
187 | gpio_direction_output(GPIO_PORTE | 5, 1); | |
188 | else | |
189 | gpio_direction_output(GPIO_PORTE | 5, 0); | |
190 | } | |
191 | ||
192 | static struct generic_bl_info eukrea_mbimx27_bl_info = { | |
193 | .name = "eukrea_mbimx27-bl", | |
194 | .max_intensity = 0xff, | |
195 | .default_intensity = 0xff, | |
196 | .set_bl_intensity = eukrea_mbimx27_bl_set_intensity, | |
197 | }; | |
198 | ||
199 | static struct platform_device eukrea_mbimx27_bl_dev = { | |
200 | .name = "generic-bl", | |
201 | .id = 1, | |
202 | .dev = { | |
203 | .platform_data = &eukrea_mbimx27_bl_info, | |
204 | }, | |
205 | }; | |
206 | ||
207 | static void eukrea_mbimx27_lcd_power_set(struct plat_lcd_data *pd, | |
208 | unsigned int power) | |
209 | { | |
210 | if (power) | |
211 | gpio_direction_output(GPIO_PORTA | 25, 1); | |
212 | else | |
213 | gpio_direction_output(GPIO_PORTA | 25, 0); | |
214 | } | |
215 | ||
216 | static struct plat_lcd_data eukrea_mbimx27_lcd_power_data = { | |
217 | .set_power = eukrea_mbimx27_lcd_power_set, | |
218 | }; | |
219 | ||
220 | static struct platform_device eukrea_mbimx27_lcd_powerdev = { | |
221 | .name = "platform-lcd", | |
222 | .dev.platform_data = &eukrea_mbimx27_lcd_power_data, | |
223 | }; | |
224 | ||
a961bf38 EB |
225 | static struct imxuart_platform_data uart_pdata[] = { |
226 | { | |
227 | .flags = IMXUART_HAVE_RTSCTS, | |
228 | }, | |
229 | { | |
230 | .flags = IMXUART_HAVE_RTSCTS, | |
231 | }, | |
232 | }; | |
233 | ||
234 | #if defined(CONFIG_TOUCHSCREEN_ADS7846) | |
235 | || defined(CONFIG_TOUCHSCREEN_ADS7846_MODULE) | |
236 | ||
237 | #define ADS7846_PENDOWN (GPIO_PORTD | 25) | |
238 | ||
239 | static void ads7846_dev_init(void) | |
240 | { | |
241 | if (gpio_request(ADS7846_PENDOWN, "ADS7846 pendown") < 0) { | |
242 | printk(KERN_ERR "can't get ads746 pen down GPIO\n"); | |
243 | return; | |
244 | } | |
245 | ||
246 | gpio_direction_input(ADS7846_PENDOWN); | |
247 | } | |
248 | ||
249 | static int ads7846_get_pendown_state(void) | |
250 | { | |
251 | return !gpio_get_value(ADS7846_PENDOWN); | |
252 | } | |
253 | ||
254 | static struct ads7846_platform_data ads7846_config __initdata = { | |
255 | .get_pendown_state = ads7846_get_pendown_state, | |
256 | .keep_vref_on = 1, | |
257 | }; | |
258 | ||
259 | static struct spi_board_info eukrea_mbimx27_spi_board_info[] __initdata = { | |
260 | [0] = { | |
261 | .modalias = "ads7846", | |
262 | .bus_num = 0, | |
263 | .chip_select = 0, | |
264 | .max_speed_hz = 1500000, | |
265 | .irq = IRQ_GPIOD(25), | |
266 | .platform_data = &ads7846_config, | |
267 | .mode = SPI_MODE_2, | |
268 | }, | |
269 | }; | |
270 | ||
271 | static int eukrea_mbimx27_spi_cs[] = {GPIO_PORTD | 28}; | |
272 | ||
273 | static struct spi_imx_master eukrea_mbimx27_spi_0_data = { | |
274 | .chipselect = eukrea_mbimx27_spi_cs, | |
275 | .num_chipselect = ARRAY_SIZE(eukrea_mbimx27_spi_cs), | |
276 | }; | |
277 | #endif | |
278 | ||
279 | static struct platform_device *platform_devices[] __initdata = { | |
280 | &leds_gpio, | |
281 | }; | |
282 | ||
283 | /* | |
284 | * system init for baseboard usage. Will be called by cpuimx27 init. | |
285 | * | |
286 | * Add platform devices present on this baseboard and init | |
287 | * them from CPU side as far as required to use them later on | |
288 | */ | |
289 | void __init eukrea_mbimx27_baseboard_init(void) | |
290 | { | |
291 | mxc_gpio_setup_multiple_pins(eukrea_mbimx27_pins, | |
292 | ARRAY_SIZE(eukrea_mbimx27_pins), "MBIMX27"); | |
293 | ||
294 | mxc_register_device(&mxc_uart_device1, &uart_pdata[0]); | |
295 | mxc_register_device(&mxc_uart_device2, &uart_pdata[1]); | |
296 | ||
297 | mxc_register_device(&mxc_fb_device, &eukrea_mbimx27_fb_data); | |
298 | mxc_register_device(&mxc_sdhc_device0, NULL); | |
299 | ||
300 | #if defined(CONFIG_TOUCHSCREEN_ADS7846) | |
301 | || defined(CONFIG_TOUCHSCREEN_ADS7846_MODULE) | |
302 | /* SPI and ADS7846 Touchscreen controler init */ | |
303 | mxc_gpio_mode(GPIO_PORTD | 28 | GPIO_GPIO | GPIO_OUT); | |
304 | mxc_gpio_mode(GPIO_PORTD | 25 | GPIO_GPIO | GPIO_IN); | |
305 | mxc_register_device(&mxc_spi_device0, &eukrea_mbimx27_spi_0_data); | |
306 | spi_register_board_info(eukrea_mbimx27_spi_board_info, | |
307 | ARRAY_SIZE(eukrea_mbimx27_spi_board_info)); | |
308 | ads7846_dev_init(); | |
309 | #endif | |
310 | ||
311 | /* Leds configuration */ | |
312 | mxc_gpio_mode(GPIO_PORTF | 16 | GPIO_GPIO | GPIO_OUT); | |
313 | mxc_gpio_mode(GPIO_PORTF | 19 | GPIO_GPIO | GPIO_OUT); | |
314 | /* Backlight */ | |
315 | mxc_gpio_mode(GPIO_PORTE | 5 | GPIO_GPIO | GPIO_OUT); | |
fc04ad0e EB |
316 | gpio_request(GPIO_PORTE | 5, "backlight"); |
317 | platform_device_register(&eukrea_mbimx27_bl_dev); | |
318 | /* LCD Reset */ | |
319 | mxc_gpio_mode(GPIO_PORTA | 25 | GPIO_GPIO | GPIO_OUT); | |
320 | gpio_request(GPIO_PORTA | 25, "lcd_enable"); | |
321 | platform_device_register(&eukrea_mbimx27_lcd_powerdev); | |
a961bf38 EB |
322 | |
323 | platform_add_devices(platform_devices, ARRAY_SIZE(platform_devices)); | |
324 | } |