1 /*
2 * Copyright (C) 2009-2010 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/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 #include <linux/backlight.h>
28 #include <video/platform_lcd.h>
29
30 #include <asm/mach/arch.h>
31
32 #include <mach/common.h>
33 #include <mach/iomux-mx27.h>
34 #include <mach/hardware.h>
35 #include <mach/audmux.h>
36
37 #include "devices-imx27.h"
38
39 static const int eukrea_mbimx27_pins[] __initconst = {
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 #if !defined(MACH_EUKREA_CPUIMX27_USEUART4)
52 PB26_AF_UART4_RTS,
53 PB28_AF_UART4_TXD,
54 PB29_AF_UART4_CTS,
55 PB31_AF_UART4_RXD,
56 #endif
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 PD29_PF_CSPI1_SCLK,
90 PD30_PF_CSPI1_MISO,
91 PD31_PF_CSPI1_MOSI,
92 /* SSI4 */
93 #if defined(CONFIG_SND_SOC_EUKREA_TLV320) \
94 || defined(CONFIG_SND_SOC_EUKREA_TLV320_MODULE)
95 PC16_PF_SSI4_FS,
96 PC17_PF_SSI4_RXD | GPIO_PUEN,
97 PC18_PF_SSI4_TXD | GPIO_PUEN,
98 PC19_PF_SSI4_CLK,
99 #endif
100 };
101
102 static const uint32_t eukrea_mbimx27_keymap[] = {
103 KEY(0, 0, KEY_UP),
104 KEY(0, 1, KEY_DOWN),
105 KEY(1, 0, KEY_RIGHT),
106 KEY(1, 1, KEY_LEFT),
107 };
108
109 static const struct matrix_keymap_data
110 eukrea_mbimx27_keymap_data __initconst = {
111 .keymap = eukrea_mbimx27_keymap,
112 .keymap_size = ARRAY_SIZE(eukrea_mbimx27_keymap),
113 };
114
115 static const struct gpio_led eukrea_mbimx27_gpio_leds[] __initconst = {
116 {
117 .name = "led1",
118 .default_trigger = "heartbeat",
119 .active_low = 1,
120 .gpio = GPIO_PORTF | 16,
121 },
122 {
123 .name = "led2",
124 .default_trigger = "none",
125 .active_low = 1,
126 .gpio = GPIO_PORTF | 19,
127 },
128 };
129
130 static const struct gpio_led_platform_data
131 eukrea_mbimx27_gpio_led_info __initconst = {
132 .leds = eukrea_mbimx27_gpio_leds,
133 .num_leds = ARRAY_SIZE(eukrea_mbimx27_gpio_leds),
134 };
135
136 static struct imx_fb_videomode eukrea_mbimx27_modes[] = {
137 {
138 .mode = {
139 .name = "CMO-QVGA",
140 .refresh = 60,
141 .xres = 320,
142 .yres = 240,
143 .pixclock = 156000,
144 .hsync_len = 30,
145 .left_margin = 38,
146 .right_margin = 20,
147 .vsync_len = 3,
148 .upper_margin = 15,
149 .lower_margin = 4,
150 },
151 .pcr = 0xFAD08B80,
152 .bpp = 16,
153 }, {
154 .mode = {
155 .name = "DVI-VGA",
156 .refresh = 60,
157 .xres = 640,
158 .yres = 480,
159 .pixclock = 32000,
160 .hsync_len = 1,
161 .left_margin = 35,
162 .right_margin = 0,
163 .vsync_len = 1,
164 .upper_margin = 7,
165 .lower_margin = 0,
166 },
167 .pcr = 0xFA208B80,
168 .bpp = 16,
169 }, {
170 .mode = {
171 .name = "DVI-SVGA",
172 .refresh = 60,
173 .xres = 800,
174 .yres = 600,
175 .pixclock = 25000,
176 .hsync_len = 1,
177 .left_margin = 35,
178 .right_margin = 0,
179 .vsync_len = 1,
180 .upper_margin = 7,
181 .lower_margin = 0,
182 },
183 .pcr = 0xFA208B80,
184 .bpp = 16,
185 },
186 };
187
188 static const struct imx_fb_platform_data eukrea_mbimx27_fb_data __initconst = {
189 .mode = eukrea_mbimx27_modes,
190 .num_modes = ARRAY_SIZE(eukrea_mbimx27_modes),
191
192 .pwmr = 0x00A903FF,
193 .lscr1 = 0x00120300,
194 .dmacr = 0x00040060,
195 };
196
eukrea_mbimx27_bl_set_intensity(int intensity)197 static void eukrea_mbimx27_bl_set_intensity(int intensity)
198 {
199 if (intensity)
200 gpio_direction_output(GPIO_PORTE | 5, 1);
201 else
202 gpio_direction_output(GPIO_PORTE | 5, 0);
203 }
204
205 static struct generic_bl_info eukrea_mbimx27_bl_info = {
206 .name = "eukrea_mbimx27-bl",
207 .max_intensity = 0xff,
208 .default_intensity = 0xff,
209 .set_bl_intensity = eukrea_mbimx27_bl_set_intensity,
210 };
211
212 static struct platform_device eukrea_mbimx27_bl_dev = {
213 .name = "generic-bl",
214 .id = 1,
215 .dev = {
216 .platform_data = &eukrea_mbimx27_bl_info,
217 },
218 };
219
eukrea_mbimx27_lcd_power_set(struct plat_lcd_data * pd,unsigned int power)220 static void eukrea_mbimx27_lcd_power_set(struct plat_lcd_data *pd,
221 unsigned int power)
222 {
223 if (power)
224 gpio_direction_output(GPIO_PORTA | 25, 1);
225 else
226 gpio_direction_output(GPIO_PORTA | 25, 0);
227 }
228
229 static struct plat_lcd_data eukrea_mbimx27_lcd_power_data = {
230 .set_power = eukrea_mbimx27_lcd_power_set,
231 };
232
233 static struct platform_device eukrea_mbimx27_lcd_powerdev = {
234 .name = "platform-lcd",
235 .dev.platform_data = &eukrea_mbimx27_lcd_power_data,
236 };
237
238 static const struct imxuart_platform_data uart_pdata __initconst = {
239 .flags = IMXUART_HAVE_RTSCTS,
240 };
241
242 #define ADS7846_PENDOWN (GPIO_PORTD | 25)
243
ads7846_dev_init(void)244 static void __maybe_unused ads7846_dev_init(void)
245 {
246 if (gpio_request(ADS7846_PENDOWN, "ADS7846 pendown") < 0) {
247 printk(KERN_ERR "can't get ads746 pen down GPIO\n");
248 return;
249 }
250 gpio_direction_input(ADS7846_PENDOWN);
251 }
252
ads7846_get_pendown_state(void)253 static int ads7846_get_pendown_state(void)
254 {
255 return !gpio_get_value(ADS7846_PENDOWN);
256 }
257
258 static struct ads7846_platform_data ads7846_config __initdata = {
259 .get_pendown_state = ads7846_get_pendown_state,
260 .keep_vref_on = 1,
261 };
262
263 static struct spi_board_info __maybe_unused
264 eukrea_mbimx27_spi_board_info[] __initdata = {
265 [0] = {
266 .modalias = "ads7846",
267 .bus_num = 0,
268 .chip_select = 0,
269 .max_speed_hz = 1500000,
270 .irq = IRQ_GPIOD(25),
271 .platform_data = &ads7846_config,
272 .mode = SPI_MODE_2,
273 },
274 };
275
276 static int eukrea_mbimx27_spi_cs[] = {GPIO_PORTD | 28};
277
278 static const struct spi_imx_master eukrea_mbimx27_spi0_data __initconst = {
279 .chipselect = eukrea_mbimx27_spi_cs,
280 .num_chipselect = ARRAY_SIZE(eukrea_mbimx27_spi_cs),
281 };
282
283 static struct i2c_board_info eukrea_mbimx27_i2c_devices[] = {
284 {
285 I2C_BOARD_INFO("tlv320aic23", 0x1a),
286 },
287 };
288
289 static const struct imxmmc_platform_data sdhc_pdata __initconst = {
290 .dat3_card_detect = 1,
291 };
292
293 static const
294 struct imx_ssi_platform_data eukrea_mbimx27_ssi_pdata __initconst = {
295 .flags = IMX_SSI_DMA | IMX_SSI_USE_I2S_SLAVE,
296 };
297
298 /*
299 * system init for baseboard usage. Will be called by cpuimx27 init.
300 *
301 * Add platform devices present on this baseboard and init
302 * them from CPU side as far as required to use them later on
303 */
eukrea_mbimx27_baseboard_init(void)304 void __init eukrea_mbimx27_baseboard_init(void)
305 {
306 mxc_gpio_setup_multiple_pins(eukrea_mbimx27_pins,
307 ARRAY_SIZE(eukrea_mbimx27_pins), "MBIMX27");
308
309 #if defined(CONFIG_SND_SOC_EUKREA_TLV320) \
310 || defined(CONFIG_SND_SOC_EUKREA_TLV320_MODULE)
311 /* SSI unit master I2S codec connected to SSI_PINS_4*/
312 mxc_audmux_v1_configure_port(MX27_AUDMUX_HPCR1_SSI0,
313 MXC_AUDMUX_V1_PCR_SYN |
314 MXC_AUDMUX_V1_PCR_TFSDIR |
315 MXC_AUDMUX_V1_PCR_TCLKDIR |
316 MXC_AUDMUX_V1_PCR_RFSDIR |
317 MXC_AUDMUX_V1_PCR_RCLKDIR |
318 MXC_AUDMUX_V1_PCR_TFCSEL(MX27_AUDMUX_HPCR3_SSI_PINS_4) |
319 MXC_AUDMUX_V1_PCR_RFCSEL(MX27_AUDMUX_HPCR3_SSI_PINS_4) |
320 MXC_AUDMUX_V1_PCR_RXDSEL(MX27_AUDMUX_HPCR3_SSI_PINS_4)
321 );
322 mxc_audmux_v1_configure_port(MX27_AUDMUX_HPCR3_SSI_PINS_4,
323 MXC_AUDMUX_V1_PCR_SYN |
324 MXC_AUDMUX_V1_PCR_RXDSEL(MX27_AUDMUX_HPCR1_SSI0)
325 );
326 #endif
327
328 imx27_add_imx_uart1(&uart_pdata);
329 imx27_add_imx_uart2(&uart_pdata);
330 #if !defined(MACH_EUKREA_CPUIMX27_USEUART4)
331 imx27_add_imx_uart3(&uart_pdata);
332 #endif
333
334 imx27_add_imx_fb(&eukrea_mbimx27_fb_data);
335 imx27_add_mxc_mmc(0, &sdhc_pdata);
336
337 i2c_register_board_info(0, eukrea_mbimx27_i2c_devices,
338 ARRAY_SIZE(eukrea_mbimx27_i2c_devices));
339
340 imx27_add_imx_ssi(0, &eukrea_mbimx27_ssi_pdata);
341
342 #if defined(CONFIG_TOUCHSCREEN_ADS7846) \
343 || defined(CONFIG_TOUCHSCREEN_ADS7846_MODULE)
344 /* ADS7846 Touchscreen controller init */
345 mxc_gpio_mode(GPIO_PORTD | 25 | GPIO_GPIO | GPIO_IN);
346 ads7846_dev_init();
347 #endif
348
349 /* SPI_CS0 init */
350 mxc_gpio_mode(GPIO_PORTD | 28 | GPIO_GPIO | GPIO_OUT);
351 imx27_add_spi_imx0(&eukrea_mbimx27_spi0_data);
352 spi_register_board_info(eukrea_mbimx27_spi_board_info,
353 ARRAY_SIZE(eukrea_mbimx27_spi_board_info));
354
355 /* Leds configuration */
356 mxc_gpio_mode(GPIO_PORTF | 16 | GPIO_GPIO | GPIO_OUT);
357 mxc_gpio_mode(GPIO_PORTF | 19 | GPIO_GPIO | GPIO_OUT);
358 /* Backlight */
359 mxc_gpio_mode(GPIO_PORTE | 5 | GPIO_GPIO | GPIO_OUT);
360 gpio_request(GPIO_PORTE | 5, "backlight");
361 platform_device_register(&eukrea_mbimx27_bl_dev);
362 /* LCD Reset */
363 mxc_gpio_mode(GPIO_PORTA | 25 | GPIO_GPIO | GPIO_OUT);
364 gpio_request(GPIO_PORTA | 25, "lcd_enable");
365 platform_device_register(&eukrea_mbimx27_lcd_powerdev);
366
367 imx27_add_imx_keypad(&eukrea_mbimx27_keymap_data);
368
369 gpio_led_register_device(-1, &eukrea_mbimx27_gpio_led_info);
370 }
371