1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
|
/*
* Copyright (C) 2009 Eric Benard - eric@eukrea.com
*
* Based on pcm970-baseboard.c which is :
* Copyright (C) 2008 Juergen Beisert (kernel@pengutronix.de)
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
* MA 02110-1301, USA.
*/
#include <linux/gpio.h>
#include <linux/irq.h>
#include <linux/platform_device.h>
#include <linux/spi/spi.h>
#include <linux/spi/ads7846.h>
#include <asm/mach/arch.h>
#include <mach/common.h>
#include <mach/iomux.h>
#include <mach/imxfb.h>
#include <mach/hardware.h>
#include <mach/mmc.h>
#include <mach/imx-uart.h>
#include "devices.h"
static int eukrea_mbimx27_pins[] = {
/* UART2 */
PE3_PF_UART2_CTS,
PE4_PF_UART2_RTS,
PE6_PF_UART2_TXD,
PE7_PF_UART2_RXD,
/* UART3 */
PE8_PF_UART3_TXD,
PE9_PF_UART3_RXD,
PE10_PF_UART3_CTS,
PE11_PF_UART3_RTS,
/* UART4 */
PB26_AF_UART4_RTS,
PB28_AF_UART4_TXD,
PB29_AF_UART4_CTS,
PB31_AF_UART4_RXD,
/* SDHC1*/
PE18_PF_SD1_D0,
PE19_PF_SD1_D1,
PE20_PF_SD1_D2,
PE21_PF_SD1_D3,
PE22_PF_SD1_CMD,
PE23_PF_SD1_CLK,
/* display */
PA5_PF_LSCLK,
PA6_PF_LD0,
PA7_PF_LD1,
PA8_PF_LD2,
PA9_PF_LD3,
PA10_PF_LD4,
PA11_PF_LD5,
PA12_PF_LD6,
PA13_PF_LD7,
PA14_PF_LD8,
PA15_PF_LD9,
PA16_PF_LD10,
PA17_PF_LD11,
PA18_PF_LD12,
PA19_PF_LD13,
PA20_PF_LD14,
PA21_PF_LD15,
PA22_PF_LD16,
PA23_PF_LD17,
PA28_PF_HSYNC,
PA29_PF_VSYNC,
PA30_PF_CONTRAST,
PA31_PF_OE_ACD,
/* SPI1 */
PD28_PF_CSPI1_SS0,
PD29_PF_CSPI1_SCLK,
PD30_PF_CSPI1_MISO,
PD31_PF_CSPI1_MOSI,
};
static struct gpio_led gpio_leds[] = {
{
.name = "led1",
.default_trigger = "heartbeat",
.active_low = 1,
.gpio = GPIO_PORTF | 16,
},
{
.name = "led2",
.default_trigger = "none",
.active_low = 1,
.gpio = GPIO_PORTF | 19,
},
{
.name = "backlight",
.default_trigger = "backlight",
.active_low = 0,
.gpio = GPIO_PORTE | 5,
},
};
static struct gpio_led_platform_data gpio_led_info = {
.leds = gpio_leds,
.num_leds = ARRAY_SIZE(gpio_leds),
};
static struct platform_device leds_gpio = {
.name = "leds-gpio",
.id = -1,
.dev = {
.platform_data = &gpio_led_info,
},
};
static struct imx_fb_videomode eukrea_mbimx27_modes[] = {
{
.mode = {
.name = "CMO-QGVA",
.refresh = 60,
.xres = 320,
.yres = 240,
.pixclock = 156000,
.hsync_len = 30,
.left_margin = 38,
.right_margin = 20,
.vsync_len = 3,
.upper_margin = 15,
.lower_margin = 4,
},
.pcr = 0xFAD08B80,
.bpp = 16,
},
};
static struct imx_fb_platform_data eukrea_mbimx27_fb_data = {
.mode = eukrea_mbimx27_modes,
.num_modes = ARRAY_SIZE(eukrea_mbimx27_modes),
.pwmr = 0x00A903FF,
.lscr1 = 0x00120300,
.dmacr = 0x00040060,
};
static struct imxuart_platform_data uart_pdata[] = {
{
.flags = IMXUART_HAVE_RTSCTS,
},
{
.flags = IMXUART_HAVE_RTSCTS,
},
};
#if defined(CONFIG_TOUCHSCREEN_ADS7846)
|| defined(CONFIG_TOUCHSCREEN_ADS7846_MODULE)
#define ADS7846_PENDOWN (GPIO_PORTD | 25)
static void ads7846_dev_init(void)
{
if (gpio_request(ADS7846_PENDOWN, "ADS7846 pendown") < 0) {
printk(KERN_ERR "can't get ads746 pen down GPIO\n");
return;
}
gpio_direction_input(ADS7846_PENDOWN);
}
static int ads7846_get_pendown_state(void)
{
return !gpio_get_value(ADS7846_PENDOWN);
}
static struct ads7846_platform_data ads7846_config __initdata = {
.get_pendown_state = ads7846_get_pendown_state,
.keep_vref_on = 1,
};
static struct spi_board_info eukrea_mbimx27_spi_board_info[] __initdata = {
[0] = {
.modalias = "ads7846",
.bus_num = 0,
.chip_select = 0,
.max_speed_hz = 1500000,
.irq = IRQ_GPIOD(25),
.platform_data = &ads7846_config,
.mode = SPI_MODE_2,
},
};
static int eukrea_mbimx27_spi_cs[] = {GPIO_PORTD | 28};
static struct spi_imx_master eukrea_mbimx27_spi_0_data = {
.chipselect = eukrea_mbimx27_spi_cs,
.num_chipselect = ARRAY_SIZE(eukrea_mbimx27_spi_cs),
};
#endif
static struct platform_device *platform_devices[] __initdata = {
&leds_gpio,
};
/*
* system init for baseboard usage. Will be called by cpuimx27 init.
*
* Add platform devices present on this baseboard and init
* them from CPU side as far as required to use them later on
*/
void __init eukrea_mbimx27_baseboard_init(void)
{
mxc_gpio_setup_multiple_pins(eukrea_mbimx27_pins,
ARRAY_SIZE(eukrea_mbimx27_pins), "MBIMX27");
mxc_register_device(&mxc_uart_device1, &uart_pdata[0]);
mxc_register_device(&mxc_uart_device2, &uart_pdata[1]);
mxc_register_device(&mxc_fb_device, &eukrea_mbimx27_fb_data);
mxc_register_device(&mxc_sdhc_device0, NULL);
#if defined(CONFIG_TOUCHSCREEN_ADS7846)
|| defined(CONFIG_TOUCHSCREEN_ADS7846_MODULE)
/* SPI and ADS7846 Touchscreen controler init */
mxc_gpio_mode(GPIO_PORTD | 28 | GPIO_GPIO | GPIO_OUT);
mxc_gpio_mode(GPIO_PORTD | 25 | GPIO_GPIO | GPIO_IN);
mxc_register_device(&mxc_spi_device0, &eukrea_mbimx27_spi_0_data);
spi_register_board_info(eukrea_mbimx27_spi_board_info,
ARRAY_SIZE(eukrea_mbimx27_spi_board_info));
ads7846_dev_init();
#endif
/* Leds configuration */
mxc_gpio_mode(GPIO_PORTF | 16 | GPIO_GPIO | GPIO_OUT);
mxc_gpio_mode(GPIO_PORTF | 19 | GPIO_GPIO | GPIO_OUT);
/* Backlight */
mxc_gpio_mode(GPIO_PORTE | 5 | GPIO_GPIO | GPIO_OUT);
platform_add_devices(platform_devices, ARRAY_SIZE(platform_devices));
}
|
