1 /*
2 * Copyright (C) 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/types.h>
23 #include <linux/init.h>
24
25 #include <linux/gpio.h>
26 #include <linux/interrupt.h>
27 #include <linux/irq.h>
28 #include <linux/leds.h>
29 #include <linux/platform_device.h>
30 #include <linux/gpio_keys.h>
31 #include <linux/input.h>
32 #include <linux/i2c.h>
33
34 #include <asm/mach-types.h>
35 #include <asm/mach/arch.h>
36 #include <asm/mach/time.h>
37 #include <asm/mach/map.h>
38
39 #include <mach/hardware.h>
40 #include <mach/common.h>
41 #include <mach/imx-uart.h>
42 #include <mach/iomux-mx51.h>
43 #include <mach/audmux.h>
44
45 #include "devices-imx51.h"
46 #include "devices.h"
47
48 static iomux_v3_cfg_t eukrea_mbimxsd_pads[] = {
49 /* LED */
50 MX51_PAD_NANDF_D10__GPIO3_30,
51 /* SWITCH */
52 _MX51_PAD_NANDF_D9__GPIO3_31 | MUX_PAD_CTRL(PAD_CTL_PUS_22K_UP |
53 PAD_CTL_PKE | PAD_CTL_SRE_FAST |
54 PAD_CTL_DSE_HIGH | PAD_CTL_PUE | PAD_CTL_HYS),
55 /* UART2 */
56 MX51_PAD_UART2_RXD__UART2_RXD,
57 MX51_PAD_UART2_TXD__UART2_TXD,
58 /* UART 3 */
59 MX51_PAD_UART3_RXD__UART3_RXD,
60 MX51_PAD_UART3_TXD__UART3_TXD,
61 MX51_PAD_KEY_COL4__UART3_RTS,
62 MX51_PAD_KEY_COL5__UART3_CTS,
63 /* SD */
64 MX51_PAD_SD1_CMD__SD1_CMD,
65 MX51_PAD_SD1_CLK__SD1_CLK,
66 MX51_PAD_SD1_DATA0__SD1_DATA0,
67 MX51_PAD_SD1_DATA1__SD1_DATA1,
68 MX51_PAD_SD1_DATA2__SD1_DATA2,
69 MX51_PAD_SD1_DATA3__SD1_DATA3,
70 /* SD1 CD */
71 _MX51_PAD_GPIO1_0__SD1_CD | MUX_PAD_CTRL(PAD_CTL_PUS_22K_UP |
72 PAD_CTL_PKE | PAD_CTL_SRE_FAST |
73 PAD_CTL_DSE_HIGH | PAD_CTL_PUE | PAD_CTL_HYS),
74 };
75
76 #define GPIO_LED1 IMX_GPIO_NR(3, 30)
77 #define GPIO_SWITCH1 IMX_GPIO_NR(3, 31)
78
79 static struct gpio_led eukrea_mbimxsd_leds[] = {
80 {
81 .name = "led1",
82 .default_trigger = "heartbeat",
83 .active_low = 1,
84 .gpio = GPIO_LED1,
85 },
86 };
87
88 static struct gpio_led_platform_data eukrea_mbimxsd_led_info = {
89 .leds = eukrea_mbimxsd_leds,
90 .num_leds = ARRAY_SIZE(eukrea_mbimxsd_leds),
91 };
92
93 static struct platform_device eukrea_mbimxsd_leds_gpio = {
94 .name = "leds-gpio",
95 .id = -1,
96 .dev = {
97 .platform_data = &eukrea_mbimxsd_led_info,
98 },
99 };
100
101 static struct gpio_keys_button eukrea_mbimxsd_gpio_buttons[] = {
102 {
103 .gpio = GPIO_SWITCH1,
104 .code = BTN_0,
105 .desc = "BP1",
106 .active_low = 1,
107 .wakeup = 1,
108 },
109 };
110
111 static struct gpio_keys_platform_data eukrea_mbimxsd_button_data = {
112 .buttons = eukrea_mbimxsd_gpio_buttons,
113 .nbuttons = ARRAY_SIZE(eukrea_mbimxsd_gpio_buttons),
114 };
115
116 static struct platform_device eukrea_mbimxsd_button_device = {
117 .name = "gpio-keys",
118 .id = -1,
119 .num_resources = 0,
120 .dev = {
121 .platform_data = &eukrea_mbimxsd_button_data,
122 }
123 };
124
125 static struct platform_device *platform_devices[] __initdata = {
126 &eukrea_mbimxsd_leds_gpio,
127 &eukrea_mbimxsd_button_device,
128 };
129
130 static const struct imxuart_platform_data uart_pdata __initconst = {
131 .flags = IMXUART_HAVE_RTSCTS,
132 };
133
134 static struct i2c_board_info eukrea_mbimxsd_i2c_devices[] = {
135 {
136 I2C_BOARD_INFO("tlv320aic23", 0x1a),
137 },
138 };
139
140 /*
141 * system init for baseboard usage. Will be called by cpuimx51sd init.
142 *
143 * Add platform devices present on this baseboard and init
144 * them from CPU side as far as required to use them later on
145 */
eukrea_mbimxsd51_baseboard_init(void)146 void __init eukrea_mbimxsd51_baseboard_init(void)
147 {
148 if (mxc_iomux_v3_setup_multiple_pads(eukrea_mbimxsd_pads,
149 ARRAY_SIZE(eukrea_mbimxsd_pads)))
150 printk(KERN_ERR "error setting mbimxsd pads !\n");
151
152 imx51_add_imx_uart(1, NULL);
153 imx51_add_imx_uart(2, &uart_pdata);
154
155 imx51_add_sdhci_esdhc_imx(0, NULL);
156
157 gpio_request(GPIO_LED1, "LED1");
158 gpio_direction_output(GPIO_LED1, 1);
159 gpio_free(GPIO_LED1);
160
161 gpio_request(GPIO_SWITCH1, "SWITCH1");
162 gpio_direction_input(GPIO_SWITCH1);
163 gpio_free(GPIO_SWITCH1);
164
165 i2c_register_board_info(0, eukrea_mbimxsd_i2c_devices,
166 ARRAY_SIZE(eukrea_mbimxsd_i2c_devices));
167
168 platform_add_devices(platform_devices, ARRAY_SIZE(platform_devices));
169 }
170