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/leds.h>
28 #include <linux/platform_device.h>
29 #include <linux/input.h>
30 #include <linux/i2c.h>
31
32 #include <asm/mach-types.h>
33 #include <asm/mach/arch.h>
34 #include <asm/mach/time.h>
35 #include <asm/mach/map.h>
36
37 #include <mach/hardware.h>
38 #include <mach/common.h>
39 #include <mach/iomux-mx51.h>
40 #include <mach/audmux.h>
41
42 #include "devices-imx51.h"
43
44 static iomux_v3_cfg_t eukrea_mbimxsd_pads[] = {
45 /* LED */
46 MX51_PAD_NANDF_D10__GPIO3_30,
47 /* SWITCH */
48 NEW_PAD_CTRL(MX51_PAD_NANDF_D9__GPIO3_31, PAD_CTL_PUS_22K_UP |
49 PAD_CTL_PKE | PAD_CTL_SRE_FAST |
50 PAD_CTL_DSE_HIGH | PAD_CTL_PUE | PAD_CTL_HYS),
51 /* UART2 */
52 MX51_PAD_UART2_RXD__UART2_RXD,
53 MX51_PAD_UART2_TXD__UART2_TXD,
54 /* UART 3 */
55 MX51_PAD_UART3_RXD__UART3_RXD,
56 MX51_PAD_UART3_TXD__UART3_TXD,
57 MX51_PAD_KEY_COL4__UART3_RTS,
58 MX51_PAD_KEY_COL5__UART3_CTS,
59 /* SD */
60 MX51_PAD_SD1_CMD__SD1_CMD,
61 MX51_PAD_SD1_CLK__SD1_CLK,
62 MX51_PAD_SD1_DATA0__SD1_DATA0,
63 MX51_PAD_SD1_DATA1__SD1_DATA1,
64 MX51_PAD_SD1_DATA2__SD1_DATA2,
65 MX51_PAD_SD1_DATA3__SD1_DATA3,
66 /* SD1 CD */
67 NEW_PAD_CTRL(MX51_PAD_GPIO1_0__SD1_CD, PAD_CTL_PUS_22K_UP |
68 PAD_CTL_PKE | PAD_CTL_SRE_FAST |
69 PAD_CTL_DSE_HIGH | PAD_CTL_PUE | PAD_CTL_HYS),
70 };
71
72 #define GPIO_LED1 IMX_GPIO_NR(3, 30)
73 #define GPIO_SWITCH1 IMX_GPIO_NR(3, 31)
74
75 static const struct gpio_led eukrea_mbimxsd_leds[] __initconst = {
76 {
77 .name = "led1",
78 .default_trigger = "heartbeat",
79 .active_low = 1,
80 .gpio = GPIO_LED1,
81 },
82 };
83
84 static const struct gpio_led_platform_data
85 eukrea_mbimxsd_led_info __initconst = {
86 .leds = eukrea_mbimxsd_leds,
87 .num_leds = ARRAY_SIZE(eukrea_mbimxsd_leds),
88 };
89
90 static struct gpio_keys_button eukrea_mbimxsd_gpio_buttons[] = {
91 {
92 .gpio = GPIO_SWITCH1,
93 .code = BTN_0,
94 .desc = "BP1",
95 .active_low = 1,
96 .wakeup = 1,
97 },
98 };
99
100 static const struct gpio_keys_platform_data
101 eukrea_mbimxsd_button_data __initconst = {
102 .buttons = eukrea_mbimxsd_gpio_buttons,
103 .nbuttons = ARRAY_SIZE(eukrea_mbimxsd_gpio_buttons),
104 };
105
106 static const struct imxuart_platform_data uart_pdata __initconst = {
107 .flags = IMXUART_HAVE_RTSCTS,
108 };
109
110 static struct i2c_board_info eukrea_mbimxsd_i2c_devices[] = {
111 {
112 I2C_BOARD_INFO("tlv320aic23", 0x1a),
113 },
114 };
115
116 /*
117 * system init for baseboard usage. Will be called by cpuimx51sd init.
118 *
119 * Add platform devices present on this baseboard and init
120 * them from CPU side as far as required to use them later on
121 */
eukrea_mbimxsd51_baseboard_init(void)122 void __init eukrea_mbimxsd51_baseboard_init(void)
123 {
124 if (mxc_iomux_v3_setup_multiple_pads(eukrea_mbimxsd_pads,
125 ARRAY_SIZE(eukrea_mbimxsd_pads)))
126 printk(KERN_ERR "error setting mbimxsd pads !\n");
127
128 imx51_add_imx_uart(1, NULL);
129 imx51_add_imx_uart(2, &uart_pdata);
130
131 imx51_add_sdhci_esdhc_imx(0, NULL);
132
133 gpio_request(GPIO_LED1, "LED1");
134 gpio_direction_output(GPIO_LED1, 1);
135 gpio_free(GPIO_LED1);
136
137 gpio_request(GPIO_SWITCH1, "SWITCH1");
138 gpio_direction_input(GPIO_SWITCH1);
139 gpio_free(GPIO_SWITCH1);
140
141 i2c_register_board_info(0, eukrea_mbimxsd_i2c_devices,
142 ARRAY_SIZE(eukrea_mbimxsd_i2c_devices));
143
144 gpio_led_register_device(-1, &eukrea_mbimxsd_led_info);
145 imx_add_gpio_keys(&eukrea_mbimxsd_button_data);
146 }
147