1 /*
2 * Copyright 2010 Freescale Semiconductor, Inc. All Rights Reserved.
3 *
4 * This program is free software; you can redistribute it and/or modify
5 * it under the terms of the GNU General Public License as published by
6 * the Free Software Foundation; either version 2 of the License, or
7 * (at your option) any later version.
8 *
9 * This program is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 * GNU General Public License for more details.
13 */
14
15 #include <linux/delay.h>
16 #include <linux/platform_device.h>
17 #include <linux/gpio.h>
18
19 #include <asm/mach-types.h>
20 #include <asm/mach/arch.h>
21 #include <asm/mach/time.h>
22
23 #include <mach/common.h>
24 #include <mach/iomux-mx23.h>
25
26 #include "devices-mx23.h"
27
28 #define MX23EVK_LCD_ENABLE MXS_GPIO_NR(1, 18)
29 #define MX23EVK_BL_ENABLE MXS_GPIO_NR(1, 28)
30 #define MX23EVK_MMC0_WRITE_PROTECT MXS_GPIO_NR(1, 30)
31 #define MX23EVK_MMC0_SLOT_POWER MXS_GPIO_NR(1, 29)
32
33 static const iomux_cfg_t mx23evk_pads[] __initconst = {
34 /* duart */
35 MX23_PAD_PWM0__DUART_RX | MXS_PAD_CTRL,
36 MX23_PAD_PWM1__DUART_TX | MXS_PAD_CTRL,
37
38 /* auart */
39 MX23_PAD_AUART1_RX__AUART1_RX | MXS_PAD_CTRL,
40 MX23_PAD_AUART1_TX__AUART1_TX | MXS_PAD_CTRL,
41 MX23_PAD_AUART1_CTS__AUART1_CTS | MXS_PAD_CTRL,
42 MX23_PAD_AUART1_RTS__AUART1_RTS | MXS_PAD_CTRL,
43
44 /* mxsfb (lcdif) */
45 MX23_PAD_LCD_D00__LCD_D00 | MXS_PAD_CTRL,
46 MX23_PAD_LCD_D01__LCD_D01 | MXS_PAD_CTRL,
47 MX23_PAD_LCD_D02__LCD_D02 | MXS_PAD_CTRL,
48 MX23_PAD_LCD_D03__LCD_D03 | MXS_PAD_CTRL,
49 MX23_PAD_LCD_D04__LCD_D04 | MXS_PAD_CTRL,
50 MX23_PAD_LCD_D05__LCD_D05 | MXS_PAD_CTRL,
51 MX23_PAD_LCD_D06__LCD_D06 | MXS_PAD_CTRL,
52 MX23_PAD_LCD_D07__LCD_D07 | MXS_PAD_CTRL,
53 MX23_PAD_LCD_D08__LCD_D08 | MXS_PAD_CTRL,
54 MX23_PAD_LCD_D09__LCD_D09 | MXS_PAD_CTRL,
55 MX23_PAD_LCD_D10__LCD_D10 | MXS_PAD_CTRL,
56 MX23_PAD_LCD_D11__LCD_D11 | MXS_PAD_CTRL,
57 MX23_PAD_LCD_D12__LCD_D12 | MXS_PAD_CTRL,
58 MX23_PAD_LCD_D13__LCD_D13 | MXS_PAD_CTRL,
59 MX23_PAD_LCD_D14__LCD_D14 | MXS_PAD_CTRL,
60 MX23_PAD_LCD_D15__LCD_D15 | MXS_PAD_CTRL,
61 MX23_PAD_LCD_D16__LCD_D16 | MXS_PAD_CTRL,
62 MX23_PAD_LCD_D17__LCD_D17 | MXS_PAD_CTRL,
63 MX23_PAD_GPMI_D08__LCD_D18 | MXS_PAD_CTRL,
64 MX23_PAD_GPMI_D09__LCD_D19 | MXS_PAD_CTRL,
65 MX23_PAD_GPMI_D10__LCD_D20 | MXS_PAD_CTRL,
66 MX23_PAD_GPMI_D11__LCD_D21 | MXS_PAD_CTRL,
67 MX23_PAD_GPMI_D12__LCD_D22 | MXS_PAD_CTRL,
68 MX23_PAD_GPMI_D13__LCD_D23 | MXS_PAD_CTRL,
69 MX23_PAD_LCD_VSYNC__LCD_VSYNC | MXS_PAD_CTRL,
70 MX23_PAD_LCD_HSYNC__LCD_HSYNC | MXS_PAD_CTRL,
71 MX23_PAD_LCD_DOTCK__LCD_DOTCK | MXS_PAD_CTRL,
72 MX23_PAD_LCD_ENABLE__LCD_ENABLE | MXS_PAD_CTRL,
73 /* LCD panel enable */
74 MX23_PAD_LCD_RESET__GPIO_1_18 | MXS_PAD_CTRL,
75 /* backlight control */
76 MX23_PAD_PWM2__GPIO_1_28 | MXS_PAD_CTRL,
77
78 /* mmc */
79 MX23_PAD_SSP1_DATA0__SSP1_DATA0 |
80 (MXS_PAD_8MA | MXS_PAD_3V3 | MXS_PAD_PULLUP),
81 MX23_PAD_SSP1_DATA1__SSP1_DATA1 |
82 (MXS_PAD_8MA | MXS_PAD_3V3 | MXS_PAD_PULLUP),
83 MX23_PAD_SSP1_DATA2__SSP1_DATA2 |
84 (MXS_PAD_8MA | MXS_PAD_3V3 | MXS_PAD_PULLUP),
85 MX23_PAD_SSP1_DATA3__SSP1_DATA3 |
86 (MXS_PAD_8MA | MXS_PAD_3V3 | MXS_PAD_PULLUP),
87 MX23_PAD_GPMI_D08__SSP1_DATA4 |
88 (MXS_PAD_8MA | MXS_PAD_3V3 | MXS_PAD_PULLUP),
89 MX23_PAD_GPMI_D09__SSP1_DATA5 |
90 (MXS_PAD_8MA | MXS_PAD_3V3 | MXS_PAD_PULLUP),
91 MX23_PAD_GPMI_D10__SSP1_DATA6 |
92 (MXS_PAD_8MA | MXS_PAD_3V3 | MXS_PAD_PULLUP),
93 MX23_PAD_GPMI_D11__SSP1_DATA7 |
94 (MXS_PAD_8MA | MXS_PAD_3V3 | MXS_PAD_PULLUP),
95 MX23_PAD_SSP1_CMD__SSP1_CMD |
96 (MXS_PAD_8MA | MXS_PAD_3V3 | MXS_PAD_PULLUP),
97 MX23_PAD_SSP1_DETECT__SSP1_DETECT |
98 (MXS_PAD_8MA | MXS_PAD_3V3 | MXS_PAD_NOPULL),
99 MX23_PAD_SSP1_SCK__SSP1_SCK |
100 (MXS_PAD_8MA | MXS_PAD_3V3 | MXS_PAD_NOPULL),
101 /* write protect */
102 MX23_PAD_PWM4__GPIO_1_30 |
103 (MXS_PAD_4MA | MXS_PAD_3V3 | MXS_PAD_NOPULL),
104 /* slot power enable */
105 MX23_PAD_PWM3__GPIO_1_29 |
106 (MXS_PAD_4MA | MXS_PAD_3V3 | MXS_PAD_NOPULL),
107 };
108
109 /* mxsfb (lcdif) */
110 static struct fb_videomode mx23evk_video_modes[] = {
111 {
112 .name = "Samsung-LMS430HF02",
113 .refresh = 60,
114 .xres = 480,
115 .yres = 272,
116 .pixclock = 108096, /* picosecond (9.2 MHz) */
117 .left_margin = 15,
118 .right_margin = 8,
119 .upper_margin = 12,
120 .lower_margin = 4,
121 .hsync_len = 1,
122 .vsync_len = 1,
123 .sync = FB_SYNC_DATA_ENABLE_HIGH_ACT |
124 FB_SYNC_DOTCLK_FAILING_ACT,
125 },
126 };
127
128 static const struct mxsfb_platform_data mx23evk_mxsfb_pdata __initconst = {
129 .mode_list = mx23evk_video_modes,
130 .mode_count = ARRAY_SIZE(mx23evk_video_modes),
131 .default_bpp = 32,
132 .ld_intf_width = STMLCDIF_24BIT,
133 };
134
135 static struct mxs_mmc_platform_data mx23evk_mmc_pdata __initdata = {
136 .wp_gpio = MX23EVK_MMC0_WRITE_PROTECT,
137 .flags = SLOTF_8_BIT_CAPABLE,
138 };
139
mx23evk_init(void)140 static void __init mx23evk_init(void)
141 {
142 int ret;
143
144 mxs_iomux_setup_multiple_pads(mx23evk_pads, ARRAY_SIZE(mx23evk_pads));
145
146 mx23_add_duart();
147 mx23_add_auart0();
148
149 /* power on mmc slot by writing 0 to the gpio */
150 ret = gpio_request_one(MX23EVK_MMC0_SLOT_POWER, GPIOF_OUT_INIT_LOW,
151 "mmc0-slot-power");
152 if (ret)
153 pr_warn("failed to request gpio mmc0-slot-power: %d\n", ret);
154 mx23_add_mxs_mmc(0, &mx23evk_mmc_pdata);
155
156 ret = gpio_request_one(MX23EVK_LCD_ENABLE, GPIOF_DIR_OUT, "lcd-enable");
157 if (ret)
158 pr_warn("failed to request gpio lcd-enable: %d\n", ret);
159 else
160 gpio_set_value(MX23EVK_LCD_ENABLE, 1);
161
162 ret = gpio_request_one(MX23EVK_BL_ENABLE, GPIOF_DIR_OUT, "bl-enable");
163 if (ret)
164 pr_warn("failed to request gpio bl-enable: %d\n", ret);
165 else
166 gpio_set_value(MX23EVK_BL_ENABLE, 1);
167
168 mx23_add_mxsfb(&mx23evk_mxsfb_pdata);
169 mx23_add_rtc_stmp3xxx();
170 }
171
mx23evk_timer_init(void)172 static void __init mx23evk_timer_init(void)
173 {
174 mx23_clocks_init();
175 }
176
177 static struct sys_timer mx23evk_timer = {
178 .init = mx23evk_timer_init,
179 };
180
181 MACHINE_START(MX23EVK, "Freescale MX23 EVK")
182 /* Maintainer: Freescale Semiconductor, Inc. */
183 .map_io = mx23_map_io,
184 .init_irq = mx23_init_irq,
185 .timer = &mx23evk_timer,
186 .init_machine = mx23evk_init,
187 .restart = mxs_restart,
188 MACHINE_END
189