1 /*
2 * board-omap3pandora.c (Pandora Handheld Console)
3 *
4 * This program is free software; you can redistribute it and/or
5 * modify it under the terms of the GNU General Public License
6 * version 2 as published by the Free Software Foundation.
7 *
8 * This program is distributed in the hope that it will be useful, but
9 * WITHOUT ANY WARRANTY; without even the implied warranty of
10 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
11 * General Public License for more details.
12 *
13 * You should have received a copy of the GNU General Public License
14 * along with this program; if not, write to the Free Software
15 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
16 * 02110-1301 USA
17 *
18 */
19
20 #include <linux/init.h>
21 #include <linux/kernel.h>
22 #include <linux/platform_device.h>
23
24 #include <linux/spi/spi.h>
25 #include <linux/spi/ads7846.h>
26 #include <linux/i2c/twl4030.h>
27
28 #include <asm/mach-types.h>
29 #include <asm/mach/arch.h>
30 #include <asm/mach/map.h>
31
32 #include <mach/board.h>
33 #include <mach/common.h>
34 #include <mach/gpio.h>
35 #include <mach/hardware.h>
36 #include <mach/mcspi.h>
37
38 #include "mmc-twl4030.h"
39
40 #define OMAP3_PANDORA_TS_GPIO 94
41
42 static struct twl4030_hsmmc_info omap3pandora_mmc[] = {
43 {
44 .mmc = 1,
45 .wires = 4,
46 .gpio_cd = -EINVAL,
47 .gpio_wp = 126,
48 .ext_clock = 0,
49 },
50 {
51 .mmc = 2,
52 .wires = 4,
53 .gpio_cd = -EINVAL,
54 .gpio_wp = 127,
55 .ext_clock = 1,
56 },
57 {} /* Terminator */
58 };
59
60 static struct omap_uart_config omap3pandora_uart_config __initdata = {
61 .enabled_uarts = (1 << 2), /* UART3 */
62 };
63
omap3pandora_twl_gpio_setup(struct device * dev,unsigned gpio,unsigned ngpio)64 static int omap3pandora_twl_gpio_setup(struct device *dev,
65 unsigned gpio, unsigned ngpio)
66 {
67 /* gpio + {0,1} is "mmc{0,1}_cd" (input/IRQ) */
68 omap3pandora_mmc[0].gpio_cd = gpio + 0;
69 omap3pandora_mmc[1].gpio_cd = gpio + 1;
70 twl4030_mmc_init(omap3pandora_mmc);
71
72 return 0;
73 }
74
75 static struct twl4030_gpio_platform_data omap3pandora_gpio_data = {
76 .gpio_base = OMAP_MAX_GPIO_LINES,
77 .irq_base = TWL4030_GPIO_IRQ_BASE,
78 .irq_end = TWL4030_GPIO_IRQ_END,
79 .setup = omap3pandora_twl_gpio_setup,
80 };
81
82 static struct twl4030_usb_data omap3pandora_usb_data = {
83 .usb_mode = T2_USB_MODE_ULPI,
84 };
85
86 static struct twl4030_platform_data omap3pandora_twldata = {
87 .irq_base = TWL4030_IRQ_BASE,
88 .irq_end = TWL4030_IRQ_END,
89 .gpio = &omap3pandora_gpio_data,
90 .usb = &omap3pandora_usb_data,
91 };
92
93 static struct i2c_board_info __initdata omap3pandora_i2c_boardinfo[] = {
94 {
95 I2C_BOARD_INFO("tps65950", 0x48),
96 .flags = I2C_CLIENT_WAKE,
97 .irq = INT_34XX_SYS_NIRQ,
98 .platform_data = &omap3pandora_twldata,
99 },
100 };
101
omap3pandora_i2c_init(void)102 static int __init omap3pandora_i2c_init(void)
103 {
104 omap_register_i2c_bus(1, 2600, omap3pandora_i2c_boardinfo,
105 ARRAY_SIZE(omap3pandora_i2c_boardinfo));
106 /* i2c2 pins are not connected */
107 omap_register_i2c_bus(3, 400, NULL, 0);
108 return 0;
109 }
110
omap3pandora_init_irq(void)111 static void __init omap3pandora_init_irq(void)
112 {
113 omap2_init_common_hw();
114 omap_init_irq();
115 omap_gpio_init();
116 }
117
omap3pandora_ads7846_init(void)118 static void __init omap3pandora_ads7846_init(void)
119 {
120 int gpio = OMAP3_PANDORA_TS_GPIO;
121 int ret;
122
123 ret = gpio_request(gpio, "ads7846_pen_down");
124 if (ret < 0) {
125 printk(KERN_ERR "Failed to request GPIO %d for "
126 "ads7846 pen down IRQ\n", gpio);
127 return;
128 }
129
130 gpio_direction_input(gpio);
131 }
132
ads7846_get_pendown_state(void)133 static int ads7846_get_pendown_state(void)
134 {
135 return !gpio_get_value(OMAP3_PANDORA_TS_GPIO);
136 }
137
138 static struct ads7846_platform_data ads7846_config = {
139 .x_max = 0x0fff,
140 .y_max = 0x0fff,
141 .x_plate_ohms = 180,
142 .pressure_max = 255,
143 .debounce_max = 10,
144 .debounce_tol = 3,
145 .debounce_rep = 1,
146 .get_pendown_state = ads7846_get_pendown_state,
147 .keep_vref_on = 1,
148 };
149
150 static struct omap2_mcspi_device_config ads7846_mcspi_config = {
151 .turbo_mode = 0,
152 .single_channel = 1, /* 0: slave, 1: master */
153 };
154
155 static struct spi_board_info omap3pandora_spi_board_info[] __initdata = {
156 {
157 .modalias = "ads7846",
158 .bus_num = 1,
159 .chip_select = 0,
160 .max_speed_hz = 1500000,
161 .controller_data = &ads7846_mcspi_config,
162 .irq = OMAP_GPIO_IRQ(OMAP3_PANDORA_TS_GPIO),
163 .platform_data = &ads7846_config,
164 }
165 };
166
167 static struct platform_device omap3pandora_lcd_device = {
168 .name = "pandora_lcd",
169 .id = -1,
170 };
171
172 static struct omap_lcd_config omap3pandora_lcd_config __initdata = {
173 .ctrl_name = "internal",
174 };
175
176 static struct omap_board_config_kernel omap3pandora_config[] __initdata = {
177 { OMAP_TAG_UART, &omap3pandora_uart_config },
178 { OMAP_TAG_LCD, &omap3pandora_lcd_config },
179 };
180
181 static struct platform_device *omap3pandora_devices[] __initdata = {
182 &omap3pandora_lcd_device,
183 };
184
omap3pandora_init(void)185 static void __init omap3pandora_init(void)
186 {
187 omap3pandora_i2c_init();
188 platform_add_devices(omap3pandora_devices,
189 ARRAY_SIZE(omap3pandora_devices));
190 omap_board_config = omap3pandora_config;
191 omap_board_config_size = ARRAY_SIZE(omap3pandora_config);
192 omap_serial_init();
193 spi_register_board_info(omap3pandora_spi_board_info,
194 ARRAY_SIZE(omap3pandora_spi_board_info));
195 omap3pandora_ads7846_init();
196 }
197
omap3pandora_map_io(void)198 static void __init omap3pandora_map_io(void)
199 {
200 omap2_set_globals_343x();
201 omap2_map_common_io();
202 }
203
204 MACHINE_START(OMAP3_PANDORA, "Pandora Handheld Console")
205 .phys_io = 0x48000000,
206 .io_pg_offst = ((0xd8000000) >> 18) & 0xfffc,
207 .boot_params = 0x80000100,
208 .map_io = omap3pandora_map_io,
209 .init_irq = omap3pandora_init_irq,
210 .init_machine = omap3pandora_init,
211 .timer = &omap_timer,
212 MACHINE_END
213