1 /*
2 * Texas Instruments TNETV107X EVM Board Support
3 *
4 * Copyright (C) 2010 Texas Instruments
5 *
6 * This program is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU General Public License as
8 * published by the Free Software Foundation version 2.
9 *
10 * This program is distributed "as is" WITHOUT ANY WARRANTY of any
11 * kind, whether express or implied; without even the implied warranty
12 * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 * GNU General Public License for more details.
14 */
15 #include <linux/kernel.h>
16 #include <linux/init.h>
17 #include <linux/console.h>
18 #include <linux/dma-mapping.h>
19 #include <linux/interrupt.h>
20 #include <linux/gpio.h>
21 #include <linux/delay.h>
22 #include <linux/platform_device.h>
23 #include <linux/ratelimit.h>
24 #include <linux/mtd/mtd.h>
25 #include <linux/mtd/partitions.h>
26 #include <linux/input.h>
27 #include <linux/input/matrix_keypad.h>
28 #include <linux/spi/spi.h>
29
30 #include <asm/mach/arch.h>
31 #include <asm/mach-types.h>
32
33 #include <mach/irqs.h>
34 #include <mach/edma.h>
35 #include <mach/mux.h>
36 #include <mach/cp_intc.h>
37 #include <mach/tnetv107x.h>
38
39 #define EVM_MMC_WP_GPIO 21
40 #define EVM_MMC_CD_GPIO 24
41 #define EVM_SPI_CS_GPIO 54
42
initialize_gpio(int gpio,char * desc)43 static int initialize_gpio(int gpio, char *desc)
44 {
45 int ret;
46
47 ret = gpio_request(gpio, desc);
48 if (ret < 0) {
49 pr_err_ratelimited("cannot open %s gpio\n", desc);
50 return -ENOSYS;
51 }
52 gpio_direction_input(gpio);
53 return gpio;
54 }
55
mmc_get_cd(int index)56 static int mmc_get_cd(int index)
57 {
58 static int gpio;
59
60 if (!gpio)
61 gpio = initialize_gpio(EVM_MMC_CD_GPIO, "mmc card detect");
62
63 if (gpio < 0)
64 return gpio;
65
66 return gpio_get_value(gpio) ? 0 : 1;
67 }
68
mmc_get_ro(int index)69 static int mmc_get_ro(int index)
70 {
71 static int gpio;
72
73 if (!gpio)
74 gpio = initialize_gpio(EVM_MMC_WP_GPIO, "mmc write protect");
75
76 if (gpio < 0)
77 return gpio;
78
79 return gpio_get_value(gpio) ? 1 : 0;
80 }
81
82 static struct davinci_mmc_config mmc_config = {
83 .get_cd = mmc_get_cd,
84 .get_ro = mmc_get_ro,
85 .wires = 4,
86 .max_freq = 50000000,
87 .caps = MMC_CAP_MMC_HIGHSPEED | MMC_CAP_SD_HIGHSPEED,
88 };
89
90 static const short sdio1_pins[] __initconst = {
91 TNETV107X_SDIO1_CLK_1, TNETV107X_SDIO1_CMD_1,
92 TNETV107X_SDIO1_DATA0_1, TNETV107X_SDIO1_DATA1_1,
93 TNETV107X_SDIO1_DATA2_1, TNETV107X_SDIO1_DATA3_1,
94 TNETV107X_GPIO21, TNETV107X_GPIO24,
95 -1
96 };
97
98 static const short uart1_pins[] __initconst = {
99 TNETV107X_UART1_RD, TNETV107X_UART1_TD,
100 -1
101 };
102
103 static const short ssp_pins[] __initconst = {
104 TNETV107X_SSP0_0, TNETV107X_SSP0_1, TNETV107X_SSP0_2,
105 TNETV107X_SSP1_0, TNETV107X_SSP1_1, TNETV107X_SSP1_2,
106 TNETV107X_SSP1_3, -1
107 };
108
109 static struct mtd_partition nand_partitions[] = {
110 /* bootloader (U-Boot, etc) in first 12 sectors */
111 {
112 .name = "bootloader",
113 .offset = 0,
114 .size = (12*SZ_128K),
115 .mask_flags = MTD_WRITEABLE, /* force read-only */
116 },
117 /* bootloader params in the next sector */
118 {
119 .name = "params",
120 .offset = MTDPART_OFS_NXTBLK,
121 .size = SZ_128K,
122 .mask_flags = MTD_WRITEABLE, /* force read-only */
123 },
124 /* kernel */
125 {
126 .name = "kernel",
127 .offset = MTDPART_OFS_NXTBLK,
128 .size = SZ_4M,
129 .mask_flags = 0,
130 },
131 /* file system */
132 {
133 .name = "filesystem",
134 .offset = MTDPART_OFS_NXTBLK,
135 .size = MTDPART_SIZ_FULL,
136 .mask_flags = 0,
137 }
138 };
139
140 static struct davinci_nand_pdata nand_config = {
141 .mask_cle = 0x4000,
142 .mask_ale = 0x2000,
143 .parts = nand_partitions,
144 .nr_parts = ARRAY_SIZE(nand_partitions),
145 .ecc_mode = NAND_ECC_HW,
146 .bbt_options = NAND_BBT_USE_FLASH,
147 .ecc_bits = 1,
148 };
149
150 static struct davinci_uart_config serial_config __initconst = {
151 .enabled_uarts = BIT(1),
152 };
153
154 static const uint32_t keymap[] = {
155 KEY(0, 0, KEY_NUMERIC_1),
156 KEY(0, 1, KEY_NUMERIC_2),
157 KEY(0, 2, KEY_NUMERIC_3),
158 KEY(0, 3, KEY_FN_F1),
159 KEY(0, 4, KEY_MENU),
160
161 KEY(1, 0, KEY_NUMERIC_4),
162 KEY(1, 1, KEY_NUMERIC_5),
163 KEY(1, 2, KEY_NUMERIC_6),
164 KEY(1, 3, KEY_UP),
165 KEY(1, 4, KEY_FN_F2),
166
167 KEY(2, 0, KEY_NUMERIC_7),
168 KEY(2, 1, KEY_NUMERIC_8),
169 KEY(2, 2, KEY_NUMERIC_9),
170 KEY(2, 3, KEY_LEFT),
171 KEY(2, 4, KEY_ENTER),
172
173 KEY(3, 0, KEY_NUMERIC_STAR),
174 KEY(3, 1, KEY_NUMERIC_0),
175 KEY(3, 2, KEY_NUMERIC_POUND),
176 KEY(3, 3, KEY_DOWN),
177 KEY(3, 4, KEY_RIGHT),
178
179 KEY(4, 0, KEY_FN_F3),
180 KEY(4, 1, KEY_FN_F4),
181 KEY(4, 2, KEY_MUTE),
182 KEY(4, 3, KEY_HOME),
183 KEY(4, 4, KEY_BACK),
184
185 KEY(5, 0, KEY_VOLUMEDOWN),
186 KEY(5, 1, KEY_VOLUMEUP),
187 KEY(5, 2, KEY_F1),
188 KEY(5, 3, KEY_F2),
189 KEY(5, 4, KEY_F3),
190 };
191
192 static const struct matrix_keymap_data keymap_data = {
193 .keymap = keymap,
194 .keymap_size = ARRAY_SIZE(keymap),
195 };
196
197 static struct matrix_keypad_platform_data keypad_config = {
198 .keymap_data = &keymap_data,
199 .num_row_gpios = 6,
200 .num_col_gpios = 5,
201 .debounce_ms = 0, /* minimum */
202 .active_low = 0, /* pull up realization */
203 .no_autorepeat = 0,
204 };
205
spi_select_device(int cs)206 static void spi_select_device(int cs)
207 {
208 static int gpio;
209
210 if (!gpio) {
211 int ret;
212 ret = gpio_request(EVM_SPI_CS_GPIO, "spi chipsel");
213 if (ret < 0) {
214 pr_err("cannot open spi chipsel gpio\n");
215 gpio = -ENOSYS;
216 return;
217 } else {
218 gpio = EVM_SPI_CS_GPIO;
219 gpio_direction_output(gpio, 0);
220 }
221 }
222
223 if (gpio < 0)
224 return;
225
226 return gpio_set_value(gpio, cs ? 1 : 0);
227 }
228
229 static struct ti_ssp_spi_data spi_master_data = {
230 .num_cs = 2,
231 .select = spi_select_device,
232 .iosel = SSP_PIN_SEL(0, SSP_CLOCK) | SSP_PIN_SEL(1, SSP_DATA) |
233 SSP_PIN_SEL(2, SSP_CHIPSEL) | SSP_PIN_SEL(3, SSP_IN) |
234 SSP_INPUT_SEL(3),
235 };
236
237 static struct ti_ssp_data ssp_config = {
238 .out_clock = 250 * 1000,
239 .dev_data = {
240 [1] = {
241 .dev_name = "ti-ssp-spi",
242 .pdata = &spi_master_data,
243 .pdata_size = sizeof(spi_master_data),
244 },
245 },
246 };
247
248 static struct tnetv107x_device_info evm_device_info __initconst = {
249 .serial_config = &serial_config,
250 .mmc_config[1] = &mmc_config, /* controller 1 */
251 .nand_config[0] = &nand_config, /* chip select 0 */
252 .keypad_config = &keypad_config,
253 .ssp_config = &ssp_config,
254 };
255
256 static struct spi_board_info spi_info[] __initconst = {
257 };
258
tnetv107x_evm_board_init(void)259 static __init void tnetv107x_evm_board_init(void)
260 {
261 davinci_cfg_reg_list(sdio1_pins);
262 davinci_cfg_reg_list(uart1_pins);
263 davinci_cfg_reg_list(ssp_pins);
264
265 tnetv107x_devices_init(&evm_device_info);
266
267 spi_register_board_info(spi_info, ARRAY_SIZE(spi_info));
268 }
269
270 #ifdef CONFIG_SERIAL_8250_CONSOLE
tnetv107x_evm_console_init(void)271 static int __init tnetv107x_evm_console_init(void)
272 {
273 return add_preferred_console("ttyS", 0, "115200");
274 }
275 console_initcall(tnetv107x_evm_console_init);
276 #endif
277
278 MACHINE_START(TNETV107X, "TNETV107X EVM")
279 .atag_offset = 0x100,
280 .map_io = tnetv107x_init,
281 .init_irq = cp_intc_init,
282 .init_time = davinci_timer_init,
283 .init_machine = tnetv107x_evm_board_init,
284 .init_late = davinci_init_late,
285 .dma_zone_size = SZ_128M,
286 .restart = tnetv107x_restart,
287 MACHINE_END
288