1 /*
2 * TI DaVinci EVM board support
3 *
4 * Author: Kevin Hilman, Deep Root Systems, LLC
5 *
6 * 2007 (c) MontaVista Software, Inc. This file is licensed under
7 * the terms of the GNU General Public License version 2. This program
8 * is licensed "as is" without any warranty of any kind, whether express
9 * or implied.
10 */
11 #include <linux/kernel.h>
12 #include <linux/init.h>
13 #include <linux/err.h>
14 #include <linux/platform_device.h>
15 #include <linux/mtd/mtd.h>
16 #include <linux/mtd/partitions.h>
17 #include <linux/mtd/nand.h>
18 #include <linux/i2c.h>
19 #include <linux/gpio.h>
20 #include <linux/clk.h>
21 #include <linux/videodev2.h>
22 #include <media/tvp514x.h>
23 #include <linux/spi/spi.h>
24 #include <linux/spi/eeprom.h>
25
26 #include <asm/mach-types.h>
27 #include <asm/mach/arch.h>
28
29 #include <mach/dm355.h>
30 #include <mach/i2c.h>
31 #include <mach/serial.h>
32 #include <mach/nand.h>
33 #include <mach/mmc.h>
34 #include <mach/usb.h>
35
36 /* NOTE: this is geared for the standard config, with a socketed
37 * 2 GByte Micron NAND (MT29F16G08FAA) using 128KB sectors. If you
38 * swap chips, maybe with a different block size, partitioning may
39 * need to be changed.
40 */
41 #define NAND_BLOCK_SIZE SZ_128K
42
43 static struct mtd_partition davinci_nand_partitions[] = {
44 {
45 /* UBL (a few copies) plus U-Boot */
46 .name = "bootloader",
47 .offset = 0,
48 .size = 15 * NAND_BLOCK_SIZE,
49 .mask_flags = MTD_WRITEABLE, /* force read-only */
50 }, {
51 /* U-Boot environment */
52 .name = "params",
53 .offset = MTDPART_OFS_APPEND,
54 .size = 1 * NAND_BLOCK_SIZE,
55 .mask_flags = 0,
56 }, {
57 .name = "kernel",
58 .offset = MTDPART_OFS_APPEND,
59 .size = SZ_4M,
60 .mask_flags = 0,
61 }, {
62 .name = "filesystem1",
63 .offset = MTDPART_OFS_APPEND,
64 .size = SZ_512M,
65 .mask_flags = 0,
66 }, {
67 .name = "filesystem2",
68 .offset = MTDPART_OFS_APPEND,
69 .size = MTDPART_SIZ_FULL,
70 .mask_flags = 0,
71 }
72 /* two blocks with bad block table (and mirror) at the end */
73 };
74
75 static struct davinci_nand_pdata davinci_nand_data = {
76 .mask_chipsel = BIT(14),
77 .parts = davinci_nand_partitions,
78 .nr_parts = ARRAY_SIZE(davinci_nand_partitions),
79 .ecc_mode = NAND_ECC_HW,
80 .bbt_options = NAND_BBT_USE_FLASH,
81 .ecc_bits = 4,
82 };
83
84 static struct resource davinci_nand_resources[] = {
85 {
86 .start = DM355_ASYNC_EMIF_DATA_CE0_BASE,
87 .end = DM355_ASYNC_EMIF_DATA_CE0_BASE + SZ_32M - 1,
88 .flags = IORESOURCE_MEM,
89 }, {
90 .start = DM355_ASYNC_EMIF_CONTROL_BASE,
91 .end = DM355_ASYNC_EMIF_CONTROL_BASE + SZ_4K - 1,
92 .flags = IORESOURCE_MEM,
93 },
94 };
95
96 static struct platform_device davinci_nand_device = {
97 .name = "davinci_nand",
98 .id = 0,
99
100 .num_resources = ARRAY_SIZE(davinci_nand_resources),
101 .resource = davinci_nand_resources,
102
103 .dev = {
104 .platform_data = &davinci_nand_data,
105 },
106 };
107
108 static struct davinci_i2c_platform_data i2c_pdata = {
109 .bus_freq = 400 /* kHz */,
110 .bus_delay = 0 /* usec */,
111 .sda_pin = 15,
112 .scl_pin = 14,
113 };
114
115 static struct snd_platform_data dm355_evm_snd_data;
116
117 static int dm355evm_mmc_gpios = -EINVAL;
118
dm355evm_mmcsd_gpios(unsigned gpio)119 static void dm355evm_mmcsd_gpios(unsigned gpio)
120 {
121 gpio_request(gpio + 0, "mmc0_ro");
122 gpio_request(gpio + 1, "mmc0_cd");
123 gpio_request(gpio + 2, "mmc1_ro");
124 gpio_request(gpio + 3, "mmc1_cd");
125
126 /* we "know" these are input-only so we don't
127 * need to call gpio_direction_input()
128 */
129
130 dm355evm_mmc_gpios = gpio;
131 }
132
133 static struct i2c_board_info dm355evm_i2c_info[] = {
134 { I2C_BOARD_INFO("dm355evm_msp", 0x25),
135 .platform_data = dm355evm_mmcsd_gpios,
136 },
137 /* { plus irq }, */
138 { I2C_BOARD_INFO("tlv320aic33", 0x1b), },
139 };
140
evm_init_i2c(void)141 static void __init evm_init_i2c(void)
142 {
143 davinci_init_i2c(&i2c_pdata);
144
145 gpio_request(5, "dm355evm_msp");
146 gpio_direction_input(5);
147 dm355evm_i2c_info[0].irq = gpio_to_irq(5);
148
149 i2c_register_board_info(1, dm355evm_i2c_info,
150 ARRAY_SIZE(dm355evm_i2c_info));
151 }
152
153 static struct resource dm355evm_dm9000_rsrc[] = {
154 {
155 /* addr */
156 .start = 0x04014000,
157 .end = 0x04014001,
158 .flags = IORESOURCE_MEM,
159 }, {
160 /* data */
161 .start = 0x04014002,
162 .end = 0x04014003,
163 .flags = IORESOURCE_MEM,
164 }, {
165 .flags = IORESOURCE_IRQ
166 | IORESOURCE_IRQ_HIGHEDGE /* rising (active high) */,
167 },
168 };
169
170 static struct platform_device dm355evm_dm9000 = {
171 .name = "dm9000",
172 .id = -1,
173 .resource = dm355evm_dm9000_rsrc,
174 .num_resources = ARRAY_SIZE(dm355evm_dm9000_rsrc),
175 };
176
177 static struct tvp514x_platform_data tvp5146_pdata = {
178 .clk_polarity = 0,
179 .hs_polarity = 1,
180 .vs_polarity = 1
181 };
182
183 #define TVP514X_STD_ALL (V4L2_STD_NTSC | V4L2_STD_PAL)
184 /* Inputs available at the TVP5146 */
185 static struct v4l2_input tvp5146_inputs[] = {
186 {
187 .index = 0,
188 .name = "Composite",
189 .type = V4L2_INPUT_TYPE_CAMERA,
190 .std = TVP514X_STD_ALL,
191 },
192 {
193 .index = 1,
194 .name = "S-Video",
195 .type = V4L2_INPUT_TYPE_CAMERA,
196 .std = TVP514X_STD_ALL,
197 },
198 };
199
200 /*
201 * this is the route info for connecting each input to decoder
202 * ouput that goes to vpfe. There is a one to one correspondence
203 * with tvp5146_inputs
204 */
205 static struct vpfe_route tvp5146_routes[] = {
206 {
207 .input = INPUT_CVBS_VI2B,
208 .output = OUTPUT_10BIT_422_EMBEDDED_SYNC,
209 },
210 {
211 .input = INPUT_SVIDEO_VI2C_VI1C,
212 .output = OUTPUT_10BIT_422_EMBEDDED_SYNC,
213 },
214 };
215
216 static struct vpfe_subdev_info vpfe_sub_devs[] = {
217 {
218 .name = "tvp5146",
219 .grp_id = 0,
220 .num_inputs = ARRAY_SIZE(tvp5146_inputs),
221 .inputs = tvp5146_inputs,
222 .routes = tvp5146_routes,
223 .can_route = 1,
224 .ccdc_if_params = {
225 .if_type = VPFE_BT656,
226 .hdpol = VPFE_PINPOL_POSITIVE,
227 .vdpol = VPFE_PINPOL_POSITIVE,
228 },
229 .board_info = {
230 I2C_BOARD_INFO("tvp5146", 0x5d),
231 .platform_data = &tvp5146_pdata,
232 },
233 }
234 };
235
236 static struct vpfe_config vpfe_cfg = {
237 .num_subdevs = ARRAY_SIZE(vpfe_sub_devs),
238 .i2c_adapter_id = 1,
239 .sub_devs = vpfe_sub_devs,
240 .card_name = "DM355 EVM",
241 .ccdc = "DM355 CCDC",
242 };
243
244 static struct platform_device *davinci_evm_devices[] __initdata = {
245 &dm355evm_dm9000,
246 &davinci_nand_device,
247 };
248
249 static struct davinci_uart_config uart_config __initdata = {
250 .enabled_uarts = (1 << 0),
251 };
252
dm355_evm_map_io(void)253 static void __init dm355_evm_map_io(void)
254 {
255 /* setup input configuration for VPFE input devices */
256 dm355_set_vpfe_config(&vpfe_cfg);
257 dm355_init();
258 }
259
dm355evm_mmc_get_cd(int module)260 static int dm355evm_mmc_get_cd(int module)
261 {
262 if (!gpio_is_valid(dm355evm_mmc_gpios))
263 return -ENXIO;
264 /* low == card present */
265 return !gpio_get_value_cansleep(dm355evm_mmc_gpios + 2 * module + 1);
266 }
267
dm355evm_mmc_get_ro(int module)268 static int dm355evm_mmc_get_ro(int module)
269 {
270 if (!gpio_is_valid(dm355evm_mmc_gpios))
271 return -ENXIO;
272 /* high == card's write protect switch active */
273 return gpio_get_value_cansleep(dm355evm_mmc_gpios + 2 * module + 0);
274 }
275
276 static struct davinci_mmc_config dm355evm_mmc_config = {
277 .get_cd = dm355evm_mmc_get_cd,
278 .get_ro = dm355evm_mmc_get_ro,
279 .wires = 4,
280 .max_freq = 50000000,
281 .caps = MMC_CAP_MMC_HIGHSPEED | MMC_CAP_SD_HIGHSPEED,
282 .version = MMC_CTLR_VERSION_1,
283 };
284
285 /* Don't connect anything to J10 unless you're only using USB host
286 * mode *and* have to do so with some kind of gender-bender. If
287 * you have proper Mini-B or Mini-A cables (or Mini-A adapters)
288 * the ID pin won't need any help.
289 */
290 #ifdef CONFIG_USB_MUSB_PERIPHERAL
291 #define USB_ID_VALUE 0 /* ID pulled high; *should* float */
292 #else
293 #define USB_ID_VALUE 1 /* ID pulled low */
294 #endif
295
296 static struct spi_eeprom at25640a = {
297 .byte_len = SZ_64K / 8,
298 .name = "at25640a",
299 .page_size = 32,
300 .flags = EE_ADDR2,
301 };
302
303 static struct spi_board_info dm355_evm_spi_info[] __initconst = {
304 {
305 .modalias = "at25",
306 .platform_data = &at25640a,
307 .max_speed_hz = 10 * 1000 * 1000, /* at 3v3 */
308 .bus_num = 0,
309 .chip_select = 0,
310 .mode = SPI_MODE_0,
311 },
312 };
313
dm355_evm_init(void)314 static __init void dm355_evm_init(void)
315 {
316 struct clk *aemif;
317
318 gpio_request(1, "dm9000");
319 gpio_direction_input(1);
320 dm355evm_dm9000_rsrc[2].start = gpio_to_irq(1);
321
322 aemif = clk_get(&dm355evm_dm9000.dev, "aemif");
323 if (IS_ERR(aemif))
324 WARN("%s: unable to get AEMIF clock\n", __func__);
325 else
326 clk_enable(aemif);
327
328 platform_add_devices(davinci_evm_devices,
329 ARRAY_SIZE(davinci_evm_devices));
330 evm_init_i2c();
331 davinci_serial_init(&uart_config);
332
333 /* NOTE: NAND flash timings set by the UBL are slower than
334 * needed by MT29F16G08FAA chips ... EMIF.A1CR is 0x40400204
335 * but could be 0x0400008c for about 25% faster page reads.
336 */
337
338 gpio_request(2, "usb_id_toggle");
339 gpio_direction_output(2, USB_ID_VALUE);
340 /* irlml6401 switches over 1A in under 8 msec */
341 davinci_setup_usb(1000, 8);
342
343 davinci_setup_mmc(0, &dm355evm_mmc_config);
344 davinci_setup_mmc(1, &dm355evm_mmc_config);
345
346 dm355_init_spi0(BIT(0), dm355_evm_spi_info,
347 ARRAY_SIZE(dm355_evm_spi_info));
348
349 /* DM335 EVM uses ASP1; line-out is a stereo mini-jack */
350 dm355_init_asp1(ASP1_TX_EVT_EN | ASP1_RX_EVT_EN, &dm355_evm_snd_data);
351 }
352
353 MACHINE_START(DAVINCI_DM355_EVM, "DaVinci DM355 EVM")
354 .atag_offset = 0x100,
355 .map_io = dm355_evm_map_io,
356 .init_irq = davinci_irq_init,
357 .timer = &davinci_timer,
358 .init_machine = dm355_evm_init,
359 .dma_zone_size = SZ_128M,
360 .restart = davinci_restart,
361 MACHINE_END
362