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treewide: remove redundant IS_ERR() before error code check
[linux/fpc-iii.git] / arch / arm / mach-davinci / board-dm365-evm.c
blob150a36f333df0bd3583e725d6fe9c478b5c13923
1 /*
2 * TI DaVinci DM365 EVM board support
3 *
4 * Copyright (C) 2009 Texas Instruments Incorporated
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/err.h>
18 #include <linux/i2c.h>
19 #include <linux/io.h>
20 #include <linux/clk.h>
21 #include <linux/property.h>
22 #include <linux/leds.h>
23 #include <linux/mtd/mtd.h>
24 #include <linux/mtd/partitions.h>
25 #include <linux/slab.h>
26 #include <linux/mtd/rawnand.h>
27 #include <linux/nvmem-provider.h>
28 #include <linux/input.h>
29 #include <linux/spi/spi.h>
30 #include <linux/spi/eeprom.h>
31 #include <linux/v4l2-dv-timings.h>
32 #include <linux/platform_data/ti-aemif.h>
33
34 #include <asm/mach-types.h>
35 #include <asm/mach/arch.h>
36
37 #include <mach/mux.h>
38 #include <mach/common.h>
39 #include <linux/platform_data/i2c-davinci.h>
40 #include <mach/serial.h>
41 #include <linux/platform_data/mmc-davinci.h>
42 #include <linux/platform_data/mtd-davinci.h>
43 #include <linux/platform_data/keyscan-davinci.h>
44
45 #include <media/i2c/ths7303.h>
46 #include <media/i2c/tvp514x.h>
47
48 #include "davinci.h"
49
50 static inline int have_imager(void)
51 {
52 /* REVISIT when it's supported, trigger via Kconfig */
53 return 0;
54 }
55
56 static inline int have_tvp7002(void)
57 {
58 /* REVISIT when it's supported, trigger via Kconfig */
59 return 0;
60 }
61
62 #define DM365_EVM_PHY_ID "davinci_mdio-0:01"
63 /*
64 * A MAX-II CPLD is used for various board control functions.
65 */
66 #define CPLD_OFFSET(a13a8,a2a1) (((a13a8) << 10) + ((a2a1) << 3))
67
68 #define CPLD_VERSION CPLD_OFFSET(0,0) /* r/o */
69 #define CPLD_TEST CPLD_OFFSET(0,1)
70 #define CPLD_LEDS CPLD_OFFSET(0,2)
71 #define CPLD_MUX CPLD_OFFSET(0,3)
72 #define CPLD_SWITCH CPLD_OFFSET(1,0) /* r/o */
73 #define CPLD_POWER CPLD_OFFSET(1,1)
74 #define CPLD_VIDEO CPLD_OFFSET(1,2)
75 #define CPLD_CARDSTAT CPLD_OFFSET(1,3) /* r/o */
76
77 #define CPLD_DILC_OUT CPLD_OFFSET(2,0)
78 #define CPLD_DILC_IN CPLD_OFFSET(2,1) /* r/o */
79
80 #define CPLD_IMG_DIR0 CPLD_OFFSET(2,2)
81 #define CPLD_IMG_MUX0 CPLD_OFFSET(2,3)
82 #define CPLD_IMG_MUX1 CPLD_OFFSET(3,0)
83 #define CPLD_IMG_DIR1 CPLD_OFFSET(3,1)
84 #define CPLD_IMG_MUX2 CPLD_OFFSET(3,2)
85 #define CPLD_IMG_MUX3 CPLD_OFFSET(3,3)
86 #define CPLD_IMG_DIR2 CPLD_OFFSET(4,0)
87 #define CPLD_IMG_MUX4 CPLD_OFFSET(4,1)
88 #define CPLD_IMG_MUX5 CPLD_OFFSET(4,2)
89
90 #define CPLD_RESETS CPLD_OFFSET(4,3)
91
92 #define CPLD_CCD_DIR1 CPLD_OFFSET(0x3e,0)
93 #define CPLD_CCD_IO1 CPLD_OFFSET(0x3e,1)
94 #define CPLD_CCD_DIR2 CPLD_OFFSET(0x3e,2)
95 #define CPLD_CCD_IO2 CPLD_OFFSET(0x3e,3)
96 #define CPLD_CCD_DIR3 CPLD_OFFSET(0x3f,0)
97 #define CPLD_CCD_IO3 CPLD_OFFSET(0x3f,1)
98
99 static void __iomem *cpld;
100
101
102 /* NOTE: this is geared for the standard config, with a socketed
103 * 2 GByte Micron NAND (MT29F16G08FAA) using 128KB sectors. If you
104 * swap chips with a different block size, partitioning will
105 * need to be changed. This NAND chip MT29F16G08FAA is the default
106 * NAND shipped with the Spectrum Digital DM365 EVM
107 */
108 #define NAND_BLOCK_SIZE SZ_128K
109
110 static struct mtd_partition davinci_nand_partitions[] = {
111 {
112 /* UBL (a few copies) plus U-Boot */
113 .name = "bootloader",
114 .offset = 0,
115 .size = 30 * NAND_BLOCK_SIZE,
116 .mask_flags = MTD_WRITEABLE, /* force read-only */
117 }, {
118 /* U-Boot environment */
119 .name = "params",
120 .offset = MTDPART_OFS_APPEND,
121 .size = 2 * NAND_BLOCK_SIZE,
122 .mask_flags = 0,
123 }, {
124 .name = "kernel",
125 .offset = MTDPART_OFS_APPEND,
126 .size = SZ_4M,
127 .mask_flags = 0,
128 }, {
129 .name = "filesystem1",
130 .offset = MTDPART_OFS_APPEND,
131 .size = SZ_512M,
132 .mask_flags = 0,
133 }, {
134 .name = "filesystem2",
135 .offset = MTDPART_OFS_APPEND,
136 .size = MTDPART_SIZ_FULL,
137 .mask_flags = 0,
138 }
139 /* two blocks with bad block table (and mirror) at the end */
140 };
141
142 static struct davinci_nand_pdata davinci_nand_data = {
143 .core_chipsel = 0,
144 .mask_chipsel = BIT(14),
145 .parts = davinci_nand_partitions,
146 .nr_parts = ARRAY_SIZE(davinci_nand_partitions),
147 .ecc_mode = NAND_ECC_HW,
148 .bbt_options = NAND_BBT_USE_FLASH,
149 .ecc_bits = 4,
150 };
151
152 static struct resource davinci_nand_resources[] = {
153 {
154 .start = DM365_ASYNC_EMIF_DATA_CE0_BASE,
155 .end = DM365_ASYNC_EMIF_DATA_CE0_BASE + SZ_32M - 1,
156 .flags = IORESOURCE_MEM,
157 }, {
158 .start = DM365_ASYNC_EMIF_CONTROL_BASE,
159 .end = DM365_ASYNC_EMIF_CONTROL_BASE + SZ_4K - 1,
160 .flags = IORESOURCE_MEM,
161 },
162 };
163
164 static struct platform_device davinci_aemif_devices[] = {
165 {
166 .name = "davinci_nand",
167 .id = 0,
168 .num_resources = ARRAY_SIZE(davinci_nand_resources),
169 .resource = davinci_nand_resources,
170 .dev = {
171 .platform_data = &davinci_nand_data,
172 },
173 }
174 };
175
176 static struct resource davinci_aemif_resources[] = {
177 {
178 .start = DM365_ASYNC_EMIF_CONTROL_BASE,
179 .end = DM365_ASYNC_EMIF_CONTROL_BASE + SZ_4K - 1,
180 .flags = IORESOURCE_MEM,
181 },
182 };
183
184 static struct aemif_abus_data da850_evm_aemif_abus_data[] = {
185 {
186 .cs = 1,
187 },
188 };
189
190 static struct aemif_platform_data davinci_aemif_pdata = {
191 .abus_data = da850_evm_aemif_abus_data,
192 .num_abus_data = ARRAY_SIZE(da850_evm_aemif_abus_data),
193 .sub_devices = davinci_aemif_devices,
194 .num_sub_devices = ARRAY_SIZE(davinci_aemif_devices),
195 };
196
197 static struct platform_device davinci_aemif_device = {
198 .name = "ti-aemif",
199 .id = -1,
200 .dev = {
201 .platform_data = &davinci_aemif_pdata,
202 },
203 .resource = davinci_aemif_resources,
204 .num_resources = ARRAY_SIZE(davinci_aemif_resources),
205 };
206
207 static struct nvmem_cell_info davinci_nvmem_cells[] = {
208 {
209 .name = "macaddr",
210 .offset = 0x7f00,
211 .bytes = ETH_ALEN,
212 }
213 };
214
215 static struct nvmem_cell_table davinci_nvmem_cell_table = {
216 .nvmem_name = "1-00500",
217 .cells = davinci_nvmem_cells,
218 .ncells = ARRAY_SIZE(davinci_nvmem_cells),
219 };
220
221 static struct nvmem_cell_lookup davinci_nvmem_cell_lookup = {
222 .nvmem_name = "1-00500",
223 .cell_name = "macaddr",
224 .dev_id = "davinci_emac.1",
225 .con_id = "mac-address",
226 };
227
228 static const struct property_entry eeprom_properties[] = {
229 PROPERTY_ENTRY_U32("pagesize", 64),
230 { }
231 };
232
233 static struct i2c_board_info i2c_info[] = {
234 {
235 I2C_BOARD_INFO("24c256", 0x50),
236 .properties = eeprom_properties,
237 },
238 {
239 I2C_BOARD_INFO("tlv320aic3x", 0x18),
240 },
241 };
242
243 static struct davinci_i2c_platform_data i2c_pdata = {
244 .bus_freq = 400 /* kHz */,
245 .bus_delay = 0 /* usec */,
246 };
247
248 static int dm365evm_keyscan_enable(struct device *dev)
249 {
250 return davinci_cfg_reg(DM365_KEYSCAN);
251 }
252
253 static unsigned short dm365evm_keymap[] = {
254 KEY_KP2,
255 KEY_LEFT,
256 KEY_EXIT,
257 KEY_DOWN,
258 KEY_ENTER,
259 KEY_UP,
260 KEY_KP1,
261 KEY_RIGHT,
262 KEY_MENU,
263 KEY_RECORD,
264 KEY_REWIND,
265 KEY_KPMINUS,
266 KEY_STOP,
267 KEY_FASTFORWARD,
268 KEY_KPPLUS,
269 KEY_PLAYPAUSE,
270 0
271 };
272
273 static struct davinci_ks_platform_data dm365evm_ks_data = {
274 .device_enable = dm365evm_keyscan_enable,
275 .keymap = dm365evm_keymap,
276 .keymapsize = ARRAY_SIZE(dm365evm_keymap),
277 .rep = 1,
278 /* Scan period = strobe + interval */
279 .strobe = 0x5,
280 .interval = 0x2,
281 .matrix_type = DAVINCI_KEYSCAN_MATRIX_4X4,
282 };
283
284 static int cpld_mmc_get_cd(int module)
285 {
286 if (!cpld)
287 return -ENXIO;
288
289 /* low == card present */
290 return !(__raw_readb(cpld + CPLD_CARDSTAT) & BIT(module ? 4 : 0));
291 }
292
293 static int cpld_mmc_get_ro(int module)
294 {
295 if (!cpld)
296 return -ENXIO;
297
298 /* high == card's write protect switch active */
299 return !!(__raw_readb(cpld + CPLD_CARDSTAT) & BIT(module ? 5 : 1));
300 }
301
302 static struct davinci_mmc_config dm365evm_mmc_config = {
303 .get_cd = cpld_mmc_get_cd,
304 .get_ro = cpld_mmc_get_ro,
305 .wires = 4,
306 .max_freq = 50000000,
307 .caps = MMC_CAP_MMC_HIGHSPEED | MMC_CAP_SD_HIGHSPEED,
308 };
309
310 static void dm365evm_emac_configure(void)
311 {
312 /*
313 * EMAC pins are multiplexed with GPIO and UART
314 * Further details are available at the DM365 ARM
315 * Subsystem Users Guide(sprufg5.pdf) pages 125 - 127
316 */
317 davinci_cfg_reg(DM365_EMAC_TX_EN);
318 davinci_cfg_reg(DM365_EMAC_TX_CLK);
319 davinci_cfg_reg(DM365_EMAC_COL);
320 davinci_cfg_reg(DM365_EMAC_TXD3);
321 davinci_cfg_reg(DM365_EMAC_TXD2);
322 davinci_cfg_reg(DM365_EMAC_TXD1);
323 davinci_cfg_reg(DM365_EMAC_TXD0);
324 davinci_cfg_reg(DM365_EMAC_RXD3);
325 davinci_cfg_reg(DM365_EMAC_RXD2);
326 davinci_cfg_reg(DM365_EMAC_RXD1);
327 davinci_cfg_reg(DM365_EMAC_RXD0);
328 davinci_cfg_reg(DM365_EMAC_RX_CLK);
329 davinci_cfg_reg(DM365_EMAC_RX_DV);
330 davinci_cfg_reg(DM365_EMAC_RX_ER);
331 davinci_cfg_reg(DM365_EMAC_CRS);
332 davinci_cfg_reg(DM365_EMAC_MDIO);
333 davinci_cfg_reg(DM365_EMAC_MDCLK);
334
335 /*
336 * EMAC interrupts are multiplexed with GPIO interrupts
337 * Details are available at the DM365 ARM
338 * Subsystem Users Guide(sprufg5.pdf) pages 133 - 134
339 */
340 davinci_cfg_reg(DM365_INT_EMAC_RXTHRESH);
341 davinci_cfg_reg(DM365_INT_EMAC_RXPULSE);
342 davinci_cfg_reg(DM365_INT_EMAC_TXPULSE);
343 davinci_cfg_reg(DM365_INT_EMAC_MISCPULSE);
344 }
345
346 static void dm365evm_mmc_configure(void)
347 {
348 /*
349 * MMC/SD pins are multiplexed with GPIO and EMIF
350 * Further details are available at the DM365 ARM
351 * Subsystem Users Guide(sprufg5.pdf) pages 118, 128 - 131
352 */
353 davinci_cfg_reg(DM365_SD1_CLK);
354 davinci_cfg_reg(DM365_SD1_CMD);
355 davinci_cfg_reg(DM365_SD1_DATA3);
356 davinci_cfg_reg(DM365_SD1_DATA2);
357 davinci_cfg_reg(DM365_SD1_DATA1);
358 davinci_cfg_reg(DM365_SD1_DATA0);
359 }
360
361 static struct tvp514x_platform_data tvp5146_pdata = {
362 .clk_polarity = 0,
363 .hs_polarity = 1,
364 .vs_polarity = 1
365 };
366
367 #define TVP514X_STD_ALL (V4L2_STD_NTSC | V4L2_STD_PAL)
368 /* Inputs available at the TVP5146 */
369 static struct v4l2_input tvp5146_inputs[] = {
370 {
371 .index = 0,
372 .name = "Composite",
373 .type = V4L2_INPUT_TYPE_CAMERA,
374 .std = TVP514X_STD_ALL,
375 },
376 {
377 .index = 1,
378 .name = "S-Video",
379 .type = V4L2_INPUT_TYPE_CAMERA,
380 .std = TVP514X_STD_ALL,
381 },
382 };
383
384 /*
385 * this is the route info for connecting each input to decoder
386 * ouput that goes to vpfe. There is a one to one correspondence
387 * with tvp5146_inputs
388 */
389 static struct vpfe_route tvp5146_routes[] = {
390 {
391 .input = INPUT_CVBS_VI2B,
392 .output = OUTPUT_10BIT_422_EMBEDDED_SYNC,
393 },
394 {
395 .input = INPUT_SVIDEO_VI2C_VI1C,
396 .output = OUTPUT_10BIT_422_EMBEDDED_SYNC,
397 },
398 };
399
400 static struct vpfe_subdev_info vpfe_sub_devs[] = {
401 {
402 .name = "tvp5146",
403 .grp_id = 0,
404 .num_inputs = ARRAY_SIZE(tvp5146_inputs),
405 .inputs = tvp5146_inputs,
406 .routes = tvp5146_routes,
407 .can_route = 1,
408 .ccdc_if_params = {
409 .if_type = VPFE_BT656,
410 .hdpol = VPFE_PINPOL_POSITIVE,
411 .vdpol = VPFE_PINPOL_POSITIVE,
412 },
413 .board_info = {
414 I2C_BOARD_INFO("tvp5146", 0x5d),
415 .platform_data = &tvp5146_pdata,
416 },
417 },
418 };
419
420 static struct vpfe_config vpfe_cfg = {
421 .num_subdevs = ARRAY_SIZE(vpfe_sub_devs),
422 .sub_devs = vpfe_sub_devs,
423 .i2c_adapter_id = 1,
424 .card_name = "DM365 EVM",
425 .ccdc = "ISIF",
426 };
427
428 /* venc standards timings */
429 static struct vpbe_enc_mode_info dm365evm_enc_std_timing[] = {
430 {
431 .name = "ntsc",
432 .timings_type = VPBE_ENC_STD,
433 .std_id = V4L2_STD_NTSC,
434 .interlaced = 1,
435 .xres = 720,
436 .yres = 480,
437 .aspect = {11, 10},
438 .fps = {30000, 1001},
439 .left_margin = 0x79,
440 .upper_margin = 0x10,
441 },
442 {
443 .name = "pal",
444 .timings_type = VPBE_ENC_STD,
445 .std_id = V4L2_STD_PAL,
446 .interlaced = 1,
447 .xres = 720,
448 .yres = 576,
449 .aspect = {54, 59},
450 .fps = {25, 1},
451 .left_margin = 0x7E,
452 .upper_margin = 0x16,
453 },
454 };
455
456 /* venc dv timings */
457 static struct vpbe_enc_mode_info dm365evm_enc_preset_timing[] = {
458 {
459 .name = "480p59_94",
460 .timings_type = VPBE_ENC_DV_TIMINGS,
461 .dv_timings = V4L2_DV_BT_CEA_720X480P59_94,
462 .interlaced = 0,
463 .xres = 720,
464 .yres = 480,
465 .aspect = {1, 1},
466 .fps = {5994, 100},
467 .left_margin = 0x8F,
468 .upper_margin = 0x2D,
469 },
470 {
471 .name = "576p50",
472 .timings_type = VPBE_ENC_DV_TIMINGS,
473 .dv_timings = V4L2_DV_BT_CEA_720X576P50,
474 .interlaced = 0,
475 .xres = 720,
476 .yres = 576,
477 .aspect = {1, 1},
478 .fps = {50, 1},
479 .left_margin = 0x8C,
480 .upper_margin = 0x36,
481 },
482 {
483 .name = "720p60",
484 .timings_type = VPBE_ENC_DV_TIMINGS,
485 .dv_timings = V4L2_DV_BT_CEA_1280X720P60,
486 .interlaced = 0,
487 .xres = 1280,
488 .yres = 720,
489 .aspect = {1, 1},
490 .fps = {60, 1},
491 .left_margin = 0x117,
492 .right_margin = 70,
493 .upper_margin = 38,
494 .lower_margin = 3,
495 .hsync_len = 80,
496 .vsync_len = 5,
497 },
498 {
499 .name = "1080i60",
500 .timings_type = VPBE_ENC_DV_TIMINGS,
501 .dv_timings = V4L2_DV_BT_CEA_1920X1080I60,
502 .interlaced = 1,
503 .xres = 1920,
504 .yres = 1080,
505 .aspect = {1, 1},
506 .fps = {30, 1},
507 .left_margin = 0xc9,
508 .right_margin = 80,
509 .upper_margin = 30,
510 .lower_margin = 3,
511 .hsync_len = 88,
512 .vsync_len = 5,
513 },
514 };
515
516 #define VENC_STD_ALL (V4L2_STD_NTSC | V4L2_STD_PAL)
517
518 /*
519 * The outputs available from VPBE + ecnoders. Keep the
520 * the order same as that of encoders. First those from venc followed by that
521 * from encoders. Index in the output refers to index on a particular
522 * encoder.Driver uses this index to pass it to encoder when it supports more
523 * than one output. Application uses index of the array to set an output.
524 */
525 static struct vpbe_output dm365evm_vpbe_outputs[] = {
526 {
527 .output = {
528 .index = 0,
529 .name = "Composite",
530 .type = V4L2_OUTPUT_TYPE_ANALOG,
531 .std = VENC_STD_ALL,
532 .capabilities = V4L2_OUT_CAP_STD,
533 },
534 .subdev_name = DM365_VPBE_VENC_SUBDEV_NAME,
535 .default_mode = "ntsc",
536 .num_modes = ARRAY_SIZE(dm365evm_enc_std_timing),
537 .modes = dm365evm_enc_std_timing,
538 .if_params = MEDIA_BUS_FMT_FIXED,
539 },
540 {
541 .output = {
542 .index = 1,
543 .name = "Component",
544 .type = V4L2_OUTPUT_TYPE_ANALOG,
545 .capabilities = V4L2_OUT_CAP_DV_TIMINGS,
546 },
547 .subdev_name = DM365_VPBE_VENC_SUBDEV_NAME,
548 .default_mode = "480p59_94",
549 .num_modes = ARRAY_SIZE(dm365evm_enc_preset_timing),
550 .modes = dm365evm_enc_preset_timing,
551 .if_params = MEDIA_BUS_FMT_FIXED,
552 },
553 };
554
555 /*
556 * Amplifiers on the board
557 */
558 static struct ths7303_platform_data ths7303_pdata = {
559 .ch_1 = 3,
560 .ch_2 = 3,
561 .ch_3 = 3,
562 };
563
564 static struct amp_config_info vpbe_amp = {
565 .module_name = "ths7303",
566 .is_i2c = 1,
567 .board_info = {
568 I2C_BOARD_INFO("ths7303", 0x2c),
569 .platform_data = &ths7303_pdata,
570 }
571 };
572
573 static struct vpbe_config dm365evm_display_cfg = {
574 .module_name = "dm365-vpbe-display",
575 .i2c_adapter_id = 1,
576 .amp = &vpbe_amp,
577 .osd = {
578 .module_name = DM365_VPBE_OSD_SUBDEV_NAME,
579 },
580 .venc = {
581 .module_name = DM365_VPBE_VENC_SUBDEV_NAME,
582 },
583 .num_outputs = ARRAY_SIZE(dm365evm_vpbe_outputs),
584 .outputs = dm365evm_vpbe_outputs,
585 };
586
587 static void __init evm_init_i2c(void)
588 {
589 davinci_init_i2c(&i2c_pdata);
590 i2c_register_board_info(1, i2c_info, ARRAY_SIZE(i2c_info));
591 }
592
593 static inline int have_leds(void)
594 {
595 #ifdef CONFIG_LEDS_CLASS
596 return 1;
597 #else
598 return 0;
599 #endif
600 }
601
602 struct cpld_led {
603 struct led_classdev cdev;
604 u8 mask;
605 };
606
607 static const struct {
608 const char *name;
609 const char *trigger;
610 } cpld_leds[] = {
611 { "dm365evm::ds2", },
612 { "dm365evm::ds3", },
613 { "dm365evm::ds4", },
614 { "dm365evm::ds5", },
615 { "dm365evm::ds6", "nand-disk", },
616 { "dm365evm::ds7", "mmc1", },
617 { "dm365evm::ds8", "mmc0", },
618 { "dm365evm::ds9", "heartbeat", },
619 };
620
621 static void cpld_led_set(struct led_classdev *cdev, enum led_brightness b)
622 {
623 struct cpld_led *led = container_of(cdev, struct cpld_led, cdev);
624 u8 reg = __raw_readb(cpld + CPLD_LEDS);
625
626 if (b != LED_OFF)
627 reg &= ~led->mask;
628 else
629 reg |= led->mask;
630 __raw_writeb(reg, cpld + CPLD_LEDS);
631 }
632
633 static enum led_brightness cpld_led_get(struct led_classdev *cdev)
634 {
635 struct cpld_led *led = container_of(cdev, struct cpld_led, cdev);
636 u8 reg = __raw_readb(cpld + CPLD_LEDS);
637
638 return (reg & led->mask) ? LED_OFF : LED_FULL;
639 }
640
641 static int __init cpld_leds_init(void)
642 {
643 int i;
644
645 if (!have_leds() || !cpld)
646 return 0;
647
648 /* setup LEDs */
649 __raw_writeb(0xff, cpld + CPLD_LEDS);
650 for (i = 0; i < ARRAY_SIZE(cpld_leds); i++) {
651 struct cpld_led *led;
652
653 led = kzalloc(sizeof(*led), GFP_KERNEL);
654 if (!led)
655 break;
656
657 led->cdev.name = cpld_leds[i].name;
658 led->cdev.brightness_set = cpld_led_set;
659 led->cdev.brightness_get = cpld_led_get;
660 led->cdev.default_trigger = cpld_leds[i].trigger;
661 led->mask = BIT(i);
662
663 if (led_classdev_register(NULL, &led->cdev) < 0) {
664 kfree(led);
665 break;
666 }
667 }
668
669 return 0;
670 }
671 /* run after subsys_initcall() for LEDs */
672 fs_initcall(cpld_leds_init);
673
674
675 static void __init evm_init_cpld(void)
676 {
677 u8 mux, resets;
678 const char *label;
679 struct clk *aemif_clk;
680 int rc;
681
682 /* Make sure we can configure the CPLD through CS1. Then
683 * leave it on for later access to MMC and LED registers.
684 */
685 aemif_clk = clk_get(NULL, "aemif");
686 if (IS_ERR(aemif_clk))
687 return;
688 clk_prepare_enable(aemif_clk);
689
690 if (request_mem_region(DM365_ASYNC_EMIF_DATA_CE1_BASE, SECTION_SIZE,
691 "cpld") == NULL)
692 goto fail;
693 cpld = ioremap(DM365_ASYNC_EMIF_DATA_CE1_BASE, SECTION_SIZE);
694 if (!cpld) {
695 release_mem_region(DM365_ASYNC_EMIF_DATA_CE1_BASE,
696 SECTION_SIZE);
697 fail:
698 pr_err("ERROR: can't map CPLD\n");
699 clk_disable_unprepare(aemif_clk);
700 return;
701 }
702
703 /* External muxing for some signals */
704 mux = 0;
705
706 /* Read SW5 to set up NAND + keypad _or_ OneNAND (sync read).
707 * NOTE: SW4 bus width setting must match!
708 */
709 if ((__raw_readb(cpld + CPLD_SWITCH) & BIT(5)) == 0) {
710 /* external keypad mux */
711 mux |= BIT(7);
712
713 rc = platform_device_register(&davinci_aemif_device);
714 if (rc)
715 pr_warn("%s(): error registering the aemif device: %d\n",
716 __func__, rc);
717 } else {
718 /* no OneNAND support yet */
719 }
720
721 /* Leave external chips in reset when unused. */
722 resets = BIT(3) | BIT(2) | BIT(1) | BIT(0);
723
724 /* Static video input config with SN74CBT16214 1-of-3 mux:
725 * - port b1 == tvp7002 (mux lowbits == 1 or 6)
726 * - port b2 == imager (mux lowbits == 2 or 7)
727 * - port b3 == tvp5146 (mux lowbits == 5)
728 *
729 * Runtime switching could work too, with limitations.
730 */
731 if (have_imager()) {
732 label = "HD imager";
733 mux |= 2;
734
735 /* externally mux MMC1/ENET/AIC33 to imager */
736 mux |= BIT(6) | BIT(5) | BIT(3);
737 } else {
738 struct davinci_soc_info *soc_info = &davinci_soc_info;
739
740 /* we can use MMC1 ... */
741 dm365evm_mmc_configure();
742 davinci_setup_mmc(1, &dm365evm_mmc_config);
743
744 /* ... and ENET ... */
745 dm365evm_emac_configure();
746 soc_info->emac_pdata->phy_id = DM365_EVM_PHY_ID;
747 resets &= ~BIT(3);
748
749 /* ... and AIC33 */
750 resets &= ~BIT(1);
751
752 if (have_tvp7002()) {
753 mux |= 1;
754 resets &= ~BIT(2);
755 label = "tvp7002 HD";
756 } else {
757 /* default to tvp5146 */
758 mux |= 5;
759 resets &= ~BIT(0);
760 label = "tvp5146 SD";
761 }
762 }
763 __raw_writeb(mux, cpld + CPLD_MUX);
764 __raw_writeb(resets, cpld + CPLD_RESETS);
765 pr_info("EVM: %s video input\n", label);
766
767 /* REVISIT export switches: NTSC/PAL (SW5.6), EXTRA1 (SW5.2), etc */
768 }
769
770 static void __init dm365_evm_map_io(void)
771 {
772 dm365_init();
773 }
774
775 static struct spi_eeprom at25640 = {
776 .byte_len = SZ_64K / 8,
777 .name = "at25640",
778 .page_size = 32,
779 .flags = EE_ADDR2,
780 };
781
782 static const struct spi_board_info dm365_evm_spi_info[] __initconst = {
783 {
784 .modalias = "at25",
785 .platform_data = &at25640,
786 .max_speed_hz = 10 * 1000 * 1000,
787 .bus_num = 0,
788 .chip_select = 0,
789 .mode = SPI_MODE_0,
790 },
791 };
792
793 static __init void dm365_evm_init(void)
794 {
795 int ret;
796
797 dm365_register_clocks();
798
799 ret = dm365_gpio_register();
800 if (ret)
801 pr_warn("%s: GPIO init failed: %d\n", __func__, ret);
802
803 nvmem_add_cell_table(&davinci_nvmem_cell_table);
804 nvmem_add_cell_lookups(&davinci_nvmem_cell_lookup, 1);
805
806 evm_init_i2c();
807 davinci_serial_init(dm365_serial_device);
808
809 dm365evm_emac_configure();
810 dm365evm_mmc_configure();
811
812 davinci_setup_mmc(0, &dm365evm_mmc_config);
813
814 dm365_init_video(&vpfe_cfg, &dm365evm_display_cfg);
815
816 /* maybe setup mmc1/etc ... _after_ mmc0 */
817 evm_init_cpld();
818
819 #ifdef CONFIG_SND_SOC_DM365_AIC3X_CODEC
820 dm365_init_asp();
821 #elif defined(CONFIG_SND_SOC_DM365_VOICE_CODEC)
822 dm365_init_vc();
823 #endif
824 dm365_init_rtc();
825 dm365_init_ks(&dm365evm_ks_data);
826
827 dm365_init_spi0(BIT(0), dm365_evm_spi_info,
828 ARRAY_SIZE(dm365_evm_spi_info));
829 }
830
831 MACHINE_START(DAVINCI_DM365_EVM, "DaVinci DM365 EVM")
832 .atag_offset = 0x100,
833 .map_io = dm365_evm_map_io,
834 .init_irq = dm365_init_irq,
835 .init_time = dm365_init_time,
836 .init_machine = dm365_evm_init,
837 .init_late = davinci_init_late,
838 .dma_zone_size = SZ_128M,
839 MACHINE_END
840
Linux with added FPC-III support