Jassi Brar | 5033f43 | 2010-11-22 15:37:25 +0900 | [diff] [blame] | 1 | /* sound/soc/samsung/i2s.c |
Jassi Brar | 1c7ac01 | 2010-11-22 15:36:59 +0900 | [diff] [blame] | 2 | * |
| 3 | * ALSA SoC Audio Layer - Samsung I2S Controller driver |
| 4 | * |
| 5 | * Copyright (c) 2010 Samsung Electronics Co. Ltd. |
Jaswinder Singh | df8ad33 | 2012-02-25 16:24:36 +0530 | [diff] [blame] | 6 | * Jaswinder Singh <jassisinghbrar@gmail.com> |
Jassi Brar | 1c7ac01 | 2010-11-22 15:36:59 +0900 | [diff] [blame] | 7 | * |
| 8 | * This program is free software; you can redistribute it and/or modify |
| 9 | * it under the terms of the GNU General Public License version 2 as |
| 10 | * published by the Free Software Foundation. |
| 11 | */ |
| 12 | |
| 13 | #include <linux/delay.h> |
| 14 | #include <linux/slab.h> |
| 15 | #include <linux/clk.h> |
| 16 | #include <linux/io.h> |
Paul Gortmaker | da155d5 | 2011-07-15 12:38:28 -0400 | [diff] [blame] | 17 | #include <linux/module.h> |
Mark Brown | c5cf4db | 2011-12-08 16:45:03 +0800 | [diff] [blame] | 18 | #include <linux/pm_runtime.h> |
Jassi Brar | 1c7ac01 | 2010-11-22 15:36:59 +0900 | [diff] [blame] | 19 | |
Jassi Brar | 1c7ac01 | 2010-11-22 15:36:59 +0900 | [diff] [blame] | 20 | #include <sound/soc.h> |
Seungwhan Youn | 0378b6a | 2011-01-11 07:26:06 +0900 | [diff] [blame] | 21 | #include <sound/pcm_params.h> |
Jassi Brar | 1c7ac01 | 2010-11-22 15:36:59 +0900 | [diff] [blame] | 22 | |
Arnd Bergmann | 436d42c | 2012-08-24 15:22:12 +0200 | [diff] [blame] | 23 | #include <linux/platform_data/asoc-s3c.h> |
Jassi Brar | 1c7ac01 | 2010-11-22 15:36:59 +0900 | [diff] [blame] | 24 | |
| 25 | #include "dma.h" |
Sangbeom Kim | 61100f4 | 2011-07-20 17:07:12 +0900 | [diff] [blame] | 26 | #include "idma.h" |
Jassi Brar | 1c7ac01 | 2010-11-22 15:36:59 +0900 | [diff] [blame] | 27 | #include "i2s.h" |
Sangbeom Kim | 172a453 | 2011-06-20 16:36:18 +0900 | [diff] [blame] | 28 | #include "i2s-regs.h" |
Jassi Brar | 1c7ac01 | 2010-11-22 15:36:59 +0900 | [diff] [blame] | 29 | |
| 30 | #define msecs_to_loops(t) (loops_per_jiffy / 1000 * HZ * t) |
| 31 | |
| 32 | struct i2s_dai { |
| 33 | /* Platform device for this DAI */ |
| 34 | struct platform_device *pdev; |
| 35 | /* IOREMAP'd SFRs */ |
| 36 | void __iomem *addr; |
| 37 | /* Physical base address of SFRs */ |
| 38 | u32 base; |
| 39 | /* Rate of RCLK source clock */ |
| 40 | unsigned long rclk_srcrate; |
| 41 | /* Frame Clock */ |
| 42 | unsigned frmclk; |
| 43 | /* |
| 44 | * Specifically requested RCLK,BCLK by MACHINE Driver. |
| 45 | * 0 indicates CPU driver is free to choose any value. |
| 46 | */ |
| 47 | unsigned rfs, bfs; |
| 48 | /* I2S Controller's core clock */ |
| 49 | struct clk *clk; |
| 50 | /* Clock for generating I2S signals */ |
| 51 | struct clk *op_clk; |
Jassi Brar | 1c7ac01 | 2010-11-22 15:36:59 +0900 | [diff] [blame] | 52 | /* Pointer to the Primary_Fifo if this is Sec_Fifo, NULL otherwise */ |
| 53 | struct i2s_dai *pri_dai; |
| 54 | /* Pointer to the Secondary_Fifo if it has one, NULL otherwise */ |
| 55 | struct i2s_dai *sec_dai; |
| 56 | #define DAI_OPENED (1 << 0) /* Dai is opened */ |
| 57 | #define DAI_MANAGER (1 << 1) /* Dai is the manager */ |
| 58 | unsigned mode; |
| 59 | /* Driver for this DAI */ |
| 60 | struct snd_soc_dai_driver i2s_dai_drv; |
| 61 | /* DMA parameters */ |
| 62 | struct s3c_dma_params dma_playback; |
| 63 | struct s3c_dma_params dma_capture; |
Sangbeom Kim | 61100f4 | 2011-07-20 17:07:12 +0900 | [diff] [blame] | 64 | struct s3c_dma_params idma_playback; |
Jassi Brar | 1c7ac01 | 2010-11-22 15:36:59 +0900 | [diff] [blame] | 65 | u32 quirks; |
| 66 | u32 suspend_i2smod; |
| 67 | u32 suspend_i2scon; |
| 68 | u32 suspend_i2spsr; |
| 69 | }; |
| 70 | |
| 71 | /* Lock for cross i/f checks */ |
| 72 | static DEFINE_SPINLOCK(lock); |
| 73 | |
| 74 | /* If this is the 'overlay' stereo DAI */ |
| 75 | static inline bool is_secondary(struct i2s_dai *i2s) |
| 76 | { |
| 77 | return i2s->pri_dai ? true : false; |
| 78 | } |
| 79 | |
| 80 | /* If operating in SoC-Slave mode */ |
| 81 | static inline bool is_slave(struct i2s_dai *i2s) |
| 82 | { |
| 83 | return (readl(i2s->addr + I2SMOD) & MOD_SLAVE) ? true : false; |
| 84 | } |
| 85 | |
| 86 | /* If this interface of the controller is transmitting data */ |
| 87 | static inline bool tx_active(struct i2s_dai *i2s) |
| 88 | { |
| 89 | u32 active; |
| 90 | |
| 91 | if (!i2s) |
| 92 | return false; |
| 93 | |
Sangbeom Kim | 3319550 | 2011-06-10 10:36:54 +0900 | [diff] [blame] | 94 | active = readl(i2s->addr + I2SCON); |
Jassi Brar | 1c7ac01 | 2010-11-22 15:36:59 +0900 | [diff] [blame] | 95 | |
| 96 | if (is_secondary(i2s)) |
| 97 | active &= CON_TXSDMA_ACTIVE; |
| 98 | else |
| 99 | active &= CON_TXDMA_ACTIVE; |
| 100 | |
| 101 | return active ? true : false; |
| 102 | } |
| 103 | |
| 104 | /* If the other interface of the controller is transmitting data */ |
| 105 | static inline bool other_tx_active(struct i2s_dai *i2s) |
| 106 | { |
| 107 | struct i2s_dai *other = i2s->pri_dai ? : i2s->sec_dai; |
| 108 | |
| 109 | return tx_active(other); |
| 110 | } |
| 111 | |
| 112 | /* If any interface of the controller is transmitting data */ |
| 113 | static inline bool any_tx_active(struct i2s_dai *i2s) |
| 114 | { |
| 115 | return tx_active(i2s) || other_tx_active(i2s); |
| 116 | } |
| 117 | |
| 118 | /* If this interface of the controller is receiving data */ |
| 119 | static inline bool rx_active(struct i2s_dai *i2s) |
| 120 | { |
| 121 | u32 active; |
| 122 | |
| 123 | if (!i2s) |
| 124 | return false; |
| 125 | |
Sangbeom Kim | 3319550 | 2011-06-10 10:36:54 +0900 | [diff] [blame] | 126 | active = readl(i2s->addr + I2SCON) & CON_RXDMA_ACTIVE; |
Jassi Brar | 1c7ac01 | 2010-11-22 15:36:59 +0900 | [diff] [blame] | 127 | |
| 128 | return active ? true : false; |
| 129 | } |
| 130 | |
| 131 | /* If the other interface of the controller is receiving data */ |
| 132 | static inline bool other_rx_active(struct i2s_dai *i2s) |
| 133 | { |
| 134 | struct i2s_dai *other = i2s->pri_dai ? : i2s->sec_dai; |
| 135 | |
| 136 | return rx_active(other); |
| 137 | } |
| 138 | |
| 139 | /* If any interface of the controller is receiving data */ |
| 140 | static inline bool any_rx_active(struct i2s_dai *i2s) |
| 141 | { |
| 142 | return rx_active(i2s) || other_rx_active(i2s); |
| 143 | } |
| 144 | |
| 145 | /* If the other DAI is transmitting or receiving data */ |
| 146 | static inline bool other_active(struct i2s_dai *i2s) |
| 147 | { |
| 148 | return other_rx_active(i2s) || other_tx_active(i2s); |
| 149 | } |
| 150 | |
| 151 | /* If this DAI is transmitting or receiving data */ |
| 152 | static inline bool this_active(struct i2s_dai *i2s) |
| 153 | { |
| 154 | return tx_active(i2s) || rx_active(i2s); |
| 155 | } |
| 156 | |
| 157 | /* If the controller is active anyway */ |
| 158 | static inline bool any_active(struct i2s_dai *i2s) |
| 159 | { |
| 160 | return this_active(i2s) || other_active(i2s); |
| 161 | } |
| 162 | |
| 163 | static inline struct i2s_dai *to_info(struct snd_soc_dai *dai) |
| 164 | { |
| 165 | return snd_soc_dai_get_drvdata(dai); |
| 166 | } |
| 167 | |
| 168 | static inline bool is_opened(struct i2s_dai *i2s) |
| 169 | { |
| 170 | if (i2s && (i2s->mode & DAI_OPENED)) |
| 171 | return true; |
| 172 | else |
| 173 | return false; |
| 174 | } |
| 175 | |
| 176 | static inline bool is_manager(struct i2s_dai *i2s) |
| 177 | { |
| 178 | if (is_opened(i2s) && (i2s->mode & DAI_MANAGER)) |
| 179 | return true; |
| 180 | else |
| 181 | return false; |
| 182 | } |
| 183 | |
| 184 | /* Read RCLK of I2S (in multiples of LRCLK) */ |
| 185 | static inline unsigned get_rfs(struct i2s_dai *i2s) |
| 186 | { |
| 187 | u32 rfs = (readl(i2s->addr + I2SMOD) >> 3) & 0x3; |
| 188 | |
| 189 | switch (rfs) { |
| 190 | case 3: return 768; |
| 191 | case 2: return 384; |
| 192 | case 1: return 512; |
| 193 | default: return 256; |
| 194 | } |
| 195 | } |
| 196 | |
| 197 | /* Write RCLK of I2S (in multiples of LRCLK) */ |
| 198 | static inline void set_rfs(struct i2s_dai *i2s, unsigned rfs) |
| 199 | { |
| 200 | u32 mod = readl(i2s->addr + I2SMOD); |
| 201 | |
| 202 | mod &= ~MOD_RCLK_MASK; |
| 203 | |
| 204 | switch (rfs) { |
| 205 | case 768: |
| 206 | mod |= MOD_RCLK_768FS; |
| 207 | break; |
| 208 | case 512: |
| 209 | mod |= MOD_RCLK_512FS; |
| 210 | break; |
| 211 | case 384: |
| 212 | mod |= MOD_RCLK_384FS; |
| 213 | break; |
| 214 | default: |
| 215 | mod |= MOD_RCLK_256FS; |
| 216 | break; |
| 217 | } |
| 218 | |
| 219 | writel(mod, i2s->addr + I2SMOD); |
| 220 | } |
| 221 | |
| 222 | /* Read Bit-Clock of I2S (in multiples of LRCLK) */ |
| 223 | static inline unsigned get_bfs(struct i2s_dai *i2s) |
| 224 | { |
| 225 | u32 bfs = (readl(i2s->addr + I2SMOD) >> 1) & 0x3; |
| 226 | |
| 227 | switch (bfs) { |
| 228 | case 3: return 24; |
| 229 | case 2: return 16; |
| 230 | case 1: return 48; |
| 231 | default: return 32; |
| 232 | } |
| 233 | } |
| 234 | |
| 235 | /* Write Bit-Clock of I2S (in multiples of LRCLK) */ |
| 236 | static inline void set_bfs(struct i2s_dai *i2s, unsigned bfs) |
| 237 | { |
| 238 | u32 mod = readl(i2s->addr + I2SMOD); |
| 239 | |
| 240 | mod &= ~MOD_BCLK_MASK; |
| 241 | |
| 242 | switch (bfs) { |
| 243 | case 48: |
| 244 | mod |= MOD_BCLK_48FS; |
| 245 | break; |
| 246 | case 32: |
| 247 | mod |= MOD_BCLK_32FS; |
| 248 | break; |
| 249 | case 24: |
| 250 | mod |= MOD_BCLK_24FS; |
| 251 | break; |
| 252 | case 16: |
| 253 | mod |= MOD_BCLK_16FS; |
| 254 | break; |
| 255 | default: |
| 256 | dev_err(&i2s->pdev->dev, "Wrong BCLK Divider!\n"); |
| 257 | return; |
| 258 | } |
| 259 | |
| 260 | writel(mod, i2s->addr + I2SMOD); |
| 261 | } |
| 262 | |
| 263 | /* Sample-Size */ |
| 264 | static inline int get_blc(struct i2s_dai *i2s) |
| 265 | { |
| 266 | int blc = readl(i2s->addr + I2SMOD); |
| 267 | |
| 268 | blc = (blc >> 13) & 0x3; |
| 269 | |
| 270 | switch (blc) { |
| 271 | case 2: return 24; |
| 272 | case 1: return 8; |
| 273 | default: return 16; |
| 274 | } |
| 275 | } |
| 276 | |
| 277 | /* TX Channel Control */ |
| 278 | static void i2s_txctrl(struct i2s_dai *i2s, int on) |
| 279 | { |
| 280 | void __iomem *addr = i2s->addr; |
| 281 | u32 con = readl(addr + I2SCON); |
| 282 | u32 mod = readl(addr + I2SMOD) & ~MOD_MASK; |
| 283 | |
| 284 | if (on) { |
| 285 | con |= CON_ACTIVE; |
| 286 | con &= ~CON_TXCH_PAUSE; |
| 287 | |
| 288 | if (is_secondary(i2s)) { |
| 289 | con |= CON_TXSDMA_ACTIVE; |
| 290 | con &= ~CON_TXSDMA_PAUSE; |
| 291 | } else { |
| 292 | con |= CON_TXDMA_ACTIVE; |
| 293 | con &= ~CON_TXDMA_PAUSE; |
| 294 | } |
| 295 | |
| 296 | if (any_rx_active(i2s)) |
| 297 | mod |= MOD_TXRX; |
| 298 | else |
| 299 | mod |= MOD_TXONLY; |
| 300 | } else { |
| 301 | if (is_secondary(i2s)) { |
| 302 | con |= CON_TXSDMA_PAUSE; |
| 303 | con &= ~CON_TXSDMA_ACTIVE; |
| 304 | } else { |
| 305 | con |= CON_TXDMA_PAUSE; |
| 306 | con &= ~CON_TXDMA_ACTIVE; |
| 307 | } |
| 308 | |
| 309 | if (other_tx_active(i2s)) { |
| 310 | writel(con, addr + I2SCON); |
| 311 | return; |
| 312 | } |
| 313 | |
| 314 | con |= CON_TXCH_PAUSE; |
| 315 | |
| 316 | if (any_rx_active(i2s)) |
| 317 | mod |= MOD_RXONLY; |
| 318 | else |
| 319 | con &= ~CON_ACTIVE; |
| 320 | } |
| 321 | |
| 322 | writel(mod, addr + I2SMOD); |
| 323 | writel(con, addr + I2SCON); |
| 324 | } |
| 325 | |
| 326 | /* RX Channel Control */ |
| 327 | static void i2s_rxctrl(struct i2s_dai *i2s, int on) |
| 328 | { |
| 329 | void __iomem *addr = i2s->addr; |
| 330 | u32 con = readl(addr + I2SCON); |
| 331 | u32 mod = readl(addr + I2SMOD) & ~MOD_MASK; |
| 332 | |
| 333 | if (on) { |
| 334 | con |= CON_RXDMA_ACTIVE | CON_ACTIVE; |
| 335 | con &= ~(CON_RXDMA_PAUSE | CON_RXCH_PAUSE); |
| 336 | |
| 337 | if (any_tx_active(i2s)) |
| 338 | mod |= MOD_TXRX; |
| 339 | else |
| 340 | mod |= MOD_RXONLY; |
| 341 | } else { |
| 342 | con |= CON_RXDMA_PAUSE | CON_RXCH_PAUSE; |
| 343 | con &= ~CON_RXDMA_ACTIVE; |
| 344 | |
| 345 | if (any_tx_active(i2s)) |
| 346 | mod |= MOD_TXONLY; |
| 347 | else |
| 348 | con &= ~CON_ACTIVE; |
| 349 | } |
| 350 | |
| 351 | writel(mod, addr + I2SMOD); |
| 352 | writel(con, addr + I2SCON); |
| 353 | } |
| 354 | |
| 355 | /* Flush FIFO of an interface */ |
| 356 | static inline void i2s_fifo(struct i2s_dai *i2s, u32 flush) |
| 357 | { |
| 358 | void __iomem *fic; |
| 359 | u32 val; |
| 360 | |
| 361 | if (!i2s) |
| 362 | return; |
| 363 | |
| 364 | if (is_secondary(i2s)) |
| 365 | fic = i2s->addr + I2SFICS; |
| 366 | else |
| 367 | fic = i2s->addr + I2SFIC; |
| 368 | |
| 369 | /* Flush the FIFO */ |
| 370 | writel(readl(fic) | flush, fic); |
| 371 | |
| 372 | /* Be patient */ |
| 373 | val = msecs_to_loops(1) / 1000; /* 1 usec */ |
| 374 | while (--val) |
| 375 | cpu_relax(); |
| 376 | |
| 377 | writel(readl(fic) & ~flush, fic); |
| 378 | } |
| 379 | |
| 380 | static int i2s_set_sysclk(struct snd_soc_dai *dai, |
| 381 | int clk_id, unsigned int rfs, int dir) |
| 382 | { |
| 383 | struct i2s_dai *i2s = to_info(dai); |
| 384 | struct i2s_dai *other = i2s->pri_dai ? : i2s->sec_dai; |
| 385 | u32 mod = readl(i2s->addr + I2SMOD); |
| 386 | |
| 387 | switch (clk_id) { |
| 388 | case SAMSUNG_I2S_CDCLK: |
| 389 | /* Shouldn't matter in GATING(CLOCK_IN) mode */ |
| 390 | if (dir == SND_SOC_CLOCK_IN) |
| 391 | rfs = 0; |
| 392 | |
| 393 | if ((rfs && other->rfs && (other->rfs != rfs)) || |
| 394 | (any_active(i2s) && |
| 395 | (((dir == SND_SOC_CLOCK_IN) |
| 396 | && !(mod & MOD_CDCLKCON)) || |
| 397 | ((dir == SND_SOC_CLOCK_OUT) |
| 398 | && (mod & MOD_CDCLKCON))))) { |
| 399 | dev_err(&i2s->pdev->dev, |
| 400 | "%s:%d Other DAI busy\n", __func__, __LINE__); |
| 401 | return -EAGAIN; |
| 402 | } |
| 403 | |
| 404 | if (dir == SND_SOC_CLOCK_IN) |
| 405 | mod |= MOD_CDCLKCON; |
| 406 | else |
| 407 | mod &= ~MOD_CDCLKCON; |
| 408 | |
| 409 | i2s->rfs = rfs; |
| 410 | break; |
| 411 | |
| 412 | case SAMSUNG_I2S_RCLKSRC_0: /* clock corrsponding to IISMOD[10] := 0 */ |
| 413 | case SAMSUNG_I2S_RCLKSRC_1: /* clock corrsponding to IISMOD[10] := 1 */ |
| 414 | if ((i2s->quirks & QUIRK_NO_MUXPSR) |
| 415 | || (clk_id == SAMSUNG_I2S_RCLKSRC_0)) |
| 416 | clk_id = 0; |
| 417 | else |
| 418 | clk_id = 1; |
| 419 | |
| 420 | if (!any_active(i2s)) { |
| 421 | if (i2s->op_clk) { |
| 422 | if ((clk_id && !(mod & MOD_IMS_SYSMUX)) || |
| 423 | (!clk_id && (mod & MOD_IMS_SYSMUX))) { |
Thomas Abraham | 98614cf | 2012-10-03 08:46:58 +0900 | [diff] [blame] | 424 | clk_disable_unprepare(i2s->op_clk); |
Jassi Brar | 1c7ac01 | 2010-11-22 15:36:59 +0900 | [diff] [blame] | 425 | clk_put(i2s->op_clk); |
| 426 | } else { |
Jassi Brar | 6ce534a | 2010-12-20 11:05:46 +0900 | [diff] [blame] | 427 | i2s->rclk_srcrate = |
| 428 | clk_get_rate(i2s->op_clk); |
Jassi Brar | 1c7ac01 | 2010-11-22 15:36:59 +0900 | [diff] [blame] | 429 | return 0; |
| 430 | } |
| 431 | } |
| 432 | |
Padmavathi Venna | 1974a04 | 2012-11-28 16:17:48 +0530 | [diff] [blame] | 433 | if (clk_id) |
| 434 | i2s->op_clk = clk_get(&i2s->pdev->dev, |
| 435 | "i2s_opclk1"); |
| 436 | else |
| 437 | i2s->op_clk = clk_get(&i2s->pdev->dev, |
| 438 | "i2s_opclk0"); |
Thomas Abraham | 98614cf | 2012-10-03 08:46:58 +0900 | [diff] [blame] | 439 | clk_prepare_enable(i2s->op_clk); |
Jassi Brar | 1c7ac01 | 2010-11-22 15:36:59 +0900 | [diff] [blame] | 440 | i2s->rclk_srcrate = clk_get_rate(i2s->op_clk); |
| 441 | |
| 442 | /* Over-ride the other's */ |
| 443 | if (other) { |
| 444 | other->op_clk = i2s->op_clk; |
| 445 | other->rclk_srcrate = i2s->rclk_srcrate; |
| 446 | } |
| 447 | } else if ((!clk_id && (mod & MOD_IMS_SYSMUX)) |
| 448 | || (clk_id && !(mod & MOD_IMS_SYSMUX))) { |
| 449 | dev_err(&i2s->pdev->dev, |
| 450 | "%s:%d Other DAI busy\n", __func__, __LINE__); |
| 451 | return -EAGAIN; |
| 452 | } else { |
| 453 | /* Call can't be on the active DAI */ |
| 454 | i2s->op_clk = other->op_clk; |
| 455 | i2s->rclk_srcrate = other->rclk_srcrate; |
| 456 | return 0; |
| 457 | } |
| 458 | |
| 459 | if (clk_id == 0) |
| 460 | mod &= ~MOD_IMS_SYSMUX; |
| 461 | else |
| 462 | mod |= MOD_IMS_SYSMUX; |
| 463 | break; |
| 464 | |
| 465 | default: |
| 466 | dev_err(&i2s->pdev->dev, "We don't serve that!\n"); |
| 467 | return -EINVAL; |
| 468 | } |
| 469 | |
| 470 | writel(mod, i2s->addr + I2SMOD); |
| 471 | |
| 472 | return 0; |
| 473 | } |
| 474 | |
| 475 | static int i2s_set_fmt(struct snd_soc_dai *dai, |
| 476 | unsigned int fmt) |
| 477 | { |
| 478 | struct i2s_dai *i2s = to_info(dai); |
| 479 | u32 mod = readl(i2s->addr + I2SMOD); |
| 480 | u32 tmp = 0; |
| 481 | |
| 482 | /* Format is priority */ |
| 483 | switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) { |
| 484 | case SND_SOC_DAIFMT_RIGHT_J: |
| 485 | tmp |= MOD_LR_RLOW; |
| 486 | tmp |= MOD_SDF_MSB; |
| 487 | break; |
| 488 | case SND_SOC_DAIFMT_LEFT_J: |
| 489 | tmp |= MOD_LR_RLOW; |
| 490 | tmp |= MOD_SDF_LSB; |
| 491 | break; |
| 492 | case SND_SOC_DAIFMT_I2S: |
| 493 | tmp |= MOD_SDF_IIS; |
| 494 | break; |
| 495 | default: |
| 496 | dev_err(&i2s->pdev->dev, "Format not supported\n"); |
| 497 | return -EINVAL; |
| 498 | } |
| 499 | |
| 500 | /* |
| 501 | * INV flag is relative to the FORMAT flag - if set it simply |
| 502 | * flips the polarity specified by the Standard |
| 503 | */ |
| 504 | switch (fmt & SND_SOC_DAIFMT_INV_MASK) { |
| 505 | case SND_SOC_DAIFMT_NB_NF: |
| 506 | break; |
| 507 | case SND_SOC_DAIFMT_NB_IF: |
| 508 | if (tmp & MOD_LR_RLOW) |
| 509 | tmp &= ~MOD_LR_RLOW; |
| 510 | else |
| 511 | tmp |= MOD_LR_RLOW; |
| 512 | break; |
| 513 | default: |
| 514 | dev_err(&i2s->pdev->dev, "Polarity not supported\n"); |
| 515 | return -EINVAL; |
| 516 | } |
| 517 | |
| 518 | switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) { |
| 519 | case SND_SOC_DAIFMT_CBM_CFM: |
| 520 | tmp |= MOD_SLAVE; |
| 521 | break; |
| 522 | case SND_SOC_DAIFMT_CBS_CFS: |
| 523 | /* Set default source clock in Master mode */ |
| 524 | if (i2s->rclk_srcrate == 0) |
| 525 | i2s_set_sysclk(dai, SAMSUNG_I2S_RCLKSRC_0, |
| 526 | 0, SND_SOC_CLOCK_IN); |
| 527 | break; |
| 528 | default: |
| 529 | dev_err(&i2s->pdev->dev, "master/slave format not supported\n"); |
| 530 | return -EINVAL; |
| 531 | } |
| 532 | |
| 533 | if (any_active(i2s) && |
| 534 | ((mod & (MOD_SDF_MASK | MOD_LR_RLOW |
| 535 | | MOD_SLAVE)) != tmp)) { |
| 536 | dev_err(&i2s->pdev->dev, |
| 537 | "%s:%d Other DAI busy\n", __func__, __LINE__); |
| 538 | return -EAGAIN; |
| 539 | } |
| 540 | |
| 541 | mod &= ~(MOD_SDF_MASK | MOD_LR_RLOW | MOD_SLAVE); |
| 542 | mod |= tmp; |
| 543 | writel(mod, i2s->addr + I2SMOD); |
| 544 | |
| 545 | return 0; |
| 546 | } |
| 547 | |
| 548 | static int i2s_hw_params(struct snd_pcm_substream *substream, |
| 549 | struct snd_pcm_hw_params *params, struct snd_soc_dai *dai) |
| 550 | { |
| 551 | struct i2s_dai *i2s = to_info(dai); |
| 552 | u32 mod = readl(i2s->addr + I2SMOD); |
| 553 | |
| 554 | if (!is_secondary(i2s)) |
| 555 | mod &= ~(MOD_DC2_EN | MOD_DC1_EN); |
| 556 | |
| 557 | switch (params_channels(params)) { |
| 558 | case 6: |
| 559 | mod |= MOD_DC2_EN; |
| 560 | case 4: |
| 561 | mod |= MOD_DC1_EN; |
| 562 | break; |
| 563 | case 2: |
Sangsu Park | 588fb70 | 2012-03-16 15:40:53 +0900 | [diff] [blame] | 564 | if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) |
| 565 | i2s->dma_playback.dma_size = 4; |
| 566 | else |
| 567 | i2s->dma_capture.dma_size = 4; |
| 568 | break; |
| 569 | case 1: |
| 570 | if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) |
| 571 | i2s->dma_playback.dma_size = 2; |
| 572 | else |
| 573 | i2s->dma_capture.dma_size = 2; |
| 574 | |
Jassi Brar | 1c7ac01 | 2010-11-22 15:36:59 +0900 | [diff] [blame] | 575 | break; |
| 576 | default: |
| 577 | dev_err(&i2s->pdev->dev, "%d channels not supported\n", |
| 578 | params_channels(params)); |
| 579 | return -EINVAL; |
| 580 | } |
| 581 | |
| 582 | if (is_secondary(i2s)) |
| 583 | mod &= ~MOD_BLCS_MASK; |
| 584 | else |
| 585 | mod &= ~MOD_BLCP_MASK; |
| 586 | |
| 587 | if (is_manager(i2s)) |
| 588 | mod &= ~MOD_BLC_MASK; |
| 589 | |
| 590 | switch (params_format(params)) { |
| 591 | case SNDRV_PCM_FORMAT_S8: |
| 592 | if (is_secondary(i2s)) |
| 593 | mod |= MOD_BLCS_8BIT; |
| 594 | else |
| 595 | mod |= MOD_BLCP_8BIT; |
| 596 | if (is_manager(i2s)) |
| 597 | mod |= MOD_BLC_8BIT; |
| 598 | break; |
| 599 | case SNDRV_PCM_FORMAT_S16_LE: |
| 600 | if (is_secondary(i2s)) |
| 601 | mod |= MOD_BLCS_16BIT; |
| 602 | else |
| 603 | mod |= MOD_BLCP_16BIT; |
| 604 | if (is_manager(i2s)) |
| 605 | mod |= MOD_BLC_16BIT; |
| 606 | break; |
| 607 | case SNDRV_PCM_FORMAT_S24_LE: |
| 608 | if (is_secondary(i2s)) |
| 609 | mod |= MOD_BLCS_24BIT; |
| 610 | else |
| 611 | mod |= MOD_BLCP_24BIT; |
| 612 | if (is_manager(i2s)) |
| 613 | mod |= MOD_BLC_24BIT; |
| 614 | break; |
| 615 | default: |
| 616 | dev_err(&i2s->pdev->dev, "Format(%d) not supported\n", |
| 617 | params_format(params)); |
| 618 | return -EINVAL; |
| 619 | } |
| 620 | writel(mod, i2s->addr + I2SMOD); |
| 621 | |
| 622 | if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) |
| 623 | snd_soc_dai_set_dma_data(dai, substream, |
| 624 | (void *)&i2s->dma_playback); |
| 625 | else |
| 626 | snd_soc_dai_set_dma_data(dai, substream, |
| 627 | (void *)&i2s->dma_capture); |
| 628 | |
| 629 | i2s->frmclk = params_rate(params); |
| 630 | |
| 631 | return 0; |
| 632 | } |
| 633 | |
| 634 | /* We set constraints on the substream acc to the version of I2S */ |
| 635 | static int i2s_startup(struct snd_pcm_substream *substream, |
| 636 | struct snd_soc_dai *dai) |
| 637 | { |
| 638 | struct i2s_dai *i2s = to_info(dai); |
| 639 | struct i2s_dai *other = i2s->pri_dai ? : i2s->sec_dai; |
| 640 | unsigned long flags; |
| 641 | |
| 642 | spin_lock_irqsave(&lock, flags); |
| 643 | |
| 644 | i2s->mode |= DAI_OPENED; |
| 645 | |
| 646 | if (is_manager(other)) |
| 647 | i2s->mode &= ~DAI_MANAGER; |
| 648 | else |
| 649 | i2s->mode |= DAI_MANAGER; |
| 650 | |
| 651 | /* Enforce set_sysclk in Master mode */ |
| 652 | i2s->rclk_srcrate = 0; |
| 653 | |
| 654 | spin_unlock_irqrestore(&lock, flags); |
| 655 | |
| 656 | return 0; |
| 657 | } |
| 658 | |
| 659 | static void i2s_shutdown(struct snd_pcm_substream *substream, |
| 660 | struct snd_soc_dai *dai) |
| 661 | { |
| 662 | struct i2s_dai *i2s = to_info(dai); |
| 663 | struct i2s_dai *other = i2s->pri_dai ? : i2s->sec_dai; |
| 664 | unsigned long flags; |
| 665 | |
| 666 | spin_lock_irqsave(&lock, flags); |
| 667 | |
| 668 | i2s->mode &= ~DAI_OPENED; |
| 669 | i2s->mode &= ~DAI_MANAGER; |
| 670 | |
| 671 | if (is_opened(other)) |
| 672 | other->mode |= DAI_MANAGER; |
| 673 | |
| 674 | /* Reset any constraint on RFS and BFS */ |
| 675 | i2s->rfs = 0; |
| 676 | i2s->bfs = 0; |
| 677 | |
| 678 | spin_unlock_irqrestore(&lock, flags); |
| 679 | |
| 680 | /* Gate CDCLK by default */ |
| 681 | if (!is_opened(other)) |
| 682 | i2s_set_sysclk(dai, SAMSUNG_I2S_CDCLK, |
| 683 | 0, SND_SOC_CLOCK_IN); |
| 684 | } |
| 685 | |
| 686 | static int config_setup(struct i2s_dai *i2s) |
| 687 | { |
| 688 | struct i2s_dai *other = i2s->pri_dai ? : i2s->sec_dai; |
| 689 | unsigned rfs, bfs, blc; |
| 690 | u32 psr; |
| 691 | |
| 692 | blc = get_blc(i2s); |
| 693 | |
| 694 | bfs = i2s->bfs; |
| 695 | |
| 696 | if (!bfs && other) |
| 697 | bfs = other->bfs; |
| 698 | |
| 699 | /* Select least possible multiple(2) if no constraint set */ |
| 700 | if (!bfs) |
| 701 | bfs = blc * 2; |
| 702 | |
| 703 | rfs = i2s->rfs; |
| 704 | |
| 705 | if (!rfs && other) |
| 706 | rfs = other->rfs; |
| 707 | |
| 708 | if ((rfs == 256 || rfs == 512) && (blc == 24)) { |
| 709 | dev_err(&i2s->pdev->dev, |
| 710 | "%d-RFS not supported for 24-blc\n", rfs); |
| 711 | return -EINVAL; |
| 712 | } |
| 713 | |
| 714 | if (!rfs) { |
| 715 | if (bfs == 16 || bfs == 32) |
| 716 | rfs = 256; |
| 717 | else |
| 718 | rfs = 384; |
| 719 | } |
| 720 | |
| 721 | /* If already setup and running */ |
| 722 | if (any_active(i2s) && (get_rfs(i2s) != rfs || get_bfs(i2s) != bfs)) { |
| 723 | dev_err(&i2s->pdev->dev, |
| 724 | "%s:%d Other DAI busy\n", __func__, __LINE__); |
| 725 | return -EAGAIN; |
| 726 | } |
| 727 | |
| 728 | /* Don't bother RFS, BFS & PSR in Slave mode */ |
| 729 | if (is_slave(i2s)) |
| 730 | return 0; |
| 731 | |
| 732 | set_bfs(i2s, bfs); |
| 733 | set_rfs(i2s, rfs); |
| 734 | |
| 735 | if (!(i2s->quirks & QUIRK_NO_MUXPSR)) { |
| 736 | psr = i2s->rclk_srcrate / i2s->frmclk / rfs; |
| 737 | writel(((psr - 1) << 8) | PSR_PSREN, i2s->addr + I2SPSR); |
| 738 | dev_dbg(&i2s->pdev->dev, |
| 739 | "RCLK_SRC=%luHz PSR=%u, RCLK=%dfs, BCLK=%dfs\n", |
| 740 | i2s->rclk_srcrate, psr, rfs, bfs); |
| 741 | } |
| 742 | |
| 743 | return 0; |
| 744 | } |
| 745 | |
| 746 | static int i2s_trigger(struct snd_pcm_substream *substream, |
| 747 | int cmd, struct snd_soc_dai *dai) |
| 748 | { |
| 749 | int capture = (substream->stream == SNDRV_PCM_STREAM_CAPTURE); |
| 750 | struct snd_soc_pcm_runtime *rtd = substream->private_data; |
| 751 | struct i2s_dai *i2s = to_info(rtd->cpu_dai); |
| 752 | unsigned long flags; |
| 753 | |
| 754 | switch (cmd) { |
| 755 | case SNDRV_PCM_TRIGGER_START: |
| 756 | case SNDRV_PCM_TRIGGER_RESUME: |
| 757 | case SNDRV_PCM_TRIGGER_PAUSE_RELEASE: |
| 758 | local_irq_save(flags); |
| 759 | |
Jassi Brar | 1c7ac01 | 2010-11-22 15:36:59 +0900 | [diff] [blame] | 760 | if (config_setup(i2s)) { |
| 761 | local_irq_restore(flags); |
| 762 | return -EINVAL; |
| 763 | } |
| 764 | |
| 765 | if (capture) |
| 766 | i2s_rxctrl(i2s, 1); |
| 767 | else |
| 768 | i2s_txctrl(i2s, 1); |
| 769 | |
| 770 | local_irq_restore(flags); |
| 771 | break; |
| 772 | case SNDRV_PCM_TRIGGER_STOP: |
| 773 | case SNDRV_PCM_TRIGGER_SUSPEND: |
| 774 | case SNDRV_PCM_TRIGGER_PAUSE_PUSH: |
| 775 | local_irq_save(flags); |
| 776 | |
Jassi Brar | c90887f | 2012-02-25 16:42:34 +0530 | [diff] [blame] | 777 | if (capture) { |
Jassi Brar | 1c7ac01 | 2010-11-22 15:36:59 +0900 | [diff] [blame] | 778 | i2s_rxctrl(i2s, 0); |
Jassi Brar | 775bc97 | 2010-12-20 11:05:47 +0900 | [diff] [blame] | 779 | i2s_fifo(i2s, FIC_RXFLUSH); |
Jassi Brar | c90887f | 2012-02-25 16:42:34 +0530 | [diff] [blame] | 780 | } else { |
| 781 | i2s_txctrl(i2s, 0); |
Jassi Brar | 775bc97 | 2010-12-20 11:05:47 +0900 | [diff] [blame] | 782 | i2s_fifo(i2s, FIC_TXFLUSH); |
Jassi Brar | c90887f | 2012-02-25 16:42:34 +0530 | [diff] [blame] | 783 | } |
Jassi Brar | 775bc97 | 2010-12-20 11:05:47 +0900 | [diff] [blame] | 784 | |
Jassi Brar | 1c7ac01 | 2010-11-22 15:36:59 +0900 | [diff] [blame] | 785 | local_irq_restore(flags); |
| 786 | break; |
| 787 | } |
| 788 | |
| 789 | return 0; |
| 790 | } |
| 791 | |
| 792 | static int i2s_set_clkdiv(struct snd_soc_dai *dai, |
| 793 | int div_id, int div) |
| 794 | { |
| 795 | struct i2s_dai *i2s = to_info(dai); |
| 796 | struct i2s_dai *other = i2s->pri_dai ? : i2s->sec_dai; |
| 797 | |
| 798 | switch (div_id) { |
| 799 | case SAMSUNG_I2S_DIV_BCLK: |
| 800 | if ((any_active(i2s) && div && (get_bfs(i2s) != div)) |
| 801 | || (other && other->bfs && (other->bfs != div))) { |
| 802 | dev_err(&i2s->pdev->dev, |
| 803 | "%s:%d Other DAI busy\n", __func__, __LINE__); |
| 804 | return -EAGAIN; |
| 805 | } |
| 806 | i2s->bfs = div; |
| 807 | break; |
| 808 | default: |
| 809 | dev_err(&i2s->pdev->dev, |
| 810 | "Invalid clock divider(%d)\n", div_id); |
| 811 | return -EINVAL; |
| 812 | } |
| 813 | |
| 814 | return 0; |
| 815 | } |
| 816 | |
| 817 | static snd_pcm_sframes_t |
| 818 | i2s_delay(struct snd_pcm_substream *substream, struct snd_soc_dai *dai) |
| 819 | { |
| 820 | struct i2s_dai *i2s = to_info(dai); |
| 821 | u32 reg = readl(i2s->addr + I2SFIC); |
| 822 | snd_pcm_sframes_t delay; |
| 823 | |
| 824 | if (substream->stream == SNDRV_PCM_STREAM_CAPTURE) |
| 825 | delay = FIC_RXCOUNT(reg); |
| 826 | else if (is_secondary(i2s)) |
| 827 | delay = FICS_TXCOUNT(readl(i2s->addr + I2SFICS)); |
| 828 | else |
| 829 | delay = FIC_TXCOUNT(reg); |
| 830 | |
| 831 | return delay; |
| 832 | } |
| 833 | |
| 834 | #ifdef CONFIG_PM |
| 835 | static int i2s_suspend(struct snd_soc_dai *dai) |
| 836 | { |
| 837 | struct i2s_dai *i2s = to_info(dai); |
| 838 | |
| 839 | if (dai->active) { |
| 840 | i2s->suspend_i2smod = readl(i2s->addr + I2SMOD); |
| 841 | i2s->suspend_i2scon = readl(i2s->addr + I2SCON); |
| 842 | i2s->suspend_i2spsr = readl(i2s->addr + I2SPSR); |
| 843 | } |
| 844 | |
| 845 | return 0; |
| 846 | } |
| 847 | |
| 848 | static int i2s_resume(struct snd_soc_dai *dai) |
| 849 | { |
| 850 | struct i2s_dai *i2s = to_info(dai); |
| 851 | |
| 852 | if (dai->active) { |
| 853 | writel(i2s->suspend_i2scon, i2s->addr + I2SCON); |
| 854 | writel(i2s->suspend_i2smod, i2s->addr + I2SMOD); |
| 855 | writel(i2s->suspend_i2spsr, i2s->addr + I2SPSR); |
| 856 | } |
| 857 | |
| 858 | return 0; |
| 859 | } |
| 860 | #else |
| 861 | #define i2s_suspend NULL |
| 862 | #define i2s_resume NULL |
| 863 | #endif |
| 864 | |
| 865 | static int samsung_i2s_dai_probe(struct snd_soc_dai *dai) |
| 866 | { |
| 867 | struct i2s_dai *i2s = to_info(dai); |
| 868 | struct i2s_dai *other = i2s->pri_dai ? : i2s->sec_dai; |
| 869 | |
| 870 | if (other && other->clk) /* If this is probe on secondary */ |
| 871 | goto probe_exit; |
| 872 | |
| 873 | i2s->addr = ioremap(i2s->base, 0x100); |
| 874 | if (i2s->addr == NULL) { |
| 875 | dev_err(&i2s->pdev->dev, "cannot ioremap registers\n"); |
| 876 | return -ENXIO; |
| 877 | } |
| 878 | |
| 879 | i2s->clk = clk_get(&i2s->pdev->dev, "iis"); |
| 880 | if (IS_ERR(i2s->clk)) { |
| 881 | dev_err(&i2s->pdev->dev, "failed to get i2s_clock\n"); |
| 882 | iounmap(i2s->addr); |
| 883 | return -ENOENT; |
| 884 | } |
Thomas Abraham | 98614cf | 2012-10-03 08:46:58 +0900 | [diff] [blame] | 885 | clk_prepare_enable(i2s->clk); |
Jassi Brar | 1c7ac01 | 2010-11-22 15:36:59 +0900 | [diff] [blame] | 886 | |
| 887 | if (other) { |
| 888 | other->addr = i2s->addr; |
| 889 | other->clk = i2s->clk; |
| 890 | } |
| 891 | |
| 892 | if (i2s->quirks & QUIRK_NEED_RSTCLR) |
| 893 | writel(CON_RSTCLR, i2s->addr + I2SCON); |
| 894 | |
Sangbeom Kim | 61100f4 | 2011-07-20 17:07:12 +0900 | [diff] [blame] | 895 | if (i2s->quirks & QUIRK_SEC_DAI) |
Mark Brown | 9b8f569 | 2011-11-27 21:35:40 +0000 | [diff] [blame] | 896 | idma_reg_addr_init(i2s->addr, |
Sangbeom Kim | 61100f4 | 2011-07-20 17:07:12 +0900 | [diff] [blame] | 897 | i2s->sec_dai->idma_playback.dma_addr); |
| 898 | |
Jassi Brar | 1c7ac01 | 2010-11-22 15:36:59 +0900 | [diff] [blame] | 899 | probe_exit: |
| 900 | /* Reset any constraint on RFS and BFS */ |
| 901 | i2s->rfs = 0; |
| 902 | i2s->bfs = 0; |
| 903 | i2s_txctrl(i2s, 0); |
| 904 | i2s_rxctrl(i2s, 0); |
| 905 | i2s_fifo(i2s, FIC_TXFLUSH); |
| 906 | i2s_fifo(other, FIC_TXFLUSH); |
| 907 | i2s_fifo(i2s, FIC_RXFLUSH); |
| 908 | |
| 909 | /* Gate CDCLK by default */ |
| 910 | if (!is_opened(other)) |
| 911 | i2s_set_sysclk(dai, SAMSUNG_I2S_CDCLK, |
| 912 | 0, SND_SOC_CLOCK_IN); |
| 913 | |
| 914 | return 0; |
| 915 | } |
| 916 | |
| 917 | static int samsung_i2s_dai_remove(struct snd_soc_dai *dai) |
| 918 | { |
| 919 | struct i2s_dai *i2s = snd_soc_dai_get_drvdata(dai); |
| 920 | struct i2s_dai *other = i2s->pri_dai ? : i2s->sec_dai; |
| 921 | |
| 922 | if (!other || !other->clk) { |
| 923 | |
| 924 | if (i2s->quirks & QUIRK_NEED_RSTCLR) |
| 925 | writel(0, i2s->addr + I2SCON); |
| 926 | |
Thomas Abraham | 98614cf | 2012-10-03 08:46:58 +0900 | [diff] [blame] | 927 | clk_disable_unprepare(i2s->clk); |
Jassi Brar | 1c7ac01 | 2010-11-22 15:36:59 +0900 | [diff] [blame] | 928 | clk_put(i2s->clk); |
| 929 | |
| 930 | iounmap(i2s->addr); |
| 931 | } |
| 932 | |
| 933 | i2s->clk = NULL; |
| 934 | |
| 935 | return 0; |
| 936 | } |
| 937 | |
Lars-Peter Clausen | 85e7652 | 2011-11-23 11:40:40 +0100 | [diff] [blame] | 938 | static const struct snd_soc_dai_ops samsung_i2s_dai_ops = { |
Jassi Brar | 1c7ac01 | 2010-11-22 15:36:59 +0900 | [diff] [blame] | 939 | .trigger = i2s_trigger, |
| 940 | .hw_params = i2s_hw_params, |
| 941 | .set_fmt = i2s_set_fmt, |
| 942 | .set_clkdiv = i2s_set_clkdiv, |
| 943 | .set_sysclk = i2s_set_sysclk, |
| 944 | .startup = i2s_startup, |
| 945 | .shutdown = i2s_shutdown, |
| 946 | .delay = i2s_delay, |
| 947 | }; |
| 948 | |
| 949 | #define SAMSUNG_I2S_RATES SNDRV_PCM_RATE_8000_96000 |
| 950 | |
| 951 | #define SAMSUNG_I2S_FMTS (SNDRV_PCM_FMTBIT_S8 | \ |
| 952 | SNDRV_PCM_FMTBIT_S16_LE | \ |
| 953 | SNDRV_PCM_FMTBIT_S24_LE) |
| 954 | |
| 955 | static __devinit |
| 956 | struct i2s_dai *i2s_alloc_dai(struct platform_device *pdev, bool sec) |
| 957 | { |
| 958 | struct i2s_dai *i2s; |
| 959 | |
Mark Brown | b960ce7 | 2011-12-03 20:30:37 +0000 | [diff] [blame] | 960 | i2s = devm_kzalloc(&pdev->dev, sizeof(struct i2s_dai), GFP_KERNEL); |
Jassi Brar | 1c7ac01 | 2010-11-22 15:36:59 +0900 | [diff] [blame] | 961 | if (i2s == NULL) |
| 962 | return NULL; |
| 963 | |
| 964 | i2s->pdev = pdev; |
| 965 | i2s->pri_dai = NULL; |
| 966 | i2s->sec_dai = NULL; |
| 967 | i2s->i2s_dai_drv.symmetric_rates = 1; |
| 968 | i2s->i2s_dai_drv.probe = samsung_i2s_dai_probe; |
| 969 | i2s->i2s_dai_drv.remove = samsung_i2s_dai_remove; |
| 970 | i2s->i2s_dai_drv.ops = &samsung_i2s_dai_ops; |
| 971 | i2s->i2s_dai_drv.suspend = i2s_suspend; |
| 972 | i2s->i2s_dai_drv.resume = i2s_resume; |
| 973 | i2s->i2s_dai_drv.playback.channels_min = 2; |
| 974 | i2s->i2s_dai_drv.playback.channels_max = 2; |
| 975 | i2s->i2s_dai_drv.playback.rates = SAMSUNG_I2S_RATES; |
| 976 | i2s->i2s_dai_drv.playback.formats = SAMSUNG_I2S_FMTS; |
| 977 | |
| 978 | if (!sec) { |
Sangsu Park | 588fb70 | 2012-03-16 15:40:53 +0900 | [diff] [blame] | 979 | i2s->i2s_dai_drv.capture.channels_min = 1; |
Jassi Brar | 1c7ac01 | 2010-11-22 15:36:59 +0900 | [diff] [blame] | 980 | i2s->i2s_dai_drv.capture.channels_max = 2; |
| 981 | i2s->i2s_dai_drv.capture.rates = SAMSUNG_I2S_RATES; |
| 982 | i2s->i2s_dai_drv.capture.formats = SAMSUNG_I2S_FMTS; |
| 983 | } else { /* Create a new platform_device for Secondary */ |
| 984 | i2s->pdev = platform_device_register_resndata(NULL, |
| 985 | pdev->name, pdev->id + SAMSUNG_I2S_SECOFF, |
| 986 | NULL, 0, NULL, 0); |
Mark Brown | b960ce7 | 2011-12-03 20:30:37 +0000 | [diff] [blame] | 987 | if (IS_ERR(i2s->pdev)) |
Jassi Brar | 1c7ac01 | 2010-11-22 15:36:59 +0900 | [diff] [blame] | 988 | return NULL; |
Jassi Brar | 1c7ac01 | 2010-11-22 15:36:59 +0900 | [diff] [blame] | 989 | } |
| 990 | |
| 991 | /* Pre-assign snd_soc_dai_set_drvdata */ |
| 992 | dev_set_drvdata(&i2s->pdev->dev, i2s); |
| 993 | |
| 994 | return i2s; |
| 995 | } |
| 996 | |
| 997 | static __devinit int samsung_i2s_probe(struct platform_device *pdev) |
| 998 | { |
| 999 | u32 dma_pl_chan, dma_cp_chan, dma_pl_sec_chan; |
| 1000 | struct i2s_dai *pri_dai, *sec_dai = NULL; |
| 1001 | struct s3c_audio_pdata *i2s_pdata; |
| 1002 | struct samsung_i2s *i2s_cfg; |
| 1003 | struct resource *res; |
| 1004 | u32 regs_base, quirks; |
| 1005 | int ret = 0; |
| 1006 | |
| 1007 | /* Call during Seconday interface registration */ |
| 1008 | if (pdev->id >= SAMSUNG_I2S_SECOFF) { |
| 1009 | sec_dai = dev_get_drvdata(&pdev->dev); |
| 1010 | snd_soc_register_dai(&sec_dai->pdev->dev, |
| 1011 | &sec_dai->i2s_dai_drv); |
| 1012 | return 0; |
| 1013 | } |
| 1014 | |
| 1015 | i2s_pdata = pdev->dev.platform_data; |
| 1016 | if (i2s_pdata == NULL) { |
| 1017 | dev_err(&pdev->dev, "Can't work without s3c_audio_pdata\n"); |
| 1018 | return -EINVAL; |
| 1019 | } |
| 1020 | |
| 1021 | res = platform_get_resource(pdev, IORESOURCE_DMA, 0); |
| 1022 | if (!res) { |
| 1023 | dev_err(&pdev->dev, "Unable to get I2S-TX dma resource\n"); |
| 1024 | return -ENXIO; |
| 1025 | } |
| 1026 | dma_pl_chan = res->start; |
| 1027 | |
| 1028 | res = platform_get_resource(pdev, IORESOURCE_DMA, 1); |
| 1029 | if (!res) { |
| 1030 | dev_err(&pdev->dev, "Unable to get I2S-RX dma resource\n"); |
| 1031 | return -ENXIO; |
| 1032 | } |
| 1033 | dma_cp_chan = res->start; |
| 1034 | |
| 1035 | res = platform_get_resource(pdev, IORESOURCE_DMA, 2); |
| 1036 | if (res) |
| 1037 | dma_pl_sec_chan = res->start; |
| 1038 | else |
| 1039 | dma_pl_sec_chan = 0; |
| 1040 | |
| 1041 | res = platform_get_resource(pdev, IORESOURCE_MEM, 0); |
| 1042 | if (!res) { |
| 1043 | dev_err(&pdev->dev, "Unable to get I2S SFR address\n"); |
| 1044 | return -ENXIO; |
| 1045 | } |
| 1046 | |
| 1047 | if (!request_mem_region(res->start, resource_size(res), |
| 1048 | "samsung-i2s")) { |
| 1049 | dev_err(&pdev->dev, "Unable to request SFR region\n"); |
| 1050 | return -EBUSY; |
| 1051 | } |
| 1052 | regs_base = res->start; |
| 1053 | |
| 1054 | i2s_cfg = &i2s_pdata->type.i2s; |
| 1055 | quirks = i2s_cfg->quirks; |
| 1056 | |
| 1057 | pri_dai = i2s_alloc_dai(pdev, false); |
| 1058 | if (!pri_dai) { |
| 1059 | dev_err(&pdev->dev, "Unable to alloc I2S_pri\n"); |
| 1060 | ret = -ENOMEM; |
Mark Brown | b960ce7 | 2011-12-03 20:30:37 +0000 | [diff] [blame] | 1061 | goto err; |
Jassi Brar | 1c7ac01 | 2010-11-22 15:36:59 +0900 | [diff] [blame] | 1062 | } |
| 1063 | |
| 1064 | pri_dai->dma_playback.dma_addr = regs_base + I2STXD; |
| 1065 | pri_dai->dma_capture.dma_addr = regs_base + I2SRXD; |
| 1066 | pri_dai->dma_playback.client = |
| 1067 | (struct s3c2410_dma_client *)&pri_dai->dma_playback; |
| 1068 | pri_dai->dma_capture.client = |
| 1069 | (struct s3c2410_dma_client *)&pri_dai->dma_capture; |
| 1070 | pri_dai->dma_playback.channel = dma_pl_chan; |
| 1071 | pri_dai->dma_capture.channel = dma_cp_chan; |
Jassi Brar | 1c7ac01 | 2010-11-22 15:36:59 +0900 | [diff] [blame] | 1072 | pri_dai->dma_playback.dma_size = 4; |
| 1073 | pri_dai->dma_capture.dma_size = 4; |
| 1074 | pri_dai->base = regs_base; |
| 1075 | pri_dai->quirks = quirks; |
| 1076 | |
| 1077 | if (quirks & QUIRK_PRI_6CHAN) |
| 1078 | pri_dai->i2s_dai_drv.playback.channels_max = 6; |
| 1079 | |
| 1080 | if (quirks & QUIRK_SEC_DAI) { |
| 1081 | sec_dai = i2s_alloc_dai(pdev, true); |
| 1082 | if (!sec_dai) { |
| 1083 | dev_err(&pdev->dev, "Unable to alloc I2S_sec\n"); |
| 1084 | ret = -ENOMEM; |
Mark Brown | b960ce7 | 2011-12-03 20:30:37 +0000 | [diff] [blame] | 1085 | goto err; |
Jassi Brar | 1c7ac01 | 2010-11-22 15:36:59 +0900 | [diff] [blame] | 1086 | } |
| 1087 | sec_dai->dma_playback.dma_addr = regs_base + I2STXDS; |
| 1088 | sec_dai->dma_playback.client = |
| 1089 | (struct s3c2410_dma_client *)&sec_dai->dma_playback; |
| 1090 | /* Use iDMA always if SysDMA not provided */ |
| 1091 | sec_dai->dma_playback.channel = dma_pl_sec_chan ? : -1; |
Jassi Brar | 1c7ac01 | 2010-11-22 15:36:59 +0900 | [diff] [blame] | 1092 | sec_dai->dma_playback.dma_size = 4; |
| 1093 | sec_dai->base = regs_base; |
| 1094 | sec_dai->quirks = quirks; |
Sangbeom Kim | 61100f4 | 2011-07-20 17:07:12 +0900 | [diff] [blame] | 1095 | sec_dai->idma_playback.dma_addr = i2s_cfg->idma_addr; |
Jassi Brar | 1c7ac01 | 2010-11-22 15:36:59 +0900 | [diff] [blame] | 1096 | sec_dai->pri_dai = pri_dai; |
| 1097 | pri_dai->sec_dai = sec_dai; |
| 1098 | } |
| 1099 | |
| 1100 | if (i2s_pdata->cfg_gpio && i2s_pdata->cfg_gpio(pdev)) { |
| 1101 | dev_err(&pdev->dev, "Unable to configure gpio\n"); |
| 1102 | ret = -EINVAL; |
Mark Brown | b960ce7 | 2011-12-03 20:30:37 +0000 | [diff] [blame] | 1103 | goto err; |
Jassi Brar | 1c7ac01 | 2010-11-22 15:36:59 +0900 | [diff] [blame] | 1104 | } |
| 1105 | |
| 1106 | snd_soc_register_dai(&pri_dai->pdev->dev, &pri_dai->i2s_dai_drv); |
| 1107 | |
Mark Brown | c5cf4db | 2011-12-08 16:45:03 +0800 | [diff] [blame] | 1108 | pm_runtime_enable(&pdev->dev); |
| 1109 | |
Jassi Brar | 1c7ac01 | 2010-11-22 15:36:59 +0900 | [diff] [blame] | 1110 | return 0; |
Mark Brown | b960ce7 | 2011-12-03 20:30:37 +0000 | [diff] [blame] | 1111 | err: |
Jassi Brar | 1c7ac01 | 2010-11-22 15:36:59 +0900 | [diff] [blame] | 1112 | release_mem_region(regs_base, resource_size(res)); |
| 1113 | |
| 1114 | return ret; |
| 1115 | } |
| 1116 | |
| 1117 | static __devexit int samsung_i2s_remove(struct platform_device *pdev) |
| 1118 | { |
| 1119 | struct i2s_dai *i2s, *other; |
Mark Brown | c5cf4db | 2011-12-08 16:45:03 +0800 | [diff] [blame] | 1120 | struct resource *res; |
Jassi Brar | 1c7ac01 | 2010-11-22 15:36:59 +0900 | [diff] [blame] | 1121 | |
| 1122 | i2s = dev_get_drvdata(&pdev->dev); |
| 1123 | other = i2s->pri_dai ? : i2s->sec_dai; |
| 1124 | |
| 1125 | if (other) { |
| 1126 | other->pri_dai = NULL; |
| 1127 | other->sec_dai = NULL; |
| 1128 | } else { |
Mark Brown | c5cf4db | 2011-12-08 16:45:03 +0800 | [diff] [blame] | 1129 | pm_runtime_disable(&pdev->dev); |
Jassi Brar | 1c7ac01 | 2010-11-22 15:36:59 +0900 | [diff] [blame] | 1130 | res = platform_get_resource(pdev, IORESOURCE_MEM, 0); |
| 1131 | if (res) |
| 1132 | release_mem_region(res->start, resource_size(res)); |
| 1133 | } |
| 1134 | |
| 1135 | i2s->pri_dai = NULL; |
| 1136 | i2s->sec_dai = NULL; |
| 1137 | |
Jassi Brar | 1c7ac01 | 2010-11-22 15:36:59 +0900 | [diff] [blame] | 1138 | snd_soc_unregister_dai(&pdev->dev); |
| 1139 | |
| 1140 | return 0; |
| 1141 | } |
| 1142 | |
| 1143 | static struct platform_driver samsung_i2s_driver = { |
| 1144 | .probe = samsung_i2s_probe, |
Axel Lin | c4c5839 | 2011-10-02 11:20:13 +0800 | [diff] [blame] | 1145 | .remove = __devexit_p(samsung_i2s_remove), |
Jassi Brar | 1c7ac01 | 2010-11-22 15:36:59 +0900 | [diff] [blame] | 1146 | .driver = { |
| 1147 | .name = "samsung-i2s", |
| 1148 | .owner = THIS_MODULE, |
| 1149 | }, |
| 1150 | }; |
| 1151 | |
Mark Brown | e00c3f5 | 2011-11-23 15:20:13 +0000 | [diff] [blame] | 1152 | module_platform_driver(samsung_i2s_driver); |
Jassi Brar | 1c7ac01 | 2010-11-22 15:36:59 +0900 | [diff] [blame] | 1153 | |
| 1154 | /* Module information */ |
Jaswinder Singh | df8ad33 | 2012-02-25 16:24:36 +0530 | [diff] [blame] | 1155 | MODULE_AUTHOR("Jaswinder Singh, <jassisinghbrar@gmail.com>"); |
Jassi Brar | 1c7ac01 | 2010-11-22 15:36:59 +0900 | [diff] [blame] | 1156 | MODULE_DESCRIPTION("Samsung I2S Interface"); |
| 1157 | MODULE_ALIAS("platform:samsung-i2s"); |
| 1158 | MODULE_LICENSE("GPL"); |