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> |
Padmavathi Venna | 40476f6 | 2013-01-18 17:17:01 +0530 | [diff] [blame] | 18 | #include <linux/of.h> |
| 19 | #include <linux/of_gpio.h> |
Mark Brown | c5cf4db | 2011-12-08 16:45:03 +0800 | [diff] [blame] | 20 | #include <linux/pm_runtime.h> |
Jassi Brar | 1c7ac01 | 2010-11-22 15:36:59 +0900 | [diff] [blame] | 21 | |
Jassi Brar | 1c7ac01 | 2010-11-22 15:36:59 +0900 | [diff] [blame] | 22 | #include <sound/soc.h> |
Seungwhan Youn | 0378b6a | 2011-01-11 07:26:06 +0900 | [diff] [blame] | 23 | #include <sound/pcm_params.h> |
Jassi Brar | 1c7ac01 | 2010-11-22 15:36:59 +0900 | [diff] [blame] | 24 | |
Padmavathi Venna | 40476f6 | 2013-01-18 17:17:01 +0530 | [diff] [blame] | 25 | #include <mach/dma.h> |
| 26 | |
Arnd Bergmann | 436d42c | 2012-08-24 15:22:12 +0200 | [diff] [blame] | 27 | #include <linux/platform_data/asoc-s3c.h> |
Jassi Brar | 1c7ac01 | 2010-11-22 15:36:59 +0900 | [diff] [blame] | 28 | |
| 29 | #include "dma.h" |
Sangbeom Kim | 61100f4 | 2011-07-20 17:07:12 +0900 | [diff] [blame] | 30 | #include "idma.h" |
Jassi Brar | 1c7ac01 | 2010-11-22 15:36:59 +0900 | [diff] [blame] | 31 | #include "i2s.h" |
Sangbeom Kim | 172a453 | 2011-06-20 16:36:18 +0900 | [diff] [blame] | 32 | #include "i2s-regs.h" |
Jassi Brar | 1c7ac01 | 2010-11-22 15:36:59 +0900 | [diff] [blame] | 33 | |
| 34 | #define msecs_to_loops(t) (loops_per_jiffy / 1000 * HZ * t) |
| 35 | |
Padmavathi Venna | 7c62eeb | 2013-01-18 17:17:00 +0530 | [diff] [blame] | 36 | enum samsung_dai_type { |
| 37 | TYPE_PRI, |
| 38 | TYPE_SEC, |
| 39 | }; |
| 40 | |
Padmavathi Venna | 40476f6 | 2013-01-18 17:17:01 +0530 | [diff] [blame] | 41 | struct samsung_i2s_dai_data { |
| 42 | int dai_type; |
Padmavathi Venna | 7da493e | 2013-08-12 15:19:51 +0530 | [diff] [blame] | 43 | u32 quirks; |
Padmavathi Venna | 40476f6 | 2013-01-18 17:17:01 +0530 | [diff] [blame] | 44 | }; |
| 45 | |
Jassi Brar | 1c7ac01 | 2010-11-22 15:36:59 +0900 | [diff] [blame] | 46 | struct i2s_dai { |
| 47 | /* Platform device for this DAI */ |
| 48 | struct platform_device *pdev; |
| 49 | /* IOREMAP'd SFRs */ |
| 50 | void __iomem *addr; |
| 51 | /* Physical base address of SFRs */ |
| 52 | u32 base; |
| 53 | /* Rate of RCLK source clock */ |
| 54 | unsigned long rclk_srcrate; |
| 55 | /* Frame Clock */ |
| 56 | unsigned frmclk; |
| 57 | /* |
| 58 | * Specifically requested RCLK,BCLK by MACHINE Driver. |
| 59 | * 0 indicates CPU driver is free to choose any value. |
| 60 | */ |
| 61 | unsigned rfs, bfs; |
| 62 | /* I2S Controller's core clock */ |
| 63 | struct clk *clk; |
| 64 | /* Clock for generating I2S signals */ |
| 65 | struct clk *op_clk; |
Jassi Brar | 1c7ac01 | 2010-11-22 15:36:59 +0900 | [diff] [blame] | 66 | /* Pointer to the Primary_Fifo if this is Sec_Fifo, NULL otherwise */ |
| 67 | struct i2s_dai *pri_dai; |
| 68 | /* Pointer to the Secondary_Fifo if it has one, NULL otherwise */ |
| 69 | struct i2s_dai *sec_dai; |
| 70 | #define DAI_OPENED (1 << 0) /* Dai is opened */ |
| 71 | #define DAI_MANAGER (1 << 1) /* Dai is the manager */ |
| 72 | unsigned mode; |
| 73 | /* Driver for this DAI */ |
| 74 | struct snd_soc_dai_driver i2s_dai_drv; |
| 75 | /* DMA parameters */ |
| 76 | struct s3c_dma_params dma_playback; |
| 77 | struct s3c_dma_params dma_capture; |
Sangbeom Kim | 61100f4 | 2011-07-20 17:07:12 +0900 | [diff] [blame] | 78 | struct s3c_dma_params idma_playback; |
Jassi Brar | 1c7ac01 | 2010-11-22 15:36:59 +0900 | [diff] [blame] | 79 | u32 quirks; |
| 80 | u32 suspend_i2smod; |
| 81 | u32 suspend_i2scon; |
| 82 | u32 suspend_i2spsr; |
Padmavathi Venna | 40476f6 | 2013-01-18 17:17:01 +0530 | [diff] [blame] | 83 | unsigned long gpios[7]; /* i2s gpio line numbers */ |
Jassi Brar | 1c7ac01 | 2010-11-22 15:36:59 +0900 | [diff] [blame] | 84 | }; |
| 85 | |
| 86 | /* Lock for cross i/f checks */ |
| 87 | static DEFINE_SPINLOCK(lock); |
| 88 | |
| 89 | /* If this is the 'overlay' stereo DAI */ |
| 90 | static inline bool is_secondary(struct i2s_dai *i2s) |
| 91 | { |
| 92 | return i2s->pri_dai ? true : false; |
| 93 | } |
| 94 | |
| 95 | /* If operating in SoC-Slave mode */ |
| 96 | static inline bool is_slave(struct i2s_dai *i2s) |
| 97 | { |
| 98 | return (readl(i2s->addr + I2SMOD) & MOD_SLAVE) ? true : false; |
| 99 | } |
| 100 | |
| 101 | /* If this interface of the controller is transmitting data */ |
| 102 | static inline bool tx_active(struct i2s_dai *i2s) |
| 103 | { |
| 104 | u32 active; |
| 105 | |
| 106 | if (!i2s) |
| 107 | return false; |
| 108 | |
Sangbeom Kim | 3319550 | 2011-06-10 10:36:54 +0900 | [diff] [blame] | 109 | active = readl(i2s->addr + I2SCON); |
Jassi Brar | 1c7ac01 | 2010-11-22 15:36:59 +0900 | [diff] [blame] | 110 | |
| 111 | if (is_secondary(i2s)) |
| 112 | active &= CON_TXSDMA_ACTIVE; |
| 113 | else |
| 114 | active &= CON_TXDMA_ACTIVE; |
| 115 | |
| 116 | return active ? true : false; |
| 117 | } |
| 118 | |
| 119 | /* If the other interface of the controller is transmitting data */ |
| 120 | static inline bool other_tx_active(struct i2s_dai *i2s) |
| 121 | { |
| 122 | struct i2s_dai *other = i2s->pri_dai ? : i2s->sec_dai; |
| 123 | |
| 124 | return tx_active(other); |
| 125 | } |
| 126 | |
| 127 | /* If any interface of the controller is transmitting data */ |
| 128 | static inline bool any_tx_active(struct i2s_dai *i2s) |
| 129 | { |
| 130 | return tx_active(i2s) || other_tx_active(i2s); |
| 131 | } |
| 132 | |
| 133 | /* If this interface of the controller is receiving data */ |
| 134 | static inline bool rx_active(struct i2s_dai *i2s) |
| 135 | { |
| 136 | u32 active; |
| 137 | |
| 138 | if (!i2s) |
| 139 | return false; |
| 140 | |
Sangbeom Kim | 3319550 | 2011-06-10 10:36:54 +0900 | [diff] [blame] | 141 | active = readl(i2s->addr + I2SCON) & CON_RXDMA_ACTIVE; |
Jassi Brar | 1c7ac01 | 2010-11-22 15:36:59 +0900 | [diff] [blame] | 142 | |
| 143 | return active ? true : false; |
| 144 | } |
| 145 | |
| 146 | /* If the other interface of the controller is receiving data */ |
| 147 | static inline bool other_rx_active(struct i2s_dai *i2s) |
| 148 | { |
| 149 | struct i2s_dai *other = i2s->pri_dai ? : i2s->sec_dai; |
| 150 | |
| 151 | return rx_active(other); |
| 152 | } |
| 153 | |
| 154 | /* If any interface of the controller is receiving data */ |
| 155 | static inline bool any_rx_active(struct i2s_dai *i2s) |
| 156 | { |
| 157 | return rx_active(i2s) || other_rx_active(i2s); |
| 158 | } |
| 159 | |
| 160 | /* If the other DAI is transmitting or receiving data */ |
| 161 | static inline bool other_active(struct i2s_dai *i2s) |
| 162 | { |
| 163 | return other_rx_active(i2s) || other_tx_active(i2s); |
| 164 | } |
| 165 | |
| 166 | /* If this DAI is transmitting or receiving data */ |
| 167 | static inline bool this_active(struct i2s_dai *i2s) |
| 168 | { |
| 169 | return tx_active(i2s) || rx_active(i2s); |
| 170 | } |
| 171 | |
| 172 | /* If the controller is active anyway */ |
| 173 | static inline bool any_active(struct i2s_dai *i2s) |
| 174 | { |
| 175 | return this_active(i2s) || other_active(i2s); |
| 176 | } |
| 177 | |
| 178 | static inline struct i2s_dai *to_info(struct snd_soc_dai *dai) |
| 179 | { |
| 180 | return snd_soc_dai_get_drvdata(dai); |
| 181 | } |
| 182 | |
| 183 | static inline bool is_opened(struct i2s_dai *i2s) |
| 184 | { |
| 185 | if (i2s && (i2s->mode & DAI_OPENED)) |
| 186 | return true; |
| 187 | else |
| 188 | return false; |
| 189 | } |
| 190 | |
| 191 | static inline bool is_manager(struct i2s_dai *i2s) |
| 192 | { |
| 193 | if (is_opened(i2s) && (i2s->mode & DAI_MANAGER)) |
| 194 | return true; |
| 195 | else |
| 196 | return false; |
| 197 | } |
| 198 | |
| 199 | /* Read RCLK of I2S (in multiples of LRCLK) */ |
| 200 | static inline unsigned get_rfs(struct i2s_dai *i2s) |
| 201 | { |
Padmavathi Venna | 4ca0c0d | 2013-08-12 15:19:52 +0530 | [diff] [blame] | 202 | u32 rfs; |
| 203 | |
| 204 | if (i2s->quirks & QUIRK_SUPPORTS_TDM) |
| 205 | rfs = readl(i2s->addr + I2SMOD) >> EXYNOS5420_MOD_RCLK_SHIFT; |
| 206 | else |
| 207 | rfs = (readl(i2s->addr + I2SMOD) >> MOD_RCLK_SHIFT); |
Padmavathi Venna | b60be4a | 2013-07-26 19:06:48 +0530 | [diff] [blame] | 208 | rfs &= MOD_RCLK_MASK; |
Jassi Brar | 1c7ac01 | 2010-11-22 15:36:59 +0900 | [diff] [blame] | 209 | |
| 210 | switch (rfs) { |
| 211 | case 3: return 768; |
| 212 | case 2: return 384; |
| 213 | case 1: return 512; |
| 214 | default: return 256; |
| 215 | } |
| 216 | } |
| 217 | |
| 218 | /* Write RCLK of I2S (in multiples of LRCLK) */ |
| 219 | static inline void set_rfs(struct i2s_dai *i2s, unsigned rfs) |
| 220 | { |
| 221 | u32 mod = readl(i2s->addr + I2SMOD); |
Padmavathi Venna | 4ca0c0d | 2013-08-12 15:19:52 +0530 | [diff] [blame] | 222 | int rfs_shift; |
Jassi Brar | 1c7ac01 | 2010-11-22 15:36:59 +0900 | [diff] [blame] | 223 | |
Padmavathi Venna | 4ca0c0d | 2013-08-12 15:19:52 +0530 | [diff] [blame] | 224 | if (i2s->quirks & QUIRK_SUPPORTS_TDM) |
| 225 | rfs_shift = EXYNOS5420_MOD_RCLK_SHIFT; |
| 226 | else |
| 227 | rfs_shift = MOD_RCLK_SHIFT; |
Padmavathi Venna | b60be4a | 2013-07-26 19:06:48 +0530 | [diff] [blame] | 228 | mod &= ~(MOD_RCLK_MASK << rfs_shift); |
Jassi Brar | 1c7ac01 | 2010-11-22 15:36:59 +0900 | [diff] [blame] | 229 | |
| 230 | switch (rfs) { |
| 231 | case 768: |
Padmavathi Venna | b60be4a | 2013-07-26 19:06:48 +0530 | [diff] [blame] | 232 | mod |= (MOD_RCLK_768FS << rfs_shift); |
Jassi Brar | 1c7ac01 | 2010-11-22 15:36:59 +0900 | [diff] [blame] | 233 | break; |
| 234 | case 512: |
Padmavathi Venna | b60be4a | 2013-07-26 19:06:48 +0530 | [diff] [blame] | 235 | mod |= (MOD_RCLK_512FS << rfs_shift); |
Jassi Brar | 1c7ac01 | 2010-11-22 15:36:59 +0900 | [diff] [blame] | 236 | break; |
| 237 | case 384: |
Padmavathi Venna | b60be4a | 2013-07-26 19:06:48 +0530 | [diff] [blame] | 238 | mod |= (MOD_RCLK_384FS << rfs_shift); |
Jassi Brar | 1c7ac01 | 2010-11-22 15:36:59 +0900 | [diff] [blame] | 239 | break; |
| 240 | default: |
Padmavathi Venna | b60be4a | 2013-07-26 19:06:48 +0530 | [diff] [blame] | 241 | mod |= (MOD_RCLK_256FS << rfs_shift); |
Jassi Brar | 1c7ac01 | 2010-11-22 15:36:59 +0900 | [diff] [blame] | 242 | break; |
| 243 | } |
| 244 | |
| 245 | writel(mod, i2s->addr + I2SMOD); |
| 246 | } |
| 247 | |
| 248 | /* Read Bit-Clock of I2S (in multiples of LRCLK) */ |
| 249 | static inline unsigned get_bfs(struct i2s_dai *i2s) |
| 250 | { |
Padmavathi Venna | 4ca0c0d | 2013-08-12 15:19:52 +0530 | [diff] [blame] | 251 | u32 bfs; |
| 252 | |
| 253 | if (i2s->quirks & QUIRK_SUPPORTS_TDM) { |
| 254 | bfs = readl(i2s->addr + I2SMOD) >> EXYNOS5420_MOD_BCLK_SHIFT; |
| 255 | bfs &= EXYNOS5420_MOD_BCLK_MASK; |
| 256 | } else { |
| 257 | bfs = readl(i2s->addr + I2SMOD) >> MOD_BCLK_SHIFT; |
| 258 | bfs &= MOD_BCLK_MASK; |
| 259 | } |
Jassi Brar | 1c7ac01 | 2010-11-22 15:36:59 +0900 | [diff] [blame] | 260 | |
| 261 | switch (bfs) { |
Padmavathi Venna | 4ca0c0d | 2013-08-12 15:19:52 +0530 | [diff] [blame] | 262 | case 8: return 256; |
| 263 | case 7: return 192; |
| 264 | case 6: return 128; |
| 265 | case 5: return 96; |
| 266 | case 4: return 64; |
Jassi Brar | 1c7ac01 | 2010-11-22 15:36:59 +0900 | [diff] [blame] | 267 | case 3: return 24; |
| 268 | case 2: return 16; |
| 269 | case 1: return 48; |
| 270 | default: return 32; |
| 271 | } |
| 272 | } |
| 273 | |
| 274 | /* Write Bit-Clock of I2S (in multiples of LRCLK) */ |
| 275 | static inline void set_bfs(struct i2s_dai *i2s, unsigned bfs) |
| 276 | { |
| 277 | u32 mod = readl(i2s->addr + I2SMOD); |
Padmavathi Venna | 4ca0c0d | 2013-08-12 15:19:52 +0530 | [diff] [blame] | 278 | int bfs_shift; |
| 279 | int tdm = i2s->quirks & QUIRK_SUPPORTS_TDM; |
Jassi Brar | 1c7ac01 | 2010-11-22 15:36:59 +0900 | [diff] [blame] | 280 | |
Padmavathi Venna | 4ca0c0d | 2013-08-12 15:19:52 +0530 | [diff] [blame] | 281 | if (i2s->quirks & QUIRK_SUPPORTS_TDM) { |
| 282 | bfs_shift = EXYNOS5420_MOD_BCLK_SHIFT; |
| 283 | mod &= ~(EXYNOS5420_MOD_BCLK_MASK << bfs_shift); |
| 284 | } else { |
| 285 | bfs_shift = MOD_BCLK_SHIFT; |
| 286 | mod &= ~(MOD_BCLK_MASK << bfs_shift); |
| 287 | } |
| 288 | |
| 289 | /* Non-TDM I2S controllers do not support BCLK > 48 * FS */ |
| 290 | if (!tdm && bfs > 48) { |
| 291 | dev_err(&i2s->pdev->dev, "Unsupported BCLK divider\n"); |
| 292 | return; |
| 293 | } |
Jassi Brar | 1c7ac01 | 2010-11-22 15:36:59 +0900 | [diff] [blame] | 294 | |
| 295 | switch (bfs) { |
| 296 | case 48: |
Padmavathi Venna | b60be4a | 2013-07-26 19:06:48 +0530 | [diff] [blame] | 297 | mod |= (MOD_BCLK_48FS << bfs_shift); |
Jassi Brar | 1c7ac01 | 2010-11-22 15:36:59 +0900 | [diff] [blame] | 298 | break; |
| 299 | case 32: |
Padmavathi Venna | b60be4a | 2013-07-26 19:06:48 +0530 | [diff] [blame] | 300 | mod |= (MOD_BCLK_32FS << bfs_shift); |
Jassi Brar | 1c7ac01 | 2010-11-22 15:36:59 +0900 | [diff] [blame] | 301 | break; |
| 302 | case 24: |
Padmavathi Venna | b60be4a | 2013-07-26 19:06:48 +0530 | [diff] [blame] | 303 | mod |= (MOD_BCLK_24FS << bfs_shift); |
Jassi Brar | 1c7ac01 | 2010-11-22 15:36:59 +0900 | [diff] [blame] | 304 | break; |
| 305 | case 16: |
Padmavathi Venna | b60be4a | 2013-07-26 19:06:48 +0530 | [diff] [blame] | 306 | mod |= (MOD_BCLK_16FS << bfs_shift); |
Jassi Brar | 1c7ac01 | 2010-11-22 15:36:59 +0900 | [diff] [blame] | 307 | break; |
Padmavathi Venna | 4ca0c0d | 2013-08-12 15:19:52 +0530 | [diff] [blame] | 308 | case 64: |
| 309 | mod |= (EXYNOS5420_MOD_BCLK_64FS << bfs_shift); |
| 310 | break; |
| 311 | case 96: |
| 312 | mod |= (EXYNOS5420_MOD_BCLK_96FS << bfs_shift); |
| 313 | break; |
| 314 | case 128: |
| 315 | mod |= (EXYNOS5420_MOD_BCLK_128FS << bfs_shift); |
| 316 | break; |
| 317 | case 192: |
| 318 | mod |= (EXYNOS5420_MOD_BCLK_192FS << bfs_shift); |
| 319 | break; |
| 320 | case 256: |
| 321 | mod |= (EXYNOS5420_MOD_BCLK_256FS << bfs_shift); |
Jassi Brar | 1c7ac01 | 2010-11-22 15:36:59 +0900 | [diff] [blame] | 322 | break; |
| 323 | default: |
| 324 | dev_err(&i2s->pdev->dev, "Wrong BCLK Divider!\n"); |
| 325 | return; |
| 326 | } |
| 327 | |
| 328 | writel(mod, i2s->addr + I2SMOD); |
| 329 | } |
| 330 | |
| 331 | /* Sample-Size */ |
| 332 | static inline int get_blc(struct i2s_dai *i2s) |
| 333 | { |
| 334 | int blc = readl(i2s->addr + I2SMOD); |
| 335 | |
| 336 | blc = (blc >> 13) & 0x3; |
| 337 | |
| 338 | switch (blc) { |
| 339 | case 2: return 24; |
| 340 | case 1: return 8; |
| 341 | default: return 16; |
| 342 | } |
| 343 | } |
| 344 | |
| 345 | /* TX Channel Control */ |
| 346 | static void i2s_txctrl(struct i2s_dai *i2s, int on) |
| 347 | { |
| 348 | void __iomem *addr = i2s->addr; |
| 349 | u32 con = readl(addr + I2SCON); |
| 350 | u32 mod = readl(addr + I2SMOD) & ~MOD_MASK; |
| 351 | |
| 352 | if (on) { |
| 353 | con |= CON_ACTIVE; |
| 354 | con &= ~CON_TXCH_PAUSE; |
| 355 | |
| 356 | if (is_secondary(i2s)) { |
| 357 | con |= CON_TXSDMA_ACTIVE; |
| 358 | con &= ~CON_TXSDMA_PAUSE; |
| 359 | } else { |
| 360 | con |= CON_TXDMA_ACTIVE; |
| 361 | con &= ~CON_TXDMA_PAUSE; |
| 362 | } |
| 363 | |
| 364 | if (any_rx_active(i2s)) |
| 365 | mod |= MOD_TXRX; |
| 366 | else |
| 367 | mod |= MOD_TXONLY; |
| 368 | } else { |
| 369 | if (is_secondary(i2s)) { |
| 370 | con |= CON_TXSDMA_PAUSE; |
| 371 | con &= ~CON_TXSDMA_ACTIVE; |
| 372 | } else { |
| 373 | con |= CON_TXDMA_PAUSE; |
| 374 | con &= ~CON_TXDMA_ACTIVE; |
| 375 | } |
| 376 | |
| 377 | if (other_tx_active(i2s)) { |
| 378 | writel(con, addr + I2SCON); |
| 379 | return; |
| 380 | } |
| 381 | |
| 382 | con |= CON_TXCH_PAUSE; |
| 383 | |
| 384 | if (any_rx_active(i2s)) |
| 385 | mod |= MOD_RXONLY; |
| 386 | else |
| 387 | con &= ~CON_ACTIVE; |
| 388 | } |
| 389 | |
| 390 | writel(mod, addr + I2SMOD); |
| 391 | writel(con, addr + I2SCON); |
| 392 | } |
| 393 | |
| 394 | /* RX Channel Control */ |
| 395 | static void i2s_rxctrl(struct i2s_dai *i2s, int on) |
| 396 | { |
| 397 | void __iomem *addr = i2s->addr; |
| 398 | u32 con = readl(addr + I2SCON); |
| 399 | u32 mod = readl(addr + I2SMOD) & ~MOD_MASK; |
| 400 | |
| 401 | if (on) { |
| 402 | con |= CON_RXDMA_ACTIVE | CON_ACTIVE; |
| 403 | con &= ~(CON_RXDMA_PAUSE | CON_RXCH_PAUSE); |
| 404 | |
| 405 | if (any_tx_active(i2s)) |
| 406 | mod |= MOD_TXRX; |
| 407 | else |
| 408 | mod |= MOD_RXONLY; |
| 409 | } else { |
| 410 | con |= CON_RXDMA_PAUSE | CON_RXCH_PAUSE; |
| 411 | con &= ~CON_RXDMA_ACTIVE; |
| 412 | |
| 413 | if (any_tx_active(i2s)) |
| 414 | mod |= MOD_TXONLY; |
| 415 | else |
| 416 | con &= ~CON_ACTIVE; |
| 417 | } |
| 418 | |
| 419 | writel(mod, addr + I2SMOD); |
| 420 | writel(con, addr + I2SCON); |
| 421 | } |
| 422 | |
| 423 | /* Flush FIFO of an interface */ |
| 424 | static inline void i2s_fifo(struct i2s_dai *i2s, u32 flush) |
| 425 | { |
| 426 | void __iomem *fic; |
| 427 | u32 val; |
| 428 | |
| 429 | if (!i2s) |
| 430 | return; |
| 431 | |
| 432 | if (is_secondary(i2s)) |
| 433 | fic = i2s->addr + I2SFICS; |
| 434 | else |
| 435 | fic = i2s->addr + I2SFIC; |
| 436 | |
| 437 | /* Flush the FIFO */ |
| 438 | writel(readl(fic) | flush, fic); |
| 439 | |
| 440 | /* Be patient */ |
| 441 | val = msecs_to_loops(1) / 1000; /* 1 usec */ |
| 442 | while (--val) |
| 443 | cpu_relax(); |
| 444 | |
| 445 | writel(readl(fic) & ~flush, fic); |
| 446 | } |
| 447 | |
| 448 | static int i2s_set_sysclk(struct snd_soc_dai *dai, |
| 449 | int clk_id, unsigned int rfs, int dir) |
| 450 | { |
| 451 | struct i2s_dai *i2s = to_info(dai); |
| 452 | struct i2s_dai *other = i2s->pri_dai ? : i2s->sec_dai; |
| 453 | u32 mod = readl(i2s->addr + I2SMOD); |
| 454 | |
| 455 | switch (clk_id) { |
| 456 | case SAMSUNG_I2S_CDCLK: |
| 457 | /* Shouldn't matter in GATING(CLOCK_IN) mode */ |
| 458 | if (dir == SND_SOC_CLOCK_IN) |
| 459 | rfs = 0; |
| 460 | |
| 461 | if ((rfs && other->rfs && (other->rfs != rfs)) || |
| 462 | (any_active(i2s) && |
| 463 | (((dir == SND_SOC_CLOCK_IN) |
| 464 | && !(mod & MOD_CDCLKCON)) || |
| 465 | ((dir == SND_SOC_CLOCK_OUT) |
| 466 | && (mod & MOD_CDCLKCON))))) { |
| 467 | dev_err(&i2s->pdev->dev, |
| 468 | "%s:%d Other DAI busy\n", __func__, __LINE__); |
| 469 | return -EAGAIN; |
| 470 | } |
| 471 | |
| 472 | if (dir == SND_SOC_CLOCK_IN) |
| 473 | mod |= MOD_CDCLKCON; |
| 474 | else |
| 475 | mod &= ~MOD_CDCLKCON; |
| 476 | |
| 477 | i2s->rfs = rfs; |
| 478 | break; |
| 479 | |
| 480 | case SAMSUNG_I2S_RCLKSRC_0: /* clock corrsponding to IISMOD[10] := 0 */ |
| 481 | case SAMSUNG_I2S_RCLKSRC_1: /* clock corrsponding to IISMOD[10] := 1 */ |
| 482 | if ((i2s->quirks & QUIRK_NO_MUXPSR) |
| 483 | || (clk_id == SAMSUNG_I2S_RCLKSRC_0)) |
| 484 | clk_id = 0; |
| 485 | else |
| 486 | clk_id = 1; |
| 487 | |
| 488 | if (!any_active(i2s)) { |
| 489 | if (i2s->op_clk) { |
| 490 | if ((clk_id && !(mod & MOD_IMS_SYSMUX)) || |
| 491 | (!clk_id && (mod & MOD_IMS_SYSMUX))) { |
Thomas Abraham | 98614cf | 2012-10-03 08:46:58 +0900 | [diff] [blame] | 492 | clk_disable_unprepare(i2s->op_clk); |
Jassi Brar | 1c7ac01 | 2010-11-22 15:36:59 +0900 | [diff] [blame] | 493 | clk_put(i2s->op_clk); |
| 494 | } else { |
Jassi Brar | 6ce534a | 2010-12-20 11:05:46 +0900 | [diff] [blame] | 495 | i2s->rclk_srcrate = |
| 496 | clk_get_rate(i2s->op_clk); |
Jassi Brar | 1c7ac01 | 2010-11-22 15:36:59 +0900 | [diff] [blame] | 497 | return 0; |
| 498 | } |
| 499 | } |
| 500 | |
Padmavathi Venna | 1974a04 | 2012-11-28 16:17:48 +0530 | [diff] [blame] | 501 | if (clk_id) |
| 502 | i2s->op_clk = clk_get(&i2s->pdev->dev, |
| 503 | "i2s_opclk1"); |
| 504 | else |
| 505 | i2s->op_clk = clk_get(&i2s->pdev->dev, |
| 506 | "i2s_opclk0"); |
Thomas Abraham | 98614cf | 2012-10-03 08:46:58 +0900 | [diff] [blame] | 507 | clk_prepare_enable(i2s->op_clk); |
Jassi Brar | 1c7ac01 | 2010-11-22 15:36:59 +0900 | [diff] [blame] | 508 | i2s->rclk_srcrate = clk_get_rate(i2s->op_clk); |
| 509 | |
| 510 | /* Over-ride the other's */ |
| 511 | if (other) { |
| 512 | other->op_clk = i2s->op_clk; |
| 513 | other->rclk_srcrate = i2s->rclk_srcrate; |
| 514 | } |
| 515 | } else if ((!clk_id && (mod & MOD_IMS_SYSMUX)) |
| 516 | || (clk_id && !(mod & MOD_IMS_SYSMUX))) { |
| 517 | dev_err(&i2s->pdev->dev, |
| 518 | "%s:%d Other DAI busy\n", __func__, __LINE__); |
| 519 | return -EAGAIN; |
| 520 | } else { |
| 521 | /* Call can't be on the active DAI */ |
| 522 | i2s->op_clk = other->op_clk; |
| 523 | i2s->rclk_srcrate = other->rclk_srcrate; |
| 524 | return 0; |
| 525 | } |
| 526 | |
| 527 | if (clk_id == 0) |
| 528 | mod &= ~MOD_IMS_SYSMUX; |
| 529 | else |
| 530 | mod |= MOD_IMS_SYSMUX; |
| 531 | break; |
| 532 | |
| 533 | default: |
| 534 | dev_err(&i2s->pdev->dev, "We don't serve that!\n"); |
| 535 | return -EINVAL; |
| 536 | } |
| 537 | |
| 538 | writel(mod, i2s->addr + I2SMOD); |
| 539 | |
| 540 | return 0; |
| 541 | } |
| 542 | |
| 543 | static int i2s_set_fmt(struct snd_soc_dai *dai, |
| 544 | unsigned int fmt) |
| 545 | { |
| 546 | struct i2s_dai *i2s = to_info(dai); |
| 547 | u32 mod = readl(i2s->addr + I2SMOD); |
Padmavathi Venna | 4ca0c0d | 2013-08-12 15:19:52 +0530 | [diff] [blame] | 548 | int lrp_shift, sdf_shift, sdf_mask, lrp_rlow; |
Jassi Brar | 1c7ac01 | 2010-11-22 15:36:59 +0900 | [diff] [blame] | 549 | u32 tmp = 0; |
| 550 | |
Padmavathi Venna | 4ca0c0d | 2013-08-12 15:19:52 +0530 | [diff] [blame] | 551 | if (i2s->quirks & QUIRK_SUPPORTS_TDM) { |
| 552 | lrp_shift = EXYNOS5420_MOD_LRP_SHIFT; |
| 553 | sdf_shift = EXYNOS5420_MOD_SDF_SHIFT; |
| 554 | } else { |
| 555 | lrp_shift = MOD_LRP_SHIFT; |
| 556 | sdf_shift = MOD_SDF_SHIFT; |
| 557 | } |
| 558 | |
Padmavathi Venna | b60be4a | 2013-07-26 19:06:48 +0530 | [diff] [blame] | 559 | sdf_mask = MOD_SDF_MASK << sdf_shift; |
| 560 | lrp_rlow = MOD_LR_RLOW << lrp_shift; |
| 561 | |
Jassi Brar | 1c7ac01 | 2010-11-22 15:36:59 +0900 | [diff] [blame] | 562 | /* Format is priority */ |
| 563 | switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) { |
| 564 | case SND_SOC_DAIFMT_RIGHT_J: |
Padmavathi Venna | b60be4a | 2013-07-26 19:06:48 +0530 | [diff] [blame] | 565 | tmp |= lrp_rlow; |
| 566 | tmp |= (MOD_SDF_MSB << sdf_shift); |
Jassi Brar | 1c7ac01 | 2010-11-22 15:36:59 +0900 | [diff] [blame] | 567 | break; |
| 568 | case SND_SOC_DAIFMT_LEFT_J: |
Padmavathi Venna | b60be4a | 2013-07-26 19:06:48 +0530 | [diff] [blame] | 569 | tmp |= lrp_rlow; |
| 570 | tmp |= (MOD_SDF_LSB << sdf_shift); |
Jassi Brar | 1c7ac01 | 2010-11-22 15:36:59 +0900 | [diff] [blame] | 571 | break; |
| 572 | case SND_SOC_DAIFMT_I2S: |
Padmavathi Venna | b60be4a | 2013-07-26 19:06:48 +0530 | [diff] [blame] | 573 | tmp |= (MOD_SDF_IIS << sdf_shift); |
Jassi Brar | 1c7ac01 | 2010-11-22 15:36:59 +0900 | [diff] [blame] | 574 | break; |
| 575 | default: |
| 576 | dev_err(&i2s->pdev->dev, "Format not supported\n"); |
| 577 | return -EINVAL; |
| 578 | } |
| 579 | |
| 580 | /* |
| 581 | * INV flag is relative to the FORMAT flag - if set it simply |
| 582 | * flips the polarity specified by the Standard |
| 583 | */ |
| 584 | switch (fmt & SND_SOC_DAIFMT_INV_MASK) { |
| 585 | case SND_SOC_DAIFMT_NB_NF: |
| 586 | break; |
| 587 | case SND_SOC_DAIFMT_NB_IF: |
Padmavathi Venna | b60be4a | 2013-07-26 19:06:48 +0530 | [diff] [blame] | 588 | if (tmp & lrp_rlow) |
| 589 | tmp &= ~lrp_rlow; |
Jassi Brar | 1c7ac01 | 2010-11-22 15:36:59 +0900 | [diff] [blame] | 590 | else |
Padmavathi Venna | b60be4a | 2013-07-26 19:06:48 +0530 | [diff] [blame] | 591 | tmp |= lrp_rlow; |
Jassi Brar | 1c7ac01 | 2010-11-22 15:36:59 +0900 | [diff] [blame] | 592 | break; |
| 593 | default: |
| 594 | dev_err(&i2s->pdev->dev, "Polarity not supported\n"); |
| 595 | return -EINVAL; |
| 596 | } |
| 597 | |
| 598 | switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) { |
| 599 | case SND_SOC_DAIFMT_CBM_CFM: |
| 600 | tmp |= MOD_SLAVE; |
| 601 | break; |
| 602 | case SND_SOC_DAIFMT_CBS_CFS: |
| 603 | /* Set default source clock in Master mode */ |
| 604 | if (i2s->rclk_srcrate == 0) |
| 605 | i2s_set_sysclk(dai, SAMSUNG_I2S_RCLKSRC_0, |
| 606 | 0, SND_SOC_CLOCK_IN); |
| 607 | break; |
| 608 | default: |
| 609 | dev_err(&i2s->pdev->dev, "master/slave format not supported\n"); |
| 610 | return -EINVAL; |
| 611 | } |
| 612 | |
Padmavathi Venna | b60be4a | 2013-07-26 19:06:48 +0530 | [diff] [blame] | 613 | /* |
| 614 | * Don't change the I2S mode if any controller is active on this |
| 615 | * channel. |
| 616 | */ |
Jassi Brar | 1c7ac01 | 2010-11-22 15:36:59 +0900 | [diff] [blame] | 617 | if (any_active(i2s) && |
Padmavathi Venna | b60be4a | 2013-07-26 19:06:48 +0530 | [diff] [blame] | 618 | ((mod & (sdf_mask | lrp_rlow | MOD_SLAVE)) != tmp)) { |
Jassi Brar | 1c7ac01 | 2010-11-22 15:36:59 +0900 | [diff] [blame] | 619 | dev_err(&i2s->pdev->dev, |
| 620 | "%s:%d Other DAI busy\n", __func__, __LINE__); |
| 621 | return -EAGAIN; |
| 622 | } |
| 623 | |
Padmavathi Venna | b60be4a | 2013-07-26 19:06:48 +0530 | [diff] [blame] | 624 | mod &= ~(sdf_mask | lrp_rlow | MOD_SLAVE); |
Jassi Brar | 1c7ac01 | 2010-11-22 15:36:59 +0900 | [diff] [blame] | 625 | mod |= tmp; |
| 626 | writel(mod, i2s->addr + I2SMOD); |
| 627 | |
| 628 | return 0; |
| 629 | } |
| 630 | |
| 631 | static int i2s_hw_params(struct snd_pcm_substream *substream, |
| 632 | struct snd_pcm_hw_params *params, struct snd_soc_dai *dai) |
| 633 | { |
| 634 | struct i2s_dai *i2s = to_info(dai); |
| 635 | u32 mod = readl(i2s->addr + I2SMOD); |
| 636 | |
| 637 | if (!is_secondary(i2s)) |
| 638 | mod &= ~(MOD_DC2_EN | MOD_DC1_EN); |
| 639 | |
| 640 | switch (params_channels(params)) { |
| 641 | case 6: |
| 642 | mod |= MOD_DC2_EN; |
| 643 | case 4: |
| 644 | mod |= MOD_DC1_EN; |
| 645 | break; |
| 646 | case 2: |
Sangsu Park | 588fb70 | 2012-03-16 15:40:53 +0900 | [diff] [blame] | 647 | if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) |
| 648 | i2s->dma_playback.dma_size = 4; |
| 649 | else |
| 650 | i2s->dma_capture.dma_size = 4; |
| 651 | break; |
| 652 | case 1: |
| 653 | if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) |
| 654 | i2s->dma_playback.dma_size = 2; |
| 655 | else |
| 656 | i2s->dma_capture.dma_size = 2; |
| 657 | |
Jassi Brar | 1c7ac01 | 2010-11-22 15:36:59 +0900 | [diff] [blame] | 658 | break; |
| 659 | default: |
| 660 | dev_err(&i2s->pdev->dev, "%d channels not supported\n", |
| 661 | params_channels(params)); |
| 662 | return -EINVAL; |
| 663 | } |
| 664 | |
| 665 | if (is_secondary(i2s)) |
| 666 | mod &= ~MOD_BLCS_MASK; |
| 667 | else |
| 668 | mod &= ~MOD_BLCP_MASK; |
| 669 | |
| 670 | if (is_manager(i2s)) |
| 671 | mod &= ~MOD_BLC_MASK; |
| 672 | |
| 673 | switch (params_format(params)) { |
| 674 | case SNDRV_PCM_FORMAT_S8: |
| 675 | if (is_secondary(i2s)) |
| 676 | mod |= MOD_BLCS_8BIT; |
| 677 | else |
| 678 | mod |= MOD_BLCP_8BIT; |
| 679 | if (is_manager(i2s)) |
| 680 | mod |= MOD_BLC_8BIT; |
| 681 | break; |
| 682 | case SNDRV_PCM_FORMAT_S16_LE: |
| 683 | if (is_secondary(i2s)) |
| 684 | mod |= MOD_BLCS_16BIT; |
| 685 | else |
| 686 | mod |= MOD_BLCP_16BIT; |
| 687 | if (is_manager(i2s)) |
| 688 | mod |= MOD_BLC_16BIT; |
| 689 | break; |
| 690 | case SNDRV_PCM_FORMAT_S24_LE: |
| 691 | if (is_secondary(i2s)) |
| 692 | mod |= MOD_BLCS_24BIT; |
| 693 | else |
| 694 | mod |= MOD_BLCP_24BIT; |
| 695 | if (is_manager(i2s)) |
| 696 | mod |= MOD_BLC_24BIT; |
| 697 | break; |
| 698 | default: |
| 699 | dev_err(&i2s->pdev->dev, "Format(%d) not supported\n", |
| 700 | params_format(params)); |
| 701 | return -EINVAL; |
| 702 | } |
| 703 | writel(mod, i2s->addr + I2SMOD); |
| 704 | |
Mark Brown | d37bdf7 | 2013-12-05 14:14:52 +0000 | [diff] [blame^] | 705 | samsung_asoc_init_dma_data(dai, &i2s->dma_playback, &i2s->dma_capture); |
| 706 | |
Jassi Brar | 1c7ac01 | 2010-11-22 15:36:59 +0900 | [diff] [blame] | 707 | i2s->frmclk = params_rate(params); |
| 708 | |
| 709 | return 0; |
| 710 | } |
| 711 | |
| 712 | /* We set constraints on the substream acc to the version of I2S */ |
| 713 | static int i2s_startup(struct snd_pcm_substream *substream, |
| 714 | struct snd_soc_dai *dai) |
| 715 | { |
| 716 | struct i2s_dai *i2s = to_info(dai); |
| 717 | struct i2s_dai *other = i2s->pri_dai ? : i2s->sec_dai; |
| 718 | unsigned long flags; |
| 719 | |
| 720 | spin_lock_irqsave(&lock, flags); |
| 721 | |
| 722 | i2s->mode |= DAI_OPENED; |
| 723 | |
| 724 | if (is_manager(other)) |
| 725 | i2s->mode &= ~DAI_MANAGER; |
| 726 | else |
| 727 | i2s->mode |= DAI_MANAGER; |
| 728 | |
| 729 | /* Enforce set_sysclk in Master mode */ |
| 730 | i2s->rclk_srcrate = 0; |
| 731 | |
Padmavathi Venna | 2d77828 | 2013-01-24 18:05:31 +0530 | [diff] [blame] | 732 | if (!any_active(i2s) && (i2s->quirks & QUIRK_NEED_RSTCLR)) |
| 733 | writel(CON_RSTCLR, i2s->addr + I2SCON); |
| 734 | |
Jassi Brar | 1c7ac01 | 2010-11-22 15:36:59 +0900 | [diff] [blame] | 735 | spin_unlock_irqrestore(&lock, flags); |
| 736 | |
| 737 | return 0; |
| 738 | } |
| 739 | |
| 740 | static void i2s_shutdown(struct snd_pcm_substream *substream, |
| 741 | struct snd_soc_dai *dai) |
| 742 | { |
| 743 | struct i2s_dai *i2s = to_info(dai); |
| 744 | struct i2s_dai *other = i2s->pri_dai ? : i2s->sec_dai; |
| 745 | unsigned long flags; |
| 746 | |
| 747 | spin_lock_irqsave(&lock, flags); |
| 748 | |
| 749 | i2s->mode &= ~DAI_OPENED; |
| 750 | i2s->mode &= ~DAI_MANAGER; |
| 751 | |
| 752 | if (is_opened(other)) |
| 753 | other->mode |= DAI_MANAGER; |
| 754 | |
| 755 | /* Reset any constraint on RFS and BFS */ |
| 756 | i2s->rfs = 0; |
| 757 | i2s->bfs = 0; |
| 758 | |
| 759 | spin_unlock_irqrestore(&lock, flags); |
| 760 | |
| 761 | /* Gate CDCLK by default */ |
| 762 | if (!is_opened(other)) |
| 763 | i2s_set_sysclk(dai, SAMSUNG_I2S_CDCLK, |
| 764 | 0, SND_SOC_CLOCK_IN); |
| 765 | } |
| 766 | |
| 767 | static int config_setup(struct i2s_dai *i2s) |
| 768 | { |
| 769 | struct i2s_dai *other = i2s->pri_dai ? : i2s->sec_dai; |
| 770 | unsigned rfs, bfs, blc; |
| 771 | u32 psr; |
| 772 | |
| 773 | blc = get_blc(i2s); |
| 774 | |
| 775 | bfs = i2s->bfs; |
| 776 | |
| 777 | if (!bfs && other) |
| 778 | bfs = other->bfs; |
| 779 | |
| 780 | /* Select least possible multiple(2) if no constraint set */ |
| 781 | if (!bfs) |
| 782 | bfs = blc * 2; |
| 783 | |
| 784 | rfs = i2s->rfs; |
| 785 | |
| 786 | if (!rfs && other) |
| 787 | rfs = other->rfs; |
| 788 | |
| 789 | if ((rfs == 256 || rfs == 512) && (blc == 24)) { |
| 790 | dev_err(&i2s->pdev->dev, |
| 791 | "%d-RFS not supported for 24-blc\n", rfs); |
| 792 | return -EINVAL; |
| 793 | } |
| 794 | |
| 795 | if (!rfs) { |
| 796 | if (bfs == 16 || bfs == 32) |
| 797 | rfs = 256; |
| 798 | else |
| 799 | rfs = 384; |
| 800 | } |
| 801 | |
| 802 | /* If already setup and running */ |
| 803 | if (any_active(i2s) && (get_rfs(i2s) != rfs || get_bfs(i2s) != bfs)) { |
| 804 | dev_err(&i2s->pdev->dev, |
| 805 | "%s:%d Other DAI busy\n", __func__, __LINE__); |
| 806 | return -EAGAIN; |
| 807 | } |
| 808 | |
Jassi Brar | 1c7ac01 | 2010-11-22 15:36:59 +0900 | [diff] [blame] | 809 | set_bfs(i2s, bfs); |
| 810 | set_rfs(i2s, rfs); |
| 811 | |
Padmavathi Venna | 7701001 | 2013-07-11 12:38:25 +0530 | [diff] [blame] | 812 | /* Don't bother with PSR in Slave mode */ |
| 813 | if (is_slave(i2s)) |
| 814 | return 0; |
| 815 | |
Jassi Brar | 1c7ac01 | 2010-11-22 15:36:59 +0900 | [diff] [blame] | 816 | if (!(i2s->quirks & QUIRK_NO_MUXPSR)) { |
| 817 | psr = i2s->rclk_srcrate / i2s->frmclk / rfs; |
| 818 | writel(((psr - 1) << 8) | PSR_PSREN, i2s->addr + I2SPSR); |
| 819 | dev_dbg(&i2s->pdev->dev, |
| 820 | "RCLK_SRC=%luHz PSR=%u, RCLK=%dfs, BCLK=%dfs\n", |
| 821 | i2s->rclk_srcrate, psr, rfs, bfs); |
| 822 | } |
| 823 | |
| 824 | return 0; |
| 825 | } |
| 826 | |
| 827 | static int i2s_trigger(struct snd_pcm_substream *substream, |
| 828 | int cmd, struct snd_soc_dai *dai) |
| 829 | { |
| 830 | int capture = (substream->stream == SNDRV_PCM_STREAM_CAPTURE); |
| 831 | struct snd_soc_pcm_runtime *rtd = substream->private_data; |
| 832 | struct i2s_dai *i2s = to_info(rtd->cpu_dai); |
| 833 | unsigned long flags; |
| 834 | |
| 835 | switch (cmd) { |
| 836 | case SNDRV_PCM_TRIGGER_START: |
| 837 | case SNDRV_PCM_TRIGGER_RESUME: |
| 838 | case SNDRV_PCM_TRIGGER_PAUSE_RELEASE: |
| 839 | local_irq_save(flags); |
| 840 | |
Jassi Brar | 1c7ac01 | 2010-11-22 15:36:59 +0900 | [diff] [blame] | 841 | if (config_setup(i2s)) { |
| 842 | local_irq_restore(flags); |
| 843 | return -EINVAL; |
| 844 | } |
| 845 | |
| 846 | if (capture) |
| 847 | i2s_rxctrl(i2s, 1); |
| 848 | else |
| 849 | i2s_txctrl(i2s, 1); |
| 850 | |
| 851 | local_irq_restore(flags); |
| 852 | break; |
| 853 | case SNDRV_PCM_TRIGGER_STOP: |
| 854 | case SNDRV_PCM_TRIGGER_SUSPEND: |
| 855 | case SNDRV_PCM_TRIGGER_PAUSE_PUSH: |
| 856 | local_irq_save(flags); |
| 857 | |
Jassi Brar | c90887f | 2012-02-25 16:42:34 +0530 | [diff] [blame] | 858 | if (capture) { |
Jassi Brar | 1c7ac01 | 2010-11-22 15:36:59 +0900 | [diff] [blame] | 859 | i2s_rxctrl(i2s, 0); |
Jassi Brar | 775bc97 | 2010-12-20 11:05:47 +0900 | [diff] [blame] | 860 | i2s_fifo(i2s, FIC_RXFLUSH); |
Jassi Brar | c90887f | 2012-02-25 16:42:34 +0530 | [diff] [blame] | 861 | } else { |
| 862 | i2s_txctrl(i2s, 0); |
Jassi Brar | 775bc97 | 2010-12-20 11:05:47 +0900 | [diff] [blame] | 863 | i2s_fifo(i2s, FIC_TXFLUSH); |
Jassi Brar | c90887f | 2012-02-25 16:42:34 +0530 | [diff] [blame] | 864 | } |
Jassi Brar | 775bc97 | 2010-12-20 11:05:47 +0900 | [diff] [blame] | 865 | |
Jassi Brar | 1c7ac01 | 2010-11-22 15:36:59 +0900 | [diff] [blame] | 866 | local_irq_restore(flags); |
| 867 | break; |
| 868 | } |
| 869 | |
| 870 | return 0; |
| 871 | } |
| 872 | |
| 873 | static int i2s_set_clkdiv(struct snd_soc_dai *dai, |
| 874 | int div_id, int div) |
| 875 | { |
| 876 | struct i2s_dai *i2s = to_info(dai); |
| 877 | struct i2s_dai *other = i2s->pri_dai ? : i2s->sec_dai; |
| 878 | |
| 879 | switch (div_id) { |
| 880 | case SAMSUNG_I2S_DIV_BCLK: |
| 881 | if ((any_active(i2s) && div && (get_bfs(i2s) != div)) |
| 882 | || (other && other->bfs && (other->bfs != div))) { |
| 883 | dev_err(&i2s->pdev->dev, |
| 884 | "%s:%d Other DAI busy\n", __func__, __LINE__); |
| 885 | return -EAGAIN; |
| 886 | } |
| 887 | i2s->bfs = div; |
| 888 | break; |
| 889 | default: |
| 890 | dev_err(&i2s->pdev->dev, |
| 891 | "Invalid clock divider(%d)\n", div_id); |
| 892 | return -EINVAL; |
| 893 | } |
| 894 | |
| 895 | return 0; |
| 896 | } |
| 897 | |
| 898 | static snd_pcm_sframes_t |
| 899 | i2s_delay(struct snd_pcm_substream *substream, struct snd_soc_dai *dai) |
| 900 | { |
| 901 | struct i2s_dai *i2s = to_info(dai); |
| 902 | u32 reg = readl(i2s->addr + I2SFIC); |
| 903 | snd_pcm_sframes_t delay; |
| 904 | |
| 905 | if (substream->stream == SNDRV_PCM_STREAM_CAPTURE) |
| 906 | delay = FIC_RXCOUNT(reg); |
| 907 | else if (is_secondary(i2s)) |
| 908 | delay = FICS_TXCOUNT(readl(i2s->addr + I2SFICS)); |
| 909 | else |
| 910 | delay = FIC_TXCOUNT(reg); |
| 911 | |
| 912 | return delay; |
| 913 | } |
| 914 | |
| 915 | #ifdef CONFIG_PM |
| 916 | static int i2s_suspend(struct snd_soc_dai *dai) |
| 917 | { |
| 918 | struct i2s_dai *i2s = to_info(dai); |
| 919 | |
| 920 | if (dai->active) { |
| 921 | i2s->suspend_i2smod = readl(i2s->addr + I2SMOD); |
| 922 | i2s->suspend_i2scon = readl(i2s->addr + I2SCON); |
| 923 | i2s->suspend_i2spsr = readl(i2s->addr + I2SPSR); |
| 924 | } |
| 925 | |
| 926 | return 0; |
| 927 | } |
| 928 | |
| 929 | static int i2s_resume(struct snd_soc_dai *dai) |
| 930 | { |
| 931 | struct i2s_dai *i2s = to_info(dai); |
| 932 | |
| 933 | if (dai->active) { |
| 934 | writel(i2s->suspend_i2scon, i2s->addr + I2SCON); |
| 935 | writel(i2s->suspend_i2smod, i2s->addr + I2SMOD); |
| 936 | writel(i2s->suspend_i2spsr, i2s->addr + I2SPSR); |
| 937 | } |
| 938 | |
| 939 | return 0; |
| 940 | } |
| 941 | #else |
| 942 | #define i2s_suspend NULL |
| 943 | #define i2s_resume NULL |
| 944 | #endif |
| 945 | |
| 946 | static int samsung_i2s_dai_probe(struct snd_soc_dai *dai) |
| 947 | { |
| 948 | struct i2s_dai *i2s = to_info(dai); |
| 949 | struct i2s_dai *other = i2s->pri_dai ? : i2s->sec_dai; |
| 950 | |
Mark Brown | 3688569 | 2013-10-19 15:23:15 +0100 | [diff] [blame] | 951 | if (other && other->clk) { /* If this is probe on secondary */ |
| 952 | samsung_asoc_init_dma_data(dai, &other->sec_dai->dma_playback, |
| 953 | NULL); |
Jassi Brar | 1c7ac01 | 2010-11-22 15:36:59 +0900 | [diff] [blame] | 954 | goto probe_exit; |
Mark Brown | 3688569 | 2013-10-19 15:23:15 +0100 | [diff] [blame] | 955 | } |
Jassi Brar | 1c7ac01 | 2010-11-22 15:36:59 +0900 | [diff] [blame] | 956 | |
| 957 | i2s->addr = ioremap(i2s->base, 0x100); |
| 958 | if (i2s->addr == NULL) { |
| 959 | dev_err(&i2s->pdev->dev, "cannot ioremap registers\n"); |
| 960 | return -ENXIO; |
| 961 | } |
| 962 | |
| 963 | i2s->clk = clk_get(&i2s->pdev->dev, "iis"); |
| 964 | if (IS_ERR(i2s->clk)) { |
| 965 | dev_err(&i2s->pdev->dev, "failed to get i2s_clock\n"); |
| 966 | iounmap(i2s->addr); |
| 967 | return -ENOENT; |
| 968 | } |
Thomas Abraham | 98614cf | 2012-10-03 08:46:58 +0900 | [diff] [blame] | 969 | clk_prepare_enable(i2s->clk); |
Jassi Brar | 1c7ac01 | 2010-11-22 15:36:59 +0900 | [diff] [blame] | 970 | |
Mark Brown | 3688569 | 2013-10-19 15:23:15 +0100 | [diff] [blame] | 971 | samsung_asoc_init_dma_data(dai, &i2s->dma_playback, &i2s->dma_capture); |
Mark Brown | 511e3033 | 2013-10-17 21:18:40 +0100 | [diff] [blame] | 972 | |
Jassi Brar | 1c7ac01 | 2010-11-22 15:36:59 +0900 | [diff] [blame] | 973 | if (other) { |
| 974 | other->addr = i2s->addr; |
| 975 | other->clk = i2s->clk; |
| 976 | } |
| 977 | |
| 978 | if (i2s->quirks & QUIRK_NEED_RSTCLR) |
| 979 | writel(CON_RSTCLR, i2s->addr + I2SCON); |
| 980 | |
Sangbeom Kim | 61100f4 | 2011-07-20 17:07:12 +0900 | [diff] [blame] | 981 | if (i2s->quirks & QUIRK_SEC_DAI) |
Mark Brown | 9b8f569 | 2011-11-27 21:35:40 +0000 | [diff] [blame] | 982 | idma_reg_addr_init(i2s->addr, |
Sangbeom Kim | 61100f4 | 2011-07-20 17:07:12 +0900 | [diff] [blame] | 983 | i2s->sec_dai->idma_playback.dma_addr); |
| 984 | |
Jassi Brar | 1c7ac01 | 2010-11-22 15:36:59 +0900 | [diff] [blame] | 985 | probe_exit: |
| 986 | /* Reset any constraint on RFS and BFS */ |
| 987 | i2s->rfs = 0; |
| 988 | i2s->bfs = 0; |
| 989 | i2s_txctrl(i2s, 0); |
| 990 | i2s_rxctrl(i2s, 0); |
| 991 | i2s_fifo(i2s, FIC_TXFLUSH); |
| 992 | i2s_fifo(other, FIC_TXFLUSH); |
| 993 | i2s_fifo(i2s, FIC_RXFLUSH); |
| 994 | |
| 995 | /* Gate CDCLK by default */ |
| 996 | if (!is_opened(other)) |
| 997 | i2s_set_sysclk(dai, SAMSUNG_I2S_CDCLK, |
| 998 | 0, SND_SOC_CLOCK_IN); |
| 999 | |
| 1000 | return 0; |
| 1001 | } |
| 1002 | |
| 1003 | static int samsung_i2s_dai_remove(struct snd_soc_dai *dai) |
| 1004 | { |
| 1005 | struct i2s_dai *i2s = snd_soc_dai_get_drvdata(dai); |
| 1006 | struct i2s_dai *other = i2s->pri_dai ? : i2s->sec_dai; |
| 1007 | |
| 1008 | if (!other || !other->clk) { |
| 1009 | |
| 1010 | if (i2s->quirks & QUIRK_NEED_RSTCLR) |
| 1011 | writel(0, i2s->addr + I2SCON); |
| 1012 | |
Thomas Abraham | 98614cf | 2012-10-03 08:46:58 +0900 | [diff] [blame] | 1013 | clk_disable_unprepare(i2s->clk); |
Jassi Brar | 1c7ac01 | 2010-11-22 15:36:59 +0900 | [diff] [blame] | 1014 | clk_put(i2s->clk); |
| 1015 | |
| 1016 | iounmap(i2s->addr); |
| 1017 | } |
| 1018 | |
| 1019 | i2s->clk = NULL; |
| 1020 | |
| 1021 | return 0; |
| 1022 | } |
| 1023 | |
Lars-Peter Clausen | 85e7652 | 2011-11-23 11:40:40 +0100 | [diff] [blame] | 1024 | static const struct snd_soc_dai_ops samsung_i2s_dai_ops = { |
Jassi Brar | 1c7ac01 | 2010-11-22 15:36:59 +0900 | [diff] [blame] | 1025 | .trigger = i2s_trigger, |
| 1026 | .hw_params = i2s_hw_params, |
| 1027 | .set_fmt = i2s_set_fmt, |
| 1028 | .set_clkdiv = i2s_set_clkdiv, |
| 1029 | .set_sysclk = i2s_set_sysclk, |
| 1030 | .startup = i2s_startup, |
| 1031 | .shutdown = i2s_shutdown, |
| 1032 | .delay = i2s_delay, |
| 1033 | }; |
| 1034 | |
Kuninori Morimoto | 4b82853 | 2013-03-21 03:35:55 -0700 | [diff] [blame] | 1035 | static const struct snd_soc_component_driver samsung_i2s_component = { |
| 1036 | .name = "samsung-i2s", |
| 1037 | }; |
| 1038 | |
Jassi Brar | 1c7ac01 | 2010-11-22 15:36:59 +0900 | [diff] [blame] | 1039 | #define SAMSUNG_I2S_RATES SNDRV_PCM_RATE_8000_96000 |
| 1040 | |
| 1041 | #define SAMSUNG_I2S_FMTS (SNDRV_PCM_FMTBIT_S8 | \ |
| 1042 | SNDRV_PCM_FMTBIT_S16_LE | \ |
| 1043 | SNDRV_PCM_FMTBIT_S24_LE) |
| 1044 | |
Bill Pemberton | fdca21a | 2012-12-07 09:26:15 -0500 | [diff] [blame] | 1045 | static struct i2s_dai *i2s_alloc_dai(struct platform_device *pdev, bool sec) |
Jassi Brar | 1c7ac01 | 2010-11-22 15:36:59 +0900 | [diff] [blame] | 1046 | { |
| 1047 | struct i2s_dai *i2s; |
Prathyush K | c6f9b1e | 2013-04-02 16:53:02 +0530 | [diff] [blame] | 1048 | int ret; |
Jassi Brar | 1c7ac01 | 2010-11-22 15:36:59 +0900 | [diff] [blame] | 1049 | |
Mark Brown | b960ce7 | 2011-12-03 20:30:37 +0000 | [diff] [blame] | 1050 | i2s = devm_kzalloc(&pdev->dev, sizeof(struct i2s_dai), GFP_KERNEL); |
Jassi Brar | 1c7ac01 | 2010-11-22 15:36:59 +0900 | [diff] [blame] | 1051 | if (i2s == NULL) |
| 1052 | return NULL; |
| 1053 | |
| 1054 | i2s->pdev = pdev; |
| 1055 | i2s->pri_dai = NULL; |
| 1056 | i2s->sec_dai = NULL; |
| 1057 | i2s->i2s_dai_drv.symmetric_rates = 1; |
| 1058 | i2s->i2s_dai_drv.probe = samsung_i2s_dai_probe; |
| 1059 | i2s->i2s_dai_drv.remove = samsung_i2s_dai_remove; |
| 1060 | i2s->i2s_dai_drv.ops = &samsung_i2s_dai_ops; |
| 1061 | i2s->i2s_dai_drv.suspend = i2s_suspend; |
| 1062 | i2s->i2s_dai_drv.resume = i2s_resume; |
Charles Keepax | a0ff6ea | 2013-09-11 15:27:29 +0100 | [diff] [blame] | 1063 | i2s->i2s_dai_drv.playback.channels_min = 1; |
Jassi Brar | 1c7ac01 | 2010-11-22 15:36:59 +0900 | [diff] [blame] | 1064 | i2s->i2s_dai_drv.playback.channels_max = 2; |
| 1065 | i2s->i2s_dai_drv.playback.rates = SAMSUNG_I2S_RATES; |
| 1066 | i2s->i2s_dai_drv.playback.formats = SAMSUNG_I2S_FMTS; |
| 1067 | |
| 1068 | if (!sec) { |
Sangsu Park | 588fb70 | 2012-03-16 15:40:53 +0900 | [diff] [blame] | 1069 | i2s->i2s_dai_drv.capture.channels_min = 1; |
Jassi Brar | 1c7ac01 | 2010-11-22 15:36:59 +0900 | [diff] [blame] | 1070 | i2s->i2s_dai_drv.capture.channels_max = 2; |
| 1071 | i2s->i2s_dai_drv.capture.rates = SAMSUNG_I2S_RATES; |
| 1072 | i2s->i2s_dai_drv.capture.formats = SAMSUNG_I2S_FMTS; |
Prathyush K | c6f9b1e | 2013-04-02 16:53:02 +0530 | [diff] [blame] | 1073 | dev_set_drvdata(&i2s->pdev->dev, i2s); |
Jassi Brar | 1c7ac01 | 2010-11-22 15:36:59 +0900 | [diff] [blame] | 1074 | } else { /* Create a new platform_device for Secondary */ |
Prathyush K | c6f9b1e | 2013-04-02 16:53:02 +0530 | [diff] [blame] | 1075 | i2s->pdev = platform_device_alloc("samsung-i2s-sec", -1); |
Wei Yongjun | 29ca9c7 | 2013-10-25 17:06:24 +0800 | [diff] [blame] | 1076 | if (!i2s->pdev) |
Jassi Brar | 1c7ac01 | 2010-11-22 15:36:59 +0900 | [diff] [blame] | 1077 | return NULL; |
Jassi Brar | 1c7ac01 | 2010-11-22 15:36:59 +0900 | [diff] [blame] | 1078 | |
Mark Brown | 2f6f0ff | 2013-08-01 11:02:47 +0100 | [diff] [blame] | 1079 | i2s->pdev->dev.parent = &pdev->dev; |
| 1080 | |
Prathyush K | c6f9b1e | 2013-04-02 16:53:02 +0530 | [diff] [blame] | 1081 | platform_set_drvdata(i2s->pdev, i2s); |
| 1082 | ret = platform_device_add(i2s->pdev); |
| 1083 | if (ret < 0) |
| 1084 | return NULL; |
| 1085 | } |
Jassi Brar | 1c7ac01 | 2010-11-22 15:36:59 +0900 | [diff] [blame] | 1086 | |
| 1087 | return i2s; |
| 1088 | } |
| 1089 | |
Padmavathi Venna | 40476f6 | 2013-01-18 17:17:01 +0530 | [diff] [blame] | 1090 | static const struct of_device_id exynos_i2s_match[]; |
| 1091 | |
Padmavathi Venna | 7da493e | 2013-08-12 15:19:51 +0530 | [diff] [blame] | 1092 | static inline const struct samsung_i2s_dai_data *samsung_i2s_get_driver_data( |
| 1093 | struct platform_device *pdev) |
Padmavathi Venna | 7c62eeb | 2013-01-18 17:17:00 +0530 | [diff] [blame] | 1094 | { |
Padmavathi Venna | 40476f6 | 2013-01-18 17:17:01 +0530 | [diff] [blame] | 1095 | #ifdef CONFIG_OF |
Padmavathi Venna | 40476f6 | 2013-01-18 17:17:01 +0530 | [diff] [blame] | 1096 | if (pdev->dev.of_node) { |
| 1097 | const struct of_device_id *match; |
| 1098 | match = of_match_node(exynos_i2s_match, pdev->dev.of_node); |
Padmavathi Venna | 7da493e | 2013-08-12 15:19:51 +0530 | [diff] [blame] | 1099 | return match->data; |
Padmavathi Venna | 40476f6 | 2013-01-18 17:17:01 +0530 | [diff] [blame] | 1100 | } else |
| 1101 | #endif |
Padmavathi Venna | 7da493e | 2013-08-12 15:19:51 +0530 | [diff] [blame] | 1102 | return (struct samsung_i2s_dai_data *) |
| 1103 | platform_get_device_id(pdev)->driver_data; |
Padmavathi Venna | 7c62eeb | 2013-01-18 17:17:00 +0530 | [diff] [blame] | 1104 | } |
| 1105 | |
R. Chandrasekar | 5b1d3c3 | 2013-01-30 17:41:04 +0530 | [diff] [blame] | 1106 | #ifdef CONFIG_PM_RUNTIME |
| 1107 | static int i2s_runtime_suspend(struct device *dev) |
| 1108 | { |
| 1109 | struct i2s_dai *i2s = dev_get_drvdata(dev); |
| 1110 | |
| 1111 | clk_disable_unprepare(i2s->clk); |
| 1112 | |
| 1113 | return 0; |
| 1114 | } |
| 1115 | |
| 1116 | static int i2s_runtime_resume(struct device *dev) |
| 1117 | { |
| 1118 | struct i2s_dai *i2s = dev_get_drvdata(dev); |
| 1119 | |
| 1120 | clk_prepare_enable(i2s->clk); |
| 1121 | |
| 1122 | return 0; |
| 1123 | } |
| 1124 | #endif /* CONFIG_PM_RUNTIME */ |
| 1125 | |
Bill Pemberton | fdca21a | 2012-12-07 09:26:15 -0500 | [diff] [blame] | 1126 | static int samsung_i2s_probe(struct platform_device *pdev) |
Jassi Brar | 1c7ac01 | 2010-11-22 15:36:59 +0900 | [diff] [blame] | 1127 | { |
Jassi Brar | 1c7ac01 | 2010-11-22 15:36:59 +0900 | [diff] [blame] | 1128 | struct i2s_dai *pri_dai, *sec_dai = NULL; |
Padmavathi Venna | 40476f6 | 2013-01-18 17:17:01 +0530 | [diff] [blame] | 1129 | struct s3c_audio_pdata *i2s_pdata = pdev->dev.platform_data; |
| 1130 | struct samsung_i2s *i2s_cfg = NULL; |
Jassi Brar | 1c7ac01 | 2010-11-22 15:36:59 +0900 | [diff] [blame] | 1131 | struct resource *res; |
Padmavathi Venna | 40476f6 | 2013-01-18 17:17:01 +0530 | [diff] [blame] | 1132 | u32 regs_base, quirks = 0, idma_addr = 0; |
| 1133 | struct device_node *np = pdev->dev.of_node; |
Padmavathi Venna | 7da493e | 2013-08-12 15:19:51 +0530 | [diff] [blame] | 1134 | const struct samsung_i2s_dai_data *i2s_dai_data; |
Jassi Brar | 1c7ac01 | 2010-11-22 15:36:59 +0900 | [diff] [blame] | 1135 | int ret = 0; |
| 1136 | |
| 1137 | /* Call during Seconday interface registration */ |
Padmavathi Venna | 7da493e | 2013-08-12 15:19:51 +0530 | [diff] [blame] | 1138 | i2s_dai_data = samsung_i2s_get_driver_data(pdev); |
Padmavathi Venna | 7c62eeb | 2013-01-18 17:17:00 +0530 | [diff] [blame] | 1139 | |
Padmavathi Venna | 7da493e | 2013-08-12 15:19:51 +0530 | [diff] [blame] | 1140 | if (i2s_dai_data->dai_type == TYPE_SEC) { |
Jassi Brar | 1c7ac01 | 2010-11-22 15:36:59 +0900 | [diff] [blame] | 1141 | sec_dai = dev_get_drvdata(&pdev->dev); |
Prathyush K | a9b977e | 2013-04-02 16:53:01 +0530 | [diff] [blame] | 1142 | if (!sec_dai) { |
| 1143 | dev_err(&pdev->dev, "Unable to get drvdata\n"); |
| 1144 | return -EFAULT; |
| 1145 | } |
Mark Brown | d644a11 | 2013-09-04 20:37:51 +0100 | [diff] [blame] | 1146 | devm_snd_soc_register_component(&sec_dai->pdev->dev, |
| 1147 | &samsung_i2s_component, |
| 1148 | &sec_dai->i2s_dai_drv, 1); |
Mark Brown | 85ff3c2 | 2013-08-19 22:59:05 +0100 | [diff] [blame] | 1149 | samsung_asoc_dma_platform_register(&pdev->dev); |
Jassi Brar | 1c7ac01 | 2010-11-22 15:36:59 +0900 | [diff] [blame] | 1150 | return 0; |
| 1151 | } |
| 1152 | |
Padmavathi Venna | 40476f6 | 2013-01-18 17:17:01 +0530 | [diff] [blame] | 1153 | pri_dai = i2s_alloc_dai(pdev, false); |
| 1154 | if (!pri_dai) { |
| 1155 | dev_err(&pdev->dev, "Unable to alloc I2S_pri\n"); |
| 1156 | return -ENOMEM; |
Jassi Brar | 1c7ac01 | 2010-11-22 15:36:59 +0900 | [diff] [blame] | 1157 | } |
| 1158 | |
Padmavathi Venna | 40476f6 | 2013-01-18 17:17:01 +0530 | [diff] [blame] | 1159 | if (!np) { |
| 1160 | res = platform_get_resource(pdev, IORESOURCE_DMA, 0); |
| 1161 | if (!res) { |
| 1162 | dev_err(&pdev->dev, |
| 1163 | "Unable to get I2S-TX dma resource\n"); |
| 1164 | return -ENXIO; |
| 1165 | } |
| 1166 | pri_dai->dma_playback.channel = res->start; |
Jassi Brar | 1c7ac01 | 2010-11-22 15:36:59 +0900 | [diff] [blame] | 1167 | |
Padmavathi Venna | 40476f6 | 2013-01-18 17:17:01 +0530 | [diff] [blame] | 1168 | res = platform_get_resource(pdev, IORESOURCE_DMA, 1); |
| 1169 | if (!res) { |
| 1170 | dev_err(&pdev->dev, |
| 1171 | "Unable to get I2S-RX dma resource\n"); |
| 1172 | return -ENXIO; |
| 1173 | } |
| 1174 | pri_dai->dma_capture.channel = res->start; |
Jassi Brar | 1c7ac01 | 2010-11-22 15:36:59 +0900 | [diff] [blame] | 1175 | |
Padmavathi Venna | 40476f6 | 2013-01-18 17:17:01 +0530 | [diff] [blame] | 1176 | if (i2s_pdata == NULL) { |
| 1177 | dev_err(&pdev->dev, "Can't work without s3c_audio_pdata\n"); |
| 1178 | return -EINVAL; |
| 1179 | } |
| 1180 | |
| 1181 | if (&i2s_pdata->type) |
| 1182 | i2s_cfg = &i2s_pdata->type.i2s; |
| 1183 | |
| 1184 | if (i2s_cfg) { |
| 1185 | quirks = i2s_cfg->quirks; |
| 1186 | idma_addr = i2s_cfg->idma_addr; |
| 1187 | } |
| 1188 | } else { |
Padmavathi Venna | 7da493e | 2013-08-12 15:19:51 +0530 | [diff] [blame] | 1189 | quirks = i2s_dai_data->quirks; |
Padmavathi Venna | 40476f6 | 2013-01-18 17:17:01 +0530 | [diff] [blame] | 1190 | if (of_property_read_u32(np, "samsung,idma-addr", |
| 1191 | &idma_addr)) { |
| 1192 | if (quirks & QUIRK_SEC_DAI) { |
| 1193 | dev_err(&pdev->dev, "idma address is not"\ |
| 1194 | "specified"); |
| 1195 | return -EINVAL; |
| 1196 | } |
| 1197 | } |
| 1198 | } |
Jassi Brar | 1c7ac01 | 2010-11-22 15:36:59 +0900 | [diff] [blame] | 1199 | |
| 1200 | res = platform_get_resource(pdev, IORESOURCE_MEM, 0); |
| 1201 | if (!res) { |
| 1202 | dev_err(&pdev->dev, "Unable to get I2S SFR address\n"); |
| 1203 | return -ENXIO; |
| 1204 | } |
| 1205 | |
| 1206 | if (!request_mem_region(res->start, resource_size(res), |
| 1207 | "samsung-i2s")) { |
| 1208 | dev_err(&pdev->dev, "Unable to request SFR region\n"); |
| 1209 | return -EBUSY; |
| 1210 | } |
| 1211 | regs_base = res->start; |
| 1212 | |
Jassi Brar | 1c7ac01 | 2010-11-22 15:36:59 +0900 | [diff] [blame] | 1213 | pri_dai->dma_playback.dma_addr = regs_base + I2STXD; |
| 1214 | pri_dai->dma_capture.dma_addr = regs_base + I2SRXD; |
| 1215 | pri_dai->dma_playback.client = |
| 1216 | (struct s3c2410_dma_client *)&pri_dai->dma_playback; |
Padmavathi Venna | 40476f6 | 2013-01-18 17:17:01 +0530 | [diff] [blame] | 1217 | pri_dai->dma_playback.ch_name = "tx"; |
Jassi Brar | 1c7ac01 | 2010-11-22 15:36:59 +0900 | [diff] [blame] | 1218 | pri_dai->dma_capture.client = |
| 1219 | (struct s3c2410_dma_client *)&pri_dai->dma_capture; |
Padmavathi Venna | 40476f6 | 2013-01-18 17:17:01 +0530 | [diff] [blame] | 1220 | pri_dai->dma_capture.ch_name = "rx"; |
Jassi Brar | 1c7ac01 | 2010-11-22 15:36:59 +0900 | [diff] [blame] | 1221 | pri_dai->dma_playback.dma_size = 4; |
| 1222 | pri_dai->dma_capture.dma_size = 4; |
| 1223 | pri_dai->base = regs_base; |
| 1224 | pri_dai->quirks = quirks; |
| 1225 | |
| 1226 | if (quirks & QUIRK_PRI_6CHAN) |
| 1227 | pri_dai->i2s_dai_drv.playback.channels_max = 6; |
| 1228 | |
| 1229 | if (quirks & QUIRK_SEC_DAI) { |
| 1230 | sec_dai = i2s_alloc_dai(pdev, true); |
| 1231 | if (!sec_dai) { |
| 1232 | dev_err(&pdev->dev, "Unable to alloc I2S_sec\n"); |
| 1233 | ret = -ENOMEM; |
Mark Brown | b960ce7 | 2011-12-03 20:30:37 +0000 | [diff] [blame] | 1234 | goto err; |
Jassi Brar | 1c7ac01 | 2010-11-22 15:36:59 +0900 | [diff] [blame] | 1235 | } |
| 1236 | sec_dai->dma_playback.dma_addr = regs_base + I2STXDS; |
| 1237 | sec_dai->dma_playback.client = |
| 1238 | (struct s3c2410_dma_client *)&sec_dai->dma_playback; |
Padmavathi Venna | 40476f6 | 2013-01-18 17:17:01 +0530 | [diff] [blame] | 1239 | sec_dai->dma_playback.ch_name = "tx-sec"; |
| 1240 | |
| 1241 | if (!np) { |
| 1242 | res = platform_get_resource(pdev, IORESOURCE_DMA, 2); |
| 1243 | if (res) |
| 1244 | sec_dai->dma_playback.channel = res->start; |
| 1245 | } |
| 1246 | |
Jassi Brar | 1c7ac01 | 2010-11-22 15:36:59 +0900 | [diff] [blame] | 1247 | sec_dai->dma_playback.dma_size = 4; |
| 1248 | sec_dai->base = regs_base; |
| 1249 | sec_dai->quirks = quirks; |
Padmavathi Venna | 40476f6 | 2013-01-18 17:17:01 +0530 | [diff] [blame] | 1250 | sec_dai->idma_playback.dma_addr = idma_addr; |
Jassi Brar | 1c7ac01 | 2010-11-22 15:36:59 +0900 | [diff] [blame] | 1251 | sec_dai->pri_dai = pri_dai; |
| 1252 | pri_dai->sec_dai = sec_dai; |
| 1253 | } |
| 1254 | |
Mark Brown | 0429ffe | 2013-07-02 13:10:28 +0100 | [diff] [blame] | 1255 | if (i2s_pdata && i2s_pdata->cfg_gpio && i2s_pdata->cfg_gpio(pdev)) { |
| 1256 | dev_err(&pdev->dev, "Unable to configure gpio\n"); |
| 1257 | ret = -EINVAL; |
| 1258 | goto err; |
Jassi Brar | 1c7ac01 | 2010-11-22 15:36:59 +0900 | [diff] [blame] | 1259 | } |
| 1260 | |
Mark Brown | d644a11 | 2013-09-04 20:37:51 +0100 | [diff] [blame] | 1261 | devm_snd_soc_register_component(&pri_dai->pdev->dev, |
| 1262 | &samsung_i2s_component, |
| 1263 | &pri_dai->i2s_dai_drv, 1); |
Jassi Brar | 1c7ac01 | 2010-11-22 15:36:59 +0900 | [diff] [blame] | 1264 | |
Mark Brown | c5cf4db | 2011-12-08 16:45:03 +0800 | [diff] [blame] | 1265 | pm_runtime_enable(&pdev->dev); |
| 1266 | |
Mark Brown | 85ff3c2 | 2013-08-19 22:59:05 +0100 | [diff] [blame] | 1267 | samsung_asoc_dma_platform_register(&pdev->dev); |
Padmavathi Venna | a08485d8 | 2012-12-07 13:59:21 +0530 | [diff] [blame] | 1268 | |
Jassi Brar | 1c7ac01 | 2010-11-22 15:36:59 +0900 | [diff] [blame] | 1269 | return 0; |
Mark Brown | b960ce7 | 2011-12-03 20:30:37 +0000 | [diff] [blame] | 1270 | err: |
Jassi Brar | 1c7ac01 | 2010-11-22 15:36:59 +0900 | [diff] [blame] | 1271 | release_mem_region(regs_base, resource_size(res)); |
| 1272 | |
| 1273 | return ret; |
| 1274 | } |
| 1275 | |
Bill Pemberton | fdca21a | 2012-12-07 09:26:15 -0500 | [diff] [blame] | 1276 | static int samsung_i2s_remove(struct platform_device *pdev) |
Jassi Brar | 1c7ac01 | 2010-11-22 15:36:59 +0900 | [diff] [blame] | 1277 | { |
| 1278 | struct i2s_dai *i2s, *other; |
Mark Brown | c5cf4db | 2011-12-08 16:45:03 +0800 | [diff] [blame] | 1279 | struct resource *res; |
Jassi Brar | 1c7ac01 | 2010-11-22 15:36:59 +0900 | [diff] [blame] | 1280 | |
| 1281 | i2s = dev_get_drvdata(&pdev->dev); |
| 1282 | other = i2s->pri_dai ? : i2s->sec_dai; |
| 1283 | |
| 1284 | if (other) { |
| 1285 | other->pri_dai = NULL; |
| 1286 | other->sec_dai = NULL; |
| 1287 | } else { |
Mark Brown | c5cf4db | 2011-12-08 16:45:03 +0800 | [diff] [blame] | 1288 | pm_runtime_disable(&pdev->dev); |
Jassi Brar | 1c7ac01 | 2010-11-22 15:36:59 +0900 | [diff] [blame] | 1289 | res = platform_get_resource(pdev, IORESOURCE_MEM, 0); |
| 1290 | if (res) |
| 1291 | release_mem_region(res->start, resource_size(res)); |
| 1292 | } |
| 1293 | |
| 1294 | i2s->pri_dai = NULL; |
| 1295 | i2s->sec_dai = NULL; |
| 1296 | |
Mark Brown | 85ff3c2 | 2013-08-19 22:59:05 +0100 | [diff] [blame] | 1297 | samsung_asoc_dma_platform_unregister(&pdev->dev); |
Jassi Brar | 1c7ac01 | 2010-11-22 15:36:59 +0900 | [diff] [blame] | 1298 | |
| 1299 | return 0; |
| 1300 | } |
| 1301 | |
Padmavathi Venna | 7da493e | 2013-08-12 15:19:51 +0530 | [diff] [blame] | 1302 | static const struct samsung_i2s_dai_data i2sv3_dai_type = { |
| 1303 | .dai_type = TYPE_PRI, |
| 1304 | .quirks = QUIRK_NO_MUXPSR, |
| 1305 | }; |
| 1306 | |
| 1307 | static const struct samsung_i2s_dai_data i2sv5_dai_type = { |
| 1308 | .dai_type = TYPE_PRI, |
| 1309 | .quirks = QUIRK_PRI_6CHAN | QUIRK_SEC_DAI | QUIRK_NEED_RSTCLR, |
| 1310 | }; |
| 1311 | |
Padmavathi Venna | 4ca0c0d | 2013-08-12 15:19:52 +0530 | [diff] [blame] | 1312 | static const struct samsung_i2s_dai_data i2sv6_dai_type = { |
| 1313 | .dai_type = TYPE_PRI, |
| 1314 | .quirks = QUIRK_PRI_6CHAN | QUIRK_SEC_DAI | QUIRK_NEED_RSTCLR | |
| 1315 | QUIRK_SUPPORTS_TDM, |
| 1316 | }; |
| 1317 | |
Padmavathi Venna | 7da493e | 2013-08-12 15:19:51 +0530 | [diff] [blame] | 1318 | static const struct samsung_i2s_dai_data samsung_dai_type_pri = { |
| 1319 | .dai_type = TYPE_PRI, |
| 1320 | }; |
| 1321 | |
| 1322 | static const struct samsung_i2s_dai_data samsung_dai_type_sec = { |
| 1323 | .dai_type = TYPE_SEC, |
| 1324 | }; |
| 1325 | |
Padmavathi Venna | 7c62eeb | 2013-01-18 17:17:00 +0530 | [diff] [blame] | 1326 | static struct platform_device_id samsung_i2s_driver_ids[] = { |
| 1327 | { |
| 1328 | .name = "samsung-i2s", |
Padmavathi Venna | 7da493e | 2013-08-12 15:19:51 +0530 | [diff] [blame] | 1329 | .driver_data = (kernel_ulong_t)&samsung_dai_type_pri, |
Padmavathi Venna | 7c62eeb | 2013-01-18 17:17:00 +0530 | [diff] [blame] | 1330 | }, { |
| 1331 | .name = "samsung-i2s-sec", |
Padmavathi Venna | 7da493e | 2013-08-12 15:19:51 +0530 | [diff] [blame] | 1332 | .driver_data = (kernel_ulong_t)&samsung_dai_type_sec, |
Padmavathi Venna | 7c62eeb | 2013-01-18 17:17:00 +0530 | [diff] [blame] | 1333 | }, |
| 1334 | {}, |
| 1335 | }; |
Arnd Bergmann | 2af1955 | 2013-04-11 02:05:03 +0200 | [diff] [blame] | 1336 | MODULE_DEVICE_TABLE(platform, samsung_i2s_driver_ids); |
Padmavathi Venna | 7c62eeb | 2013-01-18 17:17:00 +0530 | [diff] [blame] | 1337 | |
Padmavathi Venna | 40476f6 | 2013-01-18 17:17:01 +0530 | [diff] [blame] | 1338 | #ifdef CONFIG_OF |
Padmavathi Venna | 40476f6 | 2013-01-18 17:17:01 +0530 | [diff] [blame] | 1339 | static const struct of_device_id exynos_i2s_match[] = { |
Padmavathi Venna | 7da493e | 2013-08-12 15:19:51 +0530 | [diff] [blame] | 1340 | { |
| 1341 | .compatible = "samsung,s3c6410-i2s", |
| 1342 | .data = &i2sv3_dai_type, |
| 1343 | }, { |
| 1344 | .compatible = "samsung,s5pv210-i2s", |
| 1345 | .data = &i2sv5_dai_type, |
Padmavathi Venna | 4ca0c0d | 2013-08-12 15:19:52 +0530 | [diff] [blame] | 1346 | }, { |
| 1347 | .compatible = "samsung,exynos5420-i2s", |
| 1348 | .data = &i2sv6_dai_type, |
Padmavathi Venna | 40476f6 | 2013-01-18 17:17:01 +0530 | [diff] [blame] | 1349 | }, |
| 1350 | {}, |
| 1351 | }; |
| 1352 | MODULE_DEVICE_TABLE(of, exynos_i2s_match); |
| 1353 | #endif |
| 1354 | |
R. Chandrasekar | 5b1d3c3 | 2013-01-30 17:41:04 +0530 | [diff] [blame] | 1355 | static const struct dev_pm_ops samsung_i2s_pm = { |
| 1356 | SET_RUNTIME_PM_OPS(i2s_runtime_suspend, |
| 1357 | i2s_runtime_resume, NULL) |
| 1358 | }; |
| 1359 | |
Jassi Brar | 1c7ac01 | 2010-11-22 15:36:59 +0900 | [diff] [blame] | 1360 | static struct platform_driver samsung_i2s_driver = { |
| 1361 | .probe = samsung_i2s_probe, |
Bill Pemberton | fdca21a | 2012-12-07 09:26:15 -0500 | [diff] [blame] | 1362 | .remove = samsung_i2s_remove, |
Padmavathi Venna | 7c62eeb | 2013-01-18 17:17:00 +0530 | [diff] [blame] | 1363 | .id_table = samsung_i2s_driver_ids, |
Jassi Brar | 1c7ac01 | 2010-11-22 15:36:59 +0900 | [diff] [blame] | 1364 | .driver = { |
| 1365 | .name = "samsung-i2s", |
| 1366 | .owner = THIS_MODULE, |
Padmavathi Venna | 40476f6 | 2013-01-18 17:17:01 +0530 | [diff] [blame] | 1367 | .of_match_table = of_match_ptr(exynos_i2s_match), |
R. Chandrasekar | 5b1d3c3 | 2013-01-30 17:41:04 +0530 | [diff] [blame] | 1368 | .pm = &samsung_i2s_pm, |
Jassi Brar | 1c7ac01 | 2010-11-22 15:36:59 +0900 | [diff] [blame] | 1369 | }, |
| 1370 | }; |
| 1371 | |
Mark Brown | e00c3f5 | 2011-11-23 15:20:13 +0000 | [diff] [blame] | 1372 | module_platform_driver(samsung_i2s_driver); |
Jassi Brar | 1c7ac01 | 2010-11-22 15:36:59 +0900 | [diff] [blame] | 1373 | |
| 1374 | /* Module information */ |
Jaswinder Singh | df8ad33 | 2012-02-25 16:24:36 +0530 | [diff] [blame] | 1375 | MODULE_AUTHOR("Jaswinder Singh, <jassisinghbrar@gmail.com>"); |
Jassi Brar | 1c7ac01 | 2010-11-22 15:36:59 +0900 | [diff] [blame] | 1376 | MODULE_DESCRIPTION("Samsung I2S Interface"); |
| 1377 | MODULE_ALIAS("platform:samsung-i2s"); |
| 1378 | MODULE_LICENSE("GPL"); |