| OLD | NEW |
|---|
| (Empty) |
| 1 /* sound/soc/s3c24xx/s3c64xx-i2s-v4.c | |
| 2 * | |
| 3 * ALSA SoC Audio Layer - S3C64XX I2Sv4 driver | |
| 4 * Copyright (c) 2010 Samsung Electronics Co. Ltd | |
| 5 * Author: Jaswinder Singh <jassi.brar@samsung.com> | |
| 6 * | |
| 7 * This program is free software; you can redistribute it and/or modify | |
| 8 * it under the terms of the GNU General Public License version 2 as | |
| 9 * published by the Free Software Foundation. | |
| 10 */ | |
| 11 | |
| 12 #include <linux/clk.h> | |
| 13 #include <linux/gpio.h> | |
| 14 #include <linux/io.h> | |
| 15 | |
| 16 #include <sound/soc.h> | |
| 17 #include <sound/pcm_params.h> | |
| 18 | |
| 19 #include <plat/audio.h> | |
| 20 | |
| 21 #include <mach/map.h> | |
| 22 #include <mach/dma.h> | |
| 23 | |
| 24 #include "s3c-dma.h" | |
| 25 #include "regs-i2s-v2.h" | |
| 26 #include "s3c64xx-i2s.h" | |
| 27 | |
| 28 static struct s3c2410_dma_client s3c64xx_dma_client_out = { | |
| 29 .name = "I2Sv4 PCM Stereo out" | |
| 30 }; | |
| 31 | |
| 32 static struct s3c2410_dma_client s3c64xx_dma_client_in = { | |
| 33 .name = "I2Sv4 PCM Stereo in" | |
| 34 }; | |
| 35 | |
| 36 static struct s3c_dma_params s3c64xx_i2sv4_pcm_stereo_out; | |
| 37 static struct s3c_dma_params s3c64xx_i2sv4_pcm_stereo_in; | |
| 38 static struct s3c_i2sv2_info s3c64xx_i2sv4; | |
| 39 | |
| 40 static int s3c64xx_i2sv4_probe(struct snd_soc_dai *dai) | |
| 41 { | |
| 42 struct s3c_i2sv2_info *i2s = &s3c64xx_i2sv4; | |
| 43 int ret = 0; | |
| 44 | |
| 45 snd_soc_dai_set_drvdata(dai, i2s); | |
| 46 | |
| 47 ret = s3c_i2sv2_probe(dai, i2s, i2s->base); | |
| 48 | |
| 49 return ret; | |
| 50 } | |
| 51 | |
| 52 static int s3c_i2sv4_hw_params(struct snd_pcm_substream *substream, | |
| 53 struct snd_pcm_hw_params *params, | |
| 54 struct snd_soc_dai *cpu_dai) | |
| 55 { | |
| 56 struct s3c_i2sv2_info *i2s = snd_soc_dai_get_drvdata(cpu_dai); | |
| 57 struct s3c_dma_params *dma_data; | |
| 58 u32 iismod; | |
| 59 | |
| 60 dev_dbg(cpu_dai->dev, "Entered %s\n", __func__); | |
| 61 | |
| 62 if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) | |
| 63 dma_data = i2s->dma_playback; | |
| 64 else | |
| 65 dma_data = i2s->dma_capture; | |
| 66 | |
| 67 snd_soc_dai_set_dma_data(cpu_dai, substream, dma_data); | |
| 68 | |
| 69 iismod = readl(i2s->regs + S3C2412_IISMOD); | |
| 70 dev_dbg(cpu_dai->dev, "%s: r: IISMOD: %x\n", __func__, iismod); | |
| 71 | |
| 72 iismod &= ~S3C64XX_IISMOD_BLC_MASK; | |
| 73 switch (params_format(params)) { | |
| 74 case SNDRV_PCM_FORMAT_S8: | |
| 75 iismod |= S3C64XX_IISMOD_BLC_8BIT; | |
| 76 break; | |
| 77 case SNDRV_PCM_FORMAT_S16_LE: | |
| 78 break; | |
| 79 case SNDRV_PCM_FORMAT_S24_LE: | |
| 80 iismod |= S3C64XX_IISMOD_BLC_24BIT; | |
| 81 break; | |
| 82 } | |
| 83 | |
| 84 writel(iismod, i2s->regs + S3C2412_IISMOD); | |
| 85 dev_dbg(cpu_dai->dev, "%s: w: IISMOD: %x\n", __func__, iismod); | |
| 86 | |
| 87 return 0; | |
| 88 } | |
| 89 | |
| 90 static struct snd_soc_dai_ops s3c64xx_i2sv4_dai_ops = { | |
| 91 .hw_params = s3c_i2sv4_hw_params, | |
| 92 }; | |
| 93 | |
| 94 static struct snd_soc_dai_driver s3c64xx_i2s_v4_dai = { | |
| 95 .symmetric_rates = 1, | |
| 96 .playback = { | |
| 97 .channels_min = 2, | |
| 98 .channels_max = 2, | |
| 99 .rates = S3C64XX_I2S_RATES, | |
| 100 .formats = S3C64XX_I2S_FMTS, | |
| 101 }, | |
| 102 .capture = { | |
| 103 .channels_min = 2, | |
| 104 .channels_max = 2, | |
| 105 .rates = S3C64XX_I2S_RATES, | |
| 106 .formats = S3C64XX_I2S_FMTS, | |
| 107 }, | |
| 108 .probe = s3c64xx_i2sv4_probe, | |
| 109 .ops = &s3c64xx_i2sv4_dai_ops, | |
| 110 }; | |
| 111 | |
| 112 static __devinit int s3c64xx_i2sv4_dev_probe(struct platform_device *pdev) | |
| 113 { | |
| 114 struct s3c_audio_pdata *i2s_pdata; | |
| 115 struct s3c_i2sv2_info *i2s; | |
| 116 struct resource *res; | |
| 117 int ret; | |
| 118 | |
| 119 i2s = &s3c64xx_i2sv4; | |
| 120 | |
| 121 i2s->feature |= S3C_FEATURE_CDCLKCON; | |
| 122 | |
| 123 i2s->dma_capture = &s3c64xx_i2sv4_pcm_stereo_in; | |
| 124 i2s->dma_playback = &s3c64xx_i2sv4_pcm_stereo_out; | |
| 125 | |
| 126 res = platform_get_resource(pdev, IORESOURCE_DMA, 0); | |
| 127 if (!res) { | |
| 128 dev_err(&pdev->dev, "Unable to get I2S-TX dma resource\n"); | |
| 129 return -ENXIO; | |
| 130 } | |
| 131 i2s->dma_playback->channel = res->start; | |
| 132 | |
| 133 res = platform_get_resource(pdev, IORESOURCE_DMA, 1); | |
| 134 if (!res) { | |
| 135 dev_err(&pdev->dev, "Unable to get I2S-RX dma resource\n"); | |
| 136 return -ENXIO; | |
| 137 } | |
| 138 i2s->dma_capture->channel = res->start; | |
| 139 | |
| 140 res = platform_get_resource(pdev, IORESOURCE_MEM, 0); | |
| 141 if (!res) { | |
| 142 dev_err(&pdev->dev, "Unable to get I2S SFR address\n"); | |
| 143 return -ENXIO; | |
| 144 } | |
| 145 | |
| 146 if (!request_mem_region(res->start, resource_size(res), | |
| 147 "s3c64xx-i2s-v4")) { | |
| 148 dev_err(&pdev->dev, "Unable to request SFR region\n"); | |
| 149 return -EBUSY; | |
| 150 } | |
| 151 i2s->dma_capture->dma_addr = res->start + S3C2412_IISRXD; | |
| 152 i2s->dma_playback->dma_addr = res->start + S3C2412_IISTXD; | |
| 153 | |
| 154 i2s->dma_capture->client = &s3c64xx_dma_client_in; | |
| 155 i2s->dma_capture->dma_size = 4; | |
| 156 i2s->dma_playback->client = &s3c64xx_dma_client_out; | |
| 157 i2s->dma_playback->dma_size = 4; | |
| 158 | |
| 159 i2s->base = res->start; | |
| 160 | |
| 161 i2s_pdata = pdev->dev.platform_data; | |
| 162 if (i2s_pdata && i2s_pdata->cfg_gpio && i2s_pdata->cfg_gpio(pdev)) { | |
| 163 dev_err(&pdev->dev, "Unable to configure gpio\n"); | |
| 164 return -EINVAL; | |
| 165 } | |
| 166 | |
| 167 i2s->iis_cclk = clk_get(&pdev->dev, "audio-bus"); | |
| 168 if (IS_ERR(i2s->iis_cclk)) { | |
| 169 dev_err(&pdev->dev, "failed to get audio-bus\n"); | |
| 170 ret = PTR_ERR(i2s->iis_cclk); | |
| 171 goto err; | |
| 172 } | |
| 173 | |
| 174 clk_enable(i2s->iis_cclk); | |
| 175 | |
| 176 ret = s3c_i2sv2_register_dai(&pdev->dev, pdev->id, &s3c64xx_i2s_v4_dai); | |
| 177 if (ret != 0) | |
| 178 goto err_i2sv2; | |
| 179 | |
| 180 return 0; | |
| 181 | |
| 182 err_i2sv2: | |
| 183 clk_put(i2s->iis_cclk); | |
| 184 err: | |
| 185 return ret; | |
| 186 } | |
| 187 | |
| 188 static __devexit int s3c64xx_i2sv4_dev_remove(struct platform_device *pdev) | |
| 189 { | |
| 190 struct s3c_i2sv2_info *i2s = &s3c64xx_i2sv4; | |
| 191 struct resource *res; | |
| 192 | |
| 193 snd_soc_unregister_dai(&pdev->dev); | |
| 194 clk_put(i2s->iis_cclk); | |
| 195 | |
| 196 res = platform_get_resource(pdev, IORESOURCE_MEM, 0); | |
| 197 if (res) | |
| 198 release_mem_region(res->start, resource_size(res)); | |
| 199 else | |
| 200 dev_warn(&pdev->dev, "Unable to get I2S SFR address\n"); | |
| 201 | |
| 202 return 0; | |
| 203 } | |
| 204 | |
| 205 static struct platform_driver s3c64xx_i2sv4_driver = { | |
| 206 .probe = s3c64xx_i2sv4_dev_probe, | |
| 207 .remove = s3c64xx_i2sv4_dev_remove, | |
| 208 .driver = { | |
| 209 .name = "s3c64xx-iis-v4", | |
| 210 .owner = THIS_MODULE, | |
| 211 }, | |
| 212 }; | |
| 213 | |
| 214 static int __init s3c64xx_i2sv4_init(void) | |
| 215 { | |
| 216 return platform_driver_register(&s3c64xx_i2sv4_driver); | |
| 217 } | |
| 218 module_init(s3c64xx_i2sv4_init); | |
| 219 | |
| 220 static void __exit s3c64xx_i2sv4_exit(void) | |
| 221 { | |
| 222 platform_driver_unregister(&s3c64xx_i2sv4_driver); | |
| 223 } | |
| 224 module_exit(s3c64xx_i2sv4_exit); | |
| 225 | |
| 226 /* Module information */ | |
| 227 MODULE_AUTHOR("Jaswinder Singh, <jassi.brar@samsung.com>"); | |
| 228 MODULE_DESCRIPTION("S3C64XX I2Sv4 SoC Interface"); | |
| 229 MODULE_LICENSE("GPL"); | |
| 230 MODULE_ALIAS("platform:s3c64xx-iis-v4"); | |
| OLD | NEW |
|---|
Chromium Code Reviews
Issue 6577007:
CHROMIUM: ASoC: Import entire upstream ASoC tree (Closed)
