diff options
Diffstat (limited to 'sound')
-rw-r--r-- | sound/soc/atmel/atmel_ssc_dai.c | 27 | ||||
-rw-r--r-- | sound/soc/bcm/bcm2835-i2s.c | 284 | ||||
-rw-r--r-- | sound/soc/codecs/cs42xx8.c | 10 |
3 files changed, 90 insertions, 231 deletions
diff --git a/sound/soc/atmel/atmel_ssc_dai.c b/sound/soc/atmel/atmel_ssc_dai.c index ba8def5..2768970 100644 --- a/sound/soc/atmel/atmel_ssc_dai.c +++ b/sound/soc/atmel/atmel_ssc_dai.c @@ -285,7 +285,8 @@ static int atmel_ssc_hw_rule_rate(struct snd_pcm_hw_params *params, static int atmel_ssc_startup(struct snd_pcm_substream *substream, struct snd_soc_dai *dai) { - struct atmel_ssc_info *ssc_p = &ssc_info[dai->id]; + struct platform_device *pdev = to_platform_device(dai->dev); + struct atmel_ssc_info *ssc_p = &ssc_info[pdev->id]; struct atmel_pcm_dma_params *dma_params; int dir, dir_mask; int ret; @@ -346,7 +347,8 @@ static int atmel_ssc_startup(struct snd_pcm_substream *substream, static void atmel_ssc_shutdown(struct snd_pcm_substream *substream, struct snd_soc_dai *dai) { - struct atmel_ssc_info *ssc_p = &ssc_info[dai->id]; + struct platform_device *pdev = to_platform_device(dai->dev); + struct atmel_ssc_info *ssc_p = &ssc_info[pdev->id]; struct atmel_pcm_dma_params *dma_params; int dir, dir_mask; @@ -392,7 +394,8 @@ static void atmel_ssc_shutdown(struct snd_pcm_substream *substream, static int atmel_ssc_set_dai_fmt(struct snd_soc_dai *cpu_dai, unsigned int fmt) { - struct atmel_ssc_info *ssc_p = &ssc_info[cpu_dai->id]; + struct platform_device *pdev = to_platform_device(cpu_dai->dev); + struct atmel_ssc_info *ssc_p = &ssc_info[pdev->id]; ssc_p->daifmt = fmt; return 0; @@ -404,7 +407,8 @@ static int atmel_ssc_set_dai_fmt(struct snd_soc_dai *cpu_dai, static int atmel_ssc_set_dai_clkdiv(struct snd_soc_dai *cpu_dai, int div_id, int div) { - struct atmel_ssc_info *ssc_p = &ssc_info[cpu_dai->id]; + struct platform_device *pdev = to_platform_device(cpu_dai->dev); + struct atmel_ssc_info *ssc_p = &ssc_info[pdev->id]; switch (div_id) { case ATMEL_SSC_CMR_DIV: @@ -445,7 +449,8 @@ static int atmel_ssc_hw_params(struct snd_pcm_substream *substream, struct snd_pcm_hw_params *params, struct snd_soc_dai *dai) { - int id = dai->id; + struct platform_device *pdev = to_platform_device(dai->dev); + int id = pdev->id; struct atmel_ssc_info *ssc_p = &ssc_info[id]; struct ssc_device *ssc = ssc_p->ssc; struct atmel_pcm_dma_params *dma_params; @@ -772,7 +777,8 @@ static int atmel_ssc_hw_params(struct snd_pcm_substream *substream, static int atmel_ssc_prepare(struct snd_pcm_substream *substream, struct snd_soc_dai *dai) { - struct atmel_ssc_info *ssc_p = &ssc_info[dai->id]; + struct platform_device *pdev = to_platform_device(dai->dev); + struct atmel_ssc_info *ssc_p = &ssc_info[pdev->id]; struct atmel_pcm_dma_params *dma_params; int dir; @@ -795,7 +801,8 @@ static int atmel_ssc_prepare(struct snd_pcm_substream *substream, static int atmel_ssc_trigger(struct snd_pcm_substream *substream, int cmd, struct snd_soc_dai *dai) { - struct atmel_ssc_info *ssc_p = &ssc_info[dai->id]; + struct platform_device *pdev = to_platform_device(dai->dev); + struct atmel_ssc_info *ssc_p = &ssc_info[pdev->id]; struct atmel_pcm_dma_params *dma_params; int dir; @@ -824,11 +831,12 @@ static int atmel_ssc_trigger(struct snd_pcm_substream *substream, static int atmel_ssc_suspend(struct snd_soc_dai *cpu_dai) { struct atmel_ssc_info *ssc_p; + struct platform_device *pdev = to_platform_device(cpu_dai->dev); if (!cpu_dai->active) return 0; - ssc_p = &ssc_info[cpu_dai->id]; + ssc_p = &ssc_info[pdev->id]; /* Save the status register before disabling transmit and receive */ ssc_p->ssc_state.ssc_sr = ssc_readl(ssc_p->ssc->regs, SR); @@ -852,12 +860,13 @@ static int atmel_ssc_suspend(struct snd_soc_dai *cpu_dai) static int atmel_ssc_resume(struct snd_soc_dai *cpu_dai) { struct atmel_ssc_info *ssc_p; + struct platform_device *pdev = to_platform_device(cpu_dai->dev); u32 cr; if (!cpu_dai->active) return 0; - ssc_p = &ssc_info[cpu_dai->id]; + ssc_p = &ssc_info[pdev->id]; /* restore SSC register settings */ ssc_writel(ssc_p->ssc->regs, TFMR, ssc_p->ssc_state.ssc_tfmr); diff --git a/sound/soc/bcm/bcm2835-i2s.c b/sound/soc/bcm/bcm2835-i2s.c index 3303d5f..1c1f221 100644 --- a/sound/soc/bcm/bcm2835-i2s.c +++ b/sound/soc/bcm/bcm2835-i2s.c @@ -37,6 +37,7 @@ #include <linux/init.h> #include <linux/io.h> #include <linux/module.h> +#include <linux/of_address.h> #include <linux/slab.h> #include <sound/core.h> @@ -46,55 +47,6 @@ #include <sound/pcm_params.h> #include <sound/soc.h> -/* Clock registers */ -#define BCM2835_CLK_PCMCTL_REG 0x00 -#define BCM2835_CLK_PCMDIV_REG 0x04 - -/* Clock register settings */ -#define BCM2835_CLK_PASSWD (0x5a000000) -#define BCM2835_CLK_PASSWD_MASK (0xff000000) -#define BCM2835_CLK_MASH(v) ((v) << 9) -#define BCM2835_CLK_FLIP BIT(8) -#define BCM2835_CLK_BUSY BIT(7) -#define BCM2835_CLK_KILL BIT(5) -#define BCM2835_CLK_ENAB BIT(4) -#define BCM2835_CLK_SRC(v) (v) - -#define BCM2835_CLK_SHIFT (12) -#define BCM2835_CLK_DIVI(v) ((v) << BCM2835_CLK_SHIFT) -#define BCM2835_CLK_DIVF(v) (v) -#define BCM2835_CLK_DIVF_MASK (0xFFF) - -enum { - BCM2835_CLK_MASH_0 = 0, - BCM2835_CLK_MASH_1, - BCM2835_CLK_MASH_2, - BCM2835_CLK_MASH_3, -}; - -enum { - BCM2835_CLK_SRC_GND = 0, - BCM2835_CLK_SRC_OSC, - BCM2835_CLK_SRC_DBG0, - BCM2835_CLK_SRC_DBG1, - BCM2835_CLK_SRC_PLLA, - BCM2835_CLK_SRC_PLLC, - BCM2835_CLK_SRC_PLLD, - BCM2835_CLK_SRC_HDMI, -}; - -/* Most clocks are not useable (freq = 0) */ -static const unsigned int bcm2835_clk_freq[BCM2835_CLK_SRC_HDMI+1] = { - [BCM2835_CLK_SRC_GND] = 0, - [BCM2835_CLK_SRC_OSC] = 19200000, - [BCM2835_CLK_SRC_DBG0] = 0, - [BCM2835_CLK_SRC_DBG1] = 0, - [BCM2835_CLK_SRC_PLLA] = 0, - [BCM2835_CLK_SRC_PLLC] = 0, - [BCM2835_CLK_SRC_PLLD] = 500000000, - [BCM2835_CLK_SRC_HDMI] = 0, -}; - /* I2S registers */ #define BCM2835_I2S_CS_A_REG 0x00 #define BCM2835_I2S_FIFO_A_REG 0x04 @@ -158,10 +110,6 @@ static const unsigned int bcm2835_clk_freq[BCM2835_CLK_SRC_HDMI+1] = { #define BCM2835_I2S_INT_RXR BIT(1) #define BCM2835_I2S_INT_TXW BIT(0) -/* I2S DMA interface */ -/* FIXME: Needs IOMMU support */ -#define BCM2835_VCMMU_SHIFT (0x7E000000 - 0x20000000) - /* General device struct */ struct bcm2835_i2s_dev { struct device *dev; @@ -169,21 +117,23 @@ struct bcm2835_i2s_dev { unsigned int fmt; unsigned int bclk_ratio; - struct regmap *i2s_regmap; - struct regmap *clk_regmap; + struct regmap *i2s_regmap; + struct clk *clk; + bool clk_prepared; }; static void bcm2835_i2s_start_clock(struct bcm2835_i2s_dev *dev) { - /* Start the clock if in master mode */ unsigned int master = dev->fmt & SND_SOC_DAIFMT_MASTER_MASK; + if (dev->clk_prepared) + return; + switch (master) { case SND_SOC_DAIFMT_CBS_CFS: case SND_SOC_DAIFMT_CBS_CFM: - regmap_update_bits(dev->clk_regmap, BCM2835_CLK_PCMCTL_REG, - BCM2835_CLK_PASSWD_MASK | BCM2835_CLK_ENAB, - BCM2835_CLK_PASSWD | BCM2835_CLK_ENAB); + clk_prepare_enable(dev->clk); + dev->clk_prepared = true; break; default: break; @@ -192,28 +142,9 @@ static void bcm2835_i2s_start_clock(struct bcm2835_i2s_dev *dev) static void bcm2835_i2s_stop_clock(struct bcm2835_i2s_dev *dev) { - uint32_t clkreg; - int timeout = 1000; - - /* Stop clock */ - regmap_update_bits(dev->clk_regmap, BCM2835_CLK_PCMCTL_REG, - BCM2835_CLK_PASSWD_MASK | BCM2835_CLK_ENAB, - BCM2835_CLK_PASSWD); - - /* Wait for the BUSY flag going down */ - while (--timeout) { - regmap_read(dev->clk_regmap, BCM2835_CLK_PCMCTL_REG, &clkreg); - if (!(clkreg & BCM2835_CLK_BUSY)) - break; - } - - if (!timeout) { - /* KILL the clock */ - dev_err(dev->dev, "I2S clock didn't stop. Kill the clock!\n"); - regmap_update_bits(dev->clk_regmap, BCM2835_CLK_PCMCTL_REG, - BCM2835_CLK_KILL | BCM2835_CLK_PASSWD_MASK, - BCM2835_CLK_KILL | BCM2835_CLK_PASSWD); - } + if (dev->clk_prepared) + clk_disable_unprepare(dev->clk); + dev->clk_prepared = false; } static void bcm2835_i2s_clear_fifos(struct bcm2835_i2s_dev *dev, @@ -223,8 +154,7 @@ static void bcm2835_i2s_clear_fifos(struct bcm2835_i2s_dev *dev, uint32_t syncval; uint32_t csreg; uint32_t i2s_active_state; - uint32_t clkreg; - uint32_t clk_active_state; + bool clk_was_prepared; uint32_t off; uint32_t clr; @@ -238,15 +168,10 @@ static void bcm2835_i2s_clear_fifos(struct bcm2835_i2s_dev *dev, regmap_read(dev->i2s_regmap, BCM2835_I2S_CS_A_REG, &csreg); i2s_active_state = csreg & (BCM2835_I2S_RXON | BCM2835_I2S_TXON); - regmap_read(dev->clk_regmap, BCM2835_CLK_PCMCTL_REG, &clkreg); - clk_active_state = clkreg & BCM2835_CLK_ENAB; - /* Start clock if not running */ - if (!clk_active_state) { - regmap_update_bits(dev->clk_regmap, BCM2835_CLK_PCMCTL_REG, - BCM2835_CLK_PASSWD_MASK | BCM2835_CLK_ENAB, - BCM2835_CLK_PASSWD | BCM2835_CLK_ENAB); - } + clk_was_prepared = dev->clk_prepared; + if (!clk_was_prepared) + bcm2835_i2s_start_clock(dev); /* Stop I2S module */ regmap_update_bits(dev->i2s_regmap, BCM2835_I2S_CS_A_REG, off, 0); @@ -280,7 +205,7 @@ static void bcm2835_i2s_clear_fifos(struct bcm2835_i2s_dev *dev, dev_err(dev->dev, "I2S SYNC error!\n"); /* Stop clock if it was not running before */ - if (!clk_active_state) + if (!clk_was_prepared) bcm2835_i2s_stop_clock(dev); /* Restore I2S state */ @@ -309,19 +234,9 @@ static int bcm2835_i2s_hw_params(struct snd_pcm_substream *substream, struct snd_soc_dai *dai) { struct bcm2835_i2s_dev *dev = snd_soc_dai_get_drvdata(dai); - unsigned int sampling_rate = params_rate(params); unsigned int data_length, data_delay, bclk_ratio; unsigned int ch1pos, ch2pos, mode, format; - unsigned int mash = BCM2835_CLK_MASH_1; - unsigned int divi, divf, target_frequency; - int clk_src = -1; - unsigned int master = dev->fmt & SND_SOC_DAIFMT_MASTER_MASK; - bool bit_master = (master == SND_SOC_DAIFMT_CBS_CFS - || master == SND_SOC_DAIFMT_CBS_CFM); - - bool frame_master = (master == SND_SOC_DAIFMT_CBS_CFS - || master == SND_SOC_DAIFMT_CBM_CFS); uint32_t csreg; /* @@ -343,11 +258,9 @@ static int bcm2835_i2s_hw_params(struct snd_pcm_substream *substream, switch (params_format(params)) { case SNDRV_PCM_FORMAT_S16_LE: data_length = 16; - bclk_ratio = 40; break; case SNDRV_PCM_FORMAT_S32_LE: data_length = 32; - bclk_ratio = 80; break; default: return -EINVAL; @@ -356,69 +269,12 @@ static int bcm2835_i2s_hw_params(struct snd_pcm_substream *substream, /* If bclk_ratio already set, use that one. */ if (dev->bclk_ratio) bclk_ratio = dev->bclk_ratio; + else + /* otherwise calculate a fitting block ratio */ + bclk_ratio = 2 * data_length; - /* - * Clock Settings - * - * The target frequency of the bit clock is - * sampling rate * frame length - * - * Integer mode: - * Sampling rates that are multiples of 8000 kHz - * can be driven by the oscillator of 19.2 MHz - * with an integer divider as long as the frame length - * is an integer divider of 19200000/8000=2400 as set up above. - * This is no longer possible if the sampling rate - * is too high (e.g. 192 kHz), because the oscillator is too slow. - * - * MASH mode: - * For all other sampling rates, it is not possible to - * have an integer divider. Approximate the clock - * with the MASH module that induces a slight frequency - * variance. To minimize that it is best to have the fastest - * clock here. That is PLLD with 500 MHz. - */ - target_frequency = sampling_rate * bclk_ratio; - clk_src = BCM2835_CLK_SRC_OSC; - mash = BCM2835_CLK_MASH_0; - - if (bcm2835_clk_freq[clk_src] % target_frequency == 0 - && bit_master && frame_master) { - divi = bcm2835_clk_freq[clk_src] / target_frequency; - divf = 0; - } else { - uint64_t dividend; - - if (!dev->bclk_ratio) { - /* - * Overwrite bclk_ratio, because the - * above trick is not needed or can - * not be used. - */ - bclk_ratio = 2 * data_length; - } - - target_frequency = sampling_rate * bclk_ratio; - - clk_src = BCM2835_CLK_SRC_PLLD; - mash = BCM2835_CLK_MASH_1; - - dividend = bcm2835_clk_freq[clk_src]; - dividend <<= BCM2835_CLK_SHIFT; - do_div(dividend, target_frequency); - divi = dividend >> BCM2835_CLK_SHIFT; - divf = dividend & BCM2835_CLK_DIVF_MASK; - } - - /* Set clock divider */ - regmap_write(dev->clk_regmap, BCM2835_CLK_PCMDIV_REG, BCM2835_CLK_PASSWD - | BCM2835_CLK_DIVI(divi) - | BCM2835_CLK_DIVF(divf)); - - /* Setup clock, but don't start it yet */ - regmap_write(dev->clk_regmap, BCM2835_CLK_PCMCTL_REG, BCM2835_CLK_PASSWD - | BCM2835_CLK_MASH(mash) - | BCM2835_CLK_SRC(clk_src)); + /* set target clock rate*/ + clk_set_rate(dev->clk, sampling_rate * bclk_ratio); /* Setup the frame format */ format = BCM2835_I2S_CHEN; @@ -692,7 +548,7 @@ static const struct snd_soc_dai_ops bcm2835_i2s_dai_ops = { .trigger = bcm2835_i2s_trigger, .hw_params = bcm2835_i2s_hw_params, .set_fmt = bcm2835_i2s_set_dai_fmt, - .set_bclk_ratio = bcm2835_i2s_set_dai_bclk_ratio + .set_bclk_ratio = bcm2835_i2s_set_dai_bclk_ratio, }; static int bcm2835_i2s_dai_probe(struct snd_soc_dai *dai) @@ -750,34 +606,14 @@ static bool bcm2835_i2s_precious_reg(struct device *dev, unsigned int reg) }; } -static bool bcm2835_clk_volatile_reg(struct device *dev, unsigned int reg) -{ - switch (reg) { - case BCM2835_CLK_PCMCTL_REG: - return true; - default: - return false; - }; -} - -static const struct regmap_config bcm2835_regmap_config[] = { - { - .reg_bits = 32, - .reg_stride = 4, - .val_bits = 32, - .max_register = BCM2835_I2S_GRAY_REG, - .precious_reg = bcm2835_i2s_precious_reg, - .volatile_reg = bcm2835_i2s_volatile_reg, - .cache_type = REGCACHE_RBTREE, - }, - { - .reg_bits = 32, - .reg_stride = 4, - .val_bits = 32, - .max_register = BCM2835_CLK_PCMDIV_REG, - .volatile_reg = bcm2835_clk_volatile_reg, - .cache_type = REGCACHE_RBTREE, - }, +static const struct regmap_config bcm2835_regmap_config = { + .reg_bits = 32, + .reg_stride = 4, + .val_bits = 32, + .max_register = BCM2835_I2S_GRAY_REG, + .precious_reg = bcm2835_i2s_precious_reg, + .volatile_reg = bcm2835_i2s_volatile_reg, + .cache_type = REGCACHE_RBTREE, }; static const struct snd_soc_component_driver bcm2835_i2s_component = { @@ -787,42 +623,50 @@ static const struct snd_soc_component_driver bcm2835_i2s_component = { static int bcm2835_i2s_probe(struct platform_device *pdev) { struct bcm2835_i2s_dev *dev; - int i; int ret; - struct regmap *regmap[2]; - struct resource *mem[2]; - - /* Request both ioareas */ - for (i = 0; i <= 1; i++) { - void __iomem *base; - - mem[i] = platform_get_resource(pdev, IORESOURCE_MEM, i); - base = devm_ioremap_resource(&pdev->dev, mem[i]); - if (IS_ERR(base)) - return PTR_ERR(base); - - regmap[i] = devm_regmap_init_mmio(&pdev->dev, base, - &bcm2835_regmap_config[i]); - if (IS_ERR(regmap[i])) - return PTR_ERR(regmap[i]); - } + struct resource *mem; + void __iomem *base; + const __be32 *addr; + dma_addr_t dma_base; dev = devm_kzalloc(&pdev->dev, sizeof(*dev), GFP_KERNEL); if (!dev) return -ENOMEM; - dev->i2s_regmap = regmap[0]; - dev->clk_regmap = regmap[1]; + /* get the clock */ + dev->clk_prepared = false; + dev->clk = devm_clk_get(&pdev->dev, NULL); + if (IS_ERR(dev->clk)) { + dev_err(&pdev->dev, "could not get clk: %ld\n", + PTR_ERR(dev->clk)); + return PTR_ERR(dev->clk); + } + + /* Request ioarea */ + mem = platform_get_resource(pdev, IORESOURCE_MEM, 0); + base = devm_ioremap_resource(&pdev->dev, mem); + if (IS_ERR(base)) + return PTR_ERR(base); + + dev->i2s_regmap = devm_regmap_init_mmio(&pdev->dev, base, + &bcm2835_regmap_config); + if (IS_ERR(dev->i2s_regmap)) + return PTR_ERR(dev->i2s_regmap); + + /* Set the DMA address - we have to parse DT ourselves */ + addr = of_get_address(pdev->dev.of_node, 0, NULL, NULL); + if (!addr) { + dev_err(&pdev->dev, "could not get DMA-register address\n"); + return -EINVAL; + } + dma_base = be32_to_cpup(addr); - /* Set the DMA address */ dev->dma_data[SNDRV_PCM_STREAM_PLAYBACK].addr = - (dma_addr_t)mem[0]->start + BCM2835_I2S_FIFO_A_REG - + BCM2835_VCMMU_SHIFT; + dma_base + BCM2835_I2S_FIFO_A_REG; dev->dma_data[SNDRV_PCM_STREAM_CAPTURE].addr = - (dma_addr_t)mem[0]->start + BCM2835_I2S_FIFO_A_REG - + BCM2835_VCMMU_SHIFT; + dma_base + BCM2835_I2S_FIFO_A_REG; /* Set the bus width */ dev->dma_data[SNDRV_PCM_STREAM_PLAYBACK].addr_width = diff --git a/sound/soc/codecs/cs42xx8.c b/sound/soc/codecs/cs42xx8.c index d562e1b..1179101 100644 --- a/sound/soc/codecs/cs42xx8.c +++ b/sound/soc/codecs/cs42xx8.c @@ -44,6 +44,7 @@ struct cs42xx8_priv { bool slave_mode; unsigned long sysclk; + u32 tx_channels; }; /* -127.5dB to 0dB with step of 0.5dB */ @@ -257,6 +258,9 @@ static int cs42xx8_hw_params(struct snd_pcm_substream *substream, u32 ratio = cs42xx8->sysclk / params_rate(params); u32 i, fm, val, mask; + if (tx) + cs42xx8->tx_channels = params_channels(params); + for (i = 0; i < ARRAY_SIZE(cs42xx8_ratios); i++) { if (cs42xx8_ratios[i].ratio == ratio) break; @@ -283,9 +287,11 @@ static int cs42xx8_digital_mute(struct snd_soc_dai *dai, int mute) { struct snd_soc_codec *codec = dai->codec; struct cs42xx8_priv *cs42xx8 = snd_soc_codec_get_drvdata(codec); + u8 dac_unmute = cs42xx8->tx_channels ? + ~((0x1 << cs42xx8->tx_channels) - 1) : 0; - regmap_update_bits(cs42xx8->regmap, CS42XX8_DACMUTE, - CS42XX8_DACMUTE_ALL, mute ? CS42XX8_DACMUTE_ALL : 0); + regmap_write(cs42xx8->regmap, CS42XX8_DACMUTE, + mute ? CS42XX8_DACMUTE_ALL : dac_unmute); return 0; } |