ASoC: img: Add driver for SPDIF input controller
Add driver for Imagination Technologies SDPIF input controller Signed-off-by: Damien.Horsley <Damien.Horsley@imgtec.com> Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
Damien.Horsley
Mark Brown
Родитель
4e8bc8edd5
Коммит
c4458b740e
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@ -26,3 +26,11 @@ config SND_SOC_IMG_PARALLEL_OUT
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help
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Say Y or M if you want to add support for parallel out driver for
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Imagination Technologies parallel out device.
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config SND_SOC_IMG_SPDIF_IN
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tristate "Imagination SPDIF Input Device Driver"
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depends on SND_SOC_IMG
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select SND_SOC_GENERIC_DMAENGINE_PCM
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help
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Say Y or M if you want to add support for SPDIF input driver for
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Imagination Technologies SPDIF input device.
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@ -1,3 +1,4 @@
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obj-$(CONFIG_SND_SOC_IMG_I2S_IN) += img-i2s-in.o
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obj-$(CONFIG_SND_SOC_IMG_I2S_OUT) += img-i2s-out.o
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obj-$(CONFIG_SND_SOC_IMG_PARALLEL_OUT) += img-parallel-out.o
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obj-$(CONFIG_SND_SOC_IMG_SPDIF_IN) += img-spdif-in.o
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@ -0,0 +1,806 @@
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/*
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* IMG SPDIF input controller driver
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*
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* Copyright (C) 2015 Imagination Technologies Ltd.
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*
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* Author: Damien Horsley <Damien.Horsley@imgtec.com>
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms and conditions of the GNU General Public License,
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* version 2, as published by the Free Software Foundation.
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*/
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#include <linux/clk.h>
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#include <linux/init.h>
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#include <linux/kernel.h>
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#include <linux/module.h>
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#include <linux/of.h>
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#include <linux/platform_device.h>
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#include <linux/reset.h>
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#include <sound/core.h>
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#include <sound/dmaengine_pcm.h>
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#include <sound/initval.h>
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#include <sound/pcm.h>
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#include <sound/pcm_params.h>
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#include <sound/soc.h>
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#define IMG_SPDIF_IN_RX_FIFO_OFFSET 0
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#define IMG_SPDIF_IN_CTL 0x4
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#define IMG_SPDIF_IN_CTL_LOCKLO_MASK 0xff
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#define IMG_SPDIF_IN_CTL_LOCKLO_SHIFT 0
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#define IMG_SPDIF_IN_CTL_LOCKHI_MASK 0xff00
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#define IMG_SPDIF_IN_CTL_LOCKHI_SHIFT 8
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#define IMG_SPDIF_IN_CTL_TRK_MASK 0xff0000
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#define IMG_SPDIF_IN_CTL_TRK_SHIFT 16
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#define IMG_SPDIF_IN_CTL_SRD_MASK 0x70000000
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#define IMG_SPDIF_IN_CTL_SRD_SHIFT 28
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#define IMG_SPDIF_IN_CTL_SRT_MASK BIT(31)
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#define IMG_SPDIF_IN_STATUS 0x8
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#define IMG_SPDIF_IN_STATUS_SAM_MASK 0x7000
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#define IMG_SPDIF_IN_STATUS_SAM_SHIFT 12
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#define IMG_SPDIF_IN_STATUS_LOCK_MASK BIT(15)
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#define IMG_SPDIF_IN_STATUS_LOCK_SHIFT 15
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#define IMG_SPDIF_IN_CLKGEN 0x1c
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#define IMG_SPDIF_IN_CLKGEN_NOM_MASK 0x3ff
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#define IMG_SPDIF_IN_CLKGEN_NOM_SHIFT 0
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#define IMG_SPDIF_IN_CLKGEN_HLD_MASK 0x3ff0000
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#define IMG_SPDIF_IN_CLKGEN_HLD_SHIFT 16
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#define IMG_SPDIF_IN_CSL 0x20
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#define IMG_SPDIF_IN_CSH 0x24
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#define IMG_SPDIF_IN_CSH_MASK 0xff
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#define IMG_SPDIF_IN_CSH_SHIFT 0
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#define IMG_SPDIF_IN_SOFT_RESET 0x28
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#define IMG_SPDIF_IN_SOFT_RESET_MASK BIT(0)
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#define IMG_SPDIF_IN_ACLKGEN_START 0x2c
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#define IMG_SPDIF_IN_ACLKGEN_NOM_MASK 0x3ff
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#define IMG_SPDIF_IN_ACLKGEN_NOM_SHIFT 0
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#define IMG_SPDIF_IN_ACLKGEN_HLD_MASK 0xffc00
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#define IMG_SPDIF_IN_ACLKGEN_HLD_SHIFT 10
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#define IMG_SPDIF_IN_ACLKGEN_TRK_MASK 0xff00000
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#define IMG_SPDIF_IN_ACLKGEN_TRK_SHIFT 20
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#define IMG_SPDIF_IN_NUM_ACLKGEN 4
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struct img_spdif_in {
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spinlock_t lock;
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void __iomem *base;
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struct clk *clk_sys;
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struct snd_dmaengine_dai_dma_data dma_data;
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struct device *dev;
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unsigned int trk;
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bool multi_freq;
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int lock_acquire;
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int lock_release;
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unsigned int single_freq;
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unsigned int multi_freqs[IMG_SPDIF_IN_NUM_ACLKGEN];
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bool active;
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/* Write-only registers */
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unsigned int aclkgen_regs[IMG_SPDIF_IN_NUM_ACLKGEN];
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};
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static inline void img_spdif_in_writel(struct img_spdif_in *spdif,
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u32 val, u32 reg)
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{
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writel(val, spdif->base + reg);
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}
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static inline u32 img_spdif_in_readl(struct img_spdif_in *spdif, u32 reg)
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{
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return readl(spdif->base + reg);
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}
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static inline void img_spdif_in_aclkgen_writel(struct img_spdif_in *spdif,
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u32 index)
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{
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img_spdif_in_writel(spdif, spdif->aclkgen_regs[index],
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IMG_SPDIF_IN_ACLKGEN_START + (index * 0x4));
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}
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static int img_spdif_in_check_max_rate(struct img_spdif_in *spdif,
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unsigned int sample_rate, unsigned long *actual_freq)
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{
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unsigned long min_freq, freq_t;
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/* Clock rate must be at least 24x the bit rate */
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min_freq = sample_rate * 2 * 32 * 24;
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freq_t = clk_get_rate(spdif->clk_sys);
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if (freq_t < min_freq)
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return -EINVAL;
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*actual_freq = freq_t;
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return 0;
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}
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static int img_spdif_in_do_clkgen_calc(unsigned int rate, unsigned int *pnom,
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unsigned int *phld, unsigned long clk_rate)
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{
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unsigned int ori, nom, hld;
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/*
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* Calculate oversampling ratio, nominal phase increment and hold
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* increment for the given rate / frequency
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*/
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if (!rate)
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return -EINVAL;
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ori = clk_rate / (rate * 64);
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if (!ori)
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return -EINVAL;
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nom = (4096 / ori) + 1;
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do
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hld = 4096 - (--nom * (ori - 1));
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while (hld < 120);
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*pnom = nom;
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*phld = hld;
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return 0;
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}
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static int img_spdif_in_do_clkgen_single(struct img_spdif_in *spdif,
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unsigned int rate)
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{
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unsigned int nom, hld;
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unsigned long flags, clk_rate;
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int ret = 0;
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u32 reg;
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ret = img_spdif_in_check_max_rate(spdif, rate, &clk_rate);
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if (ret)
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return ret;
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ret = img_spdif_in_do_clkgen_calc(rate, &nom, &hld, clk_rate);
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if (ret)
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return ret;
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reg = (nom << IMG_SPDIF_IN_CLKGEN_NOM_SHIFT) &
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IMG_SPDIF_IN_CLKGEN_NOM_MASK;
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reg |= (hld << IMG_SPDIF_IN_CLKGEN_HLD_SHIFT) &
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IMG_SPDIF_IN_CLKGEN_HLD_MASK;
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spin_lock_irqsave(&spdif->lock, flags);
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if (spdif->active) {
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spin_unlock_irqrestore(&spdif->lock, flags);
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return -EBUSY;
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}
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img_spdif_in_writel(spdif, reg, IMG_SPDIF_IN_CLKGEN);
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spdif->single_freq = rate;
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spin_unlock_irqrestore(&spdif->lock, flags);
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return 0;
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}
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static int img_spdif_in_do_clkgen_multi(struct img_spdif_in *spdif,
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unsigned int multi_freqs[])
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{
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unsigned int nom, hld, rate, max_rate = 0;
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unsigned long flags, clk_rate;
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int i, ret = 0;
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u32 reg, trk_reg, temp_regs[IMG_SPDIF_IN_NUM_ACLKGEN];
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for (i = 0; i < IMG_SPDIF_IN_NUM_ACLKGEN; i++)
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if (multi_freqs[i] > max_rate)
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max_rate = multi_freqs[i];
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ret = img_spdif_in_check_max_rate(spdif, max_rate, &clk_rate);
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if (ret)
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return ret;
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for (i = 0; i < IMG_SPDIF_IN_NUM_ACLKGEN; i++) {
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rate = multi_freqs[i];
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ret = img_spdif_in_do_clkgen_calc(rate, &nom, &hld, clk_rate);
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if (ret)
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return ret;
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reg = (nom << IMG_SPDIF_IN_ACLKGEN_NOM_SHIFT) &
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IMG_SPDIF_IN_ACLKGEN_NOM_MASK;
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reg |= (hld << IMG_SPDIF_IN_ACLKGEN_HLD_SHIFT) &
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IMG_SPDIF_IN_ACLKGEN_HLD_MASK;
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temp_regs[i] = reg;
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}
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spin_lock_irqsave(&spdif->lock, flags);
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if (spdif->active) {
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spin_unlock_irqrestore(&spdif->lock, flags);
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return -EBUSY;
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}
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trk_reg = spdif->trk << IMG_SPDIF_IN_ACLKGEN_TRK_SHIFT;
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for (i = 0; i < IMG_SPDIF_IN_NUM_ACLKGEN; i++) {
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spdif->aclkgen_regs[i] = temp_regs[i] | trk_reg;
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img_spdif_in_aclkgen_writel(spdif, i);
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}
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spdif->multi_freq = true;
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spdif->multi_freqs[0] = multi_freqs[0];
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spdif->multi_freqs[1] = multi_freqs[1];
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spdif->multi_freqs[2] = multi_freqs[2];
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spdif->multi_freqs[3] = multi_freqs[3];
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spin_unlock_irqrestore(&spdif->lock, flags);
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return 0;
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}
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static int img_spdif_in_iec958_info(struct snd_kcontrol *kcontrol,
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struct snd_ctl_elem_info *uinfo)
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{
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uinfo->type = SNDRV_CTL_ELEM_TYPE_IEC958;
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uinfo->count = 1;
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return 0;
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}
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static int img_spdif_in_get_status_mask(struct snd_kcontrol *kcontrol,
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struct snd_ctl_elem_value *ucontrol)
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{
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ucontrol->value.iec958.status[0] = 0xff;
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ucontrol->value.iec958.status[1] = 0xff;
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ucontrol->value.iec958.status[2] = 0xff;
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ucontrol->value.iec958.status[3] = 0xff;
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ucontrol->value.iec958.status[4] = 0xff;
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return 0;
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}
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static int img_spdif_in_get_status(struct snd_kcontrol *kcontrol,
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struct snd_ctl_elem_value *ucontrol)
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{
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struct snd_soc_dai *cpu_dai = snd_kcontrol_chip(kcontrol);
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struct img_spdif_in *spdif = snd_soc_dai_get_drvdata(cpu_dai);
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u32 reg;
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reg = img_spdif_in_readl(spdif, IMG_SPDIF_IN_CSL);
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ucontrol->value.iec958.status[0] = reg & 0xff;
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ucontrol->value.iec958.status[1] = (reg >> 8) & 0xff;
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ucontrol->value.iec958.status[2] = (reg >> 16) & 0xff;
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ucontrol->value.iec958.status[3] = (reg >> 24) & 0xff;
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reg = img_spdif_in_readl(spdif, IMG_SPDIF_IN_CSH);
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ucontrol->value.iec958.status[4] = (reg & IMG_SPDIF_IN_CSH_MASK)
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>> IMG_SPDIF_IN_CSH_SHIFT;
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return 0;
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}
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static int img_spdif_in_info_multi_freq(struct snd_kcontrol *kcontrol,
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struct snd_ctl_elem_info *uinfo)
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{
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uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
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uinfo->count = IMG_SPDIF_IN_NUM_ACLKGEN;
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uinfo->value.integer.min = 0;
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uinfo->value.integer.max = LONG_MAX;
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return 0;
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}
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static int img_spdif_in_get_multi_freq(struct snd_kcontrol *kcontrol,
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struct snd_ctl_elem_value *ucontrol)
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{
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struct snd_soc_dai *cpu_dai = snd_kcontrol_chip(kcontrol);
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struct img_spdif_in *spdif = snd_soc_dai_get_drvdata(cpu_dai);
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unsigned long flags;
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spin_lock_irqsave(&spdif->lock, flags);
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if (spdif->multi_freq) {
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ucontrol->value.integer.value[0] = spdif->multi_freqs[0];
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ucontrol->value.integer.value[1] = spdif->multi_freqs[1];
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ucontrol->value.integer.value[2] = spdif->multi_freqs[2];
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ucontrol->value.integer.value[3] = spdif->multi_freqs[3];
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} else {
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ucontrol->value.integer.value[0] = 0;
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ucontrol->value.integer.value[1] = 0;
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ucontrol->value.integer.value[2] = 0;
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ucontrol->value.integer.value[3] = 0;
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}
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spin_unlock_irqrestore(&spdif->lock, flags);
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return 0;
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}
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static int img_spdif_in_set_multi_freq(struct snd_kcontrol *kcontrol,
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struct snd_ctl_elem_value *ucontrol)
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{
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struct snd_soc_dai *cpu_dai = snd_kcontrol_chip(kcontrol);
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struct img_spdif_in *spdif = snd_soc_dai_get_drvdata(cpu_dai);
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unsigned int multi_freqs[IMG_SPDIF_IN_NUM_ACLKGEN];
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bool multi_freq;
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unsigned long flags;
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if ((ucontrol->value.integer.value[0] == 0) &&
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(ucontrol->value.integer.value[1] == 0) &&
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(ucontrol->value.integer.value[2] == 0) &&
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(ucontrol->value.integer.value[3] == 0)) {
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multi_freq = false;
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} else {
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multi_freqs[0] = ucontrol->value.integer.value[0];
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multi_freqs[1] = ucontrol->value.integer.value[1];
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multi_freqs[2] = ucontrol->value.integer.value[2];
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multi_freqs[3] = ucontrol->value.integer.value[3];
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multi_freq = true;
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}
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if (multi_freq)
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return img_spdif_in_do_clkgen_multi(spdif, multi_freqs);
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spin_lock_irqsave(&spdif->lock, flags);
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if (spdif->active) {
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spin_unlock_irqrestore(&spdif->lock, flags);
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return -EBUSY;
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}
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spdif->multi_freq = false;
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spin_unlock_irqrestore(&spdif->lock, flags);
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return 0;
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}
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static int img_spdif_in_info_lock_freq(struct snd_kcontrol *kcontrol,
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struct snd_ctl_elem_info *uinfo)
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{
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uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
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uinfo->count = 1;
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uinfo->value.integer.min = 0;
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uinfo->value.integer.max = LONG_MAX;
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return 0;
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}
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static int img_spdif_in_get_lock_freq(struct snd_kcontrol *kcontrol,
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struct snd_ctl_elem_value *uc)
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{
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struct snd_soc_dai *cpu_dai = snd_kcontrol_chip(kcontrol);
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struct img_spdif_in *spdif = snd_soc_dai_get_drvdata(cpu_dai);
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u32 reg;
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int i;
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unsigned long flags;
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spin_lock_irqsave(&spdif->lock, flags);
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reg = img_spdif_in_readl(spdif, IMG_SPDIF_IN_STATUS);
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if (reg & IMG_SPDIF_IN_STATUS_LOCK_MASK) {
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if (spdif->multi_freq) {
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i = ((reg & IMG_SPDIF_IN_STATUS_SAM_MASK) >>
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IMG_SPDIF_IN_STATUS_SAM_SHIFT) - 1;
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uc->value.integer.value[0] = spdif->multi_freqs[i];
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} else {
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uc->value.integer.value[0] = spdif->single_freq;
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}
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} else {
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uc->value.integer.value[0] = 0;
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}
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spin_unlock_irqrestore(&spdif->lock, flags);
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return 0;
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}
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static int img_spdif_in_info_trk(struct snd_kcontrol *kcontrol,
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struct snd_ctl_elem_info *uinfo)
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{
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uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
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uinfo->count = 1;
|
||||
uinfo->value.integer.min = 0;
|
||||
uinfo->value.integer.max = 255;
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int img_spdif_in_get_trk(struct snd_kcontrol *kcontrol,
|
||||
struct snd_ctl_elem_value *ucontrol)
|
||||
{
|
||||
struct snd_soc_dai *cpu_dai = snd_kcontrol_chip(kcontrol);
|
||||
struct img_spdif_in *spdif = snd_soc_dai_get_drvdata(cpu_dai);
|
||||
|
||||
ucontrol->value.integer.value[0] = spdif->trk;
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int img_spdif_in_set_trk(struct snd_kcontrol *kcontrol,
|
||||
struct snd_ctl_elem_value *ucontrol)
|
||||
{
|
||||
struct snd_soc_dai *cpu_dai = snd_kcontrol_chip(kcontrol);
|
||||
struct img_spdif_in *spdif = snd_soc_dai_get_drvdata(cpu_dai);
|
||||
unsigned long flags;
|
||||
int i;
|
||||
u32 reg;
|
||||
|
||||
spin_lock_irqsave(&spdif->lock, flags);
|
||||
|
||||
if (spdif->active) {
|
||||
spin_unlock_irqrestore(&spdif->lock, flags);
|
||||
return -EBUSY;
|
||||
}
|
||||
|
||||
spdif->trk = ucontrol->value.integer.value[0];
|
||||
|
||||
reg = img_spdif_in_readl(spdif, IMG_SPDIF_IN_CTL);
|
||||
reg &= ~IMG_SPDIF_IN_CTL_TRK_MASK;
|
||||
reg |= spdif->trk << IMG_SPDIF_IN_CTL_TRK_SHIFT;
|
||||
img_spdif_in_writel(spdif, reg, IMG_SPDIF_IN_CTL);
|
||||
|
||||
for (i = 0; i < IMG_SPDIF_IN_NUM_ACLKGEN; i++) {
|
||||
spdif->aclkgen_regs[i] = (spdif->aclkgen_regs[i] &
|
||||
~IMG_SPDIF_IN_ACLKGEN_TRK_MASK) |
|
||||
(spdif->trk << IMG_SPDIF_IN_ACLKGEN_TRK_SHIFT);
|
||||
|
||||
img_spdif_in_aclkgen_writel(spdif, i);
|
||||
}
|
||||
|
||||
spin_unlock_irqrestore(&spdif->lock, flags);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int img_spdif_in_info_lock(struct snd_kcontrol *kcontrol,
|
||||
struct snd_ctl_elem_info *uinfo)
|
||||
{
|
||||
uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
|
||||
uinfo->count = 1;
|
||||
uinfo->value.integer.min = -128;
|
||||
uinfo->value.integer.max = 127;
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int img_spdif_in_get_lock_acquire(struct snd_kcontrol *kcontrol,
|
||||
struct snd_ctl_elem_value *ucontrol)
|
||||
{
|
||||
struct snd_soc_dai *cpu_dai = snd_kcontrol_chip(kcontrol);
|
||||
struct img_spdif_in *spdif = snd_soc_dai_get_drvdata(cpu_dai);
|
||||
|
||||
ucontrol->value.integer.value[0] = spdif->lock_acquire;
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int img_spdif_in_set_lock_acquire(struct snd_kcontrol *kcontrol,
|
||||
struct snd_ctl_elem_value *ucontrol)
|
||||
{
|
||||
struct snd_soc_dai *cpu_dai = snd_kcontrol_chip(kcontrol);
|
||||
struct img_spdif_in *spdif = snd_soc_dai_get_drvdata(cpu_dai);
|
||||
unsigned long flags;
|
||||
u32 reg;
|
||||
|
||||
spin_lock_irqsave(&spdif->lock, flags);
|
||||
|
||||
if (spdif->active) {
|
||||
spin_unlock_irqrestore(&spdif->lock, flags);
|
||||
return -EBUSY;
|
||||
}
|
||||
|
||||
spdif->lock_acquire = ucontrol->value.integer.value[0];
|
||||
|
||||
reg = img_spdif_in_readl(spdif, IMG_SPDIF_IN_CTL);
|
||||
reg &= ~IMG_SPDIF_IN_CTL_LOCKHI_MASK;
|
||||
reg |= (spdif->lock_acquire << IMG_SPDIF_IN_CTL_LOCKHI_SHIFT) &
|
||||
IMG_SPDIF_IN_CTL_LOCKHI_MASK;
|
||||
img_spdif_in_writel(spdif, reg, IMG_SPDIF_IN_CTL);
|
||||
|
||||
spin_unlock_irqrestore(&spdif->lock, flags);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int img_spdif_in_get_lock_release(struct snd_kcontrol *kcontrol,
|
||||
struct snd_ctl_elem_value *ucontrol)
|
||||
{
|
||||
struct snd_soc_dai *cpu_dai = snd_kcontrol_chip(kcontrol);
|
||||
struct img_spdif_in *spdif = snd_soc_dai_get_drvdata(cpu_dai);
|
||||
|
||||
ucontrol->value.integer.value[0] = spdif->lock_release;
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int img_spdif_in_set_lock_release(struct snd_kcontrol *kcontrol,
|
||||
struct snd_ctl_elem_value *ucontrol)
|
||||
{
|
||||
struct snd_soc_dai *cpu_dai = snd_kcontrol_chip(kcontrol);
|
||||
struct img_spdif_in *spdif = snd_soc_dai_get_drvdata(cpu_dai);
|
||||
unsigned long flags;
|
||||
u32 reg;
|
||||
|
||||
spin_lock_irqsave(&spdif->lock, flags);
|
||||
|
||||
if (spdif->active) {
|
||||
spin_unlock_irqrestore(&spdif->lock, flags);
|
||||
return -EBUSY;
|
||||
}
|
||||
|
||||
spdif->lock_release = ucontrol->value.integer.value[0];
|
||||
|
||||
reg = img_spdif_in_readl(spdif, IMG_SPDIF_IN_CTL);
|
||||
reg &= ~IMG_SPDIF_IN_CTL_LOCKLO_MASK;
|
||||
reg |= (spdif->lock_release << IMG_SPDIF_IN_CTL_LOCKLO_SHIFT) &
|
||||
IMG_SPDIF_IN_CTL_LOCKLO_MASK;
|
||||
img_spdif_in_writel(spdif, reg, IMG_SPDIF_IN_CTL);
|
||||
|
||||
spin_unlock_irqrestore(&spdif->lock, flags);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static struct snd_kcontrol_new img_spdif_in_controls[] = {
|
||||
{
|
||||
.access = SNDRV_CTL_ELEM_ACCESS_READ,
|
||||
.iface = SNDRV_CTL_ELEM_IFACE_PCM,
|
||||
.name = SNDRV_CTL_NAME_IEC958("", CAPTURE, MASK),
|
||||
.info = img_spdif_in_iec958_info,
|
||||
.get = img_spdif_in_get_status_mask
|
||||
},
|
||||
{
|
||||
.access = SNDRV_CTL_ELEM_ACCESS_READ |
|
||||
SNDRV_CTL_ELEM_ACCESS_VOLATILE,
|
||||
.iface = SNDRV_CTL_ELEM_IFACE_PCM,
|
||||
.name = SNDRV_CTL_NAME_IEC958("", CAPTURE, DEFAULT),
|
||||
.info = img_spdif_in_iec958_info,
|
||||
.get = img_spdif_in_get_status
|
||||
},
|
||||
{
|
||||
.iface = SNDRV_CTL_ELEM_IFACE_PCM,
|
||||
.name = "SPDIF In Multi Frequency Acquire",
|
||||
.info = img_spdif_in_info_multi_freq,
|
||||
.get = img_spdif_in_get_multi_freq,
|
||||
.put = img_spdif_in_set_multi_freq
|
||||
},
|
||||
{
|
||||
.access = SNDRV_CTL_ELEM_ACCESS_READ |
|
||||
SNDRV_CTL_ELEM_ACCESS_VOLATILE,
|
||||
.iface = SNDRV_CTL_ELEM_IFACE_PCM,
|
||||
.name = "SPDIF In Lock Frequency",
|
||||
.info = img_spdif_in_info_lock_freq,
|
||||
.get = img_spdif_in_get_lock_freq
|
||||
},
|
||||
{
|
||||
.iface = SNDRV_CTL_ELEM_IFACE_PCM,
|
||||
.name = "SPDIF In Lock TRK",
|
||||
.info = img_spdif_in_info_trk,
|
||||
.get = img_spdif_in_get_trk,
|
||||
.put = img_spdif_in_set_trk
|
||||
},
|
||||
{
|
||||
.iface = SNDRV_CTL_ELEM_IFACE_PCM,
|
||||
.name = "SPDIF In Lock Acquire Threshold",
|
||||
.info = img_spdif_in_info_lock,
|
||||
.get = img_spdif_in_get_lock_acquire,
|
||||
.put = img_spdif_in_set_lock_acquire
|
||||
},
|
||||
{
|
||||
.iface = SNDRV_CTL_ELEM_IFACE_PCM,
|
||||
.name = "SPDIF In Lock Release Threshold",
|
||||
.info = img_spdif_in_info_lock,
|
||||
.get = img_spdif_in_get_lock_release,
|
||||
.put = img_spdif_in_set_lock_release
|
||||
}
|
||||
};
|
||||
|
||||
static int img_spdif_in_trigger(struct snd_pcm_substream *substream, int cmd,
|
||||
struct snd_soc_dai *dai)
|
||||
{
|
||||
unsigned long flags;
|
||||
struct img_spdif_in *spdif = snd_soc_dai_get_drvdata(dai);
|
||||
int ret = 0;
|
||||
u32 reg;
|
||||
|
||||
spin_lock_irqsave(&spdif->lock, flags);
|
||||
|
||||
switch (cmd) {
|
||||
case SNDRV_PCM_TRIGGER_START:
|
||||
case SNDRV_PCM_TRIGGER_RESUME:
|
||||
case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
|
||||
reg = img_spdif_in_readl(spdif, IMG_SPDIF_IN_CTL);
|
||||
if (spdif->multi_freq)
|
||||
reg &= ~IMG_SPDIF_IN_CTL_SRD_MASK;
|
||||
else
|
||||
reg |= (1UL << IMG_SPDIF_IN_CTL_SRD_SHIFT);
|
||||
reg |= IMG_SPDIF_IN_CTL_SRT_MASK;
|
||||
img_spdif_in_writel(spdif, reg, IMG_SPDIF_IN_CTL);
|
||||
spdif->active = true;
|
||||
break;
|
||||
case SNDRV_PCM_TRIGGER_STOP:
|
||||
case SNDRV_PCM_TRIGGER_SUSPEND:
|
||||
case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
|
||||
reg = img_spdif_in_readl(spdif, IMG_SPDIF_IN_CTL);
|
||||
reg &= ~IMG_SPDIF_IN_CTL_SRT_MASK;
|
||||
img_spdif_in_writel(spdif, reg, IMG_SPDIF_IN_CTL);
|
||||
spdif->active = false;
|
||||
break;
|
||||
default:
|
||||
ret = -EINVAL;
|
||||
}
|
||||
|
||||
spin_unlock_irqrestore(&spdif->lock, flags);
|
||||
|
||||
return ret;
|
||||
}
|
||||
|
||||
static int img_spdif_in_hw_params(struct snd_pcm_substream *substream,
|
||||
struct snd_pcm_hw_params *params, struct snd_soc_dai *dai)
|
||||
{
|
||||
struct img_spdif_in *spdif = snd_soc_dai_get_drvdata(dai);
|
||||
unsigned int rate, channels;
|
||||
snd_pcm_format_t format;
|
||||
|
||||
rate = params_rate(params);
|
||||
channels = params_channels(params);
|
||||
format = params_format(params);
|
||||
|
||||
if (format != SNDRV_PCM_FORMAT_S32_LE)
|
||||
return -EINVAL;
|
||||
|
||||
if (channels != 2)
|
||||
return -EINVAL;
|
||||
|
||||
return img_spdif_in_do_clkgen_single(spdif, rate);
|
||||
}
|
||||
|
||||
static const struct snd_soc_dai_ops img_spdif_in_dai_ops = {
|
||||
.trigger = img_spdif_in_trigger,
|
||||
.hw_params = img_spdif_in_hw_params
|
||||
};
|
||||
|
||||
static int img_spdif_in_dai_probe(struct snd_soc_dai *dai)
|
||||
{
|
||||
struct img_spdif_in *spdif = snd_soc_dai_get_drvdata(dai);
|
||||
|
||||
snd_soc_dai_init_dma_data(dai, NULL, &spdif->dma_data);
|
||||
|
||||
snd_soc_add_dai_controls(dai, img_spdif_in_controls,
|
||||
ARRAY_SIZE(img_spdif_in_controls));
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static struct snd_soc_dai_driver img_spdif_in_dai = {
|
||||
.probe = img_spdif_in_dai_probe,
|
||||
.capture = {
|
||||
.channels_min = 2,
|
||||
.channels_max = 2,
|
||||
.rates = SNDRV_PCM_RATE_8000_192000,
|
||||
.formats = SNDRV_PCM_FMTBIT_S32_LE
|
||||
},
|
||||
.ops = &img_spdif_in_dai_ops
|
||||
};
|
||||
|
||||
static const struct snd_soc_component_driver img_spdif_in_component = {
|
||||
.name = "img-spdif-in"
|
||||
};
|
||||
|
||||
static int img_spdif_in_probe(struct platform_device *pdev)
|
||||
{
|
||||
struct img_spdif_in *spdif;
|
||||
struct resource *res;
|
||||
void __iomem *base;
|
||||
int ret;
|
||||
struct reset_control *rst;
|
||||
u32 reg;
|
||||
struct device *dev = &pdev->dev;
|
||||
|
||||
spdif = devm_kzalloc(&pdev->dev, sizeof(*spdif), GFP_KERNEL);
|
||||
if (!spdif)
|
||||
return -ENOMEM;
|
||||
|
||||
platform_set_drvdata(pdev, spdif);
|
||||
|
||||
spdif->dev = &pdev->dev;
|
||||
|
||||
res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
|
||||
base = devm_ioremap_resource(&pdev->dev, res);
|
||||
if (IS_ERR(base))
|
||||
return PTR_ERR(base);
|
||||
|
||||
spdif->base = base;
|
||||
|
||||
spdif->clk_sys = devm_clk_get(dev, "sys");
|
||||
if (IS_ERR(spdif->clk_sys)) {
|
||||
if (PTR_ERR(spdif->clk_sys) != -EPROBE_DEFER)
|
||||
dev_err(dev, "Failed to acquire clock 'sys'\n");
|
||||
return PTR_ERR(spdif->clk_sys);
|
||||
}
|
||||
|
||||
ret = clk_prepare_enable(spdif->clk_sys);
|
||||
if (ret)
|
||||
return ret;
|
||||
|
||||
rst = devm_reset_control_get(&pdev->dev, "rst");
|
||||
if (IS_ERR(rst)) {
|
||||
if (PTR_ERR(rst) == -EPROBE_DEFER) {
|
||||
ret = -EPROBE_DEFER;
|
||||
goto err_clk_disable;
|
||||
}
|
||||
dev_dbg(dev, "No top level reset found\n");
|
||||
img_spdif_in_writel(spdif, IMG_SPDIF_IN_SOFT_RESET_MASK,
|
||||
IMG_SPDIF_IN_SOFT_RESET);
|
||||
img_spdif_in_writel(spdif, 0, IMG_SPDIF_IN_SOFT_RESET);
|
||||
} else {
|
||||
reset_control_assert(rst);
|
||||
reset_control_deassert(rst);
|
||||
}
|
||||
|
||||
spin_lock_init(&spdif->lock);
|
||||
|
||||
spdif->dma_data.addr = res->start + IMG_SPDIF_IN_RX_FIFO_OFFSET;
|
||||
spdif->dma_data.addr_width = 4;
|
||||
spdif->dma_data.maxburst = 4;
|
||||
spdif->trk = 0x80;
|
||||
spdif->lock_acquire = 4;
|
||||
spdif->lock_release = -128;
|
||||
|
||||
reg = (spdif->lock_acquire << IMG_SPDIF_IN_CTL_LOCKHI_SHIFT) &
|
||||
IMG_SPDIF_IN_CTL_LOCKHI_MASK;
|
||||
reg |= (spdif->lock_release << IMG_SPDIF_IN_CTL_LOCKLO_SHIFT) &
|
||||
IMG_SPDIF_IN_CTL_LOCKLO_MASK;
|
||||
reg |= (spdif->trk << IMG_SPDIF_IN_CTL_TRK_SHIFT) &
|
||||
IMG_SPDIF_IN_CTL_TRK_MASK;
|
||||
img_spdif_in_writel(spdif, reg, IMG_SPDIF_IN_CTL);
|
||||
|
||||
ret = devm_snd_soc_register_component(&pdev->dev,
|
||||
&img_spdif_in_component, &img_spdif_in_dai, 1);
|
||||
if (ret)
|
||||
goto err_clk_disable;
|
||||
|
||||
ret = devm_snd_dmaengine_pcm_register(&pdev->dev, NULL, 0);
|
||||
if (ret)
|
||||
goto err_clk_disable;
|
||||
|
||||
return 0;
|
||||
|
||||
err_clk_disable:
|
||||
clk_disable_unprepare(spdif->clk_sys);
|
||||
|
||||
return ret;
|
||||
}
|
||||
|
||||
static int img_spdif_in_dev_remove(struct platform_device *pdev)
|
||||
{
|
||||
struct img_spdif_in *spdif = platform_get_drvdata(pdev);
|
||||
|
||||
clk_disable_unprepare(spdif->clk_sys);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static const struct of_device_id img_spdif_in_of_match[] = {
|
||||
{ .compatible = "img,spdif-in" },
|
||||
{}
|
||||
};
|
||||
MODULE_DEVICE_TABLE(of, img_spdif_in_of_match);
|
||||
|
||||
static struct platform_driver img_spdif_in_driver = {
|
||||
.driver = {
|
||||
.name = "img-spdif-in",
|
||||
.of_match_table = img_spdif_in_of_match
|
||||
},
|
||||
.probe = img_spdif_in_probe,
|
||||
.remove = img_spdif_in_dev_remove
|
||||
};
|
||||
module_platform_driver(img_spdif_in_driver);
|
||||
|
||||
MODULE_AUTHOR("Damien Horsley <Damien.Horsley@imgtec.com>");
|
||||
MODULE_DESCRIPTION("IMG SPDIF Input driver");
|
||||
MODULE_LICENSE("GPL v2");
|
||||
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