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0664678a84
PXA2xx/3xx SSP ports start from 1, not 0. Thus, the probe function requested the wrong SSP port. Correcting this unveiled another bug where ssp_init tries to request the already-requested SSP port again. So this patch replaces the ssp_init/exit calls with their internals from mach-pxa/ssp.c, leaving out the redundant ssp_request and the unneeded IRQ request. Effectively, that leaves us with not much more than enabling/disabling the SSP clock. Signed-off-by: Philipp Zabel <philipp.zabel@gmail.com> Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
934 lines
22 KiB
C
934 lines
22 KiB
C
#define DEBUG
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/*
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* pxa-ssp.c -- ALSA Soc Audio Layer
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*
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* Copyright 2005,2008 Wolfson Microelectronics PLC.
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* Author: Liam Girdwood
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* Mark Brown <broonie@opensource.wolfsonmicro.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 of the GNU General Public License as published by the
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* Free Software Foundation; either version 2 of the License, or (at your
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* option) any later version.
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*
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* TODO:
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* o Test network mode for > 16bit sample size
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*/
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#include <linux/init.h>
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#include <linux/module.h>
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#include <linux/platform_device.h>
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#include <linux/clk.h>
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#include <linux/io.h>
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#include <asm/irq.h>
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#include <sound/core.h>
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#include <sound/pcm.h>
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#include <sound/initval.h>
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#include <sound/pcm_params.h>
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#include <sound/soc.h>
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#include <sound/pxa2xx-lib.h>
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#include <mach/hardware.h>
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#include <mach/pxa-regs.h>
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#include <mach/regs-ssp.h>
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#include <mach/audio.h>
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#include <mach/ssp.h>
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#include "pxa2xx-pcm.h"
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#include "pxa-ssp.h"
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/*
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* SSP audio private data
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*/
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struct ssp_priv {
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struct ssp_dev dev;
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unsigned int sysclk;
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int dai_fmt;
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#ifdef CONFIG_PM
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struct ssp_state state;
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#endif
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};
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#define PXA2xx_SSP1_BASE 0x41000000
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#define PXA27x_SSP2_BASE 0x41700000
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#define PXA27x_SSP3_BASE 0x41900000
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#define PXA3xx_SSP4_BASE 0x41a00000
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static struct pxa2xx_pcm_dma_params pxa_ssp1_pcm_mono_out = {
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.name = "SSP1 PCM Mono out",
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.dev_addr = PXA2xx_SSP1_BASE + SSDR,
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.drcmr = &DRCMR(14),
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.dcmd = DCMD_INCSRCADDR | DCMD_FLOWTRG |
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DCMD_BURST16 | DCMD_WIDTH2,
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};
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static struct pxa2xx_pcm_dma_params pxa_ssp1_pcm_mono_in = {
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.name = "SSP1 PCM Mono in",
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.dev_addr = PXA2xx_SSP1_BASE + SSDR,
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.drcmr = &DRCMR(13),
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.dcmd = DCMD_INCTRGADDR | DCMD_FLOWSRC |
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DCMD_BURST16 | DCMD_WIDTH2,
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};
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static struct pxa2xx_pcm_dma_params pxa_ssp1_pcm_stereo_out = {
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.name = "SSP1 PCM Stereo out",
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.dev_addr = PXA2xx_SSP1_BASE + SSDR,
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.drcmr = &DRCMR(14),
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.dcmd = DCMD_INCSRCADDR | DCMD_FLOWTRG |
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DCMD_BURST16 | DCMD_WIDTH4,
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};
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static struct pxa2xx_pcm_dma_params pxa_ssp1_pcm_stereo_in = {
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.name = "SSP1 PCM Stereo in",
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.dev_addr = PXA2xx_SSP1_BASE + SSDR,
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.drcmr = &DRCMR(13),
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.dcmd = DCMD_INCTRGADDR | DCMD_FLOWSRC |
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DCMD_BURST16 | DCMD_WIDTH4,
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};
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static struct pxa2xx_pcm_dma_params pxa_ssp2_pcm_mono_out = {
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.name = "SSP2 PCM Mono out",
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.dev_addr = PXA27x_SSP2_BASE + SSDR,
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.drcmr = &DRCMR(16),
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.dcmd = DCMD_INCSRCADDR | DCMD_FLOWTRG |
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DCMD_BURST16 | DCMD_WIDTH2,
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};
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static struct pxa2xx_pcm_dma_params pxa_ssp2_pcm_mono_in = {
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.name = "SSP2 PCM Mono in",
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.dev_addr = PXA27x_SSP2_BASE + SSDR,
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.drcmr = &DRCMR(15),
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.dcmd = DCMD_INCTRGADDR | DCMD_FLOWSRC |
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DCMD_BURST16 | DCMD_WIDTH2,
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};
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static struct pxa2xx_pcm_dma_params pxa_ssp2_pcm_stereo_out = {
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.name = "SSP2 PCM Stereo out",
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.dev_addr = PXA27x_SSP2_BASE + SSDR,
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.drcmr = &DRCMR(16),
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.dcmd = DCMD_INCSRCADDR | DCMD_FLOWTRG |
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DCMD_BURST16 | DCMD_WIDTH4,
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};
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static struct pxa2xx_pcm_dma_params pxa_ssp2_pcm_stereo_in = {
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.name = "SSP2 PCM Stereo in",
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.dev_addr = PXA27x_SSP2_BASE + SSDR,
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.drcmr = &DRCMR(15),
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.dcmd = DCMD_INCTRGADDR | DCMD_FLOWSRC |
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DCMD_BURST16 | DCMD_WIDTH4,
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};
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static struct pxa2xx_pcm_dma_params pxa_ssp3_pcm_mono_out = {
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.name = "SSP3 PCM Mono out",
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.dev_addr = PXA27x_SSP3_BASE + SSDR,
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.drcmr = &DRCMR(67),
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.dcmd = DCMD_INCSRCADDR | DCMD_FLOWTRG |
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DCMD_BURST16 | DCMD_WIDTH2,
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};
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static struct pxa2xx_pcm_dma_params pxa_ssp3_pcm_mono_in = {
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.name = "SSP3 PCM Mono in",
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.dev_addr = PXA27x_SSP3_BASE + SSDR,
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.drcmr = &DRCMR(66),
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.dcmd = DCMD_INCTRGADDR | DCMD_FLOWSRC |
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DCMD_BURST16 | DCMD_WIDTH2,
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};
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static struct pxa2xx_pcm_dma_params pxa_ssp3_pcm_stereo_out = {
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.name = "SSP3 PCM Stereo out",
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.dev_addr = PXA27x_SSP3_BASE + SSDR,
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.drcmr = &DRCMR(67),
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.dcmd = DCMD_INCSRCADDR | DCMD_FLOWTRG |
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DCMD_BURST16 | DCMD_WIDTH4,
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};
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static struct pxa2xx_pcm_dma_params pxa_ssp3_pcm_stereo_in = {
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.name = "SSP3 PCM Stereo in",
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.dev_addr = PXA27x_SSP3_BASE + SSDR,
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.drcmr = &DRCMR(66),
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.dcmd = DCMD_INCTRGADDR | DCMD_FLOWSRC |
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DCMD_BURST16 | DCMD_WIDTH4,
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};
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static struct pxa2xx_pcm_dma_params pxa_ssp4_pcm_mono_out = {
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.name = "SSP4 PCM Mono out",
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.dev_addr = PXA3xx_SSP4_BASE + SSDR,
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.drcmr = &DRCMR(67),
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.dcmd = DCMD_INCSRCADDR | DCMD_FLOWTRG |
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DCMD_BURST16 | DCMD_WIDTH2,
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};
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static struct pxa2xx_pcm_dma_params pxa_ssp4_pcm_mono_in = {
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.name = "SSP4 PCM Mono in",
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.dev_addr = PXA3xx_SSP4_BASE + SSDR,
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.drcmr = &DRCMR(66),
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.dcmd = DCMD_INCTRGADDR | DCMD_FLOWSRC |
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DCMD_BURST16 | DCMD_WIDTH2,
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};
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static struct pxa2xx_pcm_dma_params pxa_ssp4_pcm_stereo_out = {
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.name = "SSP4 PCM Stereo out",
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.dev_addr = PXA3xx_SSP4_BASE + SSDR,
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.drcmr = &DRCMR(67),
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.dcmd = DCMD_INCSRCADDR | DCMD_FLOWTRG |
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DCMD_BURST16 | DCMD_WIDTH4,
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};
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static struct pxa2xx_pcm_dma_params pxa_ssp4_pcm_stereo_in = {
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.name = "SSP4 PCM Stereo in",
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.dev_addr = PXA3xx_SSP4_BASE + SSDR,
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.drcmr = &DRCMR(66),
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.dcmd = DCMD_INCTRGADDR | DCMD_FLOWSRC |
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DCMD_BURST16 | DCMD_WIDTH4,
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};
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static void dump_registers(struct ssp_device *ssp)
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{
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dev_dbg(&ssp->pdev->dev, "SSCR0 0x%08x SSCR1 0x%08x SSTO 0x%08x\n",
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ssp_read_reg(ssp, SSCR0), ssp_read_reg(ssp, SSCR1),
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ssp_read_reg(ssp, SSTO));
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dev_dbg(&ssp->pdev->dev, "SSPSP 0x%08x SSSR 0x%08x SSACD 0x%08x\n",
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ssp_read_reg(ssp, SSPSP), ssp_read_reg(ssp, SSSR),
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ssp_read_reg(ssp, SSACD));
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}
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static struct pxa2xx_pcm_dma_params *ssp_dma_params[4][4] = {
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{
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&pxa_ssp1_pcm_mono_out, &pxa_ssp1_pcm_mono_in,
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&pxa_ssp1_pcm_stereo_out, &pxa_ssp1_pcm_stereo_in,
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},
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{
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&pxa_ssp2_pcm_mono_out, &pxa_ssp2_pcm_mono_in,
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&pxa_ssp2_pcm_stereo_out, &pxa_ssp2_pcm_stereo_in,
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},
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{
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&pxa_ssp3_pcm_mono_out, &pxa_ssp3_pcm_mono_in,
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&pxa_ssp3_pcm_stereo_out, &pxa_ssp3_pcm_stereo_in,
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},
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{
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&pxa_ssp4_pcm_mono_out, &pxa_ssp4_pcm_mono_in,
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&pxa_ssp4_pcm_stereo_out, &pxa_ssp4_pcm_stereo_in,
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},
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};
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static int pxa_ssp_startup(struct snd_pcm_substream *substream,
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struct snd_soc_dai *dai)
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{
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struct snd_soc_pcm_runtime *rtd = substream->private_data;
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struct snd_soc_dai *cpu_dai = rtd->dai->cpu_dai;
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struct ssp_priv *priv = cpu_dai->private_data;
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int ret = 0;
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if (!cpu_dai->active) {
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priv->dev.port = cpu_dai->id + 1;
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priv->dev.irq = NO_IRQ;
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clk_enable(priv->dev.ssp->clk);
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ssp_disable(&priv->dev);
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}
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return ret;
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}
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static void pxa_ssp_shutdown(struct snd_pcm_substream *substream,
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struct snd_soc_dai *dai)
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{
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struct snd_soc_pcm_runtime *rtd = substream->private_data;
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struct snd_soc_dai *cpu_dai = rtd->dai->cpu_dai;
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struct ssp_priv *priv = cpu_dai->private_data;
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if (!cpu_dai->active) {
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ssp_disable(&priv->dev);
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clk_disable(priv->dev.ssp->clk);
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}
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}
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#ifdef CONFIG_PM
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static int pxa_ssp_suspend(struct snd_soc_dai *cpu_dai)
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{
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struct ssp_priv *priv = cpu_dai->private_data;
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if (!cpu_dai->active)
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return 0;
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ssp_save_state(&priv->dev, &priv->state);
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clk_disable(priv->dev.ssp->clk);
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return 0;
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}
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static int pxa_ssp_resume(struct snd_soc_dai *cpu_dai)
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{
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struct ssp_priv *priv = cpu_dai->private_data;
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if (!cpu_dai->active)
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return 0;
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clk_enable(priv->dev.ssp->clk);
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ssp_restore_state(&priv->dev, &priv->state);
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ssp_enable(&priv->dev);
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return 0;
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}
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#else
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#define pxa_ssp_suspend NULL
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#define pxa_ssp_resume NULL
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#endif
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/**
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* ssp_set_clkdiv - set SSP clock divider
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* @div: serial clock rate divider
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*/
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static void ssp_set_scr(struct ssp_dev *dev, u32 div)
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{
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struct ssp_device *ssp = dev->ssp;
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u32 sscr0 = ssp_read_reg(dev->ssp, SSCR0) & ~SSCR0_SCR;
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ssp_write_reg(ssp, SSCR0, (sscr0 | SSCR0_SerClkDiv(div)));
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}
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/*
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* Set the SSP ports SYSCLK.
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*/
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static int pxa_ssp_set_dai_sysclk(struct snd_soc_dai *cpu_dai,
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int clk_id, unsigned int freq, int dir)
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{
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struct ssp_priv *priv = cpu_dai->private_data;
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struct ssp_device *ssp = priv->dev.ssp;
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int val;
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u32 sscr0 = ssp_read_reg(ssp, SSCR0) &
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~(SSCR0_ECS | SSCR0_NCS | SSCR0_MOD | SSCR0_ADC);
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dev_dbg(&ssp->pdev->dev,
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"pxa_ssp_set_dai_sysclk id: %d, clk_id %d, freq %d\n",
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cpu_dai->id, clk_id, freq);
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switch (clk_id) {
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case PXA_SSP_CLK_NET_PLL:
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sscr0 |= SSCR0_MOD;
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break;
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case PXA_SSP_CLK_PLL:
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/* Internal PLL is fixed */
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if (cpu_is_pxa25x())
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priv->sysclk = 1843200;
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else
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priv->sysclk = 13000000;
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break;
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case PXA_SSP_CLK_EXT:
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priv->sysclk = freq;
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sscr0 |= SSCR0_ECS;
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break;
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case PXA_SSP_CLK_NET:
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priv->sysclk = freq;
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sscr0 |= SSCR0_NCS | SSCR0_MOD;
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break;
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case PXA_SSP_CLK_AUDIO:
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priv->sysclk = 0;
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ssp_set_scr(&priv->dev, 1);
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sscr0 |= SSCR0_ADC;
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break;
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default:
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return -ENODEV;
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}
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/* The SSP clock must be disabled when changing SSP clock mode
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* on PXA2xx. On PXA3xx it must be enabled when doing so. */
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if (!cpu_is_pxa3xx())
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clk_disable(priv->dev.ssp->clk);
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val = ssp_read_reg(ssp, SSCR0) | sscr0;
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ssp_write_reg(ssp, SSCR0, val);
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if (!cpu_is_pxa3xx())
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clk_enable(priv->dev.ssp->clk);
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return 0;
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}
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/*
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* Set the SSP clock dividers.
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*/
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static int pxa_ssp_set_dai_clkdiv(struct snd_soc_dai *cpu_dai,
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int div_id, int div)
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{
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struct ssp_priv *priv = cpu_dai->private_data;
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struct ssp_device *ssp = priv->dev.ssp;
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int val;
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switch (div_id) {
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case PXA_SSP_AUDIO_DIV_ACDS:
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val = (ssp_read_reg(ssp, SSACD) & ~0x7) | SSACD_ACDS(div);
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ssp_write_reg(ssp, SSACD, val);
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break;
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case PXA_SSP_AUDIO_DIV_SCDB:
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val = ssp_read_reg(ssp, SSACD);
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val &= ~SSACD_SCDB;
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#if defined(CONFIG_PXA3xx)
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if (cpu_is_pxa3xx())
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val &= ~SSACD_SCDX8;
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#endif
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switch (div) {
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case PXA_SSP_CLK_SCDB_1:
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val |= SSACD_SCDB;
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break;
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case PXA_SSP_CLK_SCDB_4:
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break;
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#if defined(CONFIG_PXA3xx)
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case PXA_SSP_CLK_SCDB_8:
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if (cpu_is_pxa3xx())
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val |= SSACD_SCDX8;
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else
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return -EINVAL;
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break;
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#endif
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default:
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return -EINVAL;
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}
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ssp_write_reg(ssp, SSACD, val);
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break;
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case PXA_SSP_DIV_SCR:
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ssp_set_scr(&priv->dev, div);
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break;
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default:
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return -ENODEV;
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}
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return 0;
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}
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/*
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* Configure the PLL frequency pxa27x and (afaik - pxa320 only)
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*/
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static int pxa_ssp_set_dai_pll(struct snd_soc_dai *cpu_dai,
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int pll_id, unsigned int freq_in, unsigned int freq_out)
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{
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struct ssp_priv *priv = cpu_dai->private_data;
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struct ssp_device *ssp = priv->dev.ssp;
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u32 ssacd = ssp_read_reg(ssp, SSACD) & ~0x70;
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#if defined(CONFIG_PXA3xx)
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if (cpu_is_pxa3xx())
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ssp_write_reg(ssp, SSACDD, 0);
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#endif
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switch (freq_out) {
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case 5622000:
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break;
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case 11345000:
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ssacd |= (0x1 << 4);
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break;
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case 12235000:
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ssacd |= (0x2 << 4);
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break;
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case 14857000:
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ssacd |= (0x3 << 4);
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break;
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case 32842000:
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ssacd |= (0x4 << 4);
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break;
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case 48000000:
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ssacd |= (0x5 << 4);
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break;
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case 0:
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/* Disable */
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break;
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default:
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#ifdef CONFIG_PXA3xx
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/* PXA3xx has a clock ditherer which can be used to generate
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* a wider range of frequencies - calculate a value for it.
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*/
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if (cpu_is_pxa3xx()) {
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u32 val;
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u64 tmp = 19968;
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tmp *= 1000000;
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do_div(tmp, freq_out);
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val = tmp;
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|
|
val = (val << 16) | 64;;
|
|
ssp_write_reg(ssp, SSACDD, val);
|
|
|
|
ssacd |= (0x6 << 4);
|
|
|
|
dev_dbg(&ssp->pdev->dev,
|
|
"Using SSACDD %x to supply %dHz\n",
|
|
val, freq_out);
|
|
break;
|
|
}
|
|
#endif
|
|
|
|
return -EINVAL;
|
|
}
|
|
|
|
ssp_write_reg(ssp, SSACD, ssacd);
|
|
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* Set the active slots in TDM/Network mode
|
|
*/
|
|
static int pxa_ssp_set_dai_tdm_slot(struct snd_soc_dai *cpu_dai,
|
|
unsigned int mask, int slots)
|
|
{
|
|
struct ssp_priv *priv = cpu_dai->private_data;
|
|
struct ssp_device *ssp = priv->dev.ssp;
|
|
u32 sscr0;
|
|
|
|
sscr0 = ssp_read_reg(ssp, SSCR0) & ~SSCR0_SlotsPerFrm(7);
|
|
|
|
/* set number of active slots */
|
|
sscr0 |= SSCR0_SlotsPerFrm(slots);
|
|
ssp_write_reg(ssp, SSCR0, sscr0);
|
|
|
|
/* set active slot mask */
|
|
ssp_write_reg(ssp, SSTSA, mask);
|
|
ssp_write_reg(ssp, SSRSA, mask);
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* Tristate the SSP DAI lines
|
|
*/
|
|
static int pxa_ssp_set_dai_tristate(struct snd_soc_dai *cpu_dai,
|
|
int tristate)
|
|
{
|
|
struct ssp_priv *priv = cpu_dai->private_data;
|
|
struct ssp_device *ssp = priv->dev.ssp;
|
|
u32 sscr1;
|
|
|
|
sscr1 = ssp_read_reg(ssp, SSCR1);
|
|
if (tristate)
|
|
sscr1 &= ~SSCR1_TTE;
|
|
else
|
|
sscr1 |= SSCR1_TTE;
|
|
ssp_write_reg(ssp, SSCR1, sscr1);
|
|
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* Set up the SSP DAI format.
|
|
* The SSP Port must be inactive before calling this function as the
|
|
* physical interface format is changed.
|
|
*/
|
|
static int pxa_ssp_set_dai_fmt(struct snd_soc_dai *cpu_dai,
|
|
unsigned int fmt)
|
|
{
|
|
struct ssp_priv *priv = cpu_dai->private_data;
|
|
struct ssp_device *ssp = priv->dev.ssp;
|
|
u32 sscr0;
|
|
u32 sscr1;
|
|
u32 sspsp;
|
|
|
|
/* reset port settings */
|
|
sscr0 = ssp_read_reg(ssp, SSCR0) &
|
|
(SSCR0_ECS | SSCR0_NCS | SSCR0_MOD | SSCR0_ADC);
|
|
sscr1 = SSCR1_RxTresh(8) | SSCR1_TxTresh(7);
|
|
sspsp = 0;
|
|
|
|
switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
|
|
case SND_SOC_DAIFMT_CBM_CFM:
|
|
sscr1 |= SSCR1_SCLKDIR | SSCR1_SFRMDIR;
|
|
break;
|
|
case SND_SOC_DAIFMT_CBM_CFS:
|
|
sscr1 |= SSCR1_SCLKDIR;
|
|
break;
|
|
case SND_SOC_DAIFMT_CBS_CFS:
|
|
break;
|
|
default:
|
|
return -EINVAL;
|
|
}
|
|
|
|
ssp_write_reg(ssp, SSCR0, sscr0);
|
|
ssp_write_reg(ssp, SSCR1, sscr1);
|
|
ssp_write_reg(ssp, SSPSP, sspsp);
|
|
|
|
switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
|
|
case SND_SOC_DAIFMT_I2S:
|
|
sscr0 |= SSCR0_MOD | SSCR0_PSP;
|
|
sscr1 |= SSCR1_RWOT | SSCR1_TRAIL;
|
|
|
|
switch (fmt & SND_SOC_DAIFMT_INV_MASK) {
|
|
case SND_SOC_DAIFMT_NB_NF:
|
|
sspsp |= SSPSP_FSRT;
|
|
break;
|
|
case SND_SOC_DAIFMT_NB_IF:
|
|
sspsp |= SSPSP_SFRMP | SSPSP_FSRT;
|
|
break;
|
|
case SND_SOC_DAIFMT_IB_IF:
|
|
sspsp |= SSPSP_SFRMP;
|
|
break;
|
|
default:
|
|
return -EINVAL;
|
|
}
|
|
break;
|
|
|
|
case SND_SOC_DAIFMT_DSP_A:
|
|
sspsp |= SSPSP_FSRT;
|
|
case SND_SOC_DAIFMT_DSP_B:
|
|
sscr0 |= SSCR0_MOD | SSCR0_PSP;
|
|
sscr1 |= SSCR1_TRAIL | SSCR1_RWOT;
|
|
|
|
switch (fmt & SND_SOC_DAIFMT_INV_MASK) {
|
|
case SND_SOC_DAIFMT_NB_NF:
|
|
sspsp |= SSPSP_SFRMP;
|
|
break;
|
|
case SND_SOC_DAIFMT_IB_IF:
|
|
break;
|
|
default:
|
|
return -EINVAL;
|
|
}
|
|
break;
|
|
|
|
default:
|
|
return -EINVAL;
|
|
}
|
|
|
|
ssp_write_reg(ssp, SSCR0, sscr0);
|
|
ssp_write_reg(ssp, SSCR1, sscr1);
|
|
ssp_write_reg(ssp, SSPSP, sspsp);
|
|
|
|
dump_registers(ssp);
|
|
|
|
/* Since we are configuring the timings for the format by hand
|
|
* we have to defer some things until hw_params() where we
|
|
* know parameters like the sample size.
|
|
*/
|
|
priv->dai_fmt = fmt;
|
|
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* Set the SSP audio DMA parameters and sample size.
|
|
* Can be called multiple times by oss emulation.
|
|
*/
|
|
static int pxa_ssp_hw_params(struct snd_pcm_substream *substream,
|
|
struct snd_pcm_hw_params *params,
|
|
struct snd_soc_dai *dai)
|
|
{
|
|
struct snd_soc_pcm_runtime *rtd = substream->private_data;
|
|
struct snd_soc_dai *cpu_dai = rtd->dai->cpu_dai;
|
|
struct ssp_priv *priv = cpu_dai->private_data;
|
|
struct ssp_device *ssp = priv->dev.ssp;
|
|
int dma = 0, chn = params_channels(params);
|
|
u32 sscr0;
|
|
u32 sspsp;
|
|
int width = snd_pcm_format_physical_width(params_format(params));
|
|
|
|
/* select correct DMA params */
|
|
if (substream->stream != SNDRV_PCM_STREAM_PLAYBACK)
|
|
dma = 1; /* capture DMA offset is 1,3 */
|
|
if (chn == 2)
|
|
dma += 2; /* stereo DMA offset is 2, mono is 0 */
|
|
cpu_dai->dma_data = ssp_dma_params[cpu_dai->id][dma];
|
|
|
|
dev_dbg(&ssp->pdev->dev, "pxa_ssp_hw_params: dma %d\n", dma);
|
|
|
|
/* we can only change the settings if the port is not in use */
|
|
if (ssp_read_reg(ssp, SSCR0) & SSCR0_SSE)
|
|
return 0;
|
|
|
|
/* clear selected SSP bits */
|
|
sscr0 = ssp_read_reg(ssp, SSCR0) & ~(SSCR0_DSS | SSCR0_EDSS);
|
|
ssp_write_reg(ssp, SSCR0, sscr0);
|
|
|
|
/* bit size */
|
|
sscr0 = ssp_read_reg(ssp, SSCR0);
|
|
switch (params_format(params)) {
|
|
case SNDRV_PCM_FORMAT_S16_LE:
|
|
#ifdef CONFIG_PXA3xx
|
|
if (cpu_is_pxa3xx())
|
|
sscr0 |= SSCR0_FPCKE;
|
|
#endif
|
|
sscr0 |= SSCR0_DataSize(16);
|
|
if (params_channels(params) > 1)
|
|
sscr0 |= SSCR0_EDSS;
|
|
break;
|
|
case SNDRV_PCM_FORMAT_S24_LE:
|
|
sscr0 |= (SSCR0_EDSS | SSCR0_DataSize(8));
|
|
/* we must be in network mode (2 slots) for 24 bit stereo */
|
|
break;
|
|
case SNDRV_PCM_FORMAT_S32_LE:
|
|
sscr0 |= (SSCR0_EDSS | SSCR0_DataSize(16));
|
|
/* we must be in network mode (2 slots) for 32 bit stereo */
|
|
break;
|
|
}
|
|
ssp_write_reg(ssp, SSCR0, sscr0);
|
|
|
|
switch (priv->dai_fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
|
|
case SND_SOC_DAIFMT_I2S:
|
|
/* Cleared when the DAI format is set */
|
|
sspsp = ssp_read_reg(ssp, SSPSP) | SSPSP_SFRMWDTH(width);
|
|
ssp_write_reg(ssp, SSPSP, sspsp);
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
|
|
/* We always use a network mode so we always require TDM slots
|
|
* - complain loudly and fail if they've not been set up yet.
|
|
*/
|
|
if (!(ssp_read_reg(ssp, SSTSA) & 0xf)) {
|
|
dev_err(&ssp->pdev->dev, "No TDM timeslot configured\n");
|
|
return -EINVAL;
|
|
}
|
|
|
|
dump_registers(ssp);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int pxa_ssp_trigger(struct snd_pcm_substream *substream, int cmd,
|
|
struct snd_soc_dai *dai)
|
|
{
|
|
struct snd_soc_pcm_runtime *rtd = substream->private_data;
|
|
struct snd_soc_dai *cpu_dai = rtd->dai->cpu_dai;
|
|
int ret = 0;
|
|
struct ssp_priv *priv = cpu_dai->private_data;
|
|
struct ssp_device *ssp = priv->dev.ssp;
|
|
int val;
|
|
|
|
switch (cmd) {
|
|
case SNDRV_PCM_TRIGGER_RESUME:
|
|
ssp_enable(&priv->dev);
|
|
break;
|
|
case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
|
|
val = ssp_read_reg(ssp, SSCR1);
|
|
if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
|
|
val |= SSCR1_TSRE;
|
|
else
|
|
val |= SSCR1_RSRE;
|
|
ssp_write_reg(ssp, SSCR1, val);
|
|
val = ssp_read_reg(ssp, SSSR);
|
|
ssp_write_reg(ssp, SSSR, val);
|
|
break;
|
|
case SNDRV_PCM_TRIGGER_START:
|
|
val = ssp_read_reg(ssp, SSCR1);
|
|
if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
|
|
val |= SSCR1_TSRE;
|
|
else
|
|
val |= SSCR1_RSRE;
|
|
ssp_write_reg(ssp, SSCR1, val);
|
|
ssp_enable(&priv->dev);
|
|
break;
|
|
case SNDRV_PCM_TRIGGER_STOP:
|
|
val = ssp_read_reg(ssp, SSCR1);
|
|
if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
|
|
val &= ~SSCR1_TSRE;
|
|
else
|
|
val &= ~SSCR1_RSRE;
|
|
ssp_write_reg(ssp, SSCR1, val);
|
|
break;
|
|
case SNDRV_PCM_TRIGGER_SUSPEND:
|
|
ssp_disable(&priv->dev);
|
|
break;
|
|
case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
|
|
val = ssp_read_reg(ssp, SSCR1);
|
|
if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
|
|
val &= ~SSCR1_TSRE;
|
|
else
|
|
val &= ~SSCR1_RSRE;
|
|
ssp_write_reg(ssp, SSCR1, val);
|
|
break;
|
|
|
|
default:
|
|
ret = -EINVAL;
|
|
}
|
|
|
|
dump_registers(ssp);
|
|
|
|
return ret;
|
|
}
|
|
|
|
static int pxa_ssp_probe(struct platform_device *pdev,
|
|
struct snd_soc_dai *dai)
|
|
{
|
|
struct ssp_priv *priv;
|
|
int ret;
|
|
|
|
priv = kzalloc(sizeof(struct ssp_priv), GFP_KERNEL);
|
|
if (!priv)
|
|
return -ENOMEM;
|
|
|
|
priv->dev.ssp = ssp_request(dai->id + 1, "SoC audio");
|
|
if (priv->dev.ssp == NULL) {
|
|
ret = -ENODEV;
|
|
goto err_priv;
|
|
}
|
|
|
|
dai->private_data = priv;
|
|
|
|
return 0;
|
|
|
|
err_priv:
|
|
kfree(priv);
|
|
return ret;
|
|
}
|
|
|
|
static void pxa_ssp_remove(struct platform_device *pdev,
|
|
struct snd_soc_dai *dai)
|
|
{
|
|
struct ssp_priv *priv = dai->private_data;
|
|
ssp_free(priv->dev.ssp);
|
|
}
|
|
|
|
#define PXA_SSP_RATES (SNDRV_PCM_RATE_8000 | SNDRV_PCM_RATE_11025 |\
|
|
SNDRV_PCM_RATE_16000 | SNDRV_PCM_RATE_22050 | \
|
|
SNDRV_PCM_RATE_44100 | SNDRV_PCM_RATE_48000 | \
|
|
SNDRV_PCM_RATE_88200 | SNDRV_PCM_RATE_96000)
|
|
|
|
#define PXA_SSP_FORMATS (SNDRV_PCM_FMTBIT_S16_LE |\
|
|
SNDRV_PCM_FMTBIT_S24_LE | \
|
|
SNDRV_PCM_FMTBIT_S32_LE)
|
|
|
|
struct snd_soc_dai pxa_ssp_dai[] = {
|
|
{
|
|
.name = "pxa2xx-ssp1",
|
|
.id = 0,
|
|
.probe = pxa_ssp_probe,
|
|
.remove = pxa_ssp_remove,
|
|
.suspend = pxa_ssp_suspend,
|
|
.resume = pxa_ssp_resume,
|
|
.playback = {
|
|
.channels_min = 1,
|
|
.channels_max = 2,
|
|
.rates = PXA_SSP_RATES,
|
|
.formats = PXA_SSP_FORMATS,
|
|
},
|
|
.capture = {
|
|
.channels_min = 1,
|
|
.channels_max = 2,
|
|
.rates = PXA_SSP_RATES,
|
|
.formats = PXA_SSP_FORMATS,
|
|
},
|
|
.ops = {
|
|
.startup = pxa_ssp_startup,
|
|
.shutdown = pxa_ssp_shutdown,
|
|
.trigger = pxa_ssp_trigger,
|
|
.hw_params = pxa_ssp_hw_params,
|
|
.set_sysclk = pxa_ssp_set_dai_sysclk,
|
|
.set_clkdiv = pxa_ssp_set_dai_clkdiv,
|
|
.set_pll = pxa_ssp_set_dai_pll,
|
|
.set_fmt = pxa_ssp_set_dai_fmt,
|
|
.set_tdm_slot = pxa_ssp_set_dai_tdm_slot,
|
|
.set_tristate = pxa_ssp_set_dai_tristate,
|
|
},
|
|
},
|
|
{ .name = "pxa2xx-ssp2",
|
|
.id = 1,
|
|
.probe = pxa_ssp_probe,
|
|
.remove = pxa_ssp_remove,
|
|
.suspend = pxa_ssp_suspend,
|
|
.resume = pxa_ssp_resume,
|
|
.playback = {
|
|
.channels_min = 1,
|
|
.channels_max = 2,
|
|
.rates = PXA_SSP_RATES,
|
|
.formats = PXA_SSP_FORMATS,
|
|
},
|
|
.capture = {
|
|
.channels_min = 1,
|
|
.channels_max = 2,
|
|
.rates = PXA_SSP_RATES,
|
|
.formats = PXA_SSP_FORMATS,
|
|
},
|
|
.ops = {
|
|
.startup = pxa_ssp_startup,
|
|
.shutdown = pxa_ssp_shutdown,
|
|
.trigger = pxa_ssp_trigger,
|
|
.hw_params = pxa_ssp_hw_params,
|
|
.set_sysclk = pxa_ssp_set_dai_sysclk,
|
|
.set_clkdiv = pxa_ssp_set_dai_clkdiv,
|
|
.set_pll = pxa_ssp_set_dai_pll,
|
|
.set_fmt = pxa_ssp_set_dai_fmt,
|
|
.set_tdm_slot = pxa_ssp_set_dai_tdm_slot,
|
|
.set_tristate = pxa_ssp_set_dai_tristate,
|
|
},
|
|
},
|
|
{
|
|
.name = "pxa2xx-ssp3",
|
|
.id = 2,
|
|
.probe = pxa_ssp_probe,
|
|
.remove = pxa_ssp_remove,
|
|
.suspend = pxa_ssp_suspend,
|
|
.resume = pxa_ssp_resume,
|
|
.playback = {
|
|
.channels_min = 1,
|
|
.channels_max = 2,
|
|
.rates = PXA_SSP_RATES,
|
|
.formats = PXA_SSP_FORMATS,
|
|
},
|
|
.capture = {
|
|
.channels_min = 1,
|
|
.channels_max = 2,
|
|
.rates = PXA_SSP_RATES,
|
|
.formats = PXA_SSP_FORMATS,
|
|
},
|
|
.ops = {
|
|
.startup = pxa_ssp_startup,
|
|
.shutdown = pxa_ssp_shutdown,
|
|
.trigger = pxa_ssp_trigger,
|
|
.hw_params = pxa_ssp_hw_params,
|
|
.set_sysclk = pxa_ssp_set_dai_sysclk,
|
|
.set_clkdiv = pxa_ssp_set_dai_clkdiv,
|
|
.set_pll = pxa_ssp_set_dai_pll,
|
|
.set_fmt = pxa_ssp_set_dai_fmt,
|
|
.set_tdm_slot = pxa_ssp_set_dai_tdm_slot,
|
|
.set_tristate = pxa_ssp_set_dai_tristate,
|
|
},
|
|
},
|
|
{
|
|
.name = "pxa2xx-ssp4",
|
|
.id = 3,
|
|
.probe = pxa_ssp_probe,
|
|
.remove = pxa_ssp_remove,
|
|
.suspend = pxa_ssp_suspend,
|
|
.resume = pxa_ssp_resume,
|
|
.playback = {
|
|
.channels_min = 1,
|
|
.channels_max = 2,
|
|
.rates = PXA_SSP_RATES,
|
|
.formats = PXA_SSP_FORMATS,
|
|
},
|
|
.capture = {
|
|
.channels_min = 1,
|
|
.channels_max = 2,
|
|
.rates = PXA_SSP_RATES,
|
|
.formats = PXA_SSP_FORMATS,
|
|
},
|
|
.ops = {
|
|
.startup = pxa_ssp_startup,
|
|
.shutdown = pxa_ssp_shutdown,
|
|
.trigger = pxa_ssp_trigger,
|
|
.hw_params = pxa_ssp_hw_params,
|
|
.set_sysclk = pxa_ssp_set_dai_sysclk,
|
|
.set_clkdiv = pxa_ssp_set_dai_clkdiv,
|
|
.set_pll = pxa_ssp_set_dai_pll,
|
|
.set_fmt = pxa_ssp_set_dai_fmt,
|
|
.set_tdm_slot = pxa_ssp_set_dai_tdm_slot,
|
|
.set_tristate = pxa_ssp_set_dai_tristate,
|
|
},
|
|
},
|
|
};
|
|
EXPORT_SYMBOL_GPL(pxa_ssp_dai);
|
|
|
|
static int __init pxa_ssp_init(void)
|
|
{
|
|
return snd_soc_register_dais(pxa_ssp_dai, ARRAY_SIZE(pxa_ssp_dai));
|
|
}
|
|
module_init(pxa_ssp_init);
|
|
|
|
static void __exit pxa_ssp_exit(void)
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{
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snd_soc_unregister_dais(pxa_ssp_dai, ARRAY_SIZE(pxa_ssp_dai));
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}
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module_exit(pxa_ssp_exit);
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/* Module information */
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MODULE_AUTHOR("Mark Brown <broonie@opensource.wolfsonmicro.com>");
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MODULE_DESCRIPTION("PXA SSP/PCM SoC Interface");
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MODULE_LICENSE("GPL");
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