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authorJassi Brar <jassi.brar@samsung.com>2010-11-22 07:37:25 +0100
committerMark Brown <broonie@opensource.wolfsonmicro.com>2010-11-23 15:13:04 +0100
commit5033f43c66754296dfb0ac5c895208e4a7f93aac (patch)
tree343b6a07674afb35e026191c97bc6bc2f329f5bc /sound/soc/s3c24xx/s3c24xx_uda134x.c
parentASoC: Samsung: Generalize Kconfig symbols (diff)
downloadlinux-5033f43c66754296dfb0ac5c895208e4a7f93aac.tar.xz
linux-5033f43c66754296dfb0ac5c895208e4a7f93aac.zip
ASoC: Samsung: Rename from s3c24xx to samsung
Finally, move the 's3c24xx' directory to 'samsung' Signed-off-by: Jassi Brar <jassi.brar@samsung.com> Acked-by: Liam Girdwood <lrg@slimlogic.co.uk> Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Diffstat (limited to 'sound/soc/s3c24xx/s3c24xx_uda134x.c')
-rw-r--r--sound/soc/s3c24xx/s3c24xx_uda134x.c367
1 files changed, 0 insertions, 367 deletions
diff --git a/sound/soc/s3c24xx/s3c24xx_uda134x.c b/sound/soc/s3c24xx/s3c24xx_uda134x.c
deleted file mode 100644
index cdc8ecbcb8ef..000000000000
--- a/sound/soc/s3c24xx/s3c24xx_uda134x.c
+++ /dev/null
@@ -1,367 +0,0 @@
-/*
- * Modifications by Christian Pellegrin <chripell@evolware.org>
- *
- * s3c24xx_uda134x.c -- S3C24XX_UDA134X ALSA SoC Audio board driver
- *
- * Copyright 2007 Dension Audio Systems Ltd.
- * Author: Zoltan Devai
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
- */
-
-#include <linux/module.h>
-#include <linux/clk.h>
-#include <linux/mutex.h>
-#include <linux/gpio.h>
-#include <sound/pcm.h>
-#include <sound/pcm_params.h>
-#include <sound/soc.h>
-#include <sound/s3c24xx_uda134x.h>
-#include <sound/uda134x.h>
-
-#include <plat/regs-iis.h>
-
-#include "dma.h"
-#include "s3c24xx-i2s.h"
-#include "../codecs/uda134x.h"
-
-
-/* #define ENFORCE_RATES 1 */
-/*
- Unfortunately the S3C24XX in master mode has a limited capacity of
- generating the clock for the codec. If you define this only rates
- that are really available will be enforced. But be careful, most
- user level application just want the usual sampling frequencies (8,
- 11.025, 22.050, 44.1 kHz) and anyway resampling is a costly
- operation for embedded systems. So if you aren't very lucky or your
- hardware engineer wasn't very forward-looking it's better to leave
- this undefined. If you do so an approximate value for the requested
- sampling rate in the range -/+ 5% will be chosen. If this in not
- possible an error will be returned.
-*/
-
-static struct clk *xtal;
-static struct clk *pclk;
-/* this is need because we don't have a place where to keep the
- * pointers to the clocks in each substream. We get the clocks only
- * when we are actually using them so we don't block stuff like
- * frequency change or oscillator power-off */
-static int clk_users;
-static DEFINE_MUTEX(clk_lock);
-
-static unsigned int rates[33 * 2];
-#ifdef ENFORCE_RATES
-static struct snd_pcm_hw_constraint_list hw_constraints_rates = {
- .count = ARRAY_SIZE(rates),
- .list = rates,
- .mask = 0,
-};
-#endif
-
-static struct platform_device *s3c24xx_uda134x_snd_device;
-
-static int s3c24xx_uda134x_startup(struct snd_pcm_substream *substream)
-{
- int ret = 0;
-#ifdef ENFORCE_RATES
- struct snd_pcm_runtime *runtime = substream->runtime;
-#endif
-
- mutex_lock(&clk_lock);
- pr_debug("%s %d\n", __func__, clk_users);
- if (clk_users == 0) {
- xtal = clk_get(&s3c24xx_uda134x_snd_device->dev, "xtal");
- if (!xtal) {
- printk(KERN_ERR "%s cannot get xtal\n", __func__);
- ret = -EBUSY;
- } else {
- pclk = clk_get(&s3c24xx_uda134x_snd_device->dev,
- "pclk");
- if (!pclk) {
- printk(KERN_ERR "%s cannot get pclk\n",
- __func__);
- clk_put(xtal);
- ret = -EBUSY;
- }
- }
- if (!ret) {
- int i, j;
-
- for (i = 0; i < 2; i++) {
- int fs = i ? 256 : 384;
-
- rates[i*33] = clk_get_rate(xtal) / fs;
- for (j = 1; j < 33; j++)
- rates[i*33 + j] = clk_get_rate(pclk) /
- (j * fs);
- }
- }
- }
- clk_users += 1;
- mutex_unlock(&clk_lock);
- if (!ret) {
-#ifdef ENFORCE_RATES
- ret = snd_pcm_hw_constraint_list(runtime, 0,
- SNDRV_PCM_HW_PARAM_RATE,
- &hw_constraints_rates);
- if (ret < 0)
- printk(KERN_ERR "%s cannot set constraints\n",
- __func__);
-#endif
- }
- return ret;
-}
-
-static void s3c24xx_uda134x_shutdown(struct snd_pcm_substream *substream)
-{
- mutex_lock(&clk_lock);
- pr_debug("%s %d\n", __func__, clk_users);
- clk_users -= 1;
- if (clk_users == 0) {
- clk_put(xtal);
- xtal = NULL;
- clk_put(pclk);
- pclk = NULL;
- }
- mutex_unlock(&clk_lock);
-}
-
-static int s3c24xx_uda134x_hw_params(struct snd_pcm_substream *substream,
- struct snd_pcm_hw_params *params)
-{
- struct snd_soc_pcm_runtime *rtd = substream->private_data;
- struct snd_soc_dai *codec_dai = rtd->codec_dai;
- struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
- unsigned int clk = 0;
- int ret = 0;
- int clk_source, fs_mode;
- unsigned long rate = params_rate(params);
- long err, cerr;
- unsigned int div;
- int i, bi;
-
- err = 999999;
- bi = 0;
- for (i = 0; i < 2*33; i++) {
- cerr = rates[i] - rate;
- if (cerr < 0)
- cerr = -cerr;
- if (cerr < err) {
- err = cerr;
- bi = i;
- }
- }
- if (bi / 33 == 1)
- fs_mode = S3C2410_IISMOD_256FS;
- else
- fs_mode = S3C2410_IISMOD_384FS;
- if (bi % 33 == 0) {
- clk_source = S3C24XX_CLKSRC_MPLL;
- div = 1;
- } else {
- clk_source = S3C24XX_CLKSRC_PCLK;
- div = bi % 33;
- }
- pr_debug("%s desired rate %lu, %d\n", __func__, rate, bi);
-
- clk = (fs_mode == S3C2410_IISMOD_384FS ? 384 : 256) * rate;
- pr_debug("%s will use: %s %s %d sysclk %d err %ld\n", __func__,
- fs_mode == S3C2410_IISMOD_384FS ? "384FS" : "256FS",
- clk_source == S3C24XX_CLKSRC_MPLL ? "MPLLin" : "PCLK",
- div, clk, err);
-
- if ((err * 100 / rate) > 5) {
- printk(KERN_ERR "S3C24XX_UDA134X: effective frequency "
- "too different from desired (%ld%%)\n",
- err * 100 / rate);
- return -EINVAL;
- }
-
- ret = snd_soc_dai_set_fmt(codec_dai, SND_SOC_DAIFMT_I2S |
- SND_SOC_DAIFMT_NB_NF | SND_SOC_DAIFMT_CBS_CFS);
- if (ret < 0)
- return ret;
-
- ret = snd_soc_dai_set_fmt(cpu_dai, SND_SOC_DAIFMT_I2S |
- SND_SOC_DAIFMT_NB_NF | SND_SOC_DAIFMT_CBS_CFS);
- if (ret < 0)
- return ret;
-
- ret = snd_soc_dai_set_sysclk(cpu_dai, clk_source , clk,
- SND_SOC_CLOCK_IN);
- if (ret < 0)
- return ret;
-
- ret = snd_soc_dai_set_clkdiv(cpu_dai, S3C24XX_DIV_MCLK, fs_mode);
- if (ret < 0)
- return ret;
-
- ret = snd_soc_dai_set_clkdiv(cpu_dai, S3C24XX_DIV_BCLK,
- S3C2410_IISMOD_32FS);
- if (ret < 0)
- return ret;
-
- ret = snd_soc_dai_set_clkdiv(cpu_dai, S3C24XX_DIV_PRESCALER,
- S3C24XX_PRESCALE(div, div));
- if (ret < 0)
- return ret;
-
- /* set the codec system clock for DAC and ADC */
- ret = snd_soc_dai_set_sysclk(codec_dai, 0, clk,
- SND_SOC_CLOCK_OUT);
- if (ret < 0)
- return ret;
-
- return 0;
-}
-
-static struct snd_soc_ops s3c24xx_uda134x_ops = {
- .startup = s3c24xx_uda134x_startup,
- .shutdown = s3c24xx_uda134x_shutdown,
- .hw_params = s3c24xx_uda134x_hw_params,
-};
-
-static struct snd_soc_dai_link s3c24xx_uda134x_dai_link = {
- .name = "UDA134X",
- .stream_name = "UDA134X",
- .codec_name = "uda134x-hifi",
- .codec_dai_name = "uda134x-hifi",
- .cpu_dai_name = "s3c24xx-i2s",
- .ops = &s3c24xx_uda134x_ops,
- .platform_name = "samsung-audio",
-};
-
-static struct snd_soc_card snd_soc_s3c24xx_uda134x = {
- .name = "S3C24XX_UDA134X",
- .dai_link = &s3c24xx_uda134x_dai_link,
- .num_links = 1,
-};
-
-static struct s3c24xx_uda134x_platform_data *s3c24xx_uda134x_l3_pins;
-
-static void setdat(int v)
-{
- gpio_set_value(s3c24xx_uda134x_l3_pins->l3_data, v > 0);
-}
-
-static void setclk(int v)
-{
- gpio_set_value(s3c24xx_uda134x_l3_pins->l3_clk, v > 0);
-}
-
-static void setmode(int v)
-{
- gpio_set_value(s3c24xx_uda134x_l3_pins->l3_mode, v > 0);
-}
-
-/* FIXME - This must be codec platform data but in which board file ?? */
-static struct uda134x_platform_data s3c24xx_uda134x = {
- .l3 = {
- .setdat = setdat,
- .setclk = setclk,
- .setmode = setmode,
- .data_hold = 1,
- .data_setup = 1,
- .clock_high = 1,
- .mode_hold = 1,
- .mode = 1,
- .mode_setup = 1,
- },
-};
-
-static int s3c24xx_uda134x_setup_pin(int pin, char *fun)
-{
- if (gpio_request(pin, "s3c24xx_uda134x") < 0) {
- printk(KERN_ERR "S3C24XX_UDA134X SoC Audio: "
- "l3 %s pin already in use", fun);
- return -EBUSY;
- }
- gpio_direction_output(pin, 0);
- return 0;
-}
-
-static int s3c24xx_uda134x_probe(struct platform_device *pdev)
-{
- int ret;
-
- printk(KERN_INFO "S3C24XX_UDA134X SoC Audio driver\n");
-
- s3c24xx_uda134x_l3_pins = pdev->dev.platform_data;
- if (s3c24xx_uda134x_l3_pins == NULL) {
- printk(KERN_ERR "S3C24XX_UDA134X SoC Audio: "
- "unable to find platform data\n");
- return -ENODEV;
- }
- s3c24xx_uda134x.power = s3c24xx_uda134x_l3_pins->power;
- s3c24xx_uda134x.model = s3c24xx_uda134x_l3_pins->model;
-
- if (s3c24xx_uda134x_setup_pin(s3c24xx_uda134x_l3_pins->l3_data,
- "data") < 0)
- return -EBUSY;
- if (s3c24xx_uda134x_setup_pin(s3c24xx_uda134x_l3_pins->l3_clk,
- "clk") < 0) {
- gpio_free(s3c24xx_uda134x_l3_pins->l3_data);
- return -EBUSY;
- }
- if (s3c24xx_uda134x_setup_pin(s3c24xx_uda134x_l3_pins->l3_mode,
- "mode") < 0) {
- gpio_free(s3c24xx_uda134x_l3_pins->l3_data);
- gpio_free(s3c24xx_uda134x_l3_pins->l3_clk);
- return -EBUSY;
- }
-
- s3c24xx_uda134x_snd_device = platform_device_alloc("soc-audio", -1);
- if (!s3c24xx_uda134x_snd_device) {
- printk(KERN_ERR "S3C24XX_UDA134X SoC Audio: "
- "Unable to register\n");
- return -ENOMEM;
- }
-
- platform_set_drvdata(s3c24xx_uda134x_snd_device,
- &snd_soc_s3c24xx_uda134x);
- ret = platform_device_add(s3c24xx_uda134x_snd_device);
- if (ret) {
- printk(KERN_ERR "S3C24XX_UDA134X SoC Audio: Unable to add\n");
- platform_device_put(s3c24xx_uda134x_snd_device);
- }
-
- return ret;
-}
-
-static int s3c24xx_uda134x_remove(struct platform_device *pdev)
-{
- platform_device_unregister(s3c24xx_uda134x_snd_device);
- gpio_free(s3c24xx_uda134x_l3_pins->l3_data);
- gpio_free(s3c24xx_uda134x_l3_pins->l3_clk);
- gpio_free(s3c24xx_uda134x_l3_pins->l3_mode);
- return 0;
-}
-
-static struct platform_driver s3c24xx_uda134x_driver = {
- .probe = s3c24xx_uda134x_probe,
- .remove = s3c24xx_uda134x_remove,
- .driver = {
- .name = "s3c24xx_uda134x",
- .owner = THIS_MODULE,
- },
-};
-
-static int __init s3c24xx_uda134x_init(void)
-{
- return platform_driver_register(&s3c24xx_uda134x_driver);
-}
-
-static void __exit s3c24xx_uda134x_exit(void)
-{
- platform_driver_unregister(&s3c24xx_uda134x_driver);
-}
-
-
-module_init(s3c24xx_uda134x_init);
-module_exit(s3c24xx_uda134x_exit);
-
-MODULE_AUTHOR("Zoltan Devai, Christian Pellegrin <chripell@evolware.org>");
-MODULE_DESCRIPTION("S3C24XX_UDA134X ALSA SoC audio driver");
-MODULE_LICENSE("GPL");