diff options
Diffstat (limited to 'recipes/linux/linux-smdk2443/0022-Add-initial-ASoC-SMDK2440-support.patch')
| -rw-r--r-- | recipes/linux/linux-smdk2443/0022-Add-initial-ASoC-SMDK2440-support.patch | 373 |
1 files changed, 373 insertions, 0 deletions
diff --git a/recipes/linux/linux-smdk2443/0022-Add-initial-ASoC-SMDK2440-support.patch b/recipes/linux/linux-smdk2443/0022-Add-initial-ASoC-SMDK2440-support.patch new file mode 100644 index 0000000000..01b51d925e --- /dev/null +++ b/recipes/linux/linux-smdk2443/0022-Add-initial-ASoC-SMDK2440-support.patch @@ -0,0 +1,373 @@ +From a6171bfad4671fe525ae2c8cddd4f6a7f739e346 Mon Sep 17 00:00:00 2001 +From: Liam Girdwood <liam@localhost.localdomain> +Date: Sun, 4 Mar 2007 17:00:59 +0000 +Subject: [PATCH] Add initial ASoC SMDK2440 support. + +Signed-off-by: Ben Dooks <ben@simtec.co.uk> +Signed-off-by: Graeme Gregory <gg@opensource.wolfsonmicro.com> +Signed-off-by: Liam Girdwood <lg@opensource.wolfsonmicro.com> +--- + sound/soc/s3c24xx/Kconfig | 7 + + sound/soc/s3c24xx/Makefile | 2 + + sound/soc/s3c24xx/smdk2440.c | 320 ++++++++++++++++++++++++++++++++++++++++++ + 3 files changed, 329 insertions(+), 0 deletions(-) + create mode 100644 sound/soc/s3c24xx/smdk2440.c + +diff --git a/sound/soc/s3c24xx/Kconfig b/sound/soc/s3c24xx/Kconfig +index c414886..99fe902 100644 +--- a/sound/soc/s3c24xx/Kconfig ++++ b/sound/soc/s3c24xx/Kconfig +@@ -21,5 +21,12 @@ config SND_S3C24XX_SOC_NEO1973_WM8753 + Say Y if you want to add support for SoC audio on smdk2440 + with the WM8753. + ++config SND_S3C24XX_SOC_SMDK2440 ++ tristate "SoC I2S Audio support for SMDK2440" ++ depends on SND_S3C24XX_SOC && MACH_SMDK ++ select SND_S3C24XX_SOC_I2S ++ help ++ Say Y if you want to add support for SoC audio on SMDK2440 ++ + endmenu + +diff --git a/sound/soc/s3c24xx/Makefile b/sound/soc/s3c24xx/Makefile +index 7b5c6fe..b991052 100644 +--- a/sound/soc/s3c24xx/Makefile ++++ b/sound/soc/s3c24xx/Makefile +@@ -7,5 +7,7 @@ obj-$(CONFIG_SND_S3C24XX_SOC_I2S) += snd-soc-s3c24xx-i2s.o + + # S3C24XX Machine Support + snd-soc-neo1973-wm8753-objs := neo1973_wm8753.o ++snd-soc-smdk2440-objs := smdk2440.o + + obj-$(CONFIG_SND_S3C24XX_SOC_NEO1973_WM8753) += snd-soc-neo1973-wm8753.o ++obj-$(CONFIG_SND_S3C24XX_SOC_SMDK2440) += snd-soc-smdk2440.o +diff --git a/sound/soc/s3c24xx/smdk2440.c b/sound/soc/s3c24xx/smdk2440.c +new file mode 100644 +index 0000000..9885a5e +--- /dev/null ++++ b/sound/soc/s3c24xx/smdk2440.c +@@ -0,0 +1,320 @@ ++/* ++ * smdk2440.c -- ALSA Soc Audio Layer ++ * ++ * (c) 2006 Wolfson Microelectronics PLC. ++ * Graeme Gregory graeme.gregory@wolfsonmicro.com or linux@wolfsonmicro.com ++ * ++ * (c) 2004-2005 Simtec Electronics ++ * http://armlinux.simtec.co.uk/ ++ * Ben Dooks <ben@simtec.co.uk> ++ * ++ * This program is free software; you can redistribute it and/or modify it ++ * under the terms of the GNU General Public License as published by the ++ * Free Software Foundation; either version 2 of the License, or (at your ++ * option) any later version. ++ * ++ * This module is a modified version of the s3c24xx I2S driver supplied by ++ * Ben Dooks of Simtec and rejigged to the ASoC style at Wolfson Microelectronics ++ * ++ * Revision history ++ * 11th Dec 2006 Merged with Simtec driver ++ * 10th Nov 2006 Initial version. ++ */ ++ ++#include <linux/module.h> ++#include <linux/moduleparam.h> ++#include <linux/timer.h> ++#include <linux/interrupt.h> ++#include <linux/platform_device.h> ++#include <sound/driver.h> ++#include <sound/core.h> ++#include <sound/pcm.h> ++#include <sound/soc.h> ++#include <sound/soc-dapm.h> ++ ++#include <asm/mach-types.h> ++#include <asm/hardware/scoop.h> ++#include <asm/arch/regs-iis.h> ++#include <asm/arch/regs-clock.h> ++#include <asm/arch/regs-gpio.h> ++#include <asm/arch/hardware.h> ++#include <asm/arch/audio.h> ++#include <asm/io.h> ++#include <asm/arch/spi-gpio.h> ++#include "../codecs/uda1380.h" ++#include "s3c24xx-pcm.h" ++#include "s3c24xx-i2s.h" ++ ++#define SMDK2440_DEBUG 0 ++#if SMDK2440_DEBUG ++#define DBG(x...) printk(KERN_DEBUG x) ++#else ++#define DBG(x...) ++#endif ++ ++/* audio clock in Hz */ ++#define SMDK_CLOCK_SOURCE S3C24XX_CLKSRC_MPLL ++#define SMDK_CRYSTAL_CLOCK 16934400 ++ ++static int smdk2440_startup(struct snd_pcm_substream *substream) ++{ ++ struct snd_soc_pcm_runtime *rtd = substream->private_data; ++ struct snd_soc_codec *codec = rtd->socdev->codec; ++ ++ DBG("Entered smdk2440_startup\n"); ++ ++ return 0; ++} ++ ++static int smdk2440_shutdown(struct snd_pcm_substream *substream) ++{ ++ struct snd_soc_pcm_runtime *rtd = substream->private_data; ++ struct snd_soc_codec *codec = rtd->socdev->codec; ++ ++ DBG("Entered smdk2440_shutdown\n"); ++ ++ return 0; ++} ++ ++static int smdk2440_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_cpu_dai *cpu_dai = rtd->dai->cpu_dai; ++ struct snd_soc_codec_dai *codec_dai = rtd->dai->codec_dai; ++ unsigned long iis_clkrate; ++ int div, div256, div384, diff256, diff384, bclk, mclk; ++ int ret; ++ unsigned int rate=params_rate(params); ++ ++ DBG("Entered %s\n",__FUNCTION__); ++ ++ iis_clkrate = s3c24xx_i2s_get_clockrate(); ++ ++ /* Using PCLK doesnt seem to suit audio particularly well on these cpu's ++ */ ++ ++ div256 = iis_clkrate / (rate * 256); ++ div384 = iis_clkrate / (rate * 384); ++ ++ if (((iis_clkrate / div256) - (rate * 256)) < ++ ((rate * 256) - (iis_clkrate / (div256 + 1)))) { ++ diff256 = (iis_clkrate / div256) - (rate * 256); ++ } else { ++ div256++; ++ diff256 = (iis_clkrate / div256) - (rate * 256); ++ } ++ ++ if (((iis_clkrate / div384) - (rate * 384)) < ++ ((rate * 384) - (iis_clkrate / (div384 + 1)))) { ++ diff384 = (iis_clkrate / div384) - (rate * 384); ++ } else { ++ div384++; ++ diff384 = (iis_clkrate / div384) - (rate * 384); ++ } ++ ++ DBG("diff256 %d, diff384 %d\n", diff256, diff384); ++ ++ if (diff256<=diff384) { ++ DBG("Selected 256FS\n"); ++ div = div256 - 1; ++ bclk = S3C2410_IISMOD_256FS; ++ } else { ++ DBG("Selected 384FS\n"); ++ div = div384 - 1; ++ bclk = S3C2410_IISMOD_384FS; ++ } ++ ++ /* set codec DAI configuration */ ++ ret = codec_dai->dai_ops.set_fmt(codec_dai, SND_SOC_DAIFMT_I2S | ++ SND_SOC_DAIFMT_NB_NF | SND_SOC_DAIFMT_CBS_CFS); ++ if (ret < 0) ++ return ret; ++ ++ /* set cpu DAI configuration */ ++ ret = cpu_dai->dai_ops.set_fmt(cpu_dai, SND_SOC_DAIFMT_I2S | ++ SND_SOC_DAIFMT_NB_NF | SND_SOC_DAIFMT_CBS_CFS); ++ if (ret < 0) ++ return ret; ++ ++ /* set the audio system clock for DAC and ADC */ ++ ret = cpu_dai->dai_ops.set_sysclk(cpu_dai, S3C24XX_CLKSRC_PCLK, ++ rate, SND_SOC_CLOCK_OUT); ++ if (ret < 0) ++ return ret; ++ ++ /* set MCLK division for sample rate */ ++ ret = cpu_dai->dai_ops.set_clkdiv(cpu_dai, S3C24XX_DIV_MCLK, S3C2410_IISMOD_32FS ); ++ if (ret < 0) ++ return ret; ++ ++ /* set BCLK division for sample rate */ ++ ret = cpu_dai->dai_ops.set_clkdiv(cpu_dai, S3C24XX_DIV_BCLK, bclk); ++ if (ret < 0) ++ return ret; ++ ++ /* set prescaler division for sample rate */ ++ ret = cpu_dai->dai_ops.set_clkdiv(cpu_dai, S3C24XX_DIV_PRESCALER, ++ S3C24XX_PRESCALE(div,div)); ++ if (ret < 0) ++ return ret; ++ ++ return 0; ++} ++ ++static struct snd_soc_ops smdk2440_ops = { ++ .startup = smdk2440_startup, ++ .shutdown = smdk2440_shutdown, ++ .hw_params = smdk2440_hw_params, ++}; ++ ++/* smdk2440 machine dapm widgets */ ++static const struct snd_soc_dapm_widget smdk2440_dapm_widgets[] = { ++SND_SOC_DAPM_HP("Headphone Jack", NULL), ++SND_SOC_DAPM_MIC("Mic Jack", NULL), ++SND_SOC_DAPM_LINE("Line Jack", NULL), ++}; ++ ++/* smdk2440 machine audio map (connections to the codec pins) */ ++static const char* audio_map[][3] = { ++ /* headphone connected to HPOUT */ ++ {"Headphone Jack", NULL, "HPOUT"}, ++ ++ /* mic is connected to MICIN (via right channel of headphone jack) */ ++ {"MICIN", NULL, "Mic Jack"}, ++ {"MICIN", NULL, "Line Jack"}, ++ ++ {NULL, NULL, NULL}, ++}; ++ ++/* ++ * Logic for a UDA1341 as attached to SMDK2440 ++ */ ++static int smdk2440_uda1341_init(struct snd_soc_codec *codec) ++{ ++ int i, err; ++ ++ DBG("Staring smdk2440 init\n"); ++ ++ /* Add smdk2440 specific widgets */ ++ for(i = 0; i < ARRAY_SIZE(smdk2440_dapm_widgets); i++) { ++ snd_soc_dapm_new_control(codec, &smdk2440_dapm_widgets[i]); ++ } ++ ++ /* Set up smdk2440 specific audio path audio_mapnects */ ++ for(i = 0; audio_map[i][0] != NULL; i++) { ++ snd_soc_dapm_connect_input(codec, audio_map[i][0], ++ audio_map[i][1], audio_map[i][2]); ++ } ++ ++ snd_soc_dapm_sync_endpoints(codec); ++ ++ DBG("Ending smdk2440 init\n"); ++ ++ return 0; ++} ++ ++/* s3c24xx digital audio interface glue - connects codec <--> CPU */ ++static struct snd_soc_dai_link s3c24xx_dai = { ++ .name = "WM8731", ++ .stream_name = "WM8731", ++ .cpu_dai = &s3c24xx_i2s_dai, ++ .codec_dai = &uda1380_dai, ++ .init = smdk2440_uda1341_init, ++ .ops = &smdk2440_ops, ++}; ++ ++/* smdk2440 audio machine driver */ ++static struct snd_soc_machine snd_soc_machine_smdk2440 = { ++ .name = "SMDK2440", ++ .dai_link = &s3c24xx_dai, ++ .num_links = 1, ++}; ++ ++static struct uda1380_setup_data smdk2440_uda1380_setup = { ++ .i2c_address = 0x00, ++}; ++ ++/* s3c24xx audio subsystem */ ++static struct snd_soc_device s3c24xx_snd_devdata = { ++ .machine = &snd_soc_machine_smdk2440, ++ .platform = &s3c24xx_soc_platform, ++ .codec_dev = &soc_codec_dev_uda1380, ++ .codec_data = &smdk2440_uda1380_setup, ++}; ++ ++static struct platform_device *s3c24xx_snd_device; ++ ++struct smdk2440_spi_device { ++ struct device *dev; ++}; ++ ++static struct smdk2440_spi_device smdk2440_spi_devdata = { ++}; ++ ++struct s3c2410_spigpio_info smdk2440_spi_devinfo = { ++ .pin_clk = S3C2410_GPF4, ++ .pin_mosi = S3C2410_GPF5, ++ .pin_miso = S3C2410_GPF6, ++ //.board_size, ++ //.board_info, ++ .chip_select=NULL, ++}; ++ ++static struct platform_device *smdk2440_spi_device; ++ ++static int __init smdk2440_init(void) ++{ ++ int ret; ++ ++ if (!machine_is_smdk2440() && !machine_is_s3c2440()) { ++ DBG("%d\n",machine_arch_type); ++ DBG("Not a SMDK2440\n"); ++ return -ENODEV; ++ } ++ ++ s3c24xx_snd_device = platform_device_alloc("soc-audio", -1); ++ if (!s3c24xx_snd_device) { ++ DBG("platform_dev_alloc failed\n"); ++ return -ENOMEM; ++ } ++ ++ platform_set_drvdata(s3c24xx_snd_device, &s3c24xx_snd_devdata); ++ s3c24xx_snd_devdata.dev = &s3c24xx_snd_device->dev; ++ ret = platform_device_add(s3c24xx_snd_device); ++ ++ if (ret) ++ platform_device_put(s3c24xx_snd_device); ++ ++ // Create a bitbanged SPI device ++ ++ smdk2440_spi_device = platform_device_alloc("s3c24xx-spi-gpio",-1); ++ if (!smdk2440_spi_device) { ++ DBG("smdk2440_spi_device : platform_dev_alloc failed\n"); ++ return -ENOMEM; ++ } ++ DBG("Return Code %d\n",ret); ++ ++ platform_set_drvdata(smdk2440_spi_device, &smdk2440_spi_devdata); ++ smdk2440_spi_devdata.dev = &smdk2440_spi_device->dev; ++ smdk2440_spi_devdata.dev->platform_data = &smdk2440_spi_devinfo; ++ ret = platform_device_add(smdk2440_spi_device); ++ ++ if (ret) ++ platform_device_put(smdk2440_spi_device); ++ ++ return ret; ++} ++ ++static void __exit smdk2440_exit(void) ++{ ++ platform_device_unregister(s3c24xx_snd_device); ++} ++ ++module_init(smdk2440_init); ++module_exit(smdk2440_exit); ++ ++/* Module information */ ++MODULE_AUTHOR("Ben Dooks, <ben@simtec.co.uk>"); ++MODULE_DESCRIPTION("ALSA SoC SMDK2440"); ++MODULE_LICENSE("GPL"); +-- +1.5.0.3 + |