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![Arnd Bergmann](/assets/img/avatar_default.png)
As we are now passing the filter data as pointers to the drivers, we can take the final step and also pass the filter function the same way. I'm keeping this change separate, as there it's less obvious that this is a net win. Upsides of this are: - The ASoC drivers are completely independent from the DMA engine implementation, which simplifies the Kconfig logic and in theory allows the same sound drivers to be built in a kernel that supports different kinds of dmaengine drivers. - Consistency with other subsystems and drivers On the other hand, we have a few downsides: - The s3c24xx-dma driver now needs to be built-in for the ac97 platform device to be instantiated on s3c2440. - samsung_dmaengine_pcm_config cannot be marked 'const' any more because the filter function pointer needs to be set at runtime. This is safe as long we don't have multiple different DMA engines in thet same system at runtime, but is nonetheless ugly. Signed-off-by: Arnd Bergmann <arnd@arndb.de> Reviewed-by: Krzysztof Kozlowski <k.kozlowski@samsung.com> Signed-off-by: Mark Brown <broonie@kernel.org>
239 lines
5.6 KiB
C
239 lines
5.6 KiB
C
/* linux/arch/arm/plat-s3c/dev-audio.c
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*
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* Copyright 2009 Wolfson Microelectronics
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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
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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*/
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#include <linux/kernel.h>
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#include <linux/string.h>
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#include <linux/platform_device.h>
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#include <linux/dma-mapping.h>
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#include <linux/gpio.h>
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#include <linux/export.h>
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#include <mach/irqs.h>
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#include <mach/map.h>
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#include <mach/dma.h>
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#include <plat/devs.h>
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#include <linux/platform_data/asoc-s3c.h>
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#include <plat/gpio-cfg.h>
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#include <mach/gpio-samsung.h>
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static int s3c64xx_i2s_cfg_gpio(struct platform_device *pdev)
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{
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unsigned int base;
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switch (pdev->id) {
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case 0:
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base = S3C64XX_GPD(0);
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break;
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case 1:
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base = S3C64XX_GPE(0);
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break;
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case 2:
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s3c_gpio_cfgpin(S3C64XX_GPC(4), S3C_GPIO_SFN(5));
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s3c_gpio_cfgpin(S3C64XX_GPC(5), S3C_GPIO_SFN(5));
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s3c_gpio_cfgpin(S3C64XX_GPC(7), S3C_GPIO_SFN(5));
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s3c_gpio_cfgpin_range(S3C64XX_GPH(6), 4, S3C_GPIO_SFN(5));
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return 0;
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default:
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printk(KERN_DEBUG "Invalid I2S Controller number: %d\n",
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pdev->id);
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return -EINVAL;
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}
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s3c_gpio_cfgpin_range(base, 5, S3C_GPIO_SFN(3));
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return 0;
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}
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static struct resource s3c64xx_iis0_resource[] = {
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[0] = DEFINE_RES_MEM(S3C64XX_PA_IIS0, SZ_256),
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};
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static struct s3c_audio_pdata i2s0_pdata = {
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.cfg_gpio = s3c64xx_i2s_cfg_gpio,
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.dma_filter = pl08x_filter_id,
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.dma_playback = DMACH_I2S0_OUT,
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.dma_capture = DMACH_I2S0_IN,
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};
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struct platform_device s3c64xx_device_iis0 = {
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.name = "samsung-i2s",
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.id = 0,
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.num_resources = ARRAY_SIZE(s3c64xx_iis0_resource),
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.resource = s3c64xx_iis0_resource,
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.dev = {
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.platform_data = &i2s0_pdata,
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},
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};
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EXPORT_SYMBOL(s3c64xx_device_iis0);
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static struct resource s3c64xx_iis1_resource[] = {
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[0] = DEFINE_RES_MEM(S3C64XX_PA_IIS1, SZ_256),
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};
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static struct s3c_audio_pdata i2s1_pdata = {
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.cfg_gpio = s3c64xx_i2s_cfg_gpio,
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.dma_filter = pl08x_filter_id,
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.dma_playback = DMACH_I2S1_OUT,
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.dma_capture = DMACH_I2S1_IN,
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};
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struct platform_device s3c64xx_device_iis1 = {
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.name = "samsung-i2s",
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.id = 1,
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.num_resources = ARRAY_SIZE(s3c64xx_iis1_resource),
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.resource = s3c64xx_iis1_resource,
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.dev = {
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.platform_data = &i2s1_pdata,
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},
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};
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EXPORT_SYMBOL(s3c64xx_device_iis1);
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static struct resource s3c64xx_iisv4_resource[] = {
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[0] = DEFINE_RES_MEM(S3C64XX_PA_IISV4, SZ_256),
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};
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static struct s3c_audio_pdata i2sv4_pdata = {
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.cfg_gpio = s3c64xx_i2s_cfg_gpio,
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.dma_filter = pl08x_filter_id,
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.dma_playback = DMACH_HSI_I2SV40_TX,
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.dma_capture = DMACH_HSI_I2SV40_RX,
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.type = {
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.i2s = {
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.quirks = QUIRK_PRI_6CHAN,
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},
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},
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};
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struct platform_device s3c64xx_device_iisv4 = {
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.name = "samsung-i2s",
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.id = 2,
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.num_resources = ARRAY_SIZE(s3c64xx_iisv4_resource),
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.resource = s3c64xx_iisv4_resource,
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.dev = {
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.platform_data = &i2sv4_pdata,
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},
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};
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EXPORT_SYMBOL(s3c64xx_device_iisv4);
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/* PCM Controller platform_devices */
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static int s3c64xx_pcm_cfg_gpio(struct platform_device *pdev)
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{
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unsigned int base;
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switch (pdev->id) {
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case 0:
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base = S3C64XX_GPD(0);
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break;
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case 1:
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base = S3C64XX_GPE(0);
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break;
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default:
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printk(KERN_DEBUG "Invalid PCM Controller number: %d\n",
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pdev->id);
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return -EINVAL;
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}
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s3c_gpio_cfgpin_range(base, 5, S3C_GPIO_SFN(2));
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return 0;
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}
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static struct resource s3c64xx_pcm0_resource[] = {
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[0] = DEFINE_RES_MEM(S3C64XX_PA_PCM0, SZ_256),
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};
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static struct s3c_audio_pdata s3c_pcm0_pdata = {
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.cfg_gpio = s3c64xx_pcm_cfg_gpio,
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.dma_filter = pl08x_filter_id,
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.dma_capture = DMACH_PCM0_RX,
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.dma_playback = DMACH_PCM0_TX,
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};
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struct platform_device s3c64xx_device_pcm0 = {
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.name = "samsung-pcm",
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.id = 0,
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.num_resources = ARRAY_SIZE(s3c64xx_pcm0_resource),
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.resource = s3c64xx_pcm0_resource,
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.dev = {
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.platform_data = &s3c_pcm0_pdata,
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},
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};
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EXPORT_SYMBOL(s3c64xx_device_pcm0);
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static struct resource s3c64xx_pcm1_resource[] = {
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[0] = DEFINE_RES_MEM(S3C64XX_PA_PCM1, SZ_256),
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};
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static struct s3c_audio_pdata s3c_pcm1_pdata = {
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.cfg_gpio = s3c64xx_pcm_cfg_gpio,
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.dma_filter = pl08x_filter_id,
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.dma_playback = DMACH_PCM1_TX,
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.dma_capture = DMACH_PCM1_RX,
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};
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struct platform_device s3c64xx_device_pcm1 = {
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.name = "samsung-pcm",
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.id = 1,
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.num_resources = ARRAY_SIZE(s3c64xx_pcm1_resource),
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.resource = s3c64xx_pcm1_resource,
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.dev = {
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.platform_data = &s3c_pcm1_pdata,
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},
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};
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EXPORT_SYMBOL(s3c64xx_device_pcm1);
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/* AC97 Controller platform devices */
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static int s3c64xx_ac97_cfg_gpd(struct platform_device *pdev)
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{
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return s3c_gpio_cfgpin_range(S3C64XX_GPD(0), 5, S3C_GPIO_SFN(4));
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}
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static int s3c64xx_ac97_cfg_gpe(struct platform_device *pdev)
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{
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return s3c_gpio_cfgpin_range(S3C64XX_GPE(0), 5, S3C_GPIO_SFN(4));
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}
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static struct resource s3c64xx_ac97_resource[] = {
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[0] = DEFINE_RES_MEM(S3C64XX_PA_AC97, SZ_256),
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[1] = DEFINE_RES_IRQ(IRQ_AC97),
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};
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static struct s3c_audio_pdata s3c_ac97_pdata = {
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.dma_playback = DMACH_AC97_PCMOUT,
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.dma_filter = pl08x_filter_id,
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.dma_capture = DMACH_AC97_PCMIN,
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.dma_capture_mic = DMACH_AC97_MICIN,
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};
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static u64 s3c64xx_ac97_dmamask = DMA_BIT_MASK(32);
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struct platform_device s3c64xx_device_ac97 = {
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.name = "samsung-ac97",
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.id = -1,
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.num_resources = ARRAY_SIZE(s3c64xx_ac97_resource),
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.resource = s3c64xx_ac97_resource,
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.dev = {
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.platform_data = &s3c_ac97_pdata,
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.dma_mask = &s3c64xx_ac97_dmamask,
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.coherent_dma_mask = DMA_BIT_MASK(32),
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},
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};
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EXPORT_SYMBOL(s3c64xx_device_ac97);
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void __init s3c64xx_ac97_setup_gpio(int num)
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{
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if (num == S3C64XX_AC97_GPD)
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s3c_ac97_pdata.cfg_gpio = s3c64xx_ac97_cfg_gpd;
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else
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s3c_ac97_pdata.cfg_gpio = s3c64xx_ac97_cfg_gpe;
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}
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