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ARM: S3C64XX: Add AC97 platform resources

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This patch defines the platform device and the resources: IRQ, DMA and MEM,
needed by the AC97 controller driver.

Signed-off-by: Jassi Brar <jassi.brar@samsung.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Ben Dooks <ben-linux@fluff.org>
This commit is contained in:
Jassi Brar 2010-02-12 10:38:51 +00:00 committed by Ben Dooks
parent 1f1008684a
commit de6985be18
3 changed files with 89 additions and 0 deletions
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78
arch/arm/mach-s3c64xx/dev-audio.c
View File

@ -11,6 +11,7 @@
#include <linux/kernel.h>
#include <linux/string.h>
#include <linux/platform_device.h>
#include <linux/dma-mapping.h>
#include <mach/irqs.h>
#include <mach/map.h>
@ -255,3 +256,80 @@ struct platform_device s3c64xx_device_pcm1 = {
},
};
EXPORT_SYMBOL(s3c64xx_device_pcm1);
/* AC97 Controller platform devices */
static int s3c64xx_ac97_cfg_gpd(struct platform_device *pdev)
{
s3c_gpio_cfgpin(S3C64XX_GPD(0), S3C64XX_GPD0_AC97_BITCLK);
s3c_gpio_cfgpin(S3C64XX_GPD(1), S3C64XX_GPD1_AC97_nRESET);
s3c_gpio_cfgpin(S3C64XX_GPD(2), S3C64XX_GPD2_AC97_SYNC);
s3c_gpio_cfgpin(S3C64XX_GPD(3), S3C64XX_GPD3_AC97_SDI);
s3c_gpio_cfgpin(S3C64XX_GPD(4), S3C64XX_GPD4_AC97_SDO);
return 0;
}
static int s3c64xx_ac97_cfg_gpe(struct platform_device *pdev)
{
s3c_gpio_cfgpin(S3C64XX_GPE(0), S3C64XX_GPE0_AC97_BITCLK);
s3c_gpio_cfgpin(S3C64XX_GPE(1), S3C64XX_GPE1_AC97_nRESET);
s3c_gpio_cfgpin(S3C64XX_GPE(2), S3C64XX_GPE2_AC97_SYNC);
s3c_gpio_cfgpin(S3C64XX_GPE(3), S3C64XX_GPE3_AC97_SDI);
s3c_gpio_cfgpin(S3C64XX_GPE(4), S3C64XX_GPE4_AC97_SDO);
return 0;
}
static struct resource s3c64xx_ac97_resource[] = {
[0] = {
.start = S3C64XX_PA_AC97,
.end = S3C64XX_PA_AC97 + 0x100 - 1,
.flags = IORESOURCE_MEM,
},
[1] = {
.start = DMACH_AC97_PCMOUT,
.end = DMACH_AC97_PCMOUT,
.flags = IORESOURCE_DMA,
},
[2] = {
.start = DMACH_AC97_PCMIN,
.end = DMACH_AC97_PCMIN,
.flags = IORESOURCE_DMA,
},
[3] = {
.start = DMACH_AC97_MICIN,
.end = DMACH_AC97_MICIN,
.flags = IORESOURCE_DMA,
},
[4] = {
.start = IRQ_AC97,
.end = IRQ_AC97,
.flags = IORESOURCE_IRQ,
},
};
static struct s3c_audio_pdata s3c_ac97_pdata;
static u64 s3c64xx_ac97_dmamask = DMA_BIT_MASK(32);
struct platform_device s3c64xx_device_ac97 = {
.name = "s3c-ac97",
.id = -1,
.num_resources = ARRAY_SIZE(s3c64xx_ac97_resource),
.resource = s3c64xx_ac97_resource,
.dev = {
.platform_data = &s3c_ac97_pdata,
.dma_mask = &s3c64xx_ac97_dmamask,
.coherent_dma_mask = DMA_BIT_MASK(32),
},
};
EXPORT_SYMBOL(s3c64xx_device_ac97);
void __init s3c64xx_ac97_setup_gpio(int num)
{
if (num == S3C64XX_AC97_GPD)
s3c_ac97_pdata.cfg_gpio = s3c64xx_ac97_cfg_gpd;
else
s3c_ac97_pdata.cfg_gpio = s3c64xx_ac97_cfg_gpe;
}

8
arch/arm/plat-samsung/include/plat/audio.h
View File

@ -8,6 +8,14 @@
* published by the Free Software Foundation.
*/
/* The machine init code calls s3c*_ac97_setup_gpio with
* one of these defines in order to select appropriate bank
* of GPIO for AC97 pins
*/
#define S3C64XX_AC97_GPD 0
#define S3C64XX_AC97_GPE 1
extern void s3c64xx_ac97_setup_gpio(int);
/**
* struct s3c_audio_pdata - common platform data for audio device drivers
* @cfg_gpio: Callback function to setup mux'ed pins in I2S/PCM/AC97 mode

3
arch/arm/plat-samsung/include/plat/devs.h
View File

@ -35,7 +35,10 @@ extern struct platform_device s3c64xx_device_spi1;
extern struct platform_device s3c64xx_device_pcm0;
extern struct platform_device s3c64xx_device_pcm1;
extern struct platform_device s3c64xx_device_ac97;
extern struct platform_device s3c_device_ts;
extern struct platform_device s3c_device_fb;
extern struct platform_device s3c_device_ohci;
extern struct platform_device s3c_device_lcd;