From: Jassi Brar jassi.brar@samsung.com

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 --- arch/arm/plat-s3c/include/plat/audio.h | 8 +++ arch/arm/plat-s3c/include/plat/devs.h | 3 + arch/arm/plat-s3c64xx/dev-audio.c | 78 ++++++++++++++++++++++++++++++++ 3 files changed, 89 insertions(+), 0 deletions(-)

diff --git a/arch/arm/plat-s3c/include/plat/audio.h b/arch/arm/plat-s3c/include/plat/audio.h index f22d23b..e07c941 100644 --- a/arch/arm/plat-s3c/include/plat/audio.h +++ b/arch/arm/plat-s3c/include/plat/audio.h @@ -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 diff --git a/arch/arm/plat-s3c/include/plat/devs.h b/arch/arm/plat-s3c/include/plat/devs.h index c6f9b73..65317eb 100644 --- a/arch/arm/plat-s3c/include/plat/devs.h +++ b/arch/arm/plat-s3c/include/plat/devs.h @@ -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; diff --git a/arch/arm/plat-s3c64xx/dev-audio.c b/arch/arm/plat-s3c64xx/dev-audio.c index f6b7bfb..63088b7 100644 --- a/arch/arm/plat-s3c64xx/dev-audio.c +++ b/arch/arm/plat-s3c64xx/dev-audio.c @@ -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> @@ -254,3 +255,80 @@ 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; +}