ARM: S3C64XX: Add AC97 platform resources

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>

3 files changed, 89 insertions, 0 deletions

diff --git a/arch/arm/mach-s3c64xx/dev-audio.c b/arch/arm/mach-s3c64xx/dev-audio.c
index aaffb8066707..c3e9e73bd0f9 100644
--- a/arch/arm/mach-s3c64xx/dev-audio.c
+++ b/arch/arm/mach-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>
@@ -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;
+}
diff --git a/arch/arm/plat-samsung/include/plat/audio.h b/arch/arm/plat-samsung/include/plat/audio.h
index da561da2154f..e32f9edfd4b7 100644
--- a/arch/arm/plat-samsung/include/plat/audio.h
+++ b/arch/arm/plat-samsung/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-samsung/include/plat/devs.h b/arch/arm/plat-samsung/include/plat/devs.h
index 0597ffae0cfc..796d24258313 100644
--- a/arch/arm/plat-samsung/include/plat/devs.h
+++ b/arch/arm/plat-samsung/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;