From: broonie@opensource.wolfsonmicro.com (Mark Brown)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH 3/5] ARM: S3C64XX: Add AC97 platform resources
Date: Fri, 12 Feb 2010 10:38:51 +0000 [thread overview]
Message-ID: <1265971133-17610-3-git-send-email-broonie@opensource.wolfsonmicro.com> (raw)
In-Reply-To: <1265971133-17610-1-git-send-email-broonie@opensource.wolfsonmicro.com>
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>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.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;
+}
--
1.6.6.1
next prev parent reply other threads:[~2010-02-12 10:38 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-02-12 10:38 [PATCH 1/5] ARM: SMDK64XX: Enable AC97 device Mark Brown
2010-02-12 10:38 ` [PATCH 2/5] ARM: SMDK2443: " Mark Brown
2010-02-12 10:38 ` Mark Brown [this message]
2010-02-12 10:38 ` [PATCH 4/5] ARM: S3C2443: GPIO: Correct AC97 pin defines Mark Brown
2010-02-12 10:38 ` [PATCH 5/5] ARM: SMDK6410: Fix modular build of AC97 audio driver Mark Brown
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