Add S3C64XX support to the generic Samsung ADC driver
Signed-off-by: Maurus Cuelenaere <mcuelenaere@xxxxxxxxx>
---
arch/arm/mach-s3c6400/include/mach/map.h | 1 +
arch/arm/plat-s3c/include/plat/regs-adc.h | 3 ++
arch/arm/plat-s3c64xx/Makefile | 4 ++
arch/arm/plat-s3c64xx/dev-adc.c | 46 +++++++++++++++++++++++++++++
arch/arm/plat-samsung/adc.c | 27 +++++++++++++++-
5 files changed, 79 insertions(+), 2 deletions(-)
create mode 100644 arch/arm/plat-s3c64xx/dev-adc.c
diff --git a/arch/arm/mach-s3c6400/include/mach/map.h
b/arch/arm/mach-s3c6400/include/mach/map.h
index d4cd3ab..5a35f24 100644
--- a/arch/arm/mach-s3c6400/include/mach/map.h
+++ b/arch/arm/mach-s3c6400/include/mach/map.h
@@ -42,6 +42,7 @@
#define S3C64XX_PA_FB (0x77100000)
#define S3C64XX_PA_USB_HSOTG (0x7C000000)
#define S3C64XX_PA_WATCHDOG (0x7E004000)
+#define S3C64XX_PA_ADC (0x7E00B000)
#define S3C64XX_PA_SYSCON (0x7E00F000)
#define S3C64XX_PA_AC97 (0x7F001000)
#define S3C64XX_PA_IIS0 (0x7F002000)
diff --git a/arch/arm/plat-s3c/include/plat/regs-adc.h
b/arch/arm/plat-s3c/include/plat/regs-adc.h
index 4323ccc..f43c8da 100644
--- a/arch/arm/plat-s3c/include/plat/regs-adc.h
+++ b/arch/arm/plat-s3c/include/plat/regs-adc.h
@@ -19,6 +19,9 @@
#define S3C2410_ADCDLY S3C2410_ADCREG(0x08)
#define S3C2410_ADCDAT0 S3C2410_ADCREG(0x0C)
#define S3C2410_ADCDAT1 S3C2410_ADCREG(0x10)
+#define S3C64XX_ADCUPDN S3C2410_ADCREG(0x14)
+#define S3C64XX_ADCCLRINT S3C2410_ADCREG(0x18)
+#define S3C64XX_ADCCLRINTPNDNUP S3C2410_ADCREG(0x20)
/* ADCCON Register Bits */
diff --git a/arch/arm/plat-s3c64xx/Makefile b/arch/arm/plat-s3c64xx/Makefile
index b85b435..8060017 100644
--- a/arch/arm/plat-s3c64xx/Makefile
+++ b/arch/arm/plat-s3c64xx/Makefile
@@ -35,6 +35,10 @@ obj-$(CONFIG_PM) += irq-pm.o
obj-$(CONFIG_S3C64XX_DMA) += dma.o
+# ADC support
+
+obj-$(CONFIG_S3C_ADC) += dev-adc.o
+
# Device setup
obj-$(CONFIG_S3C64XX_SETUP_I2C0) += setup-i2c0.o
diff --git a/arch/arm/plat-s3c64xx/dev-adc.c b/arch/arm/plat-s3c64xx/dev-adc.c
new file mode 100644
index 0000000..fafef9b
--- /dev/null
+++ b/arch/arm/plat-s3c64xx/dev-adc.c
@@ -0,0 +1,46 @@
+/* linux/arch/arm/plat-s3c64xx/dev-adc.c
+ *
+ * Copyright 2010 Maurus Cuelenaere
+ *
+ * S3C64xx series device definition for ADC device
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+*/
+
+#include <linux/kernel.h>
+#include <linux/string.h>
+#include <linux/platform_device.h>
+
+#include <mach/irqs.h>
+#include <mach/map.h>
+
+#include <plat/adc.h>
+#include <plat/devs.h>
+#include <plat/cpu.h>
+
+static struct resource s3c_adc_resource[] = {
+ [0] = {
+ .start = S3C64XX_PA_ADC,
+ .end = S3C64XX_PA_ADC + SZ_256 - 1,
+ .flags = IORESOURCE_MEM,
+ },
+ [1] = {
+ .start = IRQ_TC,
+ .end = IRQ_TC,
+ .flags = IORESOURCE_IRQ,
+ },
+ [2] = {
+ .start = IRQ_ADC,
+ .end = IRQ_ADC,
+ .flags = IORESOURCE_IRQ,
+ },
+};
+
+struct platform_device s3c_device_adc = {
+ .name = "s3c64xx-adc",
+ .id = -1,
+ .num_resources = ARRAY_SIZE(s3c_adc_resource),
+ .resource = s3c_adc_resource,
+};
diff --git a/arch/arm/plat-samsung/adc.c b/arch/arm/plat-samsung/adc.c
index a8843dd..120b790 100644
--- a/arch/arm/plat-samsung/adc.c
+++ b/arch/arm/plat-samsung/adc.c
@@ -37,6 +37,11 @@
* action is required.
*/
+enum s3c_cpu_type {
+ TYPE_S3C24XX,
+ TYPE_S3C64XX
+};
+
struct s3c_adc_client {
struct platform_device *pdev;
struct list_head pend;
@@ -262,7 +267,7 @@ static irqreturn_t s3c_adc_irq(int irq, void *pw)
if (!client) {
dev_warn(&adc->pdev->dev, "%s: no adc pending\n", __func__);
- return IRQ_HANDLED;
+ goto exit;
}
data0 = readl(adc->regs + S3C2410_ADCDAT0);
@@ -289,6 +294,11 @@ static irqreturn_t s3c_adc_irq(int irq, void *pw)
local_irq_restore(flags);
}
+exit:
+ if (platform_get_device_id(client->pdev)->driver_data == TYPE_S3C64XX) {
+ /* Clear ADC interrupt */
+ writel(0, adc->regs + S3C64XX_ADCCLRINT);
+ }
return IRQ_HANDLED;
}
@@ -410,9 +420,22 @@ static int s3c_adc_resume(struct platform_device *pdev)
#define s3c_adc_resume NULL
#endif
+static struct platform_device_id s3c_adc_driver_ids[] = {
+ {
+ .name = "s3c24xx-adc",
+ .driver_data = TYPE_S3C24XX,
+ }, {
+ .name = "s3c64xx-adc",
+ .driver_data = TYPE_S3C64XX,
+ },
+ { }
+};
+MODULE_DEVICE_TABLE(platform, s3c_adc_driver_ids);
+
static struct platform_driver s3c_adc_driver = {
+ .id_table = s3c_adc_driver_ids,
.driver = {
- .name = "s3c24xx-adc",
+ .name = "s3c-adc",
.owner = THIS_MODULE,
},
.probe = s3c_adc_probe,
--
1.6.6
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