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ARM: S3C64XX: Add S3C64XX support to the generic Samsung ADC driver 

Add S3C64XX support to the generic Samsung ADC driver

Signed-off-by: Maurus Cuelenaere <mcuelenaere@gmail.com>
Signed-off-by: Ben Dooks <ben-linux@fluff.org>
This commit is contained in:
Maurus Cuelenaere 2010-01-14 00:30:34 +01:00 committed by Ben Dooks
parent 3929e1e76d
commit bcedfa98d9
5 changed files with 79 additions and 2 deletions
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1
arch/arm/mach-s3c6400/include/mach/map.h
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@ -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)

3
arch/arm/plat-s3c/include/plat/regs-adc.h
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@ -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 */

4
arch/arm/plat-s3c64xx/Makefile
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@ -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

46
arch/arm/plat-s3c64xx/dev-adc.c Normal file
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@ -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,
};

27
arch/arm/plat-samsung/adc.c
View File

@ -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,