From: heiko@sntech•de (Heiko Stübner)
To: linux-arm-kernel@lists•infradead.org
Subject: [PATCH 7/7] s3c-adc: Add support for S3C2416/S3C2450
Date: Thu, 8 Sep 2011 21:57:25 +0200 [thread overview]
Message-ID: <201109082157.25585.heiko@sntech.de> (raw)
In-Reply-To: <201109082151.29076.heiko@sntech.de>
The ADC of the S3C2416/2450 SoC is 10 or 12 bit wide, has its
source selection in the register base+0x18 and its width
selection in bit 03 of the ADCCON register.
Signed-off-by: Heiko Stuebner <heiko@sntech•de>
---
arch/arm/mach-s3c2416/mach-smdk2416.c | 3 +++
arch/arm/plat-samsung/adc.c | 24 +++++++++++++++++++-----
2 files changed, 22 insertions(+), 5 deletions(-)
diff --git a/arch/arm/mach-s3c2416/mach-smdk2416.c b/arch/arm/mach-s3c2416/mach-smdk2416.c
index a9eee53..deddeb3 100644
--- a/arch/arm/mach-s3c2416/mach-smdk2416.c
+++ b/arch/arm/mach-s3c2416/mach-smdk2416.c
@@ -50,6 +50,7 @@
#include <plat/nand.h>
#include <plat/sdhci.h>
#include <plat/udc.h>
+#include <plat/adc-core.h>
#include <plat/regs-fb-v4.h>
#include <plat/fb.h>
@@ -225,6 +226,8 @@ static void __init smdk2416_machine_init(void)
s3c_i2c0_set_platdata(NULL);
s3c_fb_set_platdata(&smdk2416_fb_platdata);
+ s3c_adc_setname("s3c2416-adc");
+
s3c_sdhci0_set_platdata(&smdk2416_hsmmc0_pdata);
s3c_sdhci1_set_platdata(&smdk2416_hsmmc1_pdata);
diff --git a/arch/arm/plat-samsung/adc.c b/arch/arm/plat-samsung/adc.c
index 4fb26c6..a5a73a4 100644
--- a/arch/arm/plat-samsung/adc.c
+++ b/arch/arm/plat-samsung/adc.c
@@ -357,6 +357,7 @@ static int s3c_adc_probe(struct platform_device *pdev)
{
struct device *dev = &pdev->dev;
struct adc_device *adc;
+ int cpu = platform_get_device_id(pdev)->driver_data;
struct resource *regs;
int ret;
unsigned tmp;
@@ -420,9 +421,12 @@ static int s3c_adc_probe(struct platform_device *pdev)
clk_enable(adc->clk);
tmp = adc->prescale | S3C2410_ADCCON_PRSCEN;
- if (platform_get_device_id(pdev)->driver_data & S3C_ADC_QUIRK_12BIT) {
- /* Enable 12-bit ADC resolution */
- tmp |= S3C64XX_ADCCON_RESSEL;
+ /* Enable 12-bit ADC resolution */
+ if (cpu & S3C_ADC_QUIRK_12BIT) {
+ if (cpu & S3C_ADC_QUIRK_RESSEL03)
+ tmp |= S3C2416_ADCCON_RESSEL;
+ else
+ tmp |= S3C64XX_ADCCON_RESSEL;
}
writel(tmp, adc->regs + S3C2410_ADCCON);
@@ -490,6 +494,7 @@ static int s3c_adc_resume(struct device *dev)
struct platform_device *pdev = container_of(dev,
struct platform_device, dev);
struct adc_device *adc = platform_get_drvdata(pdev);
+ int cpu = platform_get_device_id(pdev)->driver_data;
int ret;
unsigned long tmp;
@@ -501,8 +506,12 @@ static int s3c_adc_resume(struct device *dev)
tmp = adc->prescale | S3C2410_ADCCON_PRSCEN;
/* Enable 12-bit ADC resolution */
- if (platform_get_device_id(pdev)->driver_data & S3C_ADC_QUIRK_12BIT)
- tmp |= S3C64XX_ADCCON_RESSEL;
+ if (cpu & S3C_ADC_QUIRK_12BIT) {
+ if (cpu & S3C_ADC_QUIRK_RESSEL03)
+ tmp |= S3C2416_ADCCON_RESSEL;
+ else
+ tmp |= S3C64XX_ADCCON_RESSEL;
+ }
writel(tmp, adc->regs + S3C2410_ADCCON);
return 0;
@@ -523,6 +532,11 @@ static struct platform_device_id s3c_adc_driver_ids[] = {
.driver_data = S3C_ADC_QUIRK_10BIT |
S3C_ADC_QUIRK_MUX18,
}, {
+ .name = "s3c2416-adc",
+ .driver_data = S3C_ADC_QUIRK_12BIT |
+ S3C_ADC_QUIRK_MUX18 |
+ S3C_ADC_QUIRK_RESSEL03,
+ }, {
.name = "s3c64xx-adc",
.driver_data = S3C_ADC_QUIRK_12BIT |
S3C_ADC_QUIRK_MUXADCCON |
--
1.7.2.3
prev parent reply other threads:[~2011-09-08 19:57 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-09-08 19:51 [PATCH 0/7] S3C2443/S3C2416: Implement support for ADC Heiko Stübner
2011-09-08 19:52 ` [PATCH 1/7] S3C2443/S3C2416: Add adc registers Heiko Stübner
2011-09-08 19:53 ` [PATCH 2/7] s3c-adc: describe features via quirk constants Heiko Stübner
2011-09-08 19:54 ` [PATCH 3/7] s3c-adc: Replace TYPE_ADCVx conditionals with quirks Heiko Stübner
2011-09-08 19:54 ` [PATCH 4/7] s3c-adc: Fix mux bit modification in s3c_adc_select Heiko Stübner
2011-09-08 19:55 ` [PATCH 5/7] S3C24XX: Allow overriding of adc device name Heiko Stübner
2011-09-08 19:56 ` [PATCH 6/7] s3c-adc: Add support for S3C2443 Heiko Stübner
2011-09-08 19:57 ` Heiko Stübner [this message]
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