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Diffstat (limited to 'arch/arm/plat-samsung/adc.c')
-rw-r--r--arch/arm/plat-samsung/adc.c43
1 files changed, 32 insertions, 11 deletions
diff --git a/arch/arm/plat-samsung/adc.c b/arch/arm/plat-samsung/adc.c
index ee8deef19481..33ecd0c9f0c3 100644
--- a/arch/arm/plat-samsung/adc.c
+++ b/arch/arm/plat-samsung/adc.c
@@ -41,6 +41,8 @@
enum s3c_cpu_type {
TYPE_ADCV1, /* S3C24XX */
+ TYPE_ADCV11, /* S3C2443 */
+ TYPE_ADCV12, /* S3C2416, S3C2450 */
TYPE_ADCV2, /* S3C64XX, S5P64X0, S5PC100 */
TYPE_ADCV3, /* S5PV210, S5PC110, EXYNOS4210 */
};
@@ -98,13 +100,17 @@ static inline void s3c_adc_select(struct adc_device *adc,
client->select_cb(client, 1);
- con &= ~S3C2410_ADCCON_MUXMASK;
+ if (cpu == TYPE_ADCV1 || cpu == TYPE_ADCV2)
+ con &= ~S3C2410_ADCCON_MUXMASK;
con &= ~S3C2410_ADCCON_STDBM;
con &= ~S3C2410_ADCCON_STARTMASK;
if (!client->is_ts) {
if (cpu == TYPE_ADCV3)
writel(client->channel & 0xf, adc->regs + S5P_ADCMUX);
+ else if (cpu == TYPE_ADCV11 || cpu == TYPE_ADCV12)
+ writel(client->channel & 0xf,
+ adc->regs + S3C2443_ADCMUX);
else
con |= S3C2410_ADCCON_SELMUX(client->channel);
}
@@ -293,13 +299,13 @@ static irqreturn_t s3c_adc_irq(int irq, void *pw)
client->nr_samples--;
- if (cpu != TYPE_ADCV1) {
- /* S3C64XX/S5P ADC resolution is 12-bit */
- data0 &= 0xfff;
- data1 &= 0xfff;
- } else {
+ if (cpu == TYPE_ADCV1 || cpu == TYPE_ADCV11) {
data0 &= 0x3ff;
data1 &= 0x3ff;
+ } else {
+ /* S3C2416/S3C64XX/S5P ADC resolution is 12-bit */
+ data0 &= 0xfff;
+ data1 &= 0xfff;
}
if (client->convert_cb)
@@ -320,7 +326,7 @@ static irqreturn_t s3c_adc_irq(int irq, void *pw)
}
exit:
- if (cpu != TYPE_ADCV1) {
+ if (cpu == TYPE_ADCV2 || cpu == TYPE_ADCV3) {
/* Clear ADC interrupt */
writel(0, adc->regs + S3C64XX_ADCCLRINT);
}
@@ -332,6 +338,7 @@ static int s3c_adc_probe(struct platform_device *pdev)
struct device *dev = &pdev->dev;
struct adc_device *adc;
struct resource *regs;
+ enum s3c_cpu_type cpu = platform_get_device_id(pdev)->driver_data;
int ret;
unsigned tmp;
@@ -394,10 +401,13 @@ 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 != TYPE_ADCV1) {
- /* Enable 12-bit ADC resolution */
+
+ /* Enable 12-bit ADC resolution */
+ if (cpu == TYPE_ADCV12)
+ tmp |= S3C2416_ADCCON_RESSEL;
+ if (cpu == TYPE_ADCV2 || cpu == TYPE_ADCV3)
tmp |= S3C64XX_ADCCON_RESSEL;
- }
+
writel(tmp, adc->regs + S3C2410_ADCCON);
dev_info(dev, "attached adc driver\n");
@@ -464,6 +474,7 @@ 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);
+ enum s3c_cpu_type cpu = platform_get_device_id(pdev)->driver_data;
int ret;
unsigned long tmp;
@@ -474,9 +485,13 @@ static int s3c_adc_resume(struct device *dev)
enable_irq(adc->irq);
tmp = adc->prescale | S3C2410_ADCCON_PRSCEN;
+
/* Enable 12-bit ADC resolution */
- if (platform_get_device_id(pdev)->driver_data != TYPE_ADCV1)
+ if (cpu == TYPE_ADCV12)
+ tmp |= S3C2416_ADCCON_RESSEL;
+ if (cpu == TYPE_ADCV2 || cpu == TYPE_ADCV3)
tmp |= S3C64XX_ADCCON_RESSEL;
+
writel(tmp, adc->regs + S3C2410_ADCCON);
return 0;
@@ -492,6 +507,12 @@ static struct platform_device_id s3c_adc_driver_ids[] = {
.name = "s3c24xx-adc",
.driver_data = TYPE_ADCV1,
}, {
+ .name = "s3c2443-adc",
+ .driver_data = TYPE_ADCV11,
+ }, {
+ .name = "s3c2416-adc",
+ .driver_data = TYPE_ADCV12,
+ }, {
.name = "s3c64xx-adc",
.driver_data = TYPE_ADCV2,
}, {