s5pc210: universal: turn on/off ADC LDO once

Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>

diff --git a/board/samsung/universal_c210/universal.c b/board/samsung/universal_c210/universal.c
index cd6cbe8..69d243a 100644 (file)
--- a/board/samsung/universal_c210/universal.c
+++ b/board/samsung/universal_c210/universal.c
@@ -341,13 +341,8 @@ static unsigned short get_adc_value(int channel)
        struct s5pc210_adc *adc = (struct s5pc210_adc *) S5PC210_ADC_BASE;
        unsigned short ret = 0;
        unsigned int reg;
-       int ldonum = 4;
-       char buf[64];
        unsigned int loop = 0;
 
-       sprintf(buf, "pmic ldo %d on", ldonum);
-       run_command(buf, 0);
-
        writel(channel & 0xF, &adc->adcmux);
        writel((1 << 14) | (49 << 6), &adc->adccon);
        writel(1000 & 0xffff, &adc->adcdly);
@@ -362,8 +357,6 @@ static unsigned short get_adc_value(int channel)
        } while (!(reg & (1 << 15)) && (loop++ < 1000));
 
        ret = readl(&adc->adcdat0) & 0xFFF;
-       sprintf(buf, "pmic ldo %d off", ldonum);
-       run_command(buf, 0);
 
        return ret;
 }
@@ -372,9 +365,13 @@ static unsigned int get_hw_revision(void)
 {
        int hwrev = 0, mode0, mode1;
 
+       run_command("pmic ldo 4 on", 0);
+
        mode0 = get_adc_value(1);               /* HWREV_MODE0 */
        mode1 = get_adc_value(2);               /* HWREV_MODE1 */
 
+       run_command("pmic ldo 4 off", 0);
+
 #define IS_RANGE(x, min, max)  ((x) > (min) && (x) < (max))
        if (IS_RANGE(mode0, 80, 100) && IS_RANGE(mode1, 80, 100))
                hwrev = 0x0;