[PATCH 07/10] MACH/Samsung/Mini2440: add hwmon capabilities to mini2440

[Juergen Beisert]

This adds the internal 8 ADC channels to the sysfs. They can be reached via:

 /sys/devices/platform/s3c24xx-adc/s3c-hwmon

Signed-off-by: Juergen Beisert <jbe at pengutronix.de>
---
 arch/arm/mach-s3c24xx/Kconfig         |    1 +
 arch/arm/mach-s3c24xx/mach-mini2440.c |   50 +++++++++++++++++++++++++++++++++
 2 files changed, 51 insertions(+)

diff --git a/arch/arm/mach-s3c24xx/Kconfig b/arch/arm/mach-s3c24xx/Kconfig
index 0e65445..4f42b7e 100644
--- a/arch/arm/mach-s3c24xx/Kconfig
+++ b/arch/arm/mach-s3c24xx/Kconfig
@@ -406,6 +406,7 @@ config MACH_MINI2440
 	select S3C_DEV_NAND
 	select S3C_DEV_USB_HOST
 	select TOUCHSCREEN_S3C2410
+	select S3C_DEV_HWMON
 	help
 	  Say Y here to select support for the MINI2440. Is a 10cm x 10cm board
 	  available via various sources. It can come with a 3.5" or 7" touch LCD.
diff --git a/arch/arm/mach-s3c24xx/mach-mini2440.c b/arch/arm/mach-s3c24xx/mach-mini2440.c
index fd5fe9d..36149ed 100644
--- a/arch/arm/mach-s3c24xx/mach-mini2440.c
+++ b/arch/arm/mach-s3c24xx/mach-mini2440.c
@@ -57,6 +57,7 @@
 #include <plat/clock.h>
 #include <plat/devs.h>
 #include <plat/cpu.h>
+#include <plat/hwmon.h>
 
 #include <sound/s3c24xx_uda134x.h>
 
@@ -548,6 +549,53 @@ static struct s3c2410_ts_mach_info mini2440_ts_cfg __initdata = {
 	.oversampling_shift = 0,
 };
 
+static struct s3c_hwmon_chcfg mini2440_adc_chcfg[8] = {
+	{
+		.name = "AIN0",	/* connected to CON4/5 and W1 */
+		.mult = 3300,
+		.div = 1023,
+	}, {
+		.name = "AIN1",	/* connected to CON4/6 */
+		.mult = 3300,
+		.div = 1023,
+	}, {
+		.name = "AIN2",	/* connected to CON4/7 */
+		.mult = 3300,
+		.div = 1023,
+	}, {
+		.name = "AIN3",	/* connected to CON4/8 */
+		.mult = 3300,
+		.div = 1023,
+	}, {
+		.name = "TSYM",
+		.mult = 3300,
+		.div = 1023,
+	}, {
+		.name = "TSYP",
+		.mult = 3300,
+		.div = 1023,
+	}, {
+		.name = "TSXM",
+		.mult = 3300,
+		.div = 1023,
+	}, {
+		.name = "TSXP",
+		.mult = 3300,
+		.div = 1023,
+	},
+};
+
+static struct s3c_hwmon_pdata mini2440_adc __initdata = {
+	.in[0] = &mini2440_adc_chcfg[0],
+	.in[1] = &mini2440_adc_chcfg[1],
+	.in[2] = &mini2440_adc_chcfg[2],
+	.in[3] = &mini2440_adc_chcfg[3],
+	.in[4] = &mini2440_adc_chcfg[4],
+	.in[5] = &mini2440_adc_chcfg[5],
+	.in[6] = &mini2440_adc_chcfg[6],
+	.in[7] = &mini2440_adc_chcfg[7],
+};
+
 static struct platform_device *mini2440_devices[] __initdata = {
 	&s3c_device_ohci,
 	&s3c_device_wdt,
@@ -564,6 +612,7 @@ static struct platform_device *mini2440_devices[] __initdata = {
 	&mini2440_audio,
 	&samsung_asoc_dma,
 	&s3c_device_adc,
+	&s3c_device_hwmon,
 };
 
 static void __init mini2440_map_io(void)
@@ -721,6 +770,7 @@ static void __init mini2440_init(void)
 	s3c_nand_set_platdata(&mini2440_nand_info);
 	s3c_i2c0_set_platdata(NULL);
 	s3c24xx_ts_set_platdata(&mini2440_ts_cfg);
+	s3c_hwmon_set_platdata(&mini2440_adc);
 
 	i2c_register_board_info(0, mini2440_i2c_devs,
 				ARRAY_SIZE(mini2440_i2c_devs));
-- 
1.7.10