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| author | Lars-Peter Clausen <lars@metafoo.de> | 2010-07-12 03:48:08 +0200 |
|---|---|---|
| committer | Samuel Ortiz <sameo@linux.intel.com> | 2010-08-12 11:27:58 +0200 |
| commit | 91f4debf5e2df904e7fade530bd1a6d182efd72c (patch) | |
| tree | 263ca3ab3ca3a52e011c4500f9afc051190ad023 /include/linux/jz4740-adc.h | |
| parent | b12c35e22d102172cd2a69581f939ec9a70a7942 (diff) | |
| download | lwn-91f4debf5e2df904e7fade530bd1a6d182efd72c.tar.gz lwn-91f4debf5e2df904e7fade530bd1a6d182efd72c.zip | |
mfd: Add JZ4740 ADC driver
This patch adds a MFD driver for the JZ4740 ADC unit. The driver is used to
demultiplex IRQs and synchronize access to shared registers between the
battery, hwmon and (future) touchscreen driver.
Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
Diffstat (limited to 'include/linux/jz4740-adc.h')
| -rw-r--r-- | include/linux/jz4740-adc.h | 32 |
1 files changed, 32 insertions, 0 deletions
diff --git a/include/linux/jz4740-adc.h b/include/linux/jz4740-adc.h new file mode 100644 index 000000000000..9053f95e9687 --- /dev/null +++ b/include/linux/jz4740-adc.h @@ -0,0 +1,32 @@ + +#ifndef __LINUX_JZ4740_ADC +#define __LINUX_JZ4740_ADC + +#include <linux/device.h> + +/* + * jz4740_adc_set_config - Configure a JZ4740 adc device + * @dev: Pointer to a jz4740-adc device + * @mask: Mask for the config value to be set + * @val: Value to be set + * + * This function can be used by the JZ4740 ADC mfd cells to configure their + * options in the shared config register. +*/ +int jz4740_adc_set_config(struct device *dev, uint32_t mask, uint32_t val); + +#define JZ_ADC_CONFIG_SPZZ BIT(31) +#define JZ_ADC_CONFIG_EX_IN BIT(30) +#define JZ_ADC_CONFIG_DNUM_MASK (0x7 << 16) +#define JZ_ADC_CONFIG_DMA_ENABLE BIT(15) +#define JZ_ADC_CONFIG_XYZ_MASK (0x2 << 13) +#define JZ_ADC_CONFIG_SAMPLE_NUM_MASK (0x7 << 10) +#define JZ_ADC_CONFIG_CLKDIV_MASK (0xf << 5) +#define JZ_ADC_CONFIG_BAT_MB BIT(4) + +#define JZ_ADC_CONFIG_DNUM(dnum) ((dnum) << 16) +#define JZ_ADC_CONFIG_XYZ_OFFSET(dnum) ((xyz) << 13) +#define JZ_ADC_CONFIG_SAMPLE_NUM(x) ((x) << 10) +#define JZ_ADC_CONFIG_CLKDIV(div) ((div) << 5) + +#endif |