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| author | Miquel Raynal <miquel.raynal@bootlin.com> | 2019-11-17 18:34:01 +0100 |
|---|---|---|
| committer | Miquel Raynal <miquel.raynal@bootlin.com> | 2019-11-17 18:34:01 +0100 |
| commit | 8389a7b909f252e74ea92b2794de8d660cfee96e (patch) | |
| tree | a947f3080e953e4a44417389b3f2b69d4817be2e /drivers/iio/adc/axp288_adc.c | |
| parent | ad39b5a1ed68032292794b41a5f9e41ea69f8052 (diff) | |
| parent | 83cba933a6db1dd4d7ac85170f99461fbc339eff (diff) | |
Merge tag 'spi-nor/for-5.5' into mtd/next
SPI NOR core changes:
- introduce 'struct spi_nor_controller_ops',
- clean the Register Operations methods,
- use dev_dbg insted of dev_err for low level info,
- fix retlen handling in sst_write(),
- fix silent truncations in spi_nor_read and spi_nor_read_raw(),
- fix the clearing of QE bit on lock()/unlock(),
- rework the disabling of the block write protection,
- rework the Quad Enable methods,
- make sure nor->spimem and nor->controller_ops are mutually exclusive,
- set default Quad Enable method for ISSI flashes,
- add support for few flashes.
SPI NOR controller drivers changes:
- intel-spi:
- support chips without software sequencer,
- add support for Intel Cannon Lake and Intel Comet Lake-H flashes.
Diffstat (limited to 'drivers/iio/adc/axp288_adc.c')
| -rw-r--r-- | drivers/iio/adc/axp288_adc.c | 32 |
1 files changed, 32 insertions, 0 deletions
diff --git a/drivers/iio/adc/axp288_adc.c b/drivers/iio/adc/axp288_adc.c index adc9cf7a075d..8ea2aed6d6f5 100644 --- a/drivers/iio/adc/axp288_adc.c +++ b/drivers/iio/adc/axp288_adc.c @@ -7,6 +7,7 @@ * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ */ +#include <linux/dmi.h> #include <linux/module.h> #include <linux/kernel.h> #include <linux/device.h> @@ -25,6 +26,11 @@ #define AXP288_ADC_EN_MASK 0xF0 #define AXP288_ADC_TS_ENABLE 0x01 +#define AXP288_ADC_TS_BIAS_MASK GENMASK(5, 4) +#define AXP288_ADC_TS_BIAS_20UA (0 << 4) +#define AXP288_ADC_TS_BIAS_40UA (1 << 4) +#define AXP288_ADC_TS_BIAS_60UA (2 << 4) +#define AXP288_ADC_TS_BIAS_80UA (3 << 4) #define AXP288_ADC_TS_CURRENT_ON_OFF_MASK GENMASK(1, 0) #define AXP288_ADC_TS_CURRENT_OFF (0 << 0) #define AXP288_ADC_TS_CURRENT_ON_WHEN_CHARGING (1 << 0) @@ -177,10 +183,36 @@ static int axp288_adc_read_raw(struct iio_dev *indio_dev, return ret; } +/* + * We rely on the machine's firmware to correctly setup the TS pin bias current + * at boot. This lists systems with broken fw where we need to set it ourselves. + */ +static const struct dmi_system_id axp288_adc_ts_bias_override[] = { + { + /* Lenovo Ideapad 100S (11 inch) */ + .matches = { + DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"), + DMI_MATCH(DMI_PRODUCT_VERSION, "Lenovo ideapad 100S-11IBY"), + }, + .driver_data = (void *)(uintptr_t)AXP288_ADC_TS_BIAS_80UA, + }, + {} +}; + static int axp288_adc_initialize(struct axp288_adc_info *info) { + const struct dmi_system_id *bias_override; int ret, adc_enable_val; + bias_override = dmi_first_match(axp288_adc_ts_bias_override); + if (bias_override) { + ret = regmap_update_bits(info->regmap, AXP288_ADC_TS_PIN_CTRL, + AXP288_ADC_TS_BIAS_MASK, + (uintptr_t)bias_override->driver_data); + if (ret) + return ret; + } + /* * Determine if the TS pin is enabled and set the TS current-source * accordingly. |