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Commit 08bbc4fc authored by Linus Torvalds's avatar Linus Torvalds
Browse files

Merge tag 'staging-4.14-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging 

Pull staging/IIO fixes from Greg KH:
 "Here are some small staging/IIO driver fixes for 4.14-rc4

  Most of these have been in my tree for a while due to travels, sorry
  for the delay. They resolve a number of small issues reported by
  people, mostly for the iio drivers. Nothing major in here, full
  details are in the shortlog.

  All have been linux-next for a few weeks with no reported issues"

* tag 'staging-4.14-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging: (23 commits)
  staging: iio: ad7192: Fix - use the dedicated reset function avoiding dma from stack.
  iio: core: Return error for failed read_reg
  iio: ad7793: Fix the serial interface reset
  iio: ad_sigma_delta: Implement a dedicated reset function
  IIO: BME280: Updates to Humidity readings need ctrl_reg write!
  iio: adc: mcp320x: Fix readout of negative voltages
  iio: adc: mcp320x: Fix oops on module unload
  iio: adc: stm32: fix bad error check on max_channels
  iio: trigger: stm32-timer: fix a corner case to write preset
  iio: trigger: stm32-timer: preset shouldn't be buffered
  iio: adc: twl4030: Return an error if we can not enable the vusb3v1 regulator in 'twl4030_madc_probe()'
  iio: adc: twl4030: Disable the vusb3v1 rugulator in the error handling path of 'twl4030_madc_probe()'
  iio: adc: twl4030: Fix an error handling path in 'twl4030_madc_probe()'
  staging: rtl8723bs: avoid null pointer dereference on pmlmepriv
  staging: rtl8723bs: add missing range check on id
  staging: vchiq_2835_arm: Fix NULL ptr dereference in free_pagelist
  staging: speakup: fix speakup-r empty line lockup
  staging: pi433: Move limit check to switch default to kill warning
  staging: r8822be: fix null pointer dereferences with a null driver_adapter
  staging: mt29f_spinand: Enable the read ECC before program the page
  ...
parents c4142ed6 b2e31206

drivers/iio/adc/ad7793.c

+2 −2
Original line number Diff line number Diff line
@@ -257,7 +257,7 @@ static int ad7793_setup(struct iio_dev *indio_dev, 
	unsigned int vref_mv)

{

	struct ad7793_state *st = iio_priv(indio_dev);

	int i, ret = -1;

	int i, ret;

	unsigned long long scale_uv;

	u32 id;
@@ -266,7 +266,7 @@ static int ad7793_setup(struct iio_dev *indio_dev, 
		return ret;



	/* reset the serial interface */

	ret = spi_write(st->sd.spi, (u8 *)&ret, sizeof(ret));

	ret = ad_sd_reset(&st->sd, 32);

	if (ret < 0)

		goto out;

	usleep_range(500, 2000); /* Wait for at least 500us */

drivers/iio/adc/ad_sigma_delta.c

+28 −0
Original line number Diff line number Diff line
@@ -177,6 +177,34 @@ int ad_sd_read_reg(struct ad_sigma_delta *sigma_delta, 
}

EXPORT_SYMBOL_GPL(ad_sd_read_reg);



/**

 * ad_sd_reset() - Reset the serial interface

 *

 * @sigma_delta: The sigma delta device

 * @reset_length: Number of SCLKs with DIN = 1

 *

 * Returns 0 on success, an error code otherwise.

 **/

int ad_sd_reset(struct ad_sigma_delta *sigma_delta,

	unsigned int reset_length)

{

	uint8_t *buf;

	unsigned int size;

	int ret;



	size = DIV_ROUND_UP(reset_length, 8);

	buf = kcalloc(size, sizeof(*buf), GFP_KERNEL);

	if (!buf)

		return -ENOMEM;



	memset(buf, 0xff, size);

	ret = spi_write(sigma_delta->spi, buf, size);

	kfree(buf);



	return ret;

}

EXPORT_SYMBOL_GPL(ad_sd_reset);



static int ad_sd_calibrate(struct ad_sigma_delta *sigma_delta,

	unsigned int mode, unsigned int channel)

{

drivers/iio/adc/mcp320x.c

+16 −9
Original line number Diff line number Diff line
@@ -17,6 +17,8 @@ 
 * MCP3204

 * MCP3208

 * ------------

 * 13 bit converter

 * MCP3301

 *

 * Datasheet can be found here:

 * http://ww1.microchip.com/downloads/en/DeviceDoc/21293C.pdf  mcp3001
@@ -96,7 +98,7 @@ static int mcp320x_channel_to_tx_data(int device_index, 
}



static int mcp320x_adc_conversion(struct mcp320x *adc, u8 channel,

				  bool differential, int device_index)

				  bool differential, int device_index, int *val)

{

	int ret;
@@ -117,19 +119,25 @@ static int mcp320x_adc_conversion(struct mcp320x *adc, u8 channel, 


	switch (device_index) {

	case mcp3001:

		return (adc->rx_buf[0] << 5 | adc->rx_buf[1] >> 3);

		*val = (adc->rx_buf[0] << 5 | adc->rx_buf[1] >> 3);

		return 0;

	case mcp3002:

	case mcp3004:

	case mcp3008:

		return (adc->rx_buf[0] << 2 | adc->rx_buf[1] >> 6);

		*val = (adc->rx_buf[0] << 2 | adc->rx_buf[1] >> 6);

		return 0;

	case mcp3201:

		return (adc->rx_buf[0] << 7 | adc->rx_buf[1] >> 1);

		*val = (adc->rx_buf[0] << 7 | adc->rx_buf[1] >> 1);

		return 0;

	case mcp3202:

	case mcp3204:

	case mcp3208:

		return (adc->rx_buf[0] << 4 | adc->rx_buf[1] >> 4);

		*val = (adc->rx_buf[0] << 4 | adc->rx_buf[1] >> 4);

		return 0;

	case mcp3301:

		return sign_extend32((adc->rx_buf[0] & 0x1f) << 8 | adc->rx_buf[1], 12);

		*val = sign_extend32((adc->rx_buf[0] & 0x1f) << 8

				    | adc->rx_buf[1], 12);

		return 0;

	default:

		return -EINVAL;

	}
@@ -150,12 +158,10 @@ static int mcp320x_read_raw(struct iio_dev *indio_dev, 
	switch (mask) {

	case IIO_CHAN_INFO_RAW:

		ret = mcp320x_adc_conversion(adc, channel->address,

			channel->differential, device_index);



			channel->differential, device_index, val);

		if (ret < 0)

			goto out;



		*val = ret;

		ret = IIO_VAL_INT;

		break;
@@ -312,6 +318,7 @@ static int mcp320x_probe(struct spi_device *spi) 
	indio_dev->name = spi_get_device_id(spi)->name;

	indio_dev->modes = INDIO_DIRECT_MODE;

	indio_dev->info = &mcp320x_info;

	spi_set_drvdata(spi, indio_dev);



	chip_info = &mcp320x_chip_infos[spi_get_device_id(spi)->driver_data];

	indio_dev->channels = chip_info->channels;

drivers/iio/adc/stm32-adc.c

+1 −1
Original line number Diff line number Diff line
@@ -1666,7 +1666,7 @@ static int stm32_adc_chan_of_init(struct iio_dev *indio_dev) 


	num_channels = of_property_count_u32_elems(node, "st,adc-channels");

	if (num_channels < 0 ||

	    num_channels >= adc_info->max_channels) {

	    num_channels > adc_info->max_channels) {

		dev_err(&indio_dev->dev, "Bad st,adc-channels?\n");

		return num_channels < 0 ? num_channels : -EINVAL;

	}

drivers/iio/adc/ti-ads1015.c

+5 −3
Original line number Diff line number Diff line
@@ -52,7 +52,7 @@ 


#define ADS1015_CFG_COMP_QUE_MASK	GENMASK(1, 0)

#define ADS1015_CFG_COMP_LAT_MASK	BIT(2)

#define ADS1015_CFG_COMP_POL_MASK	BIT(2)

#define ADS1015_CFG_COMP_POL_MASK	BIT(3)

#define ADS1015_CFG_COMP_MODE_MASK	BIT(4)

#define ADS1015_CFG_DR_MASK	GENMASK(7, 5)

#define ADS1015_CFG_MOD_MASK	BIT(8)
@@ -1017,10 +1017,12 @@ static int ads1015_probe(struct i2c_client *client, 


		switch (irq_trig) {

		case IRQF_TRIGGER_LOW:

			cfg_comp |= ADS1015_CFG_COMP_POL_LOW;

			cfg_comp |= ADS1015_CFG_COMP_POL_LOW <<

					ADS1015_CFG_COMP_POL_SHIFT;

			break;

		case IRQF_TRIGGER_HIGH:

			cfg_comp |= ADS1015_CFG_COMP_POL_HIGH;

			cfg_comp |= ADS1015_CFG_COMP_POL_HIGH <<

					ADS1015_CFG_COMP_POL_SHIFT;

			break;

		default:

			return -EINVAL;