summaryrefslogtreecommitdiff
path: root/drivers/iio/dac
diff options
context:
space:
mode:
Diffstat (limited to 'drivers/iio/dac')
-rw-r--r--drivers/iio/dac/ad3552r.c3
-rw-r--r--drivers/iio/dac/ad5380.c2
-rw-r--r--drivers/iio/dac/ad5770r.c2
-rw-r--r--drivers/iio/dac/adi-axi-dac.c42
-rw-r--r--drivers/iio/dac/ltc2688.c2
-rw-r--r--drivers/iio/dac/max517.c4
-rw-r--r--drivers/iio/dac/mcp4725.c4
-rw-r--r--drivers/iio/dac/rohm-bd79703.c2
-rw-r--r--drivers/iio/dac/vf610_dac.c23
9 files changed, 34 insertions, 50 deletions
diff --git a/drivers/iio/dac/ad3552r.c b/drivers/iio/dac/ad3552r.c
index a44b163f3183..93c33bc3e1be 100644
--- a/drivers/iio/dac/ad3552r.c
+++ b/drivers/iio/dac/ad3552r.c
@@ -293,10 +293,9 @@ static irqreturn_t ad3552r_trigger_handler(int irq, void *p)
struct iio_buffer *buf = indio_dev->buffer;
struct ad3552r_desc *dac = iio_priv(indio_dev);
/* Maximum size of a scan */
- u8 buff[AD3552R_MAX_CH * AD3552R_MAX_REG_SIZE];
+ u8 buff[AD3552R_MAX_CH * AD3552R_MAX_REG_SIZE] = { };
int err;
- memset(buff, 0, sizeof(buff));
err = iio_pop_from_buffer(buf, buff);
if (err)
goto end;
diff --git a/drivers/iio/dac/ad5380.c b/drivers/iio/dac/ad5380.c
index f63af704b77e..0ddce7b218e3 100644
--- a/drivers/iio/dac/ad5380.c
+++ b/drivers/iio/dac/ad5380.c
@@ -426,7 +426,7 @@ static const struct regmap_config ad5380_regmap_config = {
.val_bits = 14,
.max_register = AD5380_REG_DATA(40),
- .cache_type = REGCACHE_RBTREE,
+ .cache_type = REGCACHE_MAPLE,
.volatile_reg = ad5380_reg_false,
.readable_reg = ad5380_reg_false,
diff --git a/drivers/iio/dac/ad5770r.c b/drivers/iio/dac/ad5770r.c
index 6eb4027a44fb..cd47cb1c685c 100644
--- a/drivers/iio/dac/ad5770r.c
+++ b/drivers/iio/dac/ad5770r.c
@@ -155,7 +155,7 @@ struct ad5770r_output_modes {
int max;
};
-static struct ad5770r_output_modes ad5770r_rng_tbl[] = {
+static const struct ad5770r_output_modes ad5770r_rng_tbl[] = {
{ 0, AD5770R_CH0_0_300, 0, 300 },
{ 0, AD5770R_CH0_NEG_60_0, -60, 0 },
{ 0, AD5770R_CH0_NEG_60_300, -60, 300 },
diff --git a/drivers/iio/dac/adi-axi-dac.c b/drivers/iio/dac/adi-axi-dac.c
index 33faba4b02c2..a0e546dba368 100644
--- a/drivers/iio/dac/adi-axi-dac.c
+++ b/drivers/iio/dac/adi-axi-dac.c
@@ -635,15 +635,26 @@ static int axi_dac_ddr_disable(struct iio_backend *back)
AXI_DAC_CNTRL_2_SDR_DDR_N);
}
+static int axi_dac_wait_bus_free(struct axi_dac_state *st)
+{
+ u32 val;
+ int ret;
+
+ ret = regmap_read_poll_timeout(st->regmap, AXI_DAC_UI_STATUS_REG, val,
+ FIELD_GET(AXI_DAC_UI_STATUS_IF_BUSY, val) == 0, 10,
+ 100 * KILO);
+ if (ret == -ETIMEDOUT)
+ dev_err(st->dev, "AXI bus timeout\n");
+
+ return ret;
+}
+
static int axi_dac_data_stream_enable(struct iio_backend *back)
{
struct axi_dac_state *st = iio_backend_get_priv(back);
- int ret, val;
+ int ret;
- ret = regmap_read_poll_timeout(st->regmap,
- AXI_DAC_UI_STATUS_REG, val,
- FIELD_GET(AXI_DAC_UI_STATUS_IF_BUSY, val) == 0,
- 10, 100 * KILO);
+ ret = axi_dac_wait_bus_free(st);
if (ret)
return ret;
@@ -734,12 +745,9 @@ static int __axi_dac_bus_reg_write(struct iio_backend *back, u32 reg,
if (ret)
return ret;
- ret = regmap_read_poll_timeout(st->regmap,
- AXI_DAC_UI_STATUS_REG, ival,
- FIELD_GET(AXI_DAC_UI_STATUS_IF_BUSY, ival) == 0,
- 10, 100 * KILO);
- if (ret == -ETIMEDOUT)
- dev_err(st->dev, "AXI read timeout\n");
+ ret = axi_dac_wait_bus_free(st);
+ if (ret)
+ return ret;
/* Cleaning always AXI_DAC_CUSTOM_CTRL_TRANSFER_DATA */
return regmap_clear_bits(st->regmap, AXI_DAC_CUSTOM_CTRL_REG,
@@ -760,7 +768,6 @@ static int axi_dac_bus_reg_read(struct iio_backend *back, u32 reg, u32 *val,
{
struct axi_dac_state *st = iio_backend_get_priv(back);
int ret;
- u32 ival;
guard(mutex)(&st->lock);
@@ -773,10 +780,7 @@ static int axi_dac_bus_reg_read(struct iio_backend *back, u32 reg, u32 *val,
if (ret)
return ret;
- ret = regmap_read_poll_timeout(st->regmap,
- AXI_DAC_UI_STATUS_REG, ival,
- FIELD_GET(AXI_DAC_UI_STATUS_IF_BUSY, ival) == 0,
- 10, 100 * KILO);
+ ret = axi_dac_wait_bus_free(st);
if (ret)
return ret;
@@ -787,7 +791,7 @@ static int axi_dac_bus_set_io_mode(struct iio_backend *back,
enum ad3552r_io_mode mode)
{
struct axi_dac_state *st = iio_backend_get_priv(back);
- int ival, ret;
+ int ret;
if (mode > AD3552R_IO_MODE_QSPI)
return -EINVAL;
@@ -800,9 +804,7 @@ static int axi_dac_bus_set_io_mode(struct iio_backend *back,
if (ret)
return ret;
- return regmap_read_poll_timeout(st->regmap, AXI_DAC_UI_STATUS_REG, ival,
- FIELD_GET(AXI_DAC_UI_STATUS_IF_BUSY, ival) == 0, 10,
- 100 * KILO);
+ return axi_dac_wait_bus_free(st);
}
static void axi_dac_child_remove(void *data)
diff --git a/drivers/iio/dac/ltc2688.c b/drivers/iio/dac/ltc2688.c
index 1f24f07d1ad2..7a2ee26a7d68 100644
--- a/drivers/iio/dac/ltc2688.c
+++ b/drivers/iio/dac/ltc2688.c
@@ -622,7 +622,7 @@ static const struct iio_chan_spec_ext_info ltc2688_toggle_ext_info[] = {
{ }
};
-static struct iio_chan_spec_ext_info ltc2688_dither_ext_info[] = {
+static const struct iio_chan_spec_ext_info ltc2688_dither_ext_info[] = {
LTC2688_CHAN_EXT_INFO("dither_raw", LTC2688_INPUT_B, IIO_SEPARATE,
ltc2688_dac_input_read, ltc2688_dac_input_write),
LTC2688_CHAN_EXT_INFO("dither_raw_available", LTC2688_INPUT_B_AVAIL,
diff --git a/drivers/iio/dac/max517.c b/drivers/iio/dac/max517.c
index 84336736a47b..d334c67821ad 100644
--- a/drivers/iio/dac/max517.c
+++ b/drivers/iio/dac/max517.c
@@ -15,8 +15,6 @@
#include <linux/iio/sysfs.h>
#include <linux/iio/dac/max517.h>
-#define MAX517_DRV_NAME "max517"
-
/* Commands */
#define COMMAND_CHANNEL0 0x00
#define COMMAND_CHANNEL1 0x01 /* for MAX518 and MAX519 */
@@ -200,7 +198,7 @@ MODULE_DEVICE_TABLE(i2c, max517_id);
static struct i2c_driver max517_driver = {
.driver = {
- .name = MAX517_DRV_NAME,
+ .name = "max517",
.pm = pm_sleep_ptr(&max517_pm_ops),
},
.probe = max517_probe,
diff --git a/drivers/iio/dac/mcp4725.c b/drivers/iio/dac/mcp4725.c
index 62972494a229..23b9e3a09ec8 100644
--- a/drivers/iio/dac/mcp4725.c
+++ b/drivers/iio/dac/mcp4725.c
@@ -24,8 +24,6 @@
#include <linux/iio/dac/mcp4725.h>
-#define MCP4725_DRV_NAME "mcp4725"
-
#define MCP472X_REF_VDD 0x00
#define MCP472X_REF_VREF_UNBUFFERED 0x02
#define MCP472X_REF_VREF_BUFFERED 0x03
@@ -546,7 +544,7 @@ MODULE_DEVICE_TABLE(of, mcp4725_of_match);
static struct i2c_driver mcp4725_driver = {
.driver = {
- .name = MCP4725_DRV_NAME,
+ .name = "mcp4725",
.of_match_table = mcp4725_of_match,
.pm = pm_sleep_ptr(&mcp4725_pm_ops),
},
diff --git a/drivers/iio/dac/rohm-bd79703.c b/drivers/iio/dac/rohm-bd79703.c
index a35c37d2261d..e91090e4a66d 100644
--- a/drivers/iio/dac/rohm-bd79703.c
+++ b/drivers/iio/dac/rohm-bd79703.c
@@ -35,7 +35,7 @@ static const struct regmap_config bd79703_regmap_config = {
.reg_bits = 8,
.val_bits = 8,
.max_register = BD79703_MAX_REGISTER,
- .cache_type = REGCACHE_RBTREE,
+ .cache_type = REGCACHE_MAPLE,
};
/* Dynamic driver private data */
diff --git a/drivers/iio/dac/vf610_dac.c b/drivers/iio/dac/vf610_dac.c
index b30ff7bb4400..93639599b2b9 100644
--- a/drivers/iio/dac/vf610_dac.c
+++ b/drivers/iio/dac/vf610_dac.c
@@ -178,10 +178,8 @@ static int vf610_dac_probe(struct platform_device *pdev)
indio_dev = devm_iio_device_alloc(&pdev->dev,
sizeof(struct vf610_dac));
- if (!indio_dev) {
- dev_err(&pdev->dev, "Failed allocating iio device\n");
+ if (!indio_dev)
return -ENOMEM;
- }
info = iio_priv(indio_dev);
info->dev = &pdev->dev;
@@ -190,12 +188,10 @@ static int vf610_dac_probe(struct platform_device *pdev)
if (IS_ERR(info->regs))
return PTR_ERR(info->regs);
- info->clk = devm_clk_get(&pdev->dev, "dac");
- if (IS_ERR(info->clk)) {
- dev_err(&pdev->dev, "Failed getting clock, err = %ld\n",
- PTR_ERR(info->clk));
- return PTR_ERR(info->clk);
- }
+ info->clk = devm_clk_get_enabled(&pdev->dev, "dac");
+ if (IS_ERR(info->clk))
+ return dev_err_probe(&pdev->dev, PTR_ERR(info->clk),
+ "Failed getting clock\n");
platform_set_drvdata(pdev, indio_dev);
@@ -207,13 +203,6 @@ static int vf610_dac_probe(struct platform_device *pdev)
mutex_init(&info->lock);
- ret = clk_prepare_enable(info->clk);
- if (ret) {
- dev_err(&pdev->dev,
- "Could not prepare or enable the clock\n");
- return ret;
- }
-
vf610_dac_init(info);
ret = iio_device_register(indio_dev);
@@ -226,7 +215,6 @@ static int vf610_dac_probe(struct platform_device *pdev)
error_iio_device_register:
vf610_dac_exit(info);
- clk_disable_unprepare(info->clk);
return ret;
}
@@ -238,7 +226,6 @@ static void vf610_dac_remove(struct platform_device *pdev)
iio_device_unregister(indio_dev);
vf610_dac_exit(info);
- clk_disable_unprepare(info->clk);
}
static int vf610_dac_suspend(struct device *dev)
generated by cgit (git 2.34.1) at 2025-07-30 21:48:41 +0000