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iio: at91: move the num_channels from DT to driver itself

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CC: devicetree@vger.kernel.org
Signed-off-by: Josh Wu <josh.wu@atmel.com>
Acked-by: Ludovic Desroches <ludovic.desroches@atmel.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
This commit is contained in:
Josh Wu 2013-10-08 04:48:00 +01:00 committed by Jonathan Cameron
parent c46016665f
commit 2b6d598bc9
2 changed files with 5 additions and 8 deletions
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1
Documentation/devicetree/bindings/arm/atmel-adc.txt
View file

@ -7,7 +7,6 @@ Required properties:
- interrupts: Should contain the IRQ line for the ADC
- atmel,adc-channels-used: Bitmask of the channels muxed and enable for this
device
- atmel,adc-num-channels: Number of channels available in the ADC
- atmel,adc-startup-time: Startup Time of the ADC in microseconds as
defined in the datasheet
- atmel,adc-vref: Reference voltage in millivolts for the conversions

12
drivers/iio/adc/at91_adc.c
View file

@ -43,6 +43,7 @@ struct at91_adc_caps {
/* startup time calculate function */
u32 (*calc_startup_ticks)(u8 startup_time, u32 adc_clk_khz);
u8 num_channels;
struct at91_adc_reg_desc registers;
};
@ -496,13 +497,6 @@ static int at91_adc_probe_dt(struct at91_adc_state *st,
}
st->channels_mask = prop;
if (of_property_read_u32(node, "atmel,adc-num-channels", &prop)) {
dev_err(&idev->dev, "Missing adc-num-channels property in the DT.\n");
ret = -EINVAL;
goto error_ret;
}
st->num_channels = prop;
st->sleep_mode = of_property_read_bool(node, "atmel,adc-sleep-mode");
if (of_property_read_u32(node, "atmel,adc-startup-time", &prop)) {
@ -528,6 +522,7 @@ static int at91_adc_probe_dt(struct at91_adc_state *st,
goto error_ret;
st->registers = &st->caps->registers;
st->num_channels = st->caps->num_channels;
st->trigger_number = of_get_child_count(node);
st->trigger_list = devm_kzalloc(&idev->dev, st->trigger_number *
sizeof(struct at91_adc_trigger),
@ -773,6 +768,7 @@ static int at91_adc_remove(struct platform_device *pdev)
#ifdef CONFIG_OF
static struct at91_adc_caps at91sam9260_caps = {
.calc_startup_ticks = calc_startup_ticks_9260,
.num_channels = 4,
.registers = {
.channel_base = AT91_ADC_CHR(0),
.drdy_mask = AT91_ADC_DRDY,
@ -785,6 +781,7 @@ static struct at91_adc_caps at91sam9260_caps = {
static struct at91_adc_caps at91sam9g45_caps = {
.calc_startup_ticks = calc_startup_ticks_9260, /* same as 9260 */
.num_channels = 8,
.registers = {
.channel_base = AT91_ADC_CHR(0),
.drdy_mask = AT91_ADC_DRDY,
@ -797,6 +794,7 @@ static struct at91_adc_caps at91sam9g45_caps = {
static struct at91_adc_caps at91sam9x5_caps = {
.calc_startup_ticks = calc_startup_ticks_9x5,
.num_channels = 12,
.registers = {
.channel_base = AT91_ADC_CDR0_9X5,
.drdy_mask = AT91_ADC_SR_DRDY_9X5,