The delay units inside the LRADC depend on the presence of a 2 kHz clock.
This change enables the clock to be able to use the delay unit for the
touchscreen part of the driver.
Signed-off-by: Juergen Beisert <jbe@pengutronix.de>
Tested-by: Marek Vasut <marex@denx.de>
Acked-by: Marek Vasut <marex@denx.de>
Tested-by: Lothar Waßmann <LW@KARO-electronics.de>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
reg = <0x80050000 0x2000>;
interrupts = <36 37 38 39 40 41 42 43 44>;
status = "disabled";
reg = <0x80050000 0x2000>;
interrupts = <36 37 38 39 40 41 42 43 44>;
status = "disabled";
interrupts = <10 14 15 16 17 18 19
20 21 22 23 24 25>;
status = "disabled";
interrupts = <10 14 15 16 17 18 19
20 21 22 23 24 25>;
status = "disabled";
};
spdif: spdif@80054000 {
};
spdif: spdif@80054000 {
#include <linux/completion.h>
#include <linux/delay.h>
#include <linux/input.h>
#include <linux/completion.h>
#include <linux/delay.h>
#include <linux/input.h>
#include <linux/iio/iio.h>
#include <linux/iio/buffer.h>
#include <linux/iio/iio.h>
#include <linux/iio/buffer.h>
void __iomem *base;
int irq[13];
void __iomem *base;
int irq[13];
uint32_t *buffer;
struct iio_trigger *trig;
uint32_t *buffer;
struct iio_trigger *trig;
if (IS_ERR(lradc->base))
return PTR_ERR(lradc->base);
if (IS_ERR(lradc->base))
return PTR_ERR(lradc->base);
+ lradc->clk = devm_clk_get(&pdev->dev, NULL);
+ if (IS_ERR(lradc->clk)) {
+ dev_err(dev, "Failed to get the delay unit clock\n");
+ return PTR_ERR(lradc->clk);
+ }
+ ret = clk_prepare_enable(lradc->clk);
+ if (ret != 0) {
+ dev_err(dev, "Failed to enable the delay unit clock\n");
+ return ret;
+ }
+
INIT_WORK(&lradc->ts_work, mxs_lradc_ts_work);
/* Check if touchscreen is enabled in DT. */
INIT_WORK(&lradc->ts_work, mxs_lradc_ts_work);
/* Check if touchscreen is enabled in DT. */
mxs_lradc_trigger_remove(iio);
iio_triggered_buffer_cleanup(iio);
mxs_lradc_trigger_remove(iio);
iio_triggered_buffer_cleanup(iio);
+ clk_disable_unprepare(lradc->clk);