Commit 7d140982 authored by Sowjanya Komatineni's avatar Sowjanya Komatineni Committed by Thierry Reding
Browse files

gpu: host1x: mipi: Use readl_relaxed_poll_timeout() in tegra_mipi_wait() 



Use readl_relaxed_poll_timeout() in tegra_mipi_wait() to simplify
the code.

Signed-off-by: default avatarSowjanya Komatineni <skomatineni@nvidia.com>
Signed-off-by: default avatarThierry Reding <treding@nvidia.com>
parent 767598d4

drivers/gpu/host1x/mipi.c

+8 −12
Original line number Diff line number Diff line
@@ -21,9 +21,9 @@ 
 */



#include <linux/clk.h>

#include <linux/delay.h>

#include <linux/host1x.h>

#include <linux/io.h>

#include <linux/iopoll.h>

#include <linux/of_platform.h>

#include <linux/platform_device.h>

#include <linux/slab.h>
@@ -295,19 +295,15 @@ EXPORT_SYMBOL(tegra_mipi_disable); 


static int tegra_mipi_wait(struct tegra_mipi *mipi)

{

	unsigned long timeout = jiffies + msecs_to_jiffies(250);

	void __iomem *status_reg = mipi->regs + (MIPI_CAL_STATUS << 2);

	u32 value;

	int err;



	while (time_before(jiffies, timeout)) {

		value = tegra_mipi_readl(mipi, MIPI_CAL_STATUS);

		if ((value & MIPI_CAL_STATUS_ACTIVE) == 0 &&

		    (value & MIPI_CAL_STATUS_DONE) != 0)

			return 0;



		usleep_range(10, 50);

	}



	return -ETIMEDOUT;

	err = readl_relaxed_poll_timeout(status_reg, value,

					 !(value & MIPI_CAL_STATUS_ACTIVE) &&

					 (value & MIPI_CAL_STATUS_DONE), 50,

					 250000);

	return err;

}



int tegra_mipi_calibrate(struct tegra_mipi_device *device)