The Toppoly panels have a global reset line. Add an optional gpio
control for this line, for platforms which have the ability to drive it.

Signed-off-by: Robert Jarzmik <robert.jarz...@free.fr>
---
 drivers/video/backlight/tdo24m.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/drivers/video/backlight/tdo24m.c b/drivers/video/backlight/tdo24m.c
index e4bd63e9db6b..e4b2dfabf192 100644
--- a/drivers/video/backlight/tdo24m.c
+++ b/drivers/video/backlight/tdo24m.c
@@ -10,6 +10,7 @@
  */
 
 #include <linux/module.h>
+#include <linux/gpio/consumer.h>
 #include <linux/kernel.h>
 #include <linux/init.h>
 #include <linux/device.h>
@@ -32,6 +33,7 @@ struct tdo24m {
        struct spi_message      msg;
        struct spi_transfer     xfer;
        uint8_t                 *buf;
+       struct gpio_desc        *xres;
 
        int (*adj_mode)(struct tdo24m *lcd, int mode);
        int color_invert;
@@ -364,6 +366,7 @@ static int tdo24m_probe(struct spi_device *spi)
        if (lcd->buf == NULL)
                return -ENOMEM;
 
+       lcd->xres = devm_gpiod_get(&spi->dev, "reset", GPIOD_OUT_LOW);
        m = &lcd->msg;
        x = &lcd->xfer;
 
-- 
2.11.0

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