[PATCH 3.12 088/182] video: atmel_lcdfb: ensure the hardware is initialized with the correct mode

Jiri Slaby
2014-05-13T09:45:31Z

From: Antoine Ténart <antoine.tenart@free-electrons.com>

3.12-stable review patch. If anyone has any objections, please let me know.

===============

commit 7d3477d801808a5037a511cf5a5aae5718e7ecce upstream.

If no driver takeover the atmel_lcdfb, the lcd won't be in a working state
since atmel_lcdfb_set_par() will never be called. Enabling a driver which does,
like fbcon, will call the function and put atmel_lcdfb in a working state.

Fixes: b985172b328a (video: atmel_lcdfb: add device tree suport)

Signed-off-by: Antoine Ténart <antoine.tenart@free-electrons.com>
Reported-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
Acked-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
Acked-by: Nicolas Ferre <nicolas.ferre@atmel.com>
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
Signed-off-by: Jiri Slaby <jslaby@suse.cz>
---
drivers/video/atmel_lcdfb.c | 6 ++++++
1 file changed, 6 insertions(+)

diff --git a/drivers/video/atmel_lcdfb.c b/drivers/video/atmel_lcdfb.c
index 088511a58a26..0aca4e6b2871 100644
--- a/drivers/video/atmel_lcdfb.c
+++ b/drivers/video/atmel_lcdfb.c
@@ -1081,6 +1081,12 @@ static int __init atmel_lcdfb_probe(struct platform_device *pdev)
goto free_cmap;
}

+ ret = atmel_lcdfb_set_par(info);
+ if (ret < 0) {
+ dev_err(dev, "set par failed: %d\n", ret);
+ goto unregister_irqs;
+ }
+
dev_set_drvdata(dev, info);

/*
--
1.9.3