drm/mgag200: Set DDC timeout in milliseconds

Compute the i2c timeout in jiffies from a value in milliseconds. The
original values of 2 jiffies equals 2 milliseconds if HZ has been
configured to a value of 1000. This corresponds to 2.2 milliseconds
used by most other DRM drivers. Update mgag200 accordingly.

Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Reviewed-by: Jocelyn Falempe <jfalempe@redhat.com>
Fixes: 414c45310625 ("mgag200: initial g200se driver (v2)")
Cc: Dave Airlie <airlied@redhat.com>
Cc: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Cc: Maxime Ripard <mripard@kernel.org>
Cc: Thomas Zimmermann <tzimmermann@suse.de>
Cc: Jocelyn Falempe <jfalempe@redhat.com>
Cc: dri-devel@lists.freedesktop.org
Cc: <stable@vger.kernel.org> # v3.5+
Link: https://patchwork.freedesktop.org/patch/msgid/20240513125620.6337-2-tzimmermann@suse.de

diff --git a/drivers/gpu/drm/mgag200/mgag200_i2c.c b/drivers/gpu/drm/mgag200/mgag200_i2c.c
index 423eb302be7eb9def877158d5499b70c9a785905..1029fef590f9bbe93c79a6c93707c72f75d103d4 100644 (file)
--- a/drivers/gpu/drm/mgag200/mgag200_i2c.c
+++ b/drivers/gpu/drm/mgag200/mgag200_i2c.c
@@ -114,7 +114,7 @@ int mgag200_i2c_init(struct mga_device *mdev, struct mga_i2c_chan *i2c)
        i2c->adapter.algo_data = &i2c->bit;
 
        i2c->bit.udelay = 10;
-       i2c->bit.timeout = 2;
+       i2c->bit.timeout = usecs_to_jiffies(2200);
        i2c->bit.data = i2c;
        i2c->bit.setsda         = mga_gpio_setsda;
        i2c->bit.setscl         = mga_gpio_setscl;