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authorSylwester Nawrocki <s.nawrocki@samsung.com>2012-11-02 14:20:27 -0300
committerMauro Carvalho Chehab <mchehab@redhat.com>2012-12-21 12:23:41 -0200
commitcd65a645a4f5e456607067734f9a11385c9dce7b (patch)
tree0497ad79d4c2cbd5a57070a9cc7e74e531cd3bf3 /drivers/media/platform/s5p-fimc/mipi-csis.c
parente26991b49a132626130428d64222a355ffdd7139 (diff)
[media] s5p-csis: Enable only data lanes that are actively used
Enable only MIPI CSI-2 data lanes at the DPHY that are actively used, rather than unmasking all unconditionally. Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com> Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Diffstat (limited to 'drivers/media/platform/s5p-fimc/mipi-csis.c')
-rw-r--r--drivers/media/platform/s5p-fimc/mipi-csis.c12
1 files changed, 7 insertions, 5 deletions
diff --git a/drivers/media/platform/s5p-fimc/mipi-csis.c b/drivers/media/platform/s5p-fimc/mipi-csis.c
index 36916d3f199a..8ec7c3b79659 100644
--- a/drivers/media/platform/s5p-fimc/mipi-csis.c
+++ b/drivers/media/platform/s5p-fimc/mipi-csis.c
@@ -273,7 +273,8 @@ static void s5pcsis_reset(struct csis_state *state)
static void s5pcsis_system_enable(struct csis_state *state, int on)
{
- u32 val;
+ struct s5p_platform_mipi_csis *pdata = state->pdev->dev.platform_data;
+ u32 val, mask;
val = s5pcsis_read(state, S5PCSIS_CTRL);
if (on)
@@ -283,10 +284,11 @@ static void s5pcsis_system_enable(struct csis_state *state, int on)
s5pcsis_write(state, S5PCSIS_CTRL, val);
val = s5pcsis_read(state, S5PCSIS_DPHYCTRL);
- if (on)
- val |= S5PCSIS_DPHYCTRL_ENABLE;
- else
- val &= ~S5PCSIS_DPHYCTRL_ENABLE;
+ val &= ~S5PCSIS_DPHYCTRL_ENABLE;
+ if (on) {
+ mask = (1 << (pdata->lanes + 1)) - 1;
+ val |= (mask & S5PCSIS_DPHYCTRL_ENABLE);
+ }
s5pcsis_write(state, S5PCSIS_DPHYCTRL, val);
}

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