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authorLaurent Pinchart <laurent.pinchart@ideasonboard.com>2012-10-25 06:29:24 -0300
committerMauro Carvalho Chehab <mchehab@redhat.com>2012-11-28 10:53:07 -0200
commitb057c3c32229c0db914c03eefb2579d877612926 (patch)
tree9b93bbe906d3c42d05ea49cc65ac1d1b06d3cea2 /drivers/media
parente023a11342b6624cc019c8cecfc488882f0721f9 (diff)
downloadop-kernel-dev-b057c3c32229c0db914c03eefb2579d877612926.zip
op-kernel-dev-b057c3c32229c0db914c03eefb2579d877612926.tar.gz
[media] omap3isp: Prepare/unprepare clocks before/after enable/disable
Clock enable (disable) is split in two operations, prepare and enable (disable and unprepare). Perform both when enabling/disabling the ISP clocks. Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Acked-by: Sakari Ailus <sakari.ailus@iki.fi> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Diffstat (limited to 'drivers/media')
-rw-r--r--drivers/media/platform/omap3isp/isp.c25
1 files changed, 13 insertions, 12 deletions
diff --git a/drivers/media/platform/omap3isp/isp.c b/drivers/media/platform/omap3isp/isp.c
index e8e724e..7da622e 100644
--- a/drivers/media/platform/omap3isp/isp.c
+++ b/drivers/media/platform/omap3isp/isp.c
@@ -1332,7 +1332,8 @@ void omap3isp_subclk_disable(struct isp_device *isp,
* isp_enable_clocks - Enable ISP clocks
* @isp: OMAP3 ISP device
*
- * Return 0 if successful, or clk_enable return value if any of tthem fails.
+ * Return 0 if successful, or clk_prepare_enable return value if any of them
+ * fails.
*/
static int isp_enable_clocks(struct isp_device *isp)
{
@@ -1354,9 +1355,9 @@ static int isp_enable_clocks(struct isp_device *isp)
else
divisor = 2;
- r = clk_enable(isp->clock[ISP_CLK_CAM_ICK]);
+ r = clk_prepare_enable(isp->clock[ISP_CLK_CAM_ICK]);
if (r) {
- dev_err(isp->dev, "clk_enable cam_ick failed\n");
+ dev_err(isp->dev, "failed to enable cam_ick clock\n");
goto out_clk_enable_ick;
}
r = clk_set_rate(isp->clock[ISP_CLK_DPLL4_M5_CK],
@@ -1365,9 +1366,9 @@ static int isp_enable_clocks(struct isp_device *isp)
dev_err(isp->dev, "clk_set_rate for dpll4_m5_ck failed\n");
goto out_clk_enable_mclk;
}
- r = clk_enable(isp->clock[ISP_CLK_CAM_MCLK]);
+ r = clk_prepare_enable(isp->clock[ISP_CLK_CAM_MCLK]);
if (r) {
- dev_err(isp->dev, "clk_enable cam_mclk failed\n");
+ dev_err(isp->dev, "failed to enable cam_mclk clock\n");
goto out_clk_enable_mclk;
}
rate = clk_get_rate(isp->clock[ISP_CLK_CAM_MCLK]);
@@ -1375,17 +1376,17 @@ static int isp_enable_clocks(struct isp_device *isp)
dev_warn(isp->dev, "unexpected cam_mclk rate:\n"
" expected : %d\n"
" actual : %ld\n", CM_CAM_MCLK_HZ, rate);
- r = clk_enable(isp->clock[ISP_CLK_CSI2_FCK]);
+ r = clk_prepare_enable(isp->clock[ISP_CLK_CSI2_FCK]);
if (r) {
- dev_err(isp->dev, "clk_enable csi2_fck failed\n");
+ dev_err(isp->dev, "failed to enable csi2_fck clock\n");
goto out_clk_enable_csi2_fclk;
}
return 0;
out_clk_enable_csi2_fclk:
- clk_disable(isp->clock[ISP_CLK_CAM_MCLK]);
+ clk_disable_unprepare(isp->clock[ISP_CLK_CAM_MCLK]);
out_clk_enable_mclk:
- clk_disable(isp->clock[ISP_CLK_CAM_ICK]);
+ clk_disable_unprepare(isp->clock[ISP_CLK_CAM_ICK]);
out_clk_enable_ick:
return r;
}
@@ -1396,9 +1397,9 @@ out_clk_enable_ick:
*/
static void isp_disable_clocks(struct isp_device *isp)
{
- clk_disable(isp->clock[ISP_CLK_CAM_ICK]);
- clk_disable(isp->clock[ISP_CLK_CAM_MCLK]);
- clk_disable(isp->clock[ISP_CLK_CSI2_FCK]);
+ clk_disable_unprepare(isp->clock[ISP_CLK_CAM_ICK]);
+ clk_disable_unprepare(isp->clock[ISP_CLK_CAM_MCLK]);
+ clk_disable_unprepare(isp->clock[ISP_CLK_CSI2_FCK]);
}
static const char *isp_clocks[] = {
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