[PATCH v4 02/16] media: sony-starvis2: Reorder link frequencies to remove lookup

[Dave Stevenson <dave.stevenson@raspberrypi.com>]

link_freqs_reg_value is table that just reverses the order of the
link frequency enum.

Reverse the order of the link frequencies so that the table is
redundant, and remove it.

Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
---
 drivers/media/i2c/sony-starvis2.c | 31 ++++++++++---------------------
 1 file changed, 10 insertions(+), 21 deletions(-)

diff --git a/drivers/media/i2c/sony-starvis2.c b/drivers/media/i2c/sony-starvis2.c
index b4733990d03a..3656658e18a4 100644
--- a/drivers/media/i2c/sony-starvis2.c
+++ b/drivers/media/i2c/sony-starvis2.c
@@ -186,25 +186,14 @@ enum starvis2_lanemode {
 
 /* Link frequency setup (DDR: lane rate = 2 x link freq) */
 enum {
-	STARVIS2_LINK_FREQ_297MHZ,
-	STARVIS2_LINK_FREQ_360MHZ,
-	STARVIS2_LINK_FREQ_445MHZ,
-	STARVIS2_LINK_FREQ_594MHZ,
-	STARVIS2_LINK_FREQ_720MHZ,
-	STARVIS2_LINK_FREQ_891MHZ,
-	STARVIS2_LINK_FREQ_1039MHZ,
-	STARVIS2_LINK_FREQ_1188MHZ,
-};
-
-static const u8 link_freqs_reg_value[] = {
-	[STARVIS2_LINK_FREQ_297MHZ]  = 0x07,
-	[STARVIS2_LINK_FREQ_360MHZ]  = 0x06,
-	[STARVIS2_LINK_FREQ_445MHZ]  = 0x05,
-	[STARVIS2_LINK_FREQ_594MHZ]  = 0x04,
-	[STARVIS2_LINK_FREQ_720MHZ]  = 0x03,
-	[STARVIS2_LINK_FREQ_891MHZ]  = 0x02,
-	[STARVIS2_LINK_FREQ_1039MHZ] = 0x01,
-	[STARVIS2_LINK_FREQ_1188MHZ] = 0x00,
+	STARVIS2_LINK_FREQ_1188MHZ = 0x00,
+	STARVIS2_LINK_FREQ_1039MHZ = 0x01,
+	STARVIS2_LINK_FREQ_891MHZ = 0x02,
+	STARVIS2_LINK_FREQ_720MHZ = 0x03,
+	STARVIS2_LINK_FREQ_594MHZ = 0x04,
+	STARVIS2_LINK_FREQ_445MHZ = 0x05,
+	STARVIS2_LINK_FREQ_360MHZ = 0x06,
+	STARVIS2_LINK_FREQ_297MHZ = 0x07,
 };
 
 static const u64 link_freqs[] = {
@@ -913,7 +902,7 @@ static int starvis2_write_common(struct starvis2 *starvis2)
 	cci_write(starvis2->cci, STARVIS2_REG_INCK_SEL, starvis2->inck_sel_val,
 		  &ret);
 	cci_write(starvis2->cci, STARVIS2_REG_DATARATE_SEL,
-		  link_freqs_reg_value[__ffs(starvis2->link_freq_bitmap)],
+		  __fls(starvis2->link_freq_bitmap),
 		  &ret);
 	cci_write(starvis2->cci, STARVIS2_REG_LANEMODE, starvis2->lane_mode,
 		  &ret);
@@ -1175,7 +1164,7 @@ static int starvis2_init_controls(struct starvis2 *starvis2)
 {
 	struct v4l2_ctrl_handler *ctrl_hdlr;
 	const u32 hmax_4lane =
-			min_hmax_4lane[__ffs(starvis2->link_freq_bitmap)];
+			min_hmax_4lane[__fls(starvis2->link_freq_bitmap)];
 	const u32 lane_scale =
 			starvis2->lane_mode == STARVIS2_LANEMODE_2L ? 2 : 1;
 	struct i2c_client *client = v4l2_get_subdevdata(&starvis2->sd);

-- 
2.34.1