viafb: factor lcd scaling parameters out

These parameters are the same for all currently known VIA IGPs so it
does not make any sense to store them with IGP specific data. This
saves a few bytes and helps a bit in dicovering the real differences.

Signed-off-by: Florian Tobias Schandinat <FlorianSchandinat@gmx.de>

1 files changed, 19 insertions, 0 deletions

diff --git a/drivers/video/via/hw.c b/drivers/video/via/hw.c
index b0b02783b6ee..6cb3b5626f0d 100644
--- a/drivers/video/via/hw.c
+++ b/drivers/video/via/hw.c
@@ -360,6 +360,24 @@ static struct pll_map pll_value[] = {
                 {208, 5, 2} }
 };
 
+/* according to VIA Technologies these values are based on experiment */
+static struct io_reg scaling_parameters[] = {
+        {VIACR, CR7A, 0xFF, 0x01},      /* LCD Scaling Parameter 1 */
+        {VIACR, CR7B, 0xFF, 0x02},      /* LCD Scaling Parameter 2 */
+        {VIACR, CR7C, 0xFF, 0x03},      /* LCD Scaling Parameter 3 */
+        {VIACR, CR7D, 0xFF, 0x04},      /* LCD Scaling Parameter 4 */
+        {VIACR, CR7E, 0xFF, 0x07},      /* LCD Scaling Parameter 5 */
+        {VIACR, CR7F, 0xFF, 0x0A},      /* LCD Scaling Parameter 6 */
+        {VIACR, CR80, 0xFF, 0x0D},      /* LCD Scaling Parameter 7 */
+        {VIACR, CR81, 0xFF, 0x13},      /* LCD Scaling Parameter 8 */
+        {VIACR, CR82, 0xFF, 0x16},      /* LCD Scaling Parameter 9 */
+        {VIACR, CR83, 0xFF, 0x19},      /* LCD Scaling Parameter 10 */
+        {VIACR, CR84, 0xFF, 0x1C},      /* LCD Scaling Parameter 11 */
+        {VIACR, CR85, 0xFF, 0x1D},      /* LCD Scaling Parameter 12 */
+        {VIACR, CR86, 0xFF, 0x1E},      /* LCD Scaling Parameter 13 */
+        {VIACR, CR87, 0xFF, 0x1F},      /* LCD Scaling Parameter 14 */
+};
+
 static struct fifo_depth_select display_fifo_depth_reg = {
         /* IGA1 FIFO Depth_Select */
         {IGA1_FIFO_DEPTH_SELECT_REG_NUM, {{SR17, 0, 7} } },
@@ -2419,6 +2437,7 @@ int viafb_setmode(struct VideoModeTable *vmode_tbl, int video_bpp,
                 break;
         }
 
+        viafb_write_regx(scaling_parameters, ARRAY_SIZE(scaling_parameters));
         device_off();
         via_set_state(devices, VIA_STATE_OFF);