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authorRussell King <rmk@dyn-67.arm.linux.org.uk>2005-04-30 23:32:38 +0100
committerRussell King <rmk@dyn-67.arm.linux.org.uk>2005-04-30 23:32:38 +0100
commit4774e2260cf25c54f2188dd0407676e3af6f1f23 (patch)
tree36d362b6f5522e59e663031f4ce2eaf6169b38c3
parented562ab12733ab75437b3390427d41fce9da83c3 (diff)
[PATCH] ARM: IntegratorCP: Fix CLCD MUX selection values
The documentation on these values seems to be rather wrong. These values have been determined by mere trial and error. Signed-off-by: Russell King <rmk@arm.linux.org.uk>
-rw-r--r--arch/arm/mach-integrator/integrator_cp.c17
-rw-r--r--include/asm-arm/arch-integrator/cm.h6
2 files changed, 19 insertions, 4 deletions
diff --git a/arch/arm/mach-integrator/integrator_cp.c b/arch/arm/mach-integrator/integrator_cp.c
index 68e15c36e33..3b948e8c275 100644
--- a/arch/arm/mach-integrator/integrator_cp.c
+++ b/arch/arm/mach-integrator/integrator_cp.c
@@ -420,7 +420,22 @@ static struct clcd_panel vga = {
*/
static void cp_clcd_enable(struct clcd_fb *fb)
{
- cm_control(CM_CTRL_LCDMUXSEL_MASK, CM_CTRL_LCDMUXSEL_VGA);
+ u32 val;
+
+ if (fb->fb.var.bits_per_pixel <= 8)
+ val = CM_CTRL_LCDMUXSEL_VGA_8421BPP;
+ else if (fb->fb.var.bits_per_pixel <= 16)
+ val = CM_CTRL_LCDMUXSEL_VGA_16BPP;
+ else
+ val = 0; /* no idea for this, don't trust the docs */
+
+ cm_control(CM_CTRL_LCDMUXSEL_MASK|
+ CM_CTRL_LCDEN0|
+ CM_CTRL_LCDEN1|
+ CM_CTRL_STATIC1|
+ CM_CTRL_STATIC2|
+ CM_CTRL_STATIC|
+ CM_CTRL_n24BITEN, val);
}
static unsigned long framesize = SZ_1M;
diff --git a/include/asm-arm/arch-integrator/cm.h b/include/asm-arm/arch-integrator/cm.h
index d31c1a71f78..1ab353e2359 100644
--- a/include/asm-arm/arch-integrator/cm.h
+++ b/include/asm-arm/arch-integrator/cm.h
@@ -24,9 +24,9 @@ void cm_control(u32, u32);
#define CM_CTRL_LCDBIASDN (1 << 10)
#define CM_CTRL_LCDMUXSEL_MASK (7 << 11)
#define CM_CTRL_LCDMUXSEL_GENLCD (1 << 11)
-#define CM_CTRL_LCDMUXSEL_SHARPLCD1 (3 << 11)
-#define CM_CTRL_LCDMUXSEL_SHARPLCD2 (4 << 11)
-#define CM_CTRL_LCDMUXSEL_VGA (7 << 11)
+#define CM_CTRL_LCDMUXSEL_VGA_16BPP (2 << 11)
+#define CM_CTRL_LCDMUXSEL_SHARPLCD (3 << 11)
+#define CM_CTRL_LCDMUXSEL_VGA_8421BPP (4 << 11)
#define CM_CTRL_LCDEN0 (1 << 14)
#define CM_CTRL_LCDEN1 (1 << 15)
#define CM_CTRL_STATIC1 (1 << 16)