imx233: add pinctrl debug code to track pin uses

Past development has proved that one can mistakely use
the same pin for two uses without noticing. Since this
causes extremely hard to find bugs, the infrastructure
will allow to register pin uses and panic when a conflict
is detected. The pinctrl debug now shows the pin uses
when its support is compiled in.

Change-Id: Idb2d5235ce09207d77aa474d6f158e72b933761a

1 files changed, 8 insertions, 1 deletions

diff --git a/firmware/target/arm/imx233/sansa-fuzeplus/lcd-fuzeplus.c b/firmware/target/arm/imx233/sansa-fuzeplus/lcd-fuzeplus.c
index b83c49d092..20b46fdc63 100644
--- a/firmware/target/arm/imx233/sansa-fuzeplus/lcd-fuzeplus.c
+++ b/firmware/target/arm/imx233/sansa-fuzeplus/lcd-fuzeplus.c
@@ -56,6 +56,13 @@ static void setup_lcd_pins(bool use_lcdif)
     /* WARNING
      * the B1P22 and B1P24 pins are used by the tuner i2c! Do NOT drive
      * them as lcd_dotclk and lcd_hsync or it will break the tuner! */
+    imx233_pinctrl_acquire_pin(1, 18, "lcd reset");
+    imx233_pinctrl_acquire_pin(1, 19, "lcd rs");
+    imx233_pinctrl_acquire_pin(1, 20, "lcd wr");
+    imx233_pinctrl_acquire_pin(1, 21, "lcd cs");
+    imx233_pinctrl_acquire_pin(1, 23, "lcd enable");
+    imx233_pinctrl_acquire_pin(1, 25, "lcd vsync");
+    imx233_pinctrl_acquire_pin_mask(1, 0x3ffff, "lcd data");
     if(use_lcdif)
     {
         imx233_set_pin_function(1, 25, PINCTRL_FUNCTION_GPIO); /* lcd_vsync */
@@ -71,7 +78,7 @@ static void setup_lcd_pins(bool use_lcdif)
     else
     {
         __REG_SET(HW_PINCTRL_MUXSEL(2)) = 0xffffffff; /* lcd_d{0-15} */
-        imx233_enable_gpio_output_mask(1, 0x3ffffff, false); /* lcd_{d{0-17},reset,rs,wr,cs,dotclk,enable,hsync,vsync} */
+        imx233_enable_gpio_output_mask(1, 0x2bfffff, false); /* lcd_{d{0-17},reset,rs,wr,cs,enable,vsync} */
         imx233_set_pin_function(1, 16, PINCTRL_FUNCTION_GPIO); /* lcd_d16 */
         imx233_set_pin_function(1, 17, PINCTRL_FUNCTION_GPIO); /* lcd_d17 */
         imx233_set_pin_function(1, 19, PINCTRL_FUNCTION_GPIO); /* lcd_rs */