rtd2132: implement full configuration

It has been disseminated that the RTD2132 chip
needs to be fully programmed for settings to take affect.
Most of the settings are note documented very well and
present themselves as magic values. Also, the wait time
for starting the sequence needs to be bumped from 2ms to 60ms.
Lastly, expose all the known settings through devicetree.

Change-Id: I9eeea9c4a13ec20b8ce1c5297e43c4dd793d90e5
Signed-off-by: Aaron Durbin <adurbin@chromium.org>
Reviewed-on: https://gerrit.chromium.org/gerrit/65857
Reviewed-by: Stefan Reinauer <reinauer@google.com>
Reviewed-on: http://review.coreboot.org/4471
Tested-by: build bot (Jenkins)
Reviewed-by: Patrick Georgi <patrick@georgi-clan.de>

1 files changed, 22 insertions, 0 deletions

diff --git a/src/drivers/i2c/rtd2132/chip.h b/src/drivers/i2c/rtd2132/chip.h
index 34ae91a3fe..2cf08270d3 100644
--- a/src/drivers/i2c/rtd2132/chip.h
+++ b/src/drivers/i2c/rtd2132/chip.h
@@ -18,6 +18,28 @@
  */
 
 struct drivers_i2c_rtd2132_config {
+	/* Panel Power Sequencing. All units in ms. */
+	u16 t1; /* Delay from panel Vcc enable to LVDS output enable. */
+	u16 t2; /* Delay from LVDS output enable to PWM output enable. */
+	u16 t3; /* Delay from PWM output enable to backlight output enable. */
+	u16 t4; /* Delay from backlight output disable to PWM output disable. */
+	u16 t5; /* Delay from PWM output disable to LVDS output disable. */
+	u16 t6; /* Delay from LVDS output disable to panel Vcc disable. */
+	u16 t7; /* Delay between tweo panel power on/off sequence. */
+
+	/*
+	 * LVDS swap.
+	 *  0x00 - Normal
+	 *  0x01 - Mirror
+	 *  0x02 - P/N
+	 *  0x03 - Mirror + P/N
+	 *  0x04 - R/L
+	 *
+	 *  Dual Support or in bit 7:
+	 *  0x80 - Dual Swap
+	 */
+	u8 lvds_swap;
+
 	/*
 	 * LVDS Spread Spectrum Clock
 	 *  0x00 = DISABLED