From 51b292d3b952672525358a4c99588b39e8abf2e9 Mon Sep 17 00:00:00 2001
From: Mateusz Tomaszkiewicz <silentdemon@gmail.com>
Date: Fri, 22 Feb 2013 00:54:11 +0100
Subject: [PATCH] SSD2119: PWM period change

100 kHz PWM period made small induction coil onboard LCD to moan if the
pulse width was smaller than 100%. I changed it to 1MHz.
---
 .../SSD2119/gdisp_lld_board_embest_dmstf4bb.h      | 14 ++++++++++++++
 .../SSD2119/gdisp_lld_board_embest_dmstf4bb_fsmc.h |  5 ++---
 2 files changed, 16 insertions(+), 3 deletions(-)

diff --git a/drivers/gdisp/SSD2119/gdisp_lld_board_embest_dmstf4bb.h b/drivers/gdisp/SSD2119/gdisp_lld_board_embest_dmstf4bb.h
index 66f205c5..495c5fc9 100644
--- a/drivers/gdisp/SSD2119/gdisp_lld_board_embest_dmstf4bb.h
+++ b/drivers/gdisp/SSD2119/gdisp_lld_board_embest_dmstf4bb.h
@@ -40,6 +40,20 @@
 #define SET_RST		palSetPad(GPIOD, 3);
 #define CLR_RST		palClearPad(GPIOD, 3);
 
+/* PWM configuration structure. We use timer 4 channel 2 (orange LED on board). */
+static const PWMConfig pwmcfg = {
+  1000000,		/* 1 MHz PWM clock frequency. */
+  100,			/* PWM period is 100 cycles. */
+  NULL,
+  {
+   {PWM_OUTPUT_ACTIVE_HIGH, NULL},
+   {PWM_OUTPUT_ACTIVE_HIGH, NULL},
+   {PWM_OUTPUT_ACTIVE_HIGH, NULL},
+   {PWM_OUTPUT_ACTIVE_HIGH, NULL}
+  },
+  0
+};
+
 /**
  * @brief   Initialise the board for the display.
  * @notes	This board definition uses GPIO and assumes exclusive access to these GPIO pins
diff --git a/drivers/gdisp/SSD2119/gdisp_lld_board_embest_dmstf4bb_fsmc.h b/drivers/gdisp/SSD2119/gdisp_lld_board_embest_dmstf4bb_fsmc.h
index a3813f04..c6e11493 100644
--- a/drivers/gdisp/SSD2119/gdisp_lld_board_embest_dmstf4bb_fsmc.h
+++ b/drivers/gdisp/SSD2119/gdisp_lld_board_embest_dmstf4bb_fsmc.h
@@ -38,8 +38,8 @@
 
 /* PWM configuration structure. We use timer 4 channel 2 (orange LED on board). */
 static const PWMConfig pwmcfg = {
-  100000,                                   /* 100kHz PWM clock frequency.  */
-  100,                                      /* PWM period is 128 cycles.    */
+  1000000,		/* 1 MHz PWM clock frequency. */
+  100,			/* PWM period is 100 cycles. */
   NULL,
   {
    {PWM_OUTPUT_ACTIVE_HIGH, NULL},
@@ -47,7 +47,6 @@ static const PWMConfig pwmcfg = {
    {PWM_OUTPUT_ACTIVE_HIGH, NULL},
    {PWM_OUTPUT_ACTIVE_HIGH, NULL}
   },
-  /* HW dependent part.*/
   0
 };