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twinkie: fix CC2 reception in PD injector mode

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Properly set the comparator output when using CC2.

Also add some basic LED color to display the current power contract when
we are a sink :
- green : 5V
- red : 20V
- blue : other voltage

Signed-off-by: Vincent Palatin <vpalatin@chromium.org>

BRANCH=none
BUG=none
TEST=plug to Zinger in each plug direction and see green then red LED.
type "pd 0 dev 12" and see the blue LED.

Change-Id: I4eb4339568eda5871c7f3df75bedebd97238e941
Reviewed-on: https://chromium-review.googlesource.com/226385
Reviewed-by: Alec Berg <alecaberg@chromium.org>
Tested-by: Vincent Palatin <vpalatin@chromium.org>
Commit-Queue: Vincent Palatin <vpalatin@chromium.org>
This commit is contained in:
Vincent Palatin
2014-10-29 17:03:35 -07:00
committed by chrome-internal-fetch
parent bd9a53f322
commit d4f3279db9
2 changed files with 9 additions and 2 deletions
Download Patch File Download Diff File Expand all files Collapse all files

4
board/twinkie/usb_pd_config.h
View File

@@ -48,9 +48,9 @@ static inline void spi_enable_clock(int port)
STM32_RCC_APB2ENR |= STM32_RCC_PB2_SPI1;
}
/* RX is using COMP1 triggering TIM1 CH1 */
/* RX is using COMP1 or COMp2 triggering TIM1 CH1 */
#define CMP1OUTSEL STM32_COMP_CMP1OUTSEL_TIM1_IC1
#define CMP2OUTSEL 0
#define CMP2OUTSEL STM32_COMP_CMP2OUTSEL_TIM1_IC1
#define DMAC_TIM_RX(p) STM32_DMAC_CH2
#define TIM_RX_CCR_IDX(p) TIM_RX_CCR_C0

7
board/twinkie/usb_pd_policy.c
View File

@@ -6,6 +6,7 @@
#include "common.h"
#include "config.h"
#include "console.h"
#include "gpio.h"
#include "hooks.h"
#include "registers.h"
#include "task.h"
@@ -81,6 +82,12 @@ int pd_choose_voltage(int cnt, uint32_t *src_caps, uint32_t *rdo,
void pd_set_input_current_limit(int port, uint32_t max_ma,
uint32_t supply_voltage)
{
int red = supply_voltage == 20000;
int green = supply_voltage == 5000;
int blue = supply_voltage && !(red || green);
gpio_set_level(GPIO_LED_R_L, !red);
gpio_set_level(GPIO_LED_G_L, !green);
gpio_set_level(GPIO_LED_B_L, !blue);
}
void pd_set_max_voltage(unsigned mv)