glados_pd: add initial support for glados PD

Initial support for glados PD. Charging and PD
communication only work on port 0.

BUG=none
BRANCH=none
TEST=make BOARD=glados, make BOARD=glados_pd
Connect hoho to glados and verify power contract successful.
Connect zinger to glados and verify power contract and
charging.

Change-Id: I42e7b8d154a79de2f8502648d9af7d4cfc00a266
Signed-off-by: Alec Berg <alecaberg@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/273138
Reviewed-by: Shawn N <shawnn@chromium.org>

1 files changed, 105 insertions, 0 deletions

diff --git a/board/glados_pd/board.c b/board/glados_pd/board.c
new file mode 100644
index 0000000000..38853f86db
--- /dev/null
+++ b/board/glados_pd/board.c
@@ -0,0 +1,105 @@
+/* Copyright 2015 The Chromium OS Authors. All rights reserved.
+ * Use of this source code is governed by a BSD-style license that can be
+ * found in the LICENSE file.
+ */
+
+/* glados_pd board configuration */
+
+#include "adc.h"
+#include "adc_chip.h"
+#include "common.h"
+#include "console.h"
+#include "gpio.h"
+#include "hooks.h"
+#include "host_command.h"
+#include "i2c.h"
+#include "registers.h"
+#include "system.h"
+#include "task.h"
+#include "usb_pd.h"
+#include "util.h"
+
+#define CPRINTS(format, args...) cprints(CC_USBCHARGE, format, ## args)
+
+void pd_send_ec_int(void)
+{
+	gpio_set_level(GPIO_EC_INT, 0);
+
+	/*
+	 * Delay long enough to guarantee EC see's the change.
+	 * TODO: make sure this delay is sufficient.
+	 */
+	usleep(5);
+
+	gpio_set_level(GPIO_EC_INT, 1);
+}
+
+void vbus0_evt(enum gpio_signal signal)
+{
+	task_wake(TASK_ID_PD);
+}
+
+void vbus1_evt(enum gpio_signal signal)
+{
+#ifdef HAS_TASK_PD_C1
+	task_wake(TASK_ID_PD_C1);
+#endif
+}
+
+void board_config_pre_init(void)
+{
+	/* enable SYSCFG clock */
+	STM32_RCC_APB2ENR |= 1 << 0;
+	/*
+	 * the DMA mapping is :
+	 *  Chan 2 : TIM1_CH1  (C0 RX)
+	 *  Chan 3 : SPI1_TX   (C0 TX)
+	 *  Chan 4 : TIM3_CH1  (C1 RX)
+	 *  Chan 5 : SPI2_TX   (C1 TX)
+	 */
+}
+
+#include "gpio_list.h"
+
+/* Initialize board. */
+static void board_init(void)
+{
+	/* Enable interrupts on VBUS transitions. */
+	gpio_enable_interrupt(GPIO_USB_C0_VBUS_WAKE_L);
+	gpio_enable_interrupt(GPIO_USB_C1_VBUS_WAKE_L);
+}
+DECLARE_HOOK(HOOK_INIT, board_init, HOOK_PRIO_DEFAULT);
+
+/* ADC channels */
+const struct adc_t adc_channels[] = {
+	/* USB PD CC lines sensing. Converted to mV (3300mV/4096). */
+	[ADC_C1_CC1_PD] = {"C1_CC1_PD", 3300, 4096, 0, STM32_AIN(0)},
+	[ADC_C0_CC1_PD] = {"C0_CC1_PD", 3300, 4096, 0, STM32_AIN(2)},
+	[ADC_C0_CC2_PD] = {"C0_CC2_PD", 3300, 4096, 0, STM32_AIN(4)},
+	[ADC_C1_CC2_PD] = {"C1_CC2_PD", 3300, 4096, 0, STM32_AIN(5)},
+};
+BUILD_ASSERT(ARRAY_SIZE(adc_channels) == ADC_CH_COUNT);
+
+/* I2C ports */
+const struct i2c_port_t i2c_ports[] = {
+	{"slave", I2C_PORT_SLAVE, 1000, GPIO_SLAVE_I2C_SCL, GPIO_SLAVE_I2C_SDA}
+};
+const unsigned int i2c_ports_used = ARRAY_SIZE(i2c_ports);
+
+void tcpc_alert(void)
+{
+	pd_send_ec_int();
+}
+
+/****************************************************************************/
+/* Console commands */
+static int command_ec_int(int argc, char **argv)
+{
+	pd_send_ec_int();
+
+	return EC_SUCCESS;
+}
+DECLARE_CONSOLE_COMMAND(ecint, command_ec_int,
+			"",
+			"Toggle EC interrupt line",
+			NULL);