1 files changed, 85 insertions, 0 deletions
diff --git a/board/hatch_fp/board.c b/board/hatch_fp/board.c
new file mode 100644
index 0000000000..b86f0b8f46
--- /dev/null
+++ b/board/hatch_fp/board.c
@@ -0,0 +1,85 @@
+/* Copyright 2019 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.
+ */
+/* Meowth Fingerprint MCU configuration */
+
+#include "common.h"
+#include "console.h"
+#include "gpio.h"
+#include "hooks.h"
+#include "registers.h"
+#include "spi.h"
+#include "system.h"
+#include "task.h"
+#include "util.h"
+
+#ifndef HAS_TASK_FPSENSOR
+void fps_event(enum gpio_signal signal)
+{
+}
+#endif
+
+static void ap_deferred(void)
+{
+	/*
+	 * in S3:   SLP_S3_L is 0 and SLP_S0_L is X.
+	 * in S0ix: SLP_S3_L is X and SLP_S0_L is 0.
+	 * in S0:   SLP_S3_L is 1 and SLP_S0_L is 1.
+	 * in S5/G3, the FP MCU should not be running.
+	 */
+	int running = gpio_get_level(GPIO_PCH_SLP_S3_L)
+			&& gpio_get_level(GPIO_PCH_SLP_S0_L);
+
+	if (running) { /* S0 */
+		disable_sleep(SLEEP_MASK_AP_RUN);
+		hook_notify(HOOK_CHIPSET_RESUME);
+	} else { /* S0ix/S3 */
+		hook_notify(HOOK_CHIPSET_SUSPEND);
+		enable_sleep(SLEEP_MASK_AP_RUN);
+	}
+}
+DECLARE_DEFERRED(ap_deferred);
+
+/* PCH power state changes */
+void slp_event(enum gpio_signal signal)
+{
+	hook_call_deferred(&ap_deferred_data, 0);
+}
+
+#include "gpio_list.h"
+
+/* SPI devices */
+const struct spi_device_t spi_devices[] = {
+	/* Fingerprint sensor (SCLK at 4Mhz) */
+	{ CONFIG_SPI_FP_PORT, 3, GPIO_SPI2_NSS }
+};
+const unsigned int spi_devices_used = ARRAY_SIZE(spi_devices);
+
+static void spi_configure(void)
+{
+	/* Configure SPI GPIOs */
+	gpio_config_module(MODULE_SPI_MASTER, 1);
+	/*
+	 * Set all SPI master signal pins to very high speed:
+	 * pins B12/13/14/15
+	 */
+	STM32_GPIO_OSPEEDR(GPIO_B) |= 0xff000000;
+	/* Enable clocks to SPI2 module (master) */
+	STM32_RCC_APB1ENR |= STM32_RCC_PB1_SPI2;
+
+	spi_enable(CONFIG_SPI_FP_PORT, 1);
+}
+
+/* Initialize board. */
+static void board_init(void)
+{
+	spi_configure();
+
+	/* Enable interrupt on PCH power signals */
+	gpio_enable_interrupt(GPIO_PCH_SLP_S3_L);
+	gpio_enable_interrupt(GPIO_PCH_SLP_S0_L);
+	/* enable the SPI slave interface if the PCH is up */
+	hook_call_deferred(&ap_deferred_data, 0);
+}
+DECLARE_HOOK(HOOK_INIT, board_init, HOOK_PRIO_DEFAULT);