GK SDK 源码库: XMIPCLinuxV100R005C00SPC030 (kernel/tools/open_source excluded)

source/bootloader/u-boot-2020.01/drivers/led/Kconfig

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+menu "LED Support"
+
+config LED
+	bool "Enable LED support"
+	depends on DM
+	help
+	  Many boards have LEDs which can be used to signal status or alerts.
+	  U-Boot provides a uclass API to implement this feature. LED drivers
+	  can provide access to board-specific LEDs. Use of the device tree
+	  for configuration is encouraged.
+
+config LED_BCM6328
+	bool "LED Support for BCM6328"
+	depends on LED && ARCH_BMIPS
+	help
+	  This option enables support for LEDs connected to the BCM6328
+	  LED HW controller accessed via MMIO registers.
+	  HW blinking is supported and up to 24 LEDs can be controlled.
+	  All LEDs can blink at the same time but the delay is shared, which
+	  means that if one LED is set to blink at 100ms and then a different
+	  LED is set to blink at 200ms, both will blink at 200ms.
+
+config LED_BCM6358
+	bool "LED Support for BCM6358"
+	depends on LED && ARCH_BMIPS
+	help
+	  This option enables support for LEDs connected to the BCM6358
+	  LED HW controller accessed via MMIO registers.
+	  HW has no blinking capabilities and up to 32 LEDs can be controlled.
+
+config LED_BCM6858
+	bool "LED Support for BCM6858"
+	depends on LED && (ARCH_BCM6858 || ARCH_BCM63158)
+	help
+	  This option enables support for LEDs connected to the BCM6858
+	  HW has blinking capabilities and up to 32 LEDs can be controlled.
+
+config LED_BLINK
+	bool "Support LED blinking"
+	depends on LED
+	help
+	  Some drivers can support automatic blinking of LEDs with a given
+	  period, without needing timers or extra code to handle the timing.
+	  This option enables support for this which adds slightly to the
+	  code size.
+
+config SPL_LED
+	bool "Enable LED support in SPL"
+	depends on SPL && SPL_DM
+	help
+	  The LED subsystem adds a small amount of overhead to the image.
+	  If this is acceptable and you have a need to use LEDs in SPL,
+	  enable this option. You will need to enable device tree in SPL
+	  for this to work.
+
+config LED_GPIO
+	bool "LED support for GPIO-connected LEDs"
+	depends on LED && DM_GPIO
+	help
+	  Enable support for LEDs which are connected to GPIO lines. These
+	  GPIOs may be on the SoC or some other device which provides GPIOs.
+	  The GPIO driver must used driver model. LEDs are configured using
+	  the device tree.
+
+config SPL_LED_GPIO
+	bool "LED support for GPIO-connected LEDs in SPL"
+        depends on SPL_LED && DM_GPIO
+	help
+	  This option is an SPL-variant of the LED_GPIO option.
+	  See the help of LED_GPIO for details.
+
+config LED_STATUS
+	bool "Enable status LED API"
+	help
+	  Allows common u-boot commands to use a board's leds to
+	  provide status for activities like booting and downloading files.
+
+if LED_STATUS
+
+# Hidden constants
+
+config LED_STATUS_OFF
+	int
+	default 0
+
+config LED_STATUS_BLINKING
+	int
+	default 1
+
+config LED_STATUS_ON
+	int
+	default 2
+
+# Hidden constants end
+
+config LED_STATUS_GPIO
+	bool "GPIO status LED implementation"
+	help
+	  The status LED can be connected to a GPIO pin. In such cases, the
+	  gpio_led driver can be used as a status LED backend implementation.
+
+config LED_STATUS_BOARD_SPECIFIC
+	bool "Specific board"
+	default y
+	help
+	  LED support is only for a specific board.
+
+comment "LEDs parameters"
+
+config LED_STATUS0
+	bool "Enable status LED 0"
+
+if LED_STATUS0
+
+config LED_STATUS_BIT
+	int "identification"
+	help
+	  CONFIG_LED_STATUS_BIT is passed into the __led_* functions to identify
+	  which LED is being acted on.  As such, the chosen value must be unique
+	  with respect to the other CONFIG_LED_STATUS_BIT's. Mapping the value
+	  to a physical LED is the responsibility of the __led_* function.
+
+config LED_STATUS_STATE
+	int "initial state"
+	range LED_STATUS_OFF LED_STATUS_ON
+	default LED_STATUS_OFF
+	help
+	  Should be set one of the following:
+	  0 - off
+	  1 - blinking
+	  2 - on
+
+config LED_STATUS_FREQ
+	int "blink frequency"
+	range 2 10
+	default 2
+	help
+	  The LED blink period calculated from LED_STATUS_FREQ:
+	  LED_STATUS_PERIOD = CONFIG_SYS_HZ/LED_STATUS_FREQ
+	  Values range: 2 - 10
+
+endif # LED_STATUS0
+
+config LED_STATUS1
+	bool "Enable status LED 1"
+
+if LED_STATUS1
+
+config LED_STATUS_BIT1
+	int "identification"
+	help
+	  CONFIG_LED_STATUS_BIT1 is passed into the __led_* functions to
+	  identify which LED is being acted on.  As such, the chosen value must
+	  be unique with respect to the other CONFIG_LED_STATUS_BIT's. Mapping
+	  the value to a physical LED is the responsibility of the __led_*
+	  function.
+
+config LED_STATUS_STATE1
+	int "initial state"
+	range LED_STATUS_OFF LED_STATUS_ON
+	default LED_STATUS_OFF
+	help
+	  Should be set one of the following:
+	  0 - off
+	  1 - blinking
+	  2 - on
+
+config LED_STATUS_FREQ1
+	int "blink frequency"
+	range 2 10
+	default 2
+	help
+	  The LED blink period calculated from LED_STATUS_FREQ1:
+	  LED_STATUS_PERIOD1 = CONFIG_SYS_HZ/LED_STATUS_FREQ1
+	  Values range: 2 - 10
+
+endif # LED_STATUS1
+
+config LED_STATUS2
+	bool "Enable status LED 2"
+
+if LED_STATUS2
+
+config LED_STATUS_BIT2
+	int "identification"
+	help
+	  CONFIG_LED_STATUS_BIT2 is passed into the __led_* functions to
+	  identify which LED is being acted on.  As such, the chosen value must
+	  be unique with respect to the other CONFIG_LED_STATUS_BIT's. Mapping
+	  the value to a physical LED is the responsibility of the __led_*
+	  function.
+
+config LED_STATUS_STATE2
+	int "initial state"
+	range LED_STATUS_OFF LED_STATUS_ON
+	default LED_STATUS_OFF
+	help
+	  Should be set one of the following:
+	  0 - off
+	  1 - blinking
+	  2 - on
+
+config LED_STATUS_FREQ2
+	int "blink frequency"
+	range 2 10
+	default 2
+	help
+	  The LED blink period calculated from LED_STATUS_FREQ2:
+	  LED_STATUS_PERIOD2 = CONFIG_SYS_HZ/LED_STATUS_FREQ2
+	  Values range: 2 - 10
+
+endif # LED_STATUS2
+
+config LED_STATUS3
+	bool "Enable status LED 3"
+
+if LED_STATUS3
+
+config LED_STATUS_BIT3
+	int "identification"
+	help
+	  CONFIG_LED_STATUS_BIT3 is passed into the __led_* functions to
+	  identify which LED is being acted on.  As such, the chosen value must
+	  be unique with respect to the other CONFIG_LED_STATUS_BIT's. Mapping
+	  the value to a physical LED is the responsibility of the __led_*
+	  function.
+
+config LED_STATUS_STATE3
+	int "initial state"
+	range LED_STATUS_OFF LED_STATUS_ON
+	default LED_STATUS_OFF
+	help
+	  Should be set one of the following:
+	  0 - off
+	  1 - blinking
+	  2 - on
+
+config LED_STATUS_FREQ3
+	int "blink frequency"
+	range 2 10
+	default 2
+	help
+	  The LED blink period calculated from LED_STATUS_FREQ3:
+	  LED_STATUS_PERIOD3 = CONFIG_SYS_HZ/LED_STATUS_FREQ3
+	  Values range: 2 - 10
+
+endif # LED_STATUS3
+
+config LED_STATUS4
+	bool "Enable status LED 4"
+
+if LED_STATUS4
+
+config LED_STATUS_BIT4
+	int "identification"
+	help
+	  CONFIG_LED_STATUS_BIT4 is passed into the __led_* functions to
+	  identify which LED is being acted on.  As such, the chosen value must
+	  be unique with respect to the other CONFIG_LED_STATUS_BIT's. Mapping
+	  the value to a physical LED is the responsibility of the __led_*
+	  function.
+
+config LED_STATUS_STATE4
+	int "initial state"
+	range LED_STATUS_OFF LED_STATUS_ON
+	default LED_STATUS_OFF
+	help
+	  Should be set one of the following:
+	  0 - off
+	  1 - blinking
+	  2 - on
+
+config LED_STATUS_FREQ4
+	int "blink frequency"
+	range 2 10
+	default 2
+	help
+	  The LED blink period calculated from LED_STATUS_FREQ4:
+	  LED_STATUS_PERIOD4 = CONFIG_SYS_HZ/LED_STATUS_FREQ4
+	  Values range: 2 - 10
+
+endif # LED_STATUS4
+
+config LED_STATUS5
+	bool "Enable status LED 5"
+
+if LED_STATUS5
+
+config LED_STATUS_BIT5
+	int "identification"
+	help
+	  CONFIG_LED_STATUS_BIT5 is passed into the __led_* functions to
+	  identify which LED is being acted on.  As such, the chosen value must
+	  be unique with respect to the other CONFIG_LED_STATUS_BIT's. Mapping
+	  the value to a physical LED is the responsibility of the __led_*
+	  function.
+
+config LED_STATUS_STATE5
+	int "initial state"
+	range LED_STATUS_OFF LED_STATUS_ON
+	default LED_STATUS_OFF
+	help
+	  Should be set one of the following:
+	  0 - off
+	  1 - blinking
+	  2 - on
+
+config LED_STATUS_FREQ5
+	int "blink frequency"
+	range 2 10
+	default 2
+	help
+	  The LED blink period calculated from LED_STATUS_FREQ5:
+	  LED_STATUS_PERIOD5 = CONFIG_SYS_HZ/LED_STATUS_FREQ5
+	  Values range: 2 - 10
+
+endif # LED_STATUS5
+
+config LED_STATUS_BOOT_ENABLE
+	bool "Enable BOOT LED"
+	help
+	  Enable to turn an LED on when the board is booting.
+
+if LED_STATUS_BOOT_ENABLE
+
+config LED_STATUS_BOOT
+	int "LED to light when the board is booting"
+	help
+	  Valid enabled LED device number.
+
+endif # LED_STATUS_BOOT_ENABLE
+
+config LED_STATUS_RED_ENABLE
+	bool "Enable red LED"
+	help
+	  Enable red status LED.
+
+if LED_STATUS_RED_ENABLE
+
+config LED_STATUS_RED
+	int "Red LED identification"
+	help
+	  Valid enabled LED device number.
+
+endif # LED_STATUS_RED_ENABLE
+
+config LED_STATUS_YELLOW_ENABLE
+	bool "Enable yellow LED"
+	help
+	  Enable yellow status LED.
+
+if LED_STATUS_YELLOW_ENABLE
+
+config LED_STATUS_YELLOW
+	int "Yellow LED identification"
+	help
+	  Valid enabled LED device number.
+
+endif # LED_STATUS_YELLOW_ENABLE
+
+config LED_STATUS_BLUE_ENABLE
+	bool "Enable blue LED"
+	help
+	  Enable blue status LED.
+
+if LED_STATUS_BLUE_ENABLE
+
+config LED_STATUS_BLUE
+	int "Blue LED identification"
+	help
+	  Valid enabled LED device number.
+
+endif # LED_STATUS_BLUE_ENABLE
+
+config LED_STATUS_GREEN_ENABLE
+	bool "Enable green LED"
+	help
+	  Enable green status LED.
+
+if LED_STATUS_GREEN_ENABLE
+
+config LED_STATUS_GREEN
+	int "Green LED identification"
+	help
+	  Valid enabled LED device number (0-5).
+
+endif # LED_STATUS_GREEN_ENABLE
+
+config LED_STATUS_CMD
+	bool "Enable status LED commands"
+
+endif # LED_STATUS
+
+endmenu

source/bootloader/u-boot-2020.01/drivers/led/Makefile

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+# SPDX-License-Identifier: GPL-2.0+
+#
+# Copyright (c) 2015 Google, Inc
+# Written by Simon Glass <sjg@chromium.org>
+
+obj-y += led-uclass.o
+obj-$(CONFIG_LED_BCM6328) += led_bcm6328.o
+obj-$(CONFIG_LED_BCM6358) += led_bcm6358.o
+obj-$(CONFIG_LED_BCM6858) += led_bcm6858.o
+obj-$(CONFIG_$(SPL_)LED_GPIO) += led_gpio.o

source/bootloader/u-boot-2020.01/drivers/led/led-uclass.c

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+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * Copyright (c) 2015 Google, Inc
+ * Written by Simon Glass <sjg@chromium.org>
+ */
+
+#include <common.h>
+#include <dm.h>
+#include <errno.h>
+#include <led.h>
+#include <dm/device-internal.h>
+#include <dm/root.h>
+#include <dm/uclass-internal.h>
+
+int led_get_by_label(const char *label, struct udevice **devp)
+{
+	struct udevice *dev;
+	struct uclass *uc;
+	int ret;
+
+	ret = uclass_get(UCLASS_LED, &uc);
+	if (ret)
+		return ret;
+	uclass_foreach_dev(dev, uc) {
+		struct led_uc_plat *uc_plat = dev_get_uclass_platdata(dev);
+
+		/* Ignore the top-level LED node */
+		if (uc_plat->label && !strcmp(label, uc_plat->label))
+			return uclass_get_device_tail(dev, 0, devp);
+	}
+
+	return -ENODEV;
+}
+
+int led_set_state(struct udevice *dev, enum led_state_t state)
+{
+	struct led_ops *ops = led_get_ops(dev);
+
+	if (!ops->set_state)
+		return -ENOSYS;
+
+	return ops->set_state(dev, state);
+}
+
+enum led_state_t led_get_state(struct udevice *dev)
+{
+	struct led_ops *ops = led_get_ops(dev);
+
+	if (!ops->get_state)
+		return -ENOSYS;
+
+	return ops->get_state(dev);
+}
+
+#ifdef CONFIG_LED_BLINK
+int led_set_period(struct udevice *dev, int period_ms)
+{
+	struct led_ops *ops = led_get_ops(dev);
+
+	if (!ops->set_period)
+		return -ENOSYS;
+
+	return ops->set_period(dev, period_ms);
+}
+#endif
+
+int led_default_state(void)
+{
+	struct udevice *dev;
+	struct uclass *uc;
+	const char *default_state;
+	int ret;
+
+	ret = uclass_get(UCLASS_LED, &uc);
+	if (ret)
+		return ret;
+	for (uclass_find_first_device(UCLASS_LED, &dev);
+	     dev;
+	     uclass_find_next_device(&dev)) {
+		default_state = dev_read_string(dev, "default-state");
+		if (!default_state)
+			continue;
+		ret = device_probe(dev);
+		if (ret)
+			return ret;
+		if (!strncmp(default_state, "on", 2))
+			led_set_state(dev, LEDST_ON);
+		else if (!strncmp(default_state, "off", 3))
+			led_set_state(dev, LEDST_OFF);
+		/* default-state = "keep" : device is only probed */
+	}
+
+	return ret;
+}
+
+UCLASS_DRIVER(led) = {
+	.id		= UCLASS_LED,
+	.name		= "led",
+	.per_device_platdata_auto_alloc_size = sizeof(struct led_uc_plat),
+};

source/bootloader/u-boot-2020.01/drivers/led/led_bcm6328.c

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+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * Copyright (C) 2017 Álvaro Fernández Rojas <noltari@gmail.com>
+ */
+
+#include <common.h>
+#include <dm.h>
+#include <errno.h>
+#include <led.h>
+#include <asm/io.h>
+#include <dm/lists.h>
+
+#define LEDS_MAX			24
+
+/* LED Init register */
+#define LED_INIT_REG			0x00
+#define LED_INIT_FASTINTV_MS		20
+#define LED_INIT_FASTINTV_SHIFT		6
+#define LED_INIT_FASTINTV_MASK		(0x3f << LED_INIT_FASTINTV_SHIFT)
+#define LED_INIT_SLEDEN_SHIFT		12
+#define LED_INIT_SLEDEN_MASK		(1 << LED_INIT_SLEDEN_SHIFT)
+#define LED_INIT_SLEDMUX_SHIFT		13
+#define LED_INIT_SLEDMUX_MASK		(1 << LED_INIT_SLEDMUX_SHIFT)
+#define LED_INIT_SLEDCLKNPOL_SHIFT	14
+#define LED_INIT_SLEDCLKNPOL_MASK	(1 << LED_INIT_SLEDCLKNPOL_SHIFT)
+#define LED_INIT_SLEDDATAPPOL_SHIFT	15
+#define LED_INIT_SLEDDATANPOL_MASK	(1 << LED_INIT_SLEDDATAPPOL_SHIFT)
+#define LED_INIT_SLEDSHIFTDIR_SHIFT	16
+#define LED_INIT_SLEDSHIFTDIR_MASK	(1 << LED_INIT_SLEDSHIFTDIR_SHIFT)
+
+/* LED Mode registers */
+#define LED_MODE_REG_HI			0x04
+#define LED_MODE_REG_LO			0x08
+#define LED_MODE_ON			0
+#define LED_MODE_FAST			1
+#define LED_MODE_BLINK			2
+#define LED_MODE_OFF			3
+#define LED_MODE_MASK			0x3
+
+struct bcm6328_led_priv {
+	void __iomem *regs;
+	void __iomem *mode;
+	uint8_t shift;
+	bool active_low;
+};
+
+static unsigned long bcm6328_led_get_mode(struct bcm6328_led_priv *priv)
+{
+	return ((readl_be(priv->mode) >> priv->shift) & LED_MODE_MASK);
+}
+
+static int bcm6328_led_set_mode(struct bcm6328_led_priv *priv, uint8_t mode)
+{
+	clrsetbits_be32(priv->mode, (LED_MODE_MASK << priv->shift),
+			(mode << priv->shift));
+
+	return 0;
+}
+
+static enum led_state_t bcm6328_led_get_state(struct udevice *dev)
+{
+	struct bcm6328_led_priv *priv = dev_get_priv(dev);
+	enum led_state_t state = LEDST_OFF;
+
+	switch (bcm6328_led_get_mode(priv)) {
+#ifdef CONFIG_LED_BLINK
+	case LED_MODE_BLINK:
+	case LED_MODE_FAST:
+		state = LEDST_BLINK;
+		break;
+#endif
+	case LED_MODE_OFF:
+		state = (priv->active_low ? LEDST_ON : LEDST_OFF);
+		break;
+	case LED_MODE_ON:
+		state = (priv->active_low ? LEDST_OFF : LEDST_ON);
+		break;
+	}
+
+	return state;
+}
+
+static int bcm6328_led_set_state(struct udevice *dev, enum led_state_t state)
+{
+	struct bcm6328_led_priv *priv = dev_get_priv(dev);
+	unsigned long mode;
+
+	switch (state) {
+#ifdef CONFIG_LED_BLINK
+	case LEDST_BLINK:
+		mode = LED_MODE_BLINK;
+		break;
+#endif
+	case LEDST_OFF:
+		mode = (priv->active_low ? LED_MODE_ON : LED_MODE_OFF);
+		break;
+	case LEDST_ON:
+		mode = (priv->active_low ? LED_MODE_OFF : LED_MODE_ON);
+		break;
+	case LEDST_TOGGLE:
+		if (bcm6328_led_get_state(dev) == LEDST_OFF)
+			return bcm6328_led_set_state(dev, LEDST_ON);
+		else
+			return bcm6328_led_set_state(dev, LEDST_OFF);
+		break;
+	default:
+		return -ENOSYS;
+	}
+
+	return bcm6328_led_set_mode(priv, mode);
+}
+
+#ifdef CONFIG_LED_BLINK
+static unsigned long bcm6328_blink_delay(int delay)
+{
+	unsigned long bcm6328_delay = delay;
+
+	bcm6328_delay += (LED_INIT_FASTINTV_MS / 2);
+	bcm6328_delay /= LED_INIT_FASTINTV_MS;
+	bcm6328_delay <<= LED_INIT_FASTINTV_SHIFT;
+
+	if (bcm6328_delay > LED_INIT_FASTINTV_MASK)
+		return LED_INIT_FASTINTV_MASK;
+	else
+		return bcm6328_delay;
+}
+
+static int bcm6328_led_set_period(struct udevice *dev, int period_ms)
+{
+	struct bcm6328_led_priv *priv = dev_get_priv(dev);
+
+	clrsetbits_be32(priv->regs + LED_INIT_REG, LED_INIT_FASTINTV_MASK,
+			bcm6328_blink_delay(period_ms));
+
+	return 0;
+}
+#endif
+
+static const struct led_ops bcm6328_led_ops = {
+	.get_state = bcm6328_led_get_state,
+	.set_state = bcm6328_led_set_state,
+#ifdef CONFIG_LED_BLINK
+	.set_period = bcm6328_led_set_period,
+#endif
+};
+
+static int bcm6328_led_probe(struct udevice *dev)
+{
+	struct led_uc_plat *uc_plat = dev_get_uclass_platdata(dev);
+
+	/* Top-level LED node */
+	if (!uc_plat->label) {
+		void __iomem *regs;
+		u32 set_bits = 0;
+
+		regs = dev_remap_addr(dev);
+		if (!regs)
+			return -EINVAL;
+
+		if (dev_read_bool(dev, "brcm,serial-leds"))
+			set_bits |= LED_INIT_SLEDEN_MASK;
+		if (dev_read_bool(dev, "brcm,serial-mux"))
+			set_bits |= LED_INIT_SLEDMUX_MASK;
+		if (dev_read_bool(dev, "brcm,serial-clk-low"))
+			set_bits |= LED_INIT_SLEDCLKNPOL_MASK;
+		if (!dev_read_bool(dev, "brcm,serial-dat-low"))
+			set_bits |= LED_INIT_SLEDDATANPOL_MASK;
+		if (!dev_read_bool(dev, "brcm,serial-shift-inv"))
+			set_bits |= LED_INIT_SLEDSHIFTDIR_MASK;
+
+		clrsetbits_be32(regs + LED_INIT_REG, ~0, set_bits);
+	} else {
+		struct bcm6328_led_priv *priv = dev_get_priv(dev);
+		unsigned int pin;
+
+		priv->regs = dev_remap_addr(dev_get_parent(dev));
+		if (!priv->regs)
+			return -EINVAL;
+
+		pin = dev_read_u32_default(dev, "reg", LEDS_MAX);
+		if (pin >= LEDS_MAX)
+			return -EINVAL;
+
+		if (pin < 8) {
+			/* LEDs 0-7 (bits 47:32) */
+			priv->mode = priv->regs + LED_MODE_REG_HI;
+			priv->shift = (pin << 1);
+		} else {
+			/* LEDs 8-23 (bits 31:0) */
+			priv->mode = priv->regs + LED_MODE_REG_LO;
+			priv->shift = ((pin - 8) << 1);
+		}
+
+		if (dev_read_bool(dev, "active-low"))
+			priv->active_low = true;
+	}
+
+	return 0;
+}
+
+static int bcm6328_led_bind(struct udevice *parent)
+{
+	ofnode node;
+
+	dev_for_each_subnode(node, parent) {
+		struct led_uc_plat *uc_plat;
+		struct udevice *dev;
+		const char *label;
+		int ret;
+
+		label = ofnode_read_string(node, "label");
+		if (!label) {
+			debug("%s: node %s has no label\n", __func__,
+			      ofnode_get_name(node));
+			return -EINVAL;
+		}
+
+		ret = device_bind_driver_to_node(parent, "bcm6328-led",
+						 ofnode_get_name(node),
+						 node, &dev);
+		if (ret)
+			return ret;
+
+		uc_plat = dev_get_uclass_platdata(dev);
+		uc_plat->label = label;
+	}
+
+	return 0;
+}
+
+static const struct udevice_id bcm6328_led_ids[] = {
+	{ .compatible = "brcm,bcm6328-leds" },
+	{ /* sentinel */ }
+};
+
+U_BOOT_DRIVER(bcm6328_led) = {
+	.name = "bcm6328-led",
+	.id = UCLASS_LED,
+	.of_match = bcm6328_led_ids,
+	.ops = &bcm6328_led_ops,
+	.bind = bcm6328_led_bind,
+	.probe = bcm6328_led_probe,
+	.priv_auto_alloc_size = sizeof(struct bcm6328_led_priv),
+};

source/bootloader/u-boot-2020.01/drivers/led/led_bcm6358.c

@@ -0,0 +1,213 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * Copyright (C) 2017 Álvaro Fernández Rojas <noltari@gmail.com>
+ */
+
+#include <common.h>
+#include <dm.h>
+#include <errno.h>
+#include <led.h>
+#include <asm/io.h>
+#include <dm/lists.h>
+
+#define LEDS_MAX		32
+#define LEDS_WAIT		100
+
+/* LED Mode register */
+#define LED_MODE_REG		0x0
+#define LED_MODE_OFF		0
+#define LED_MODE_ON		1
+#define LED_MODE_MASK		1
+
+/* LED Control register */
+#define LED_CTRL_REG		0x4
+#define LED_CTRL_CLK_MASK	0x3
+#define LED_CTRL_CLK_1		0
+#define LED_CTRL_CLK_2		1
+#define LED_CTRL_CLK_4		2
+#define LED_CTRL_CLK_8		3
+#define LED_CTRL_POL_SHIFT	2
+#define LED_CTRL_POL_MASK	(1 << LED_CTRL_POL_SHIFT)
+#define LED_CTRL_BUSY_SHIFT	3
+#define LED_CTRL_BUSY_MASK	(1 << LED_CTRL_BUSY_SHIFT)
+
+struct bcm6358_led_priv {
+	void __iomem *regs;
+	uint8_t pin;
+	bool active_low;
+};
+
+static void bcm6358_led_busy(void __iomem *regs)
+{
+	while (readl_be(regs + LED_CTRL_REG) & LED_CTRL_BUSY_MASK)
+		udelay(LEDS_WAIT);
+}
+
+static unsigned long bcm6358_led_get_mode(struct bcm6358_led_priv *priv)
+{
+	bcm6358_led_busy(priv->regs);
+
+	return (readl_be(priv->regs + LED_MODE_REG) >> priv->pin) &
+	       LED_MODE_MASK;
+}
+
+static int bcm6358_led_set_mode(struct bcm6358_led_priv *priv, uint8_t mode)
+{
+	bcm6358_led_busy(priv->regs);
+
+	clrsetbits_be32(priv->regs + LED_MODE_REG,
+			(LED_MODE_MASK << priv->pin),
+			(mode << priv->pin));
+
+	return 0;
+}
+
+static enum led_state_t bcm6358_led_get_state(struct udevice *dev)
+{
+	struct bcm6358_led_priv *priv = dev_get_priv(dev);
+	enum led_state_t state = LEDST_OFF;
+
+	switch (bcm6358_led_get_mode(priv)) {
+	case LED_MODE_OFF:
+		state = (priv->active_low ? LEDST_ON : LEDST_OFF);
+		break;
+	case LED_MODE_ON:
+		state = (priv->active_low ? LEDST_OFF : LEDST_ON);
+		break;
+	}
+
+	return state;
+}
+
+static int bcm6358_led_set_state(struct udevice *dev, enum led_state_t state)
+{
+	struct bcm6358_led_priv *priv = dev_get_priv(dev);
+	unsigned long mode;
+
+	switch (state) {
+	case LEDST_OFF:
+		mode = (priv->active_low ? LED_MODE_ON : LED_MODE_OFF);
+		break;
+	case LEDST_ON:
+		mode = (priv->active_low ? LED_MODE_OFF : LED_MODE_ON);
+		break;
+	case LEDST_TOGGLE:
+		if (bcm6358_led_get_state(dev) == LEDST_OFF)
+			return bcm6358_led_set_state(dev, LEDST_ON);
+		else
+			return bcm6358_led_set_state(dev, LEDST_OFF);
+		break;
+	default:
+		return -ENOSYS;
+	}
+
+	return bcm6358_led_set_mode(priv, mode);
+}
+
+static const struct led_ops bcm6358_led_ops = {
+	.get_state = bcm6358_led_get_state,
+	.set_state = bcm6358_led_set_state,
+};
+
+static int bcm6358_led_probe(struct udevice *dev)
+{
+	struct led_uc_plat *uc_plat = dev_get_uclass_platdata(dev);
+
+	/* Top-level LED node */
+	if (!uc_plat->label) {
+		void __iomem *regs;
+		unsigned int clk_div;
+		u32 set_bits = 0;
+
+		regs = dev_remap_addr(dev);
+		if (!regs)
+			return -EINVAL;
+
+		if (dev_read_bool(dev, "brcm,clk-dat-low"))
+			set_bits |= LED_CTRL_POL_MASK;
+		clk_div = dev_read_u32_default(dev, "brcm,clk-div",
+					       LED_CTRL_CLK_1);
+		switch (clk_div) {
+		case 8:
+			set_bits |= LED_CTRL_CLK_8;
+			break;
+		case 4:
+			set_bits |= LED_CTRL_CLK_4;
+			break;
+		case 2:
+			set_bits |= LED_CTRL_CLK_2;
+			break;
+		default:
+			set_bits |= LED_CTRL_CLK_1;
+			break;
+		}
+
+		bcm6358_led_busy(regs);
+		clrsetbits_be32(regs + LED_CTRL_REG,
+				LED_CTRL_POL_MASK | LED_CTRL_CLK_MASK,
+				set_bits);
+	} else {
+		struct bcm6358_led_priv *priv = dev_get_priv(dev);
+		unsigned int pin;
+
+		priv->regs = dev_remap_addr(dev);
+		if (!priv->regs)
+			return -EINVAL;
+
+		pin = dev_read_u32_default(dev, "reg", LEDS_MAX);
+		if (pin >= LEDS_MAX)
+			return -EINVAL;
+
+		priv->pin = pin;
+
+		if (dev_read_bool(dev, "active-low"))
+			priv->active_low = true;
+	}
+
+	return 0;
+}
+
+static int bcm6358_led_bind(struct udevice *parent)
+{
+	ofnode node;
+
+	dev_for_each_subnode(node, parent) {
+		struct led_uc_plat *uc_plat;
+		struct udevice *dev;
+		const char *label;
+		int ret;
+
+		label = ofnode_read_string(node, "label");
+		if (!label) {
+			debug("%s: node %s has no label\n", __func__,
+			      ofnode_get_name(node));
+			return -EINVAL;
+		}
+
+		ret = device_bind_driver_to_node(parent, "bcm6358-led",
+						 ofnode_get_name(node),
+						 node, &dev);
+		if (ret)
+			return ret;
+
+		uc_plat = dev_get_uclass_platdata(dev);
+		uc_plat->label = label;
+	}
+
+	return 0;
+}
+
+static const struct udevice_id bcm6358_led_ids[] = {
+	{ .compatible = "brcm,bcm6358-leds" },
+	{ /* sentinel */ }
+};
+
+U_BOOT_DRIVER(bcm6358_led) = {
+	.name = "bcm6358-led",
+	.id = UCLASS_LED,
+	.of_match = bcm6358_led_ids,
+	.bind = bcm6358_led_bind,
+	.probe = bcm6358_led_probe,
+	.priv_auto_alloc_size = sizeof(struct bcm6358_led_priv),
+	.ops = &bcm6358_led_ops,
+};

source/bootloader/u-boot-2020.01/drivers/led/led_bcm6858.c

@@ -0,0 +1,250 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * Copyright (C) 2019 Philippe Reynes <philippe.reynes@softathome.com>
+ *
+ * based on:
+ * drivers/led/led_bcm6328.c
+ * drivers/led/led_bcm6358.c
+ */
+
+#include <common.h>
+#include <dm.h>
+#include <errno.h>
+#include <led.h>
+#include <asm/io.h>
+#include <dm/lists.h>
+
+#define LEDS_MAX		32
+#define LEDS_WAIT		100
+
+/* LED Mode register */
+#define LED_MODE_REG		0x0
+#define LED_MODE_OFF		0
+#define LED_MODE_ON		1
+#define LED_MODE_MASK		1
+
+/* LED Controller Global settings register */
+#define LED_CTRL_REG			0x00
+#define LED_CTRL_MASK			0x1f
+#define LED_CTRL_LED_TEST_MODE		BIT(0)
+#define LED_CTRL_SERIAL_LED_DATA_PPOL	BIT(1)
+#define LED_CTRL_SERIAL_LED_CLK_POL	BIT(2)
+#define LED_CTRL_SERIAL_LED_EN_POL	BIT(3)
+#define LED_CTRL_SERIAL_LED_MSB_FIRST	BIT(4)
+
+/* LED Controller IP LED source select register */
+#define LED_HW_LED_EN_REG		0x08
+/* LED Flash control register0 */
+#define LED_FLASH_RATE_CONTROL_REG0	0x10
+/* Soft LED input register */
+#define LED_SW_LED_IP_REG		0xb8
+/* Soft LED input polarity register */
+#define LED_SW_LED_IP_PPOL_REG		0xbc
+
+struct bcm6858_led_priv {
+	void __iomem *regs;
+	u8 pin;
+};
+
+#ifdef CONFIG_LED_BLINK
+/*
+ * The value for flash rate are:
+ * 0 : no blinking
+ * 1 : rate is 25 Hz => 40 ms (period)
+ * 2 : rate is 12.5 Hz => 80 ms (period)
+ * 3 : rate is 6.25 Hz => 160 ms (period)
+ * 4 : rate is 3.125 Hz => 320 ms (period)
+ * 5 : rate is 1.5625 Hz => 640 ms (period)
+ * 6 : rate is 0.7815 Hz => 1280 ms (period)
+ * 7 : rate is 0.390625 Hz => 2560 ms (period)
+ */
+static const int bcm6858_flash_rate[8] = {
+	0, 40, 80, 160, 320, 640, 1280, 2560
+};
+
+static u32 bcm6858_flash_rate_value(int period_ms)
+{
+	unsigned long value = 7;
+	int i;
+
+	for (i = 0; i < ARRAY_SIZE(bcm6858_flash_rate); i++) {
+		if (period_ms <= bcm6858_flash_rate[i]) {
+			value = i;
+			break;
+		}
+	}
+
+	return value;
+}
+
+static int bcm6858_led_set_period(struct udevice *dev, int period_ms)
+{
+	struct bcm6858_led_priv *priv = dev_get_priv(dev);
+	u32 offset, shift, mask, value;
+
+	offset = (priv->pin / 8) * 4;
+	shift  = (priv->pin % 8) * 4;
+	mask   = 0x7 << shift;
+	value  = bcm6858_flash_rate_value(period_ms) << shift;
+
+	clrbits_32(priv->regs + LED_FLASH_RATE_CONTROL_REG0 + offset, mask);
+	setbits_32(priv->regs + LED_FLASH_RATE_CONTROL_REG0 + offset, value);
+
+	return 0;
+}
+#endif
+
+static enum led_state_t bcm6858_led_get_state(struct udevice *dev)
+{
+	struct bcm6858_led_priv *priv = dev_get_priv(dev);
+	enum led_state_t state = LEDST_OFF;
+	u32 sw_led_ip;
+
+	sw_led_ip = readl(priv->regs + LED_SW_LED_IP_REG);
+	if (sw_led_ip & (1 << priv->pin))
+		state = LEDST_ON;
+
+	return state;
+}
+
+static int bcm6858_led_set_state(struct udevice *dev, enum led_state_t state)
+{
+	struct bcm6858_led_priv *priv = dev_get_priv(dev);
+
+	switch (state) {
+	case LEDST_OFF:
+		clrbits_32(priv->regs + LED_SW_LED_IP_REG, (1 << priv->pin));
+#ifdef CONFIG_LED_BLINK
+		bcm6858_led_set_period(dev, 0);
+#endif
+		break;
+	case LEDST_ON:
+		setbits_32(priv->regs + LED_SW_LED_IP_REG, (1 << priv->pin));
+#ifdef CONFIG_LED_BLINK
+		bcm6858_led_set_period(dev, 0);
+#endif
+		break;
+	case LEDST_TOGGLE:
+		if (bcm6858_led_get_state(dev) == LEDST_OFF)
+			return bcm6858_led_set_state(dev, LEDST_ON);
+		else
+			return bcm6858_led_set_state(dev, LEDST_OFF);
+		break;
+#ifdef CONFIG_LED_BLINK
+	case LEDST_BLINK:
+		setbits_32(priv->regs + LED_SW_LED_IP_REG, (1 << priv->pin));
+		break;
+#endif
+	default:
+		return -EINVAL;
+	}
+
+	return 0;
+}
+
+static const struct led_ops bcm6858_led_ops = {
+	.get_state = bcm6858_led_get_state,
+	.set_state = bcm6858_led_set_state,
+#ifdef CONFIG_LED_BLINK
+	.set_period = bcm6858_led_set_period,
+#endif
+};
+
+static int bcm6858_led_probe(struct udevice *dev)
+{
+	struct led_uc_plat *uc_plat = dev_get_uclass_platdata(dev);
+
+	/* Top-level LED node */
+	if (!uc_plat->label) {
+		void __iomem *regs;
+		u32 set_bits = 0;
+
+		regs = dev_remap_addr(dev);
+		if (!regs)
+			return -EINVAL;
+
+		if (dev_read_bool(dev, "brcm,serial-led-msb-first"))
+			set_bits |= LED_CTRL_SERIAL_LED_MSB_FIRST;
+		if (dev_read_bool(dev, "brcm,serial-led-en-pol"))
+			set_bits |= LED_CTRL_SERIAL_LED_EN_POL;
+		if (dev_read_bool(dev, "brcm,serial-led-clk-pol"))
+			set_bits |= LED_CTRL_SERIAL_LED_CLK_POL;
+		if (dev_read_bool(dev, "brcm,serial-led-data-ppol"))
+			set_bits |= LED_CTRL_SERIAL_LED_DATA_PPOL;
+		if (dev_read_bool(dev, "brcm,led-test-mode"))
+			set_bits |= LED_CTRL_LED_TEST_MODE;
+
+		clrsetbits_32(regs + LED_CTRL_REG, ~0, set_bits);
+	} else {
+		struct bcm6858_led_priv *priv = dev_get_priv(dev);
+		void __iomem *regs;
+		unsigned int pin;
+
+		regs = dev_remap_addr(dev_get_parent(dev));
+		if (!regs)
+			return -EINVAL;
+
+		pin = dev_read_u32_default(dev, "reg", LEDS_MAX);
+		if (pin >= LEDS_MAX)
+			return -EINVAL;
+
+		priv->regs = regs;
+		priv->pin = pin;
+
+		/* this led is managed by software */
+		clrbits_32(regs + LED_HW_LED_EN_REG, 1 << pin);
+
+		/* configure the polarity */
+		if (dev_read_bool(dev, "active-low"))
+			clrbits_32(regs + LED_SW_LED_IP_PPOL_REG, 1 << pin);
+		else
+			setbits_32(regs + LED_SW_LED_IP_PPOL_REG, 1 << pin);
+	}
+
+	return 0;
+}
+
+static int bcm6858_led_bind(struct udevice *parent)
+{
+	ofnode node;
+
+	dev_for_each_subnode(node, parent) {
+		struct led_uc_plat *uc_plat;
+		struct udevice *dev;
+		const char *label;
+		int ret;
+
+		label = ofnode_read_string(node, "label");
+		if (!label) {
+			debug("%s: node %s has no label\n", __func__,
+			      ofnode_get_name(node));
+			return -EINVAL;
+		}
+
+		ret = device_bind_driver_to_node(parent, "bcm6858-led",
+						 ofnode_get_name(node),
+						 node, &dev);
+		if (ret)
+			return ret;
+
+		uc_plat = dev_get_uclass_platdata(dev);
+		uc_plat->label = label;
+	}
+
+	return 0;
+}
+
+static const struct udevice_id bcm6858_led_ids[] = {
+	{ .compatible = "brcm,bcm6858-leds" },
+	{ /* sentinel */ }
+};
+
+U_BOOT_DRIVER(bcm6858_led) = {
+	.name = "bcm6858-led",
+	.id = UCLASS_LED,
+	.of_match = bcm6858_led_ids,
+	.bind = bcm6858_led_bind,
+	.probe = bcm6858_led_probe,
+	.priv_auto_alloc_size = sizeof(struct bcm6858_led_priv),
+	.ops = &bcm6858_led_ops,
+};

source/bootloader/u-boot-2020.01/drivers/led/led_gpio.c

@@ -0,0 +1,136 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * Copyright (c) 2015 Google, Inc
+ * Written by Simon Glass <sjg@chromium.org>
+ */
+
+#include <common.h>
+#include <dm.h>
+#include <errno.h>
+#include <led.h>
+#include <asm/gpio.h>
+#include <dm/lists.h>
+
+struct led_gpio_priv {
+	struct gpio_desc gpio;
+};
+
+static int gpio_led_set_state(struct udevice *dev, enum led_state_t state)
+{
+	struct led_gpio_priv *priv = dev_get_priv(dev);
+	int ret;
+
+	if (!dm_gpio_is_valid(&priv->gpio))
+		return -EREMOTEIO;
+	switch (state) {
+	case LEDST_OFF:
+	case LEDST_ON:
+		break;
+	case LEDST_TOGGLE:
+		ret = dm_gpio_get_value(&priv->gpio);
+		if (ret < 0)
+			return ret;
+		state = !ret;
+		break;
+	default:
+		return -ENOSYS;
+	}
+
+	return dm_gpio_set_value(&priv->gpio, state);
+}
+
+static enum led_state_t gpio_led_get_state(struct udevice *dev)
+{
+	struct led_gpio_priv *priv = dev_get_priv(dev);
+	int ret;
+
+	if (!dm_gpio_is_valid(&priv->gpio))
+		return -EREMOTEIO;
+	ret = dm_gpio_get_value(&priv->gpio);
+	if (ret < 0)
+		return ret;
+
+	return ret ? LEDST_ON : LEDST_OFF;
+}
+
+static int led_gpio_probe(struct udevice *dev)
+{
+	struct led_uc_plat *uc_plat = dev_get_uclass_platdata(dev);
+	struct led_gpio_priv *priv = dev_get_priv(dev);
+	int ret;
+
+	/* Ignore the top-level LED node */
+	if (!uc_plat->label)
+		return 0;
+
+	ret = gpio_request_by_name(dev, "gpios", 0, &priv->gpio, GPIOD_IS_OUT);
+	if (ret)
+		return ret;
+
+	return 0;
+}
+
+static int led_gpio_remove(struct udevice *dev)
+{
+	/*
+	 * The GPIO driver may have already been removed. We will need to
+	 * address this more generally.
+	 */
+#ifndef CONFIG_SANDBOX
+	struct led_gpio_priv *priv = dev_get_priv(dev);
+
+	if (dm_gpio_is_valid(&priv->gpio))
+		dm_gpio_free(dev, &priv->gpio);
+#endif
+
+	return 0;
+}
+
+static int led_gpio_bind(struct udevice *parent)
+{
+	struct udevice *dev;
+	ofnode node;
+	int ret;
+
+	dev_for_each_subnode(node, parent) {
+		struct led_uc_plat *uc_plat;
+		const char *label;
+
+		label = ofnode_read_string(node, "label");
+		if (!label) {
+			debug("%s: node %s has no label\n", __func__,
+			      ofnode_get_name(node));
+			return -EINVAL;
+		}
+		ret = device_bind_driver_to_node(parent, "gpio_led",
+						 ofnode_get_name(node),
+						 node, &dev);
+		if (ret)
+			return ret;
+		uc_plat = dev_get_uclass_platdata(dev);
+		uc_plat->label = label;
+	}
+
+	return 0;
+}
+
+static const struct led_ops gpio_led_ops = {
+	.set_state	= gpio_led_set_state,
+	.get_state	= gpio_led_get_state,
+};
+
+static const struct udevice_id led_gpio_ids[] = {
+	{ .compatible = "gpio-leds" },
+	{ }
+};
+
+U_BOOT_DRIVER(led_gpio) = {
+	.name	= "gpio_led",
+	.id	= UCLASS_LED,
+	.of_match = led_gpio_ids,
+	.ops	= &gpio_led_ops,
+	.priv_auto_alloc_size = sizeof(struct led_gpio_priv),
+	.bind	= led_gpio_bind,
+	.probe	= led_gpio_probe,
+	.remove	= led_gpio_remove,
+};