diff options
Diffstat (limited to 'target/linux/generic/backport-5.10/731-v5.12-net-dsa-mt7530-MT7530-optional-GPIO-support.patch')
| -rw-r--r-- | target/linux/generic/backport-5.10/731-v5.12-net-dsa-mt7530-MT7530-optional-GPIO-support.patch | 181 |
1 files changed, 0 insertions, 181 deletions
diff --git a/target/linux/generic/backport-5.10/731-v5.12-net-dsa-mt7530-MT7530-optional-GPIO-support.patch b/target/linux/generic/backport-5.10/731-v5.12-net-dsa-mt7530-MT7530-optional-GPIO-support.patch deleted file mode 100644 index bd60df37e3..0000000000 --- a/target/linux/generic/backport-5.10/731-v5.12-net-dsa-mt7530-MT7530-optional-GPIO-support.patch +++ /dev/null @@ -1,181 +0,0 @@ -From 429a0edeefd88cbfca5c417dfb8561047bb50769 Mon Sep 17 00:00:00 2001 -From: DENG Qingfang <dqfext@gmail.com> -Date: Mon, 25 Jan 2021 12:43:22 +0800 -Subject: [PATCH] net: dsa: mt7530: MT7530 optional GPIO support - -MT7530's LED controller can drive up to 15 LED/GPIOs. - -Add support for GPIO control and allow users to use its GPIOs by -setting gpio-controller property in device tree. - -Signed-off-by: DENG Qingfang <dqfext@gmail.com> -Reviewed-by: Linus Walleij <linus.walleij@linaro.org> -Reviewed-by: Andrew Lunn <andrew@lunn.ch> -Signed-off-by: Jakub Kicinski <kuba@kernel.org> ---- - drivers/net/dsa/mt7530.c | 110 +++++++++++++++++++++++++++++++++++++++ - drivers/net/dsa/mt7530.h | 20 +++++++ - 2 files changed, 130 insertions(+) - ---- a/drivers/net/dsa/mt7530.c -+++ b/drivers/net/dsa/mt7530.c -@@ -18,6 +18,7 @@ - #include <linux/regulator/consumer.h> - #include <linux/reset.h> - #include <linux/gpio/consumer.h> -+#include <linux/gpio/driver.h> - #include <net/dsa.h> - - #include "mt7530.h" -@@ -1537,6 +1538,109 @@ mtk_get_tag_protocol(struct dsa_switch * - } - } - -+static inline u32 -+mt7530_gpio_to_bit(unsigned int offset) -+{ -+ /* Map GPIO offset to register bit -+ * [ 2: 0] port 0 LED 0..2 as GPIO 0..2 -+ * [ 6: 4] port 1 LED 0..2 as GPIO 3..5 -+ * [10: 8] port 2 LED 0..2 as GPIO 6..8 -+ * [14:12] port 3 LED 0..2 as GPIO 9..11 -+ * [18:16] port 4 LED 0..2 as GPIO 12..14 -+ */ -+ return BIT(offset + offset / 3); -+} -+ -+static int -+mt7530_gpio_get(struct gpio_chip *gc, unsigned int offset) -+{ -+ struct mt7530_priv *priv = gpiochip_get_data(gc); -+ u32 bit = mt7530_gpio_to_bit(offset); -+ -+ return !!(mt7530_read(priv, MT7530_LED_GPIO_DATA) & bit); -+} -+ -+static void -+mt7530_gpio_set(struct gpio_chip *gc, unsigned int offset, int value) -+{ -+ struct mt7530_priv *priv = gpiochip_get_data(gc); -+ u32 bit = mt7530_gpio_to_bit(offset); -+ -+ if (value) -+ mt7530_set(priv, MT7530_LED_GPIO_DATA, bit); -+ else -+ mt7530_clear(priv, MT7530_LED_GPIO_DATA, bit); -+} -+ -+static int -+mt7530_gpio_get_direction(struct gpio_chip *gc, unsigned int offset) -+{ -+ struct mt7530_priv *priv = gpiochip_get_data(gc); -+ u32 bit = mt7530_gpio_to_bit(offset); -+ -+ return (mt7530_read(priv, MT7530_LED_GPIO_DIR) & bit) ? -+ GPIO_LINE_DIRECTION_OUT : GPIO_LINE_DIRECTION_IN; -+} -+ -+static int -+mt7530_gpio_direction_input(struct gpio_chip *gc, unsigned int offset) -+{ -+ struct mt7530_priv *priv = gpiochip_get_data(gc); -+ u32 bit = mt7530_gpio_to_bit(offset); -+ -+ mt7530_clear(priv, MT7530_LED_GPIO_OE, bit); -+ mt7530_clear(priv, MT7530_LED_GPIO_DIR, bit); -+ -+ return 0; -+} -+ -+static int -+mt7530_gpio_direction_output(struct gpio_chip *gc, unsigned int offset, int value) -+{ -+ struct mt7530_priv *priv = gpiochip_get_data(gc); -+ u32 bit = mt7530_gpio_to_bit(offset); -+ -+ mt7530_set(priv, MT7530_LED_GPIO_DIR, bit); -+ -+ if (value) -+ mt7530_set(priv, MT7530_LED_GPIO_DATA, bit); -+ else -+ mt7530_clear(priv, MT7530_LED_GPIO_DATA, bit); -+ -+ mt7530_set(priv, MT7530_LED_GPIO_OE, bit); -+ -+ return 0; -+} -+ -+static int -+mt7530_setup_gpio(struct mt7530_priv *priv) -+{ -+ struct device *dev = priv->dev; -+ struct gpio_chip *gc; -+ -+ gc = devm_kzalloc(dev, sizeof(*gc), GFP_KERNEL); -+ if (!gc) -+ return -ENOMEM; -+ -+ mt7530_write(priv, MT7530_LED_GPIO_OE, 0); -+ mt7530_write(priv, MT7530_LED_GPIO_DIR, 0); -+ mt7530_write(priv, MT7530_LED_IO_MODE, 0); -+ -+ gc->label = "mt7530"; -+ gc->parent = dev; -+ gc->owner = THIS_MODULE; -+ gc->get_direction = mt7530_gpio_get_direction; -+ gc->direction_input = mt7530_gpio_direction_input; -+ gc->direction_output = mt7530_gpio_direction_output; -+ gc->get = mt7530_gpio_get; -+ gc->set = mt7530_gpio_set; -+ gc->base = -1; -+ gc->ngpio = 15; -+ gc->can_sleep = true; -+ -+ return devm_gpiochip_add_data(dev, gc, priv); -+} -+ - static int - mt7530_setup(struct dsa_switch *ds) - { -@@ -1679,6 +1783,12 @@ mt7530_setup(struct dsa_switch *ds) - } - } - -+ if (of_property_read_bool(priv->dev->of_node, "gpio-controller")) { -+ ret = mt7530_setup_gpio(priv); -+ if (ret) -+ return ret; -+ } -+ - mt7530_setup_port5(ds, interface); - - /* Flush the FDB table */ ---- a/drivers/net/dsa/mt7530.h -+++ b/drivers/net/dsa/mt7530.h -@@ -529,6 +529,26 @@ enum mt7531_clk_skew { - #define MT7531_GPIO12_RG_RXD3_MASK GENMASK(19, 16) - #define MT7531_EXT_P_MDIO_12 (2 << 16) - -+/* Registers for LED GPIO control (MT7530 only) -+ * All registers follow this pattern: -+ * [ 2: 0] port 0 -+ * [ 6: 4] port 1 -+ * [10: 8] port 2 -+ * [14:12] port 3 -+ * [18:16] port 4 -+ */ -+ -+/* LED enable, 0: Disable, 1: Enable (Default) */ -+#define MT7530_LED_EN 0x7d00 -+/* LED mode, 0: GPIO mode, 1: PHY mode (Default) */ -+#define MT7530_LED_IO_MODE 0x7d04 -+/* GPIO direction, 0: Input, 1: Output */ -+#define MT7530_LED_GPIO_DIR 0x7d10 -+/* GPIO output enable, 0: Disable, 1: Enable */ -+#define MT7530_LED_GPIO_OE 0x7d14 -+/* GPIO value, 0: Low, 1: High */ -+#define MT7530_LED_GPIO_DATA 0x7d18 -+ - #define MT7530_CREV 0x7ffc - #define CHIP_NAME_SHIFT 16 - #define MT7530_ID 0x7530 |