diff options
6 files changed, 0 insertions, 1091 deletions
diff --git a/target/linux/realtek/patches-5.15/001-5.13-dt-bindings-gpio-binding-for-realtek-otto-gpio.patch b/target/linux/realtek/patches-5.15/001-5.13-dt-bindings-gpio-binding-for-realtek-otto-gpio.patch deleted file mode 100644 index 80b806d89f..0000000000 --- a/target/linux/realtek/patches-5.15/001-5.13-dt-bindings-gpio-binding-for-realtek-otto-gpio.patch +++ /dev/null @@ -1,103 +0,0 @@ -From a362c0ce64866939c3daa17c76943cfed555b065 Mon Sep 17 00:00:00 2001 -From: Sander Vanheule <sander@svanheule.net> -Date: Tue, 30 Mar 2021 19:48:42 +0200 -Subject: dt-bindings: gpio: Binding for Realtek Otto GPIO - -Add a binding description for Realtek's GPIO controller found on several -of their MIPS-based SoCs (codenamed Otto), such as the RTL838x and -RTL839x series of switch SoCs. - -A fallback binding 'realtek,otto-gpio' is provided for cases where the -actual port ordering is not known yet, and enabling the interrupt -controller may result in uncaught interrupts. - -Signed-off-by: Sander Vanheule <sander@svanheule.net> -Reviewed-by: Linus Walleij <linus.walleij@linaro.org> -Reviewed-by: Rob Herring <robh@kernel.org> -Signed-off-by: Bartosz Golaszewski <bgolaszewski@baylibre.com> ---- - .../bindings/gpio/realtek,otto-gpio.yaml | 78 ++++++++++++++++++++++ - 1 file changed, 78 insertions(+) - create mode 100644 Documentation/devicetree/bindings/gpio/realtek,otto-gpio.yaml - ---- /dev/null -+++ b/Documentation/devicetree/bindings/gpio/realtek,otto-gpio.yaml -@@ -0,0 +1,78 @@ -+# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause -+%YAML 1.2 -+--- -+$id: http://devicetree.org/schemas/gpio/realtek,otto-gpio.yaml# -+$schema: http://devicetree.org/meta-schemas/core.yaml# -+ -+title: Realtek Otto GPIO controller -+ -+maintainers: -+ - Sander Vanheule <sander@svanheule.net> -+ - Bert Vermeulen <bert@biot.com> -+ -+description: | -+ Realtek's GPIO controller on their MIPS switch SoCs (Otto platform) consists -+ of two banks of 32 GPIOs. These GPIOs can generate edge-triggered interrupts. -+ Each bank's interrupts are cascased into one interrupt line on the parent -+ interrupt controller, if provided. -+ This binding allows defining a single bank in the devicetree. The interrupt -+ controller is not supported on the fallback compatible name, which only -+ allows for GPIO port use. -+ -+properties: -+ $nodename: -+ pattern: "^gpio@[0-9a-f]+$" -+ -+ compatible: -+ items: -+ - enum: -+ - realtek,rtl8380-gpio -+ - realtek,rtl8390-gpio -+ - const: realtek,otto-gpio -+ -+ reg: -+ maxItems: 1 -+ -+ "#gpio-cells": -+ const: 2 -+ -+ gpio-controller: true -+ -+ ngpios: -+ minimum: 1 -+ maximum: 32 -+ -+ interrupt-controller: true -+ -+ "#interrupt-cells": -+ const: 2 -+ -+ interrupts: -+ maxItems: 1 -+ -+required: -+ - compatible -+ - reg -+ - "#gpio-cells" -+ - gpio-controller -+ -+additionalProperties: false -+ -+dependencies: -+ interrupt-controller: [ interrupts ] -+ -+examples: -+ - | -+ gpio@3500 { -+ compatible = "realtek,rtl8380-gpio", "realtek,otto-gpio"; -+ reg = <0x3500 0x1c>; -+ gpio-controller; -+ #gpio-cells = <2>; -+ ngpios = <24>; -+ interrupt-controller; -+ #interrupt-cells = <2>; -+ interrupt-parent = <&rtlintc>; -+ interrupts = <23>; -+ }; -+ -+... diff --git a/target/linux/realtek/patches-5.15/002-5.13-gpio-add-realtek-otto-gpio-support.patch b/target/linux/realtek/patches-5.15/002-5.13-gpio-add-realtek-otto-gpio-support.patch deleted file mode 100644 index 62e4338cbb..0000000000 --- a/target/linux/realtek/patches-5.15/002-5.13-gpio-add-realtek-otto-gpio-support.patch +++ /dev/null @@ -1,394 +0,0 @@ -From f0f7d662e8514169c90d3d84cd6df773b2983088 Mon Sep 17 00:00:00 2001 -From: Sander Vanheule <sander@svanheule.net> -Date: Tue, 30 Mar 2021 19:48:43 +0200 -Subject: gpio: Add Realtek Otto GPIO support - -Realtek MIPS SoCs (platform name Otto) have GPIO controllers with up to -64 GPIOs, divided over two banks. Each bank has a set of registers for -32 GPIOs, with support for edge-triggered interrupts. - -Each GPIO bank consists of four 8-bit GPIO ports (ABCD and EFGH). Most -registers pack one bit per GPIO, except for the IMR register, which -packs two bits per GPIO (AB-CD). - -Although the byte order is currently assumed to have port A..D at offset -0x0..0x3, this has been observed to be reversed on other, Lexra-based, -SoCs (e.g. RTL8196E/97D/97F). - -Interrupt support is disabled for the fallback devicetree-compatible -'realtek,otto-gpio'. This allows for quick support of GPIO banks in -which the byte order would be unknown. In this case, the port ordering -in the IMR registers may not match the reversed order in the other -registers (DCBA, and BA-DC or DC-BA). - -Signed-off-by: Sander Vanheule <sander@svanheule.net> -Reviewed-by: Linus Walleij <linus.walleij@linaro.org> -Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com> -Signed-off-by: Bartosz Golaszewski <bgolaszewski@baylibre.com> ---- - drivers/gpio/Kconfig | 13 ++ - drivers/gpio/Makefile | 1 + - drivers/gpio/gpio-realtek-otto.c | 325 +++++++++++++++++++++++++++++++++++++++ - 3 files changed, 339 insertions(+) - create mode 100644 drivers/gpio/gpio-realtek-otto.c - ---- a/drivers/gpio/Kconfig -+++ b/drivers/gpio/Kconfig -@@ -489,6 +489,19 @@ config GPIO_RDA - help - Say Y here to support RDA Micro GPIO controller. - -+config GPIO_REALTEK_OTTO -+ tristate "Realtek Otto GPIO support" -+ depends on MACH_REALTEK_RTL -+ default MACH_REALTEK_RTL -+ select GPIO_GENERIC -+ select GPIOLIB_IRQCHIP -+ help -+ The GPIO controller on the Otto MIPS platform supports up to two -+ banks of 32 GPIOs, with edge triggered interrupts. The 32 GPIOs -+ are grouped in four 8-bit wide ports. -+ -+ When built as a module, the module will be called realtek_otto_gpio. -+ - config GPIO_REG - bool - help ---- a/drivers/gpio/Makefile -+++ b/drivers/gpio/Makefile -@@ -125,6 +125,7 @@ obj-$(CONFIG_GPIO_RC5T583) += gpio-rc5t - obj-$(CONFIG_GPIO_RCAR) += gpio-rcar.o - obj-$(CONFIG_GPIO_RDA) += gpio-rda.o - obj-$(CONFIG_GPIO_RDC321X) += gpio-rdc321x.o -+obj-$(CONFIG_GPIO_REALTEK_OTTO) += gpio-realtek-otto.o - obj-$(CONFIG_GPIO_REG) += gpio-reg.o - obj-$(CONFIG_ARCH_SA1100) += gpio-sa1100.o - obj-$(CONFIG_GPIO_SAMA5D2_PIOBU) += gpio-sama5d2-piobu.o ---- /dev/null -+++ b/drivers/gpio/gpio-realtek-otto.c -@@ -0,0 +1,325 @@ -+// SPDX-License-Identifier: GPL-2.0-only -+ -+#include <linux/gpio/driver.h> -+#include <linux/irq.h> -+#include <linux/minmax.h> -+#include <linux/mod_devicetable.h> -+#include <linux/module.h> -+#include <linux/platform_device.h> -+#include <linux/property.h> -+ -+/* -+ * Total register block size is 0x1C for one bank of four ports (A, B, C, D). -+ * An optional second bank, with ports E, F, G, and H, may be present, starting -+ * at register offset 0x1C. -+ */ -+ -+/* -+ * Pin select: (0) "normal", (1) "dedicate peripheral" -+ * Not used on RTL8380/RTL8390, peripheral selection is managed by control bits -+ * in the peripheral registers. -+ */ -+#define REALTEK_GPIO_REG_CNR 0x00 -+/* Clear bit (0) for input, set bit (1) for output */ -+#define REALTEK_GPIO_REG_DIR 0x08 -+#define REALTEK_GPIO_REG_DATA 0x0C -+/* Read bit for IRQ status, write 1 to clear IRQ */ -+#define REALTEK_GPIO_REG_ISR 0x10 -+/* Two bits per GPIO in IMR registers */ -+#define REALTEK_GPIO_REG_IMR 0x14 -+#define REALTEK_GPIO_REG_IMR_AB 0x14 -+#define REALTEK_GPIO_REG_IMR_CD 0x18 -+#define REALTEK_GPIO_IMR_LINE_MASK GENMASK(1, 0) -+#define REALTEK_GPIO_IRQ_EDGE_FALLING 1 -+#define REALTEK_GPIO_IRQ_EDGE_RISING 2 -+#define REALTEK_GPIO_IRQ_EDGE_BOTH 3 -+ -+#define REALTEK_GPIO_MAX 32 -+#define REALTEK_GPIO_PORTS_PER_BANK 4 -+ -+/** -+ * realtek_gpio_ctrl - Realtek Otto GPIO driver data -+ * -+ * @gc: Associated gpio_chip instance -+ * @base: Base address of the register block for a GPIO bank -+ * @lock: Lock for accessing the IRQ registers and values -+ * @intr_mask: Mask for interrupts lines -+ * @intr_type: Interrupt type selection -+ * -+ * Because the interrupt mask register (IMR) combines the function of IRQ type -+ * selection and masking, two extra values are stored. @intr_mask is used to -+ * mask/unmask the interrupts for a GPIO port, and @intr_type is used to store -+ * the selected interrupt types. The logical AND of these values is written to -+ * IMR on changes. -+ */ -+struct realtek_gpio_ctrl { -+ struct gpio_chip gc; -+ void __iomem *base; -+ raw_spinlock_t lock; -+ u16 intr_mask[REALTEK_GPIO_PORTS_PER_BANK]; -+ u16 intr_type[REALTEK_GPIO_PORTS_PER_BANK]; -+}; -+ -+/* Expand with more flags as devices with other quirks are added */ -+enum realtek_gpio_flags { -+ /* -+ * Allow disabling interrupts, for cases where the port order is -+ * unknown. This may result in a port mismatch between ISR and IMR. -+ * An interrupt would appear to come from a different line than the -+ * line the IRQ handler was assigned to, causing uncaught interrupts. -+ */ -+ GPIO_INTERRUPTS_DISABLED = BIT(0), -+}; -+ -+static struct realtek_gpio_ctrl *irq_data_to_ctrl(struct irq_data *data) -+{ -+ struct gpio_chip *gc = irq_data_get_irq_chip_data(data); -+ -+ return container_of(gc, struct realtek_gpio_ctrl, gc); -+} -+ -+/* -+ * Normal port order register access -+ * -+ * Port information is stored with the first port at offset 0, followed by the -+ * second, etc. Most registers store one bit per GPIO and use a u8 value per -+ * port. The two interrupt mask registers store two bits per GPIO, so use u16 -+ * values. -+ */ -+static void realtek_gpio_write_imr(struct realtek_gpio_ctrl *ctrl, -+ unsigned int port, u16 irq_type, u16 irq_mask) -+{ -+ iowrite16(irq_type & irq_mask, ctrl->base + REALTEK_GPIO_REG_IMR + 2 * port); -+} -+ -+static void realtek_gpio_clear_isr(struct realtek_gpio_ctrl *ctrl, -+ unsigned int port, u8 mask) -+{ -+ iowrite8(mask, ctrl->base + REALTEK_GPIO_REG_ISR + port); -+} -+ -+static u8 realtek_gpio_read_isr(struct realtek_gpio_ctrl *ctrl, unsigned int port) -+{ -+ return ioread8(ctrl->base + REALTEK_GPIO_REG_ISR + port); -+} -+ -+/* Set the rising and falling edge mask bits for a GPIO port pin */ -+static u16 realtek_gpio_imr_bits(unsigned int pin, u16 value) -+{ -+ return (value & REALTEK_GPIO_IMR_LINE_MASK) << 2 * pin; -+} -+ -+static void realtek_gpio_irq_ack(struct irq_data *data) -+{ -+ struct realtek_gpio_ctrl *ctrl = irq_data_to_ctrl(data); -+ irq_hw_number_t line = irqd_to_hwirq(data); -+ unsigned int port = line / 8; -+ unsigned int port_pin = line % 8; -+ -+ realtek_gpio_clear_isr(ctrl, port, BIT(port_pin)); -+} -+ -+static void realtek_gpio_irq_unmask(struct irq_data *data) -+{ -+ struct realtek_gpio_ctrl *ctrl = irq_data_to_ctrl(data); -+ unsigned int line = irqd_to_hwirq(data); -+ unsigned int port = line / 8; -+ unsigned int port_pin = line % 8; -+ unsigned long flags; -+ u16 m; -+ -+ raw_spin_lock_irqsave(&ctrl->lock, flags); -+ m = ctrl->intr_mask[port]; -+ m |= realtek_gpio_imr_bits(port_pin, REALTEK_GPIO_IMR_LINE_MASK); -+ ctrl->intr_mask[port] = m; -+ realtek_gpio_write_imr(ctrl, port, ctrl->intr_type[port], m); -+ raw_spin_unlock_irqrestore(&ctrl->lock, flags); -+} -+ -+static void realtek_gpio_irq_mask(struct irq_data *data) -+{ -+ struct realtek_gpio_ctrl *ctrl = irq_data_to_ctrl(data); -+ unsigned int line = irqd_to_hwirq(data); -+ unsigned int port = line / 8; -+ unsigned int port_pin = line % 8; -+ unsigned long flags; -+ u16 m; -+ -+ raw_spin_lock_irqsave(&ctrl->lock, flags); -+ m = ctrl->intr_mask[port]; -+ m &= ~realtek_gpio_imr_bits(port_pin, REALTEK_GPIO_IMR_LINE_MASK); -+ ctrl->intr_mask[port] = m; -+ realtek_gpio_write_imr(ctrl, port, ctrl->intr_type[port], m); -+ raw_spin_unlock_irqrestore(&ctrl->lock, flags); -+} -+ -+static int realtek_gpio_irq_set_type(struct irq_data *data, unsigned int flow_type) -+{ -+ struct realtek_gpio_ctrl *ctrl = irq_data_to_ctrl(data); -+ unsigned int line = irqd_to_hwirq(data); -+ unsigned int port = line / 8; -+ unsigned int port_pin = line % 8; -+ unsigned long flags; -+ u16 type, t; -+ -+ switch (flow_type & IRQ_TYPE_SENSE_MASK) { -+ case IRQ_TYPE_EDGE_FALLING: -+ type = REALTEK_GPIO_IRQ_EDGE_FALLING; -+ break; -+ case IRQ_TYPE_EDGE_RISING: -+ type = REALTEK_GPIO_IRQ_EDGE_RISING; -+ break; -+ case IRQ_TYPE_EDGE_BOTH: -+ type = REALTEK_GPIO_IRQ_EDGE_BOTH; -+ break; -+ default: -+ return -EINVAL; -+ } -+ -+ irq_set_handler_locked(data, handle_edge_irq); -+ -+ raw_spin_lock_irqsave(&ctrl->lock, flags); -+ t = ctrl->intr_type[port]; -+ t &= ~realtek_gpio_imr_bits(port_pin, REALTEK_GPIO_IMR_LINE_MASK); -+ t |= realtek_gpio_imr_bits(port_pin, type); -+ ctrl->intr_type[port] = t; -+ realtek_gpio_write_imr(ctrl, port, t, ctrl->intr_mask[port]); -+ raw_spin_unlock_irqrestore(&ctrl->lock, flags); -+ -+ return 0; -+} -+ -+static void realtek_gpio_irq_handler(struct irq_desc *desc) -+{ -+ struct gpio_chip *gc = irq_desc_get_handler_data(desc); -+ struct realtek_gpio_ctrl *ctrl = gpiochip_get_data(gc); -+ struct irq_chip *irq_chip = irq_desc_get_chip(desc); -+ unsigned int lines_done; -+ unsigned int port_pin_count; -+ unsigned int irq; -+ unsigned long status; -+ int offset; -+ -+ chained_irq_enter(irq_chip, desc); -+ -+ for (lines_done = 0; lines_done < gc->ngpio; lines_done += 8) { -+ status = realtek_gpio_read_isr(ctrl, lines_done / 8); -+ port_pin_count = min(gc->ngpio - lines_done, 8U); -+ for_each_set_bit(offset, &status, port_pin_count) { -+ irq = irq_find_mapping(gc->irq.domain, offset); -+ generic_handle_irq(irq); -+ } -+ } -+ -+ chained_irq_exit(irq_chip, desc); -+} -+ -+static int realtek_gpio_irq_init(struct gpio_chip *gc) -+{ -+ struct realtek_gpio_ctrl *ctrl = gpiochip_get_data(gc); -+ unsigned int port; -+ -+ for (port = 0; (port * 8) < gc->ngpio; port++) { -+ realtek_gpio_write_imr(ctrl, port, 0, 0); -+ realtek_gpio_clear_isr(ctrl, port, GENMASK(7, 0)); -+ } -+ -+ return 0; -+} -+ -+static struct irq_chip realtek_gpio_irq_chip = { -+ .name = "realtek-otto-gpio", -+ .irq_ack = realtek_gpio_irq_ack, -+ .irq_mask = realtek_gpio_irq_mask, -+ .irq_unmask = realtek_gpio_irq_unmask, -+ .irq_set_type = realtek_gpio_irq_set_type, -+}; -+ -+static const struct of_device_id realtek_gpio_of_match[] = { -+ { -+ .compatible = "realtek,otto-gpio", -+ .data = (void *)GPIO_INTERRUPTS_DISABLED, -+ }, -+ { -+ .compatible = "realtek,rtl8380-gpio", -+ }, -+ { -+ .compatible = "realtek,rtl8390-gpio", -+ }, -+ {} -+}; -+MODULE_DEVICE_TABLE(of, realtek_gpio_of_match); -+ -+static int realtek_gpio_probe(struct platform_device *pdev) -+{ -+ struct device *dev = &pdev->dev; -+ unsigned int dev_flags; -+ struct gpio_irq_chip *girq; -+ struct realtek_gpio_ctrl *ctrl; -+ u32 ngpios; -+ int err, irq; -+ -+ ctrl = devm_kzalloc(dev, sizeof(*ctrl), GFP_KERNEL); -+ if (!ctrl) -+ return -ENOMEM; -+ -+ dev_flags = (unsigned int) device_get_match_data(dev); -+ -+ ngpios = REALTEK_GPIO_MAX; -+ device_property_read_u32(dev, "ngpios", &ngpios); -+ -+ if (ngpios > REALTEK_GPIO_MAX) { -+ dev_err(&pdev->dev, "invalid ngpios (max. %d)\n", -+ REALTEK_GPIO_MAX); -+ return -EINVAL; -+ } -+ -+ ctrl->base = devm_platform_ioremap_resource(pdev, 0); -+ if (IS_ERR(ctrl->base)) -+ return PTR_ERR(ctrl->base); -+ -+ raw_spin_lock_init(&ctrl->lock); -+ -+ err = bgpio_init(&ctrl->gc, dev, 4, -+ ctrl->base + REALTEK_GPIO_REG_DATA, NULL, NULL, -+ ctrl->base + REALTEK_GPIO_REG_DIR, NULL, -+ BGPIOF_BIG_ENDIAN_BYTE_ORDER); -+ if (err) { -+ dev_err(dev, "unable to init generic GPIO"); -+ return err; -+ } -+ -+ ctrl->gc.ngpio = ngpios; -+ ctrl->gc.owner = THIS_MODULE; -+ -+ irq = platform_get_irq_optional(pdev, 0); -+ if (!(dev_flags & GPIO_INTERRUPTS_DISABLED) && irq > 0) { -+ girq = &ctrl->gc.irq; -+ girq->chip = &realtek_gpio_irq_chip; -+ girq->default_type = IRQ_TYPE_NONE; -+ girq->handler = handle_bad_irq; -+ girq->parent_handler = realtek_gpio_irq_handler; -+ girq->num_parents = 1; -+ girq->parents = devm_kcalloc(dev, girq->num_parents, -+ sizeof(*girq->parents), GFP_KERNEL); -+ if (!girq->parents) -+ return -ENOMEM; -+ girq->parents[0] = irq; -+ girq->init_hw = realtek_gpio_irq_init; -+ } -+ -+ return devm_gpiochip_add_data(dev, &ctrl->gc, ctrl); -+} -+ -+static struct platform_driver realtek_gpio_driver = { -+ .driver = { -+ .name = "realtek-otto-gpio", -+ .of_match_table = realtek_gpio_of_match, -+ }, -+ .probe = realtek_gpio_probe, -+}; -+module_platform_driver(realtek_gpio_driver); -+ -+MODULE_DESCRIPTION("Realtek Otto GPIO support"); -+MODULE_AUTHOR("Sander Vanheule <sander@svanheule.net>"); -+MODULE_LICENSE("GPL v2"); diff --git a/target/linux/realtek/patches-5.15/003-5.12-spi-realtek-rtl838x-rtl839x-spi-controller.patch b/target/linux/realtek/patches-5.15/003-5.12-spi-realtek-rtl838x-rtl839x-spi-controller.patch deleted file mode 100644 index 325e904994..0000000000 --- a/target/linux/realtek/patches-5.15/003-5.12-spi-realtek-rtl838x-rtl839x-spi-controller.patch +++ /dev/null @@ -1,57 +0,0 @@ -From 6acbd614c2c8d3b8de5fb7605d6e24b9b3a8a17b Mon Sep 17 00:00:00 2001 -From: Bert Vermeulen <bert@biot.com> -Date: Wed, 20 Jan 2021 14:59:27 +0100 -Subject: spi: Realtek RTL838x/RTL839x SPI controller - -Signed-off-by: Bert Vermeulen <bert@biot.com> -Link: https://lore.kernel.org/r/20210120135928.246054-2-bert@biot.com -Signed-off-by: Mark Brown <broonie@kernel.org> ---- - .../devicetree/bindings/spi/realtek,rtl-spi.yaml | 41 ++++++++++++++++++++++ - 1 file changed, 41 insertions(+) - create mode 100644 Documentation/devicetree/bindings/spi/realtek,rtl-spi.yaml - ---- /dev/null -+++ b/Documentation/devicetree/bindings/spi/realtek,rtl-spi.yaml -@@ -0,0 +1,41 @@ -+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) -+%YAML 1.2 -+--- -+$id: http://devicetree.org/schemas/spi/realtek,rtl-spi.yaml# -+$schema: http://devicetree.org/meta-schemas/core.yaml# -+ -+title: Realtek RTL838x/RTL839x SPI controller -+ -+maintainers: -+ - Bert Vermeulen <bert@biot.com> -+ - Birger Koblitz <mail@birger-koblitz.de> -+ -+allOf: -+ - $ref: "spi-controller.yaml#" -+ -+properties: -+ compatible: -+ oneOf: -+ - const: realtek,rtl8380-spi -+ - const: realtek,rtl8382-spi -+ - const: realtek,rtl8391-spi -+ - const: realtek,rtl8392-spi -+ - const: realtek,rtl8393-spi -+ -+ reg: -+ maxItems: 1 -+ -+required: -+ - compatible -+ - reg -+ -+unevaluatedProperties: false -+ -+examples: -+ - | -+ spi: spi@1200 { -+ compatible = "realtek,rtl8382-spi"; -+ reg = <0x1200 0x100>; -+ #address-cells = <1>; -+ #size-cells = <0>; -+ }; diff --git a/target/linux/realtek/patches-5.15/004-5.12-spi-realtek-rtl-add-support-for-realtek-rtl838x-rtl839x-spi-controllers.patch b/target/linux/realtek/patches-5.15/004-5.12-spi-realtek-rtl-add-support-for-realtek-rtl838x-rtl839x-spi-controllers.patch deleted file mode 100644 index 090847baad..0000000000 --- a/target/linux/realtek/patches-5.15/004-5.12-spi-realtek-rtl-add-support-for-realtek-rtl838x-rtl839x-spi-controllers.patch +++ /dev/null @@ -1,248 +0,0 @@ -From a8af5cc2ff1e804694629a8ef320935629dd15ba Mon Sep 17 00:00:00 2001 -From: Bert Vermeulen <bert@biot.com> -Date: Wed, 20 Jan 2021 14:59:28 +0100 -Subject: spi: realtek-rtl: Add support for Realtek RTL838x/RTL839x SPI - controllers - -This driver likely also supports earlier (RTL8196) and later (RTL93xx) -SoCs. - -The SPI hardware in these SoCs is specifically intended for connecting NOR -bootflash chips, and only used for that in dozens of examined devices. -However boiled down to basics, it's really just a half-duplex SPI -controller. - -The hardware appears to have a vestigial second chip-select control, but -it hasn't been seen in the wild and is thus not supported. - -Signed-off-by: Bert Vermeulen <bert@biot.com> -Link: https://lore.kernel.org/r/20210120135928.246054-3-bert@biot.com -Signed-off-by: Mark Brown <broonie@kernel.org> ---- - drivers/spi/Makefile | 1 + - drivers/spi/spi-realtek-rtl.c | 209 ++++++++++++++++++++++++++++++++++++++++++ - 2 files changed, 210 insertions(+) - create mode 100644 drivers/spi/spi-realtek-rtl.c - ---- a/drivers/spi/Makefile -+++ b/drivers/spi/Makefile -@@ -94,6 +94,7 @@ obj-$(CONFIG_SPI_QCOM_QSPI) += spi-qcom - obj-$(CONFIG_SPI_QUP) += spi-qup.o - obj-$(CONFIG_SPI_ROCKCHIP) += spi-rockchip.o - obj-$(CONFIG_SPI_RB4XX) += spi-rb4xx.o -+obj-$(CONFIG_MACH_REALTEK_RTL) += spi-realtek-rtl.o - obj-$(CONFIG_SPI_RPCIF) += spi-rpc-if.o - obj-$(CONFIG_SPI_RSPI) += spi-rspi.o - obj-$(CONFIG_SPI_S3C24XX) += spi-s3c24xx-hw.o ---- /dev/null -+++ b/drivers/spi/spi-realtek-rtl.c -@@ -0,0 +1,209 @@ -+// SPDX-License-Identifier: GPL-2.0-only -+ -+#include <linux/module.h> -+#include <linux/platform_device.h> -+#include <linux/mod_devicetable.h> -+#include <linux/spi/spi.h> -+ -+struct rtspi { -+ void __iomem *base; -+}; -+ -+/* SPI Flash Configuration Register */ -+#define RTL_SPI_SFCR 0x00 -+#define RTL_SPI_SFCR_RBO BIT(28) -+#define RTL_SPI_SFCR_WBO BIT(27) -+ -+/* SPI Flash Control and Status Register */ -+#define RTL_SPI_SFCSR 0x08 -+#define RTL_SPI_SFCSR_CSB0 BIT(31) -+#define RTL_SPI_SFCSR_CSB1 BIT(30) -+#define RTL_SPI_SFCSR_RDY BIT(27) -+#define RTL_SPI_SFCSR_CS BIT(24) -+#define RTL_SPI_SFCSR_LEN_MASK ~(0x03 << 28) -+#define RTL_SPI_SFCSR_LEN1 (0x00 << 28) -+#define RTL_SPI_SFCSR_LEN4 (0x03 << 28) -+ -+/* SPI Flash Data Register */ -+#define RTL_SPI_SFDR 0x0c -+ -+#define REG(x) (rtspi->base + x) -+ -+ -+static void rt_set_cs(struct spi_device *spi, bool active) -+{ -+ struct rtspi *rtspi = spi_controller_get_devdata(spi->controller); -+ u32 value; -+ -+ /* CS0 bit is active low */ -+ value = readl(REG(RTL_SPI_SFCSR)); -+ if (active) -+ value |= RTL_SPI_SFCSR_CSB0; -+ else -+ value &= ~RTL_SPI_SFCSR_CSB0; -+ writel(value, REG(RTL_SPI_SFCSR)); -+} -+ -+static void set_size(struct rtspi *rtspi, int size) -+{ -+ u32 value; -+ -+ value = readl(REG(RTL_SPI_SFCSR)); -+ value &= RTL_SPI_SFCSR_LEN_MASK; -+ if (size == 4) -+ value |= RTL_SPI_SFCSR_LEN4; -+ else if (size == 1) -+ value |= RTL_SPI_SFCSR_LEN1; -+ writel(value, REG(RTL_SPI_SFCSR)); -+} -+ -+static inline void wait_ready(struct rtspi *rtspi) -+{ -+ while (!(readl(REG(RTL_SPI_SFCSR)) & RTL_SPI_SFCSR_RDY)) -+ cpu_relax(); -+} -+static void send4(struct rtspi *rtspi, const u32 *buf) -+{ -+ wait_ready(rtspi); -+ set_size(rtspi, 4); -+ writel(*buf, REG(RTL_SPI_SFDR)); -+} -+ -+static void send1(struct rtspi *rtspi, const u8 *buf) -+{ -+ wait_ready(rtspi); -+ set_size(rtspi, 1); -+ writel(buf[0] << 24, REG(RTL_SPI_SFDR)); -+} -+ -+static void rcv4(struct rtspi *rtspi, u32 *buf) -+{ -+ wait_ready(rtspi); -+ set_size(rtspi, 4); -+ *buf = readl(REG(RTL_SPI_SFDR)); -+} -+ -+static void rcv1(struct rtspi *rtspi, u8 *buf) -+{ -+ wait_ready(rtspi); -+ set_size(rtspi, 1); -+ *buf = readl(REG(RTL_SPI_SFDR)) >> 24; -+} -+ -+static int transfer_one(struct spi_controller *ctrl, struct spi_device *spi, -+ struct spi_transfer *xfer) -+{ -+ struct rtspi *rtspi = spi_controller_get_devdata(ctrl); -+ void *rx_buf; -+ const void *tx_buf; -+ int cnt; -+ -+ tx_buf = xfer->tx_buf; -+ rx_buf = xfer->rx_buf; -+ cnt = xfer->len; -+ if (tx_buf) { -+ while (cnt >= 4) { -+ send4(rtspi, tx_buf); -+ tx_buf += 4; -+ cnt -= 4; -+ } -+ while (cnt) { -+ send1(rtspi, tx_buf); -+ tx_buf++; -+ cnt--; -+ } -+ } else if (rx_buf) { -+ while (cnt >= 4) { -+ rcv4(rtspi, rx_buf); -+ rx_buf += 4; -+ cnt -= 4; -+ } -+ while (cnt) { -+ rcv1(rtspi, rx_buf); -+ rx_buf++; -+ cnt--; -+ } -+ } -+ -+ spi_finalize_current_transfer(ctrl); -+ -+ return 0; -+} -+ -+static void init_hw(struct rtspi *rtspi) -+{ -+ u32 value; -+ -+ /* Turn on big-endian byte ordering */ -+ value = readl(REG(RTL_SPI_SFCR)); -+ value |= RTL_SPI_SFCR_RBO | RTL_SPI_SFCR_WBO; -+ writel(value, REG(RTL_SPI_SFCR)); -+ -+ value = readl(REG(RTL_SPI_SFCSR)); -+ /* Permanently disable CS1, since it's never used */ -+ value |= RTL_SPI_SFCSR_CSB1; -+ /* Select CS0 for use */ -+ value &= RTL_SPI_SFCSR_CS; -+ writel(value, REG(RTL_SPI_SFCSR)); -+} -+ -+static int realtek_rtl_spi_probe(struct platform_device *pdev) -+{ -+ struct spi_controller *ctrl; -+ struct rtspi *rtspi; -+ int err; -+ -+ ctrl = devm_spi_alloc_master(&pdev->dev, sizeof(*rtspi)); -+ if (!ctrl) { -+ dev_err(&pdev->dev, "Error allocating SPI controller\n"); -+ return -ENOMEM; -+ } -+ platform_set_drvdata(pdev, ctrl); -+ rtspi = spi_controller_get_devdata(ctrl); -+ -+ rtspi->base = devm_platform_get_and_ioremap_resource(pdev, 0, NULL); -+ if (IS_ERR(rtspi->base)) { -+ dev_err(&pdev->dev, "Could not map SPI register address"); -+ return -ENOMEM; -+ } -+ -+ init_hw(rtspi); -+ -+ ctrl->dev.of_node = pdev->dev.of_node; -+ ctrl->flags = SPI_CONTROLLER_HALF_DUPLEX; -+ ctrl->set_cs = rt_set_cs; -+ ctrl->transfer_one = transfer_one; -+ -+ err = devm_spi_register_controller(&pdev->dev, ctrl); -+ if (err) { -+ dev_err(&pdev->dev, "Could not register SPI controller\n"); -+ return -ENODEV; -+ } -+ -+ return 0; -+} -+ -+ -+static const struct of_device_id realtek_rtl_spi_of_ids[] = { -+ { .compatible = "realtek,rtl8380-spi" }, -+ { .compatible = "realtek,rtl8382-spi" }, -+ { .compatible = "realtek,rtl8391-spi" }, -+ { .compatible = "realtek,rtl8392-spi" }, -+ { .compatible = "realtek,rtl8393-spi" }, -+ { /* sentinel */ } -+}; -+MODULE_DEVICE_TABLE(of, realtek_rtl_spi_of_ids); -+ -+static struct platform_driver realtek_rtl_spi_driver = { -+ .probe = realtek_rtl_spi_probe, -+ .driver = { -+ .name = "realtek-rtl-spi", -+ .of_match_table = realtek_rtl_spi_of_ids, -+ }, -+}; -+ -+module_platform_driver(realtek_rtl_spi_driver); -+ -+MODULE_LICENSE("GPL v2"); -+MODULE_AUTHOR("Bert Vermeulen <bert@biot.com>"); -+MODULE_DESCRIPTION("Realtek RTL SPI driver"); diff --git a/target/linux/realtek/patches-5.15/005-5.12-dt-bindings-interrupt-controller-add-realtek-rtl838x-rtl839x-support.patch b/target/linux/realtek/patches-5.15/005-5.12-dt-bindings-interrupt-controller-add-realtek-rtl838x-rtl839x-support.patch deleted file mode 100644 index 165545a220..0000000000 --- a/target/linux/realtek/patches-5.15/005-5.12-dt-bindings-interrupt-controller-add-realtek-rtl838x-rtl839x-support.patch +++ /dev/null @@ -1,78 +0,0 @@ -From 4a2b92a5d3519fc2c1edda4d4aa0e05bff41e8de Mon Sep 17 00:00:00 2001 -From: Bert Vermeulen <bert@biot.com> -Date: Fri, 22 Jan 2021 21:42:23 +0100 -Subject: dt-bindings: interrupt-controller: Add Realtek RTL838x/RTL839x - support - -Document the binding for the Realtek RTL838x/RTL839x interrupt controller. - -Reviewed-by: Rob Herring <robh@kernel.org> -Signed-off-by: Bert Vermeulen <bert@biot.com> -[maz: Add a commit message, as the author couldn't be bothered...] -Signed-off-by: Marc Zyngier <maz@kernel.org> -Link: https://lore.kernel.org/r/20210122204224.509124-2-bert@biot.com ---- - .../interrupt-controller/realtek,rtl-intc.yaml | 57 ++++++++++++++++++++++ - 1 file changed, 57 insertions(+) - create mode 100644 Documentation/devicetree/bindings/interrupt-controller/realtek,rtl-intc.yaml - ---- /dev/null -+++ b/Documentation/devicetree/bindings/interrupt-controller/realtek,rtl-intc.yaml -@@ -0,0 +1,57 @@ -+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) -+%YAML 1.2 -+--- -+$id: http://devicetree.org/schemas/interrupt-controller/realtek,rtl-intc.yaml# -+$schema: http://devicetree.org/meta-schemas/core.yaml# -+ -+title: Realtek RTL SoC interrupt controller devicetree bindings -+ -+maintainers: -+ - Birger Koblitz <mail@birger-koblitz.de> -+ - Bert Vermeulen <bert@biot.com> -+ - John Crispin <john@phrozen.org> -+ -+properties: -+ compatible: -+ const: realtek,rtl-intc -+ -+ "#interrupt-cells": -+ const: 1 -+ -+ reg: -+ maxItems: 1 -+ -+ interrupts: -+ maxItems: 1 -+ -+ interrupt-controller: true -+ -+ "#address-cells": -+ const: 0 -+ -+ interrupt-map: -+ description: Describes mapping from SoC interrupts to CPU interrupts -+ -+required: -+ - compatible -+ - reg -+ - "#interrupt-cells" -+ - interrupt-controller -+ - "#address-cells" -+ - interrupt-map -+ -+additionalProperties: false -+ -+examples: -+ - | -+ intc: interrupt-controller@3000 { -+ compatible = "realtek,rtl-intc"; -+ #interrupt-cells = <1>; -+ interrupt-controller; -+ reg = <0x3000 0x20>; -+ #address-cells = <0>; -+ interrupt-map = -+ <31 &cpuintc 2>, -+ <30 &cpuintc 1>, -+ <29 &cpuintc 5>; -+ }; diff --git a/target/linux/realtek/patches-5.15/006-5.12-irqchip-add-support-for-realtek-rtl838x-rtl839x-interrupt-controller.patch b/target/linux/realtek/patches-5.15/006-5.12-irqchip-add-support-for-realtek-rtl838x-rtl839x-interrupt-controller.patch deleted file mode 100644 index 753c41eb2f..0000000000 --- a/target/linux/realtek/patches-5.15/006-5.12-irqchip-add-support-for-realtek-rtl838x-rtl839x-interrupt-controller.patch +++ /dev/null @@ -1,211 +0,0 @@ -From 9f3a0f34b84ad1b9a8f2bdae44b66f16685b2143 Mon Sep 17 00:00:00 2001 -From: Bert Vermeulen <bert@biot.com> -Date: Fri, 22 Jan 2021 21:42:24 +0100 -Subject: irqchip: Add support for Realtek RTL838x/RTL839x interrupt controller - -This is a standard IRQ driver with only status and mask registers. - -The mapping from SoC interrupts (18-31) to MIPS core interrupts is -done via an interrupt-map in device tree. - -Signed-off-by: Bert Vermeulen <bert@biot.com> -Signed-off-by: Birger Koblitz <mail@birger-koblitz.de> -Acked-by: John Crispin <john@phrozen.org> -Signed-off-by: Marc Zyngier <maz@kernel.org> -Link: https://lore.kernel.org/r/20210122204224.509124-3-bert@biot.com ---- - drivers/irqchip/Makefile | 1 + - drivers/irqchip/irq-realtek-rtl.c | 180 ++++++++++++++++++++++++++++++++++++++ - 2 files changed, 181 insertions(+) - create mode 100644 drivers/irqchip/irq-realtek-rtl.c - ---- a/drivers/irqchip/Makefile -+++ b/drivers/irqchip/Makefile -@@ -114,3 +114,4 @@ obj-$(CONFIG_LOONGSON_PCH_PIC) += irq-l - obj-$(CONFIG_LOONGSON_PCH_MSI) += irq-loongson-pch-msi.o - obj-$(CONFIG_MST_IRQ) += irq-mst-intc.o - obj-$(CONFIG_SL28CPLD_INTC) += irq-sl28cpld.o -+obj-$(CONFIG_MACH_REALTEK_RTL) += irq-realtek-rtl.o ---- /dev/null -+++ b/drivers/irqchip/irq-realtek-rtl.c -@@ -0,0 +1,180 @@ -+// SPDX-License-Identifier: GPL-2.0-only -+/* -+ * Copyright (C) 2020 Birger Koblitz <mail@birger-koblitz.de> -+ * Copyright (C) 2020 Bert Vermeulen <bert@biot.com> -+ * Copyright (C) 2020 John Crispin <john@phrozen.org> -+ */ -+ -+#include <linux/of_irq.h> -+#include <linux/irqchip.h> -+#include <linux/spinlock.h> -+#include <linux/of_address.h> -+#include <linux/irqchip/chained_irq.h> -+ -+/* Global Interrupt Mask Register */ -+#define RTL_ICTL_GIMR 0x00 -+/* Global Interrupt Status Register */ -+#define RTL_ICTL_GISR 0x04 -+/* Interrupt Routing Registers */ -+#define RTL_ICTL_IRR0 0x08 -+#define RTL_ICTL_IRR1 0x0c -+#define RTL_ICTL_IRR2 0x10 -+#define RTL_ICTL_IRR3 0x14 -+ -+#define REG(x) (realtek_ictl_base + x) -+ -+static DEFINE_RAW_SPINLOCK(irq_lock); -+static void __iomem *realtek_ictl_base; -+ -+static void realtek_ictl_unmask_irq(struct irq_data *i) -+{ -+ unsigned long flags; -+ u32 value; -+ -+ raw_spin_lock_irqsave(&irq_lock, flags); -+ -+ value = readl(REG(RTL_ICTL_GIMR)); -+ value |= BIT(i->hwirq); -+ writel(value, REG(RTL_ICTL_GIMR)); -+ -+ raw_spin_unlock_irqrestore(&irq_lock, flags); -+} -+ -+static void realtek_ictl_mask_irq(struct irq_data *i) -+{ -+ unsigned long flags; -+ u32 value; -+ -+ raw_spin_lock_irqsave(&irq_lock, flags); -+ -+ value = readl(REG(RTL_ICTL_GIMR)); -+ value &= ~BIT(i->hwirq); -+ writel(value, REG(RTL_ICTL_GIMR)); -+ -+ raw_spin_unlock_irqrestore(&irq_lock, flags); -+} -+ -+static struct irq_chip realtek_ictl_irq = { -+ .name = "realtek-rtl-intc", -+ .irq_mask = realtek_ictl_mask_irq, -+ .irq_unmask = realtek_ictl_unmask_irq, -+}; -+ -+static int intc_map(struct irq_domain *d, unsigned int irq, irq_hw_number_t hw) -+{ -+ irq_set_chip_and_handler(hw, &realtek_ictl_irq, handle_level_irq); -+ -+ return 0; -+} -+ -+static const struct irq_domain_ops irq_domain_ops = { -+ .map = intc_map, -+ .xlate = irq_domain_xlate_onecell, -+}; -+ -+static void realtek_irq_dispatch(struct irq_desc *desc) -+{ -+ struct irq_chip *chip = irq_desc_get_chip(desc); -+ struct irq_domain *domain; -+ unsigned int pending; -+ -+ chained_irq_enter(chip, desc); -+ pending = readl(REG(RTL_ICTL_GIMR)) & readl(REG(RTL_ICTL_GISR)); -+ if (unlikely(!pending)) { -+ spurious_interrupt(); -+ goto out; -+ } -+ domain = irq_desc_get_handler_data(desc); -+ generic_handle_irq(irq_find_mapping(domain, __ffs(pending))); -+ -+out: -+ chained_irq_exit(chip, desc); -+} -+ -+/* -+ * SoC interrupts are cascaded to MIPS CPU interrupts according to the -+ * interrupt-map in the device tree. Each SoC interrupt gets 4 bits for -+ * the CPU interrupt in an Interrupt Routing Register. Max 32 SoC interrupts -+ * thus go into 4 IRRs. -+ */ -+static int __init map_interrupts(struct device_node *node, struct irq_domain *domain) -+{ -+ struct device_node *cpu_ictl; -+ const __be32 *imap; -+ u32 imaplen, soc_int, cpu_int, tmp, regs[4]; -+ int ret, i, irr_regs[] = { -+ RTL_ICTL_IRR3, -+ RTL_ICTL_IRR2, -+ RTL_ICTL_IRR1, -+ RTL_ICTL_IRR0, -+ }; -+ u8 mips_irqs_set; -+ -+ ret = of_property_read_u32(node, "#address-cells", &tmp); -+ if (ret || tmp) -+ return -EINVAL; -+ -+ imap = of_get_property(node, "interrupt-map", &imaplen); -+ if (!imap || imaplen % 3) -+ return -EINVAL; -+ -+ mips_irqs_set = 0; -+ memset(regs, 0, sizeof(regs)); -+ for (i = 0; i < imaplen; i += 3 * sizeof(u32)) { -+ soc_int = be32_to_cpup(imap); -+ if (soc_int > 31) -+ return -EINVAL; -+ -+ cpu_ictl = of_find_node_by_phandle(be32_to_cpup(imap + 1)); -+ if (!cpu_ictl) -+ return -EINVAL; -+ ret = of_property_read_u32(cpu_ictl, "#interrupt-cells", &tmp); -+ if (ret || tmp != 1) -+ return -EINVAL; -+ of_node_put(cpu_ictl); -+ -+ cpu_int = be32_to_cpup(imap + 2); -+ if (cpu_int > 7) -+ return -EINVAL; -+ -+ if (!(mips_irqs_set & BIT(cpu_int))) { -+ irq_set_chained_handler_and_data(cpu_int, realtek_irq_dispatch, -+ domain); -+ mips_irqs_set |= BIT(cpu_int); -+ } -+ -+ regs[(soc_int * 4) / 32] |= cpu_int << (soc_int * 4) % 32; -+ imap += 3; -+ } -+ -+ for (i = 0; i < 4; i++) -+ writel(regs[i], REG(irr_regs[i])); -+ -+ return 0; -+} -+ -+static int __init realtek_rtl_of_init(struct device_node *node, struct device_node *parent) -+{ -+ struct irq_domain *domain; -+ int ret; -+ -+ realtek_ictl_base = of_iomap(node, 0); -+ if (!realtek_ictl_base) -+ return -ENXIO; -+ -+ /* Disable all cascaded interrupts */ -+ writel(0, REG(RTL_ICTL_GIMR)); -+ -+ domain = irq_domain_add_simple(node, 32, 0, -+ &irq_domain_ops, NULL); -+ -+ ret = map_interrupts(node, domain); -+ if (ret) { -+ pr_err("invalid interrupt map\n"); -+ return ret; -+ } -+ -+ return 0; -+} -+ -+IRQCHIP_DECLARE(realtek_rtl_intc, "realtek,rtl-intc", realtek_rtl_of_init); |