Contents of the files folder were upstreamed in 6.1 so make it 5.15 only.
Signed-off-by: Robert Marko <robimarko@gmail.com>
--- /dev/null
+# SPDX-License-Identifier: GPL-2.0-only
+obj-y += airoha.o
--- /dev/null
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * Device Tree support for Airoha SoCs
+ *
+ * Copyright (c) 2022 Felix Fietkau <nbd@nbd.name>
+ */
+#include <asm/mach/arch.h>
+
+static const char * const airoha_board_dt_compat[] = {
+ "airoha,en7523",
+ NULL,
+};
+
+DT_MACHINE_START(MEDIATEK_DT, "Airoha Cortex-A53 (Device Tree)")
+ .dt_compat = airoha_board_dt_compat,
+MACHINE_END
--- /dev/null
+// SPDX-License-Identifier: GPL-2.0-only
+
+#include <linux/delay.h>
+#include <linux/clk-provider.h>
+#include <linux/of.h>
+#include <linux/of_address.h>
+#include <linux/of_device.h>
+#include <linux/platform_device.h>
+#include <dt-bindings/clock/en7523-clk.h>
+
+#define REG_PCI_CONTROL 0x88
+#define REG_PCI_CONTROL_PERSTOUT BIT(29)
+#define REG_PCI_CONTROL_PERSTOUT1 BIT(26)
+#define REG_PCI_CONTROL_REFCLK_EN1 BIT(22)
+#define REG_GSW_CLK_DIV_SEL 0x1b4
+#define REG_EMI_CLK_DIV_SEL 0x1b8
+#define REG_BUS_CLK_DIV_SEL 0x1bc
+#define REG_SPI_CLK_DIV_SEL 0x1c4
+#define REG_SPI_CLK_FREQ_SEL 0x1c8
+#define REG_NPU_CLK_DIV_SEL 0x1fc
+#define REG_CRYPTO_CLKSRC 0x200
+#define REG_RESET_CONTROL 0x834
+#define REG_RESET_CONTROL_PCIEHB BIT(29)
+#define REG_RESET_CONTROL_PCIE1 BIT(27)
+#define REG_RESET_CONTROL_PCIE2 BIT(26)
+
+struct en_clk_desc {
+ int id;
+ const char *name;
+ u32 base_reg;
+ u8 base_bits;
+ u8 base_shift;
+ union {
+ const unsigned int *base_values;
+ unsigned int base_value;
+ };
+ size_t n_base_values;
+
+ u16 div_reg;
+ u8 div_bits;
+ u8 div_shift;
+ u16 div_val0;
+ u8 div_step;
+};
+
+struct en_clk_gate {
+ void __iomem *base;
+ struct clk_hw hw;
+};
+
+static const u32 gsw_base[] = { 400000000, 500000000 };
+static const u32 emi_base[] = { 333000000, 400000000 };
+static const u32 bus_base[] = { 500000000, 540000000 };
+static const u32 slic_base[] = { 100000000, 3125000 };
+static const u32 npu_base[] = { 333000000, 400000000, 500000000 };
+
+static const struct en_clk_desc en7523_base_clks[] = {
+ {
+ .id = EN7523_CLK_GSW,
+ .name = "gsw",
+
+ .base_reg = REG_GSW_CLK_DIV_SEL,
+ .base_bits = 1,
+ .base_shift = 8,
+ .base_values = gsw_base,
+ .n_base_values = ARRAY_SIZE(gsw_base),
+
+ .div_bits = 3,
+ .div_shift = 0,
+ .div_step = 1,
+ }, {
+ .id = EN7523_CLK_EMI,
+ .name = "emi",
+
+ .base_reg = REG_EMI_CLK_DIV_SEL,
+ .base_bits = 1,
+ .base_shift = 8,
+ .base_values = emi_base,
+ .n_base_values = ARRAY_SIZE(emi_base),
+
+ .div_bits = 3,
+ .div_shift = 0,
+ .div_step = 1,
+ }, {
+ .id = EN7523_CLK_BUS,
+ .name = "bus",
+
+ .base_reg = REG_BUS_CLK_DIV_SEL,
+ .base_bits = 1,
+ .base_shift = 8,
+ .base_values = bus_base,
+ .n_base_values = ARRAY_SIZE(bus_base),
+
+ .div_bits = 3,
+ .div_shift = 0,
+ .div_step = 1,
+ }, {
+ .id = EN7523_CLK_SLIC,
+ .name = "slic",
+
+ .base_reg = REG_SPI_CLK_FREQ_SEL,
+ .base_bits = 1,
+ .base_shift = 0,
+ .base_values = slic_base,
+ .n_base_values = ARRAY_SIZE(slic_base),
+
+ .div_reg = REG_SPI_CLK_DIV_SEL,
+ .div_bits = 5,
+ .div_shift = 24,
+ .div_val0 = 20,
+ .div_step = 2,
+ }, {
+ .id = EN7523_CLK_SPI,
+ .name = "spi",
+
+ .base_reg = REG_SPI_CLK_DIV_SEL,
+
+ .base_value = 400000000,
+
+ .div_bits = 5,
+ .div_shift = 8,
+ .div_val0 = 40,
+ .div_step = 2,
+ }, {
+ .id = EN7523_CLK_NPU,
+ .name = "npu",
+
+ .base_reg = REG_NPU_CLK_DIV_SEL,
+ .base_bits = 2,
+ .base_shift = 8,
+ .base_values = npu_base,
+ .n_base_values = ARRAY_SIZE(npu_base),
+
+ .div_bits = 3,
+ .div_shift = 0,
+ .div_step = 1,
+ }, {
+ .id = EN7523_CLK_CRYPTO,
+ .name = "crypto",
+
+ .base_reg = REG_CRYPTO_CLKSRC,
+ .base_bits = 1,
+ .base_shift = 8,
+ .base_values = emi_base,
+ .n_base_values = ARRAY_SIZE(emi_base),
+ }
+};
+
+static const struct of_device_id of_match_clk_en7523[] = {
+ { .compatible = "airoha,en7523-scu", },
+ { /* sentinel */ }
+};
+
+static unsigned int en7523_get_base_rate(void __iomem *base, unsigned int i)
+{
+ const struct en_clk_desc *desc = &en7523_base_clks[i];
+ u32 val;
+
+ if (!desc->base_bits)
+ return desc->base_value;
+
+ val = readl(base + desc->base_reg);
+ val >>= desc->base_shift;
+ val &= (1 << desc->base_bits) - 1;
+
+ if (val >= desc->n_base_values)
+ return 0;
+
+ return desc->base_values[val];
+}
+
+static u32 en7523_get_div(void __iomem *base, int i)
+{
+ const struct en_clk_desc *desc = &en7523_base_clks[i];
+ u32 reg, val;
+
+ if (!desc->div_bits)
+ return 1;
+
+ reg = desc->div_reg ? desc->div_reg : desc->base_reg;
+ val = readl(base + reg);
+ val >>= desc->div_shift;
+ val &= (1 << desc->div_bits) - 1;
+
+ if (!val && desc->div_val0)
+ return desc->div_val0;
+
+ return (val + 1) * desc->div_step;
+}
+
+static int en7523_pci_is_enabled(struct clk_hw *hw)
+{
+ struct en_clk_gate *cg = container_of(hw, struct en_clk_gate, hw);
+
+ return !!(readl(cg->base + REG_PCI_CONTROL) & REG_PCI_CONTROL_REFCLK_EN1);
+}
+
+static int en7523_pci_prepare(struct clk_hw *hw)
+{
+ struct en_clk_gate *cg = container_of(hw, struct en_clk_gate, hw);
+ void __iomem *np_base = cg->base;
+ u32 val, mask;
+
+ /* Need to pull device low before reset */
+ val = readl(np_base + REG_PCI_CONTROL);
+ val &= ~(REG_PCI_CONTROL_PERSTOUT1 | REG_PCI_CONTROL_PERSTOUT);
+ writel(val, np_base + REG_PCI_CONTROL);
+ usleep_range(1000, 2000);
+
+ /* Enable PCIe port 1 */
+ val |= REG_PCI_CONTROL_REFCLK_EN1;
+ writel(val, np_base + REG_PCI_CONTROL);
+ usleep_range(1000, 2000);
+
+ /* Reset to default */
+ val = readl(np_base + REG_RESET_CONTROL);
+ mask = REG_RESET_CONTROL_PCIE1 | REG_RESET_CONTROL_PCIE2 |
+ REG_RESET_CONTROL_PCIEHB;
+ writel(val & ~mask, np_base + REG_RESET_CONTROL);
+ usleep_range(1000, 2000);
+ writel(val | mask, np_base + REG_RESET_CONTROL);
+ msleep(100);
+ writel(val & ~mask, np_base + REG_RESET_CONTROL);
+ usleep_range(5000, 10000);
+
+ /* Release device */
+ mask = REG_PCI_CONTROL_PERSTOUT1 | REG_PCI_CONTROL_PERSTOUT;
+ val = readl(np_base + REG_PCI_CONTROL);
+ writel(val & ~mask, np_base + REG_PCI_CONTROL);
+ usleep_range(1000, 2000);
+ writel(val | mask, np_base + REG_PCI_CONTROL);
+ msleep(250);
+
+ return 0;
+}
+
+static void en7523_pci_unprepare(struct clk_hw *hw)
+{
+ struct en_clk_gate *cg = container_of(hw, struct en_clk_gate, hw);
+ void __iomem *np_base = cg->base;
+ u32 val;
+
+ val = readl(np_base + REG_PCI_CONTROL);
+ val &= ~REG_PCI_CONTROL_REFCLK_EN1;
+ writel(val, np_base + REG_PCI_CONTROL);
+}
+
+static struct clk_hw *en7523_register_pcie_clk(struct device *dev,
+ void __iomem *np_base)
+{
+ static const struct clk_ops pcie_gate_ops = {
+ .is_enabled = en7523_pci_is_enabled,
+ .prepare = en7523_pci_prepare,
+ .unprepare = en7523_pci_unprepare,
+ };
+ struct clk_init_data init = {
+ .name = "pcie",
+ .ops = &pcie_gate_ops,
+ };
+ struct en_clk_gate *cg;
+
+ cg = devm_kzalloc(dev, sizeof(*cg), GFP_KERNEL);
+ if (!cg)
+ return NULL;
+
+ cg->base = np_base;
+ cg->hw.init = &init;
+ en7523_pci_unprepare(&cg->hw);
+
+ if (clk_hw_register(dev, &cg->hw))
+ return NULL;
+
+ return &cg->hw;
+}
+
+static void en7523_register_clocks(struct device *dev, struct clk_hw_onecell_data *clk_data,
+ void __iomem *base, void __iomem *np_base)
+{
+ struct clk_hw *hw;
+ u32 rate;
+ int i;
+
+ for (i = 0; i < ARRAY_SIZE(en7523_base_clks); i++) {
+ const struct en_clk_desc *desc = &en7523_base_clks[i];
+
+ rate = en7523_get_base_rate(base, i);
+ rate /= en7523_get_div(base, i);
+
+ hw = clk_hw_register_fixed_rate(dev, desc->name, NULL, 0, rate);
+ if (IS_ERR(hw)) {
+ pr_err("Failed to register clk %s: %ld\n",
+ desc->name, PTR_ERR(hw));
+ continue;
+ }
+
+ clk_data->hws[desc->id] = hw;
+ }
+
+ hw = en7523_register_pcie_clk(dev, np_base);
+ clk_data->hws[EN7523_CLK_PCIE] = hw;
+
+ clk_data->num = EN7523_NUM_CLOCKS;
+}
+
+static int en7523_clk_probe(struct platform_device *pdev)
+{
+ struct device_node *node = pdev->dev.of_node;
+ struct clk_hw_onecell_data *clk_data;
+ void __iomem *base, *np_base;
+ int r;
+
+ base = devm_platform_ioremap_resource(pdev, 0);
+ if (IS_ERR(base))
+ return PTR_ERR(base);
+
+ np_base = devm_platform_ioremap_resource(pdev, 1);
+ if (IS_ERR(np_base))
+ return PTR_ERR(np_base);
+
+ clk_data = devm_kzalloc(&pdev->dev,
+ struct_size(clk_data, hws, EN7523_NUM_CLOCKS),
+ GFP_KERNEL);
+ if (!clk_data)
+ return -ENOMEM;
+
+ en7523_register_clocks(&pdev->dev, clk_data, base, np_base);
+
+ r = of_clk_add_hw_provider(node, of_clk_hw_onecell_get, clk_data);
+ if (r)
+ dev_err(&pdev->dev,
+ "could not register clock provider: %s: %d\n",
+ pdev->name, r);
+
+ return r;
+}
+
+static struct platform_driver clk_en7523_drv = {
+ .probe = en7523_clk_probe,
+ .driver = {
+ .name = "clk-en7523",
+ .of_match_table = of_match_clk_en7523,
+ .suppress_bind_attrs = true,
+ },
+};
+
+static int __init clk_en7523_init(void)
+{
+ return platform_driver_register(&clk_en7523_drv);
+}
+
+arch_initcall(clk_en7523_init);
--- /dev/null
+// SPDX-License-Identifier: GPL-2.0-only
+
+#include <linux/types.h>
+#include <linux/io.h>
+#include <linux/bits.h>
+#include <linux/gpio/driver.h>
+#include <linux/mod_devicetable.h>
+#include <linux/module.h>
+#include <linux/platform_device.h>
+#include <linux/property.h>
+
+#define AIROHA_GPIO_MAX 32
+
+/**
+ * airoha_gpio_ctrl - Airoha GPIO driver data
+ * @gc: Associated gpio_chip instance.
+ * @data: The data register.
+ * @dir0: The direction register for the lower 16 pins.
+ * @dir1: The direction register for the higher 16 pins.
+ * @output: The output enable register.
+ */
+struct airoha_gpio_ctrl {
+ struct gpio_chip gc;
+ void __iomem *data;
+ void __iomem *dir[2];
+ void __iomem *output;
+};
+
+static struct airoha_gpio_ctrl *gc_to_ctrl(struct gpio_chip *gc)
+{
+ return container_of(gc, struct airoha_gpio_ctrl, gc);
+}
+
+static int airoha_dir_set(struct gpio_chip *gc, unsigned int gpio,
+ int val, int out)
+{
+ struct airoha_gpio_ctrl *ctrl = gc_to_ctrl(gc);
+ u32 dir = ioread32(ctrl->dir[gpio / 16]);
+ u32 output = ioread32(ctrl->output);
+ u32 mask = BIT((gpio % 16) * 2);
+
+ if (out) {
+ dir |= mask;
+ output |= BIT(gpio);
+ } else {
+ dir &= ~mask;
+ output &= ~BIT(gpio);
+ }
+
+ iowrite32(dir, ctrl->dir[gpio / 16]);
+
+ if (out)
+ gc->set(gc, gpio, val);
+
+ iowrite32(output, ctrl->output);
+
+ return 0;
+}
+
+static int airoha_dir_out(struct gpio_chip *gc, unsigned int gpio,
+ int val)
+{
+ return airoha_dir_set(gc, gpio, val, 1);
+}
+
+static int airoha_dir_in(struct gpio_chip *gc, unsigned int gpio)
+{
+ return airoha_dir_set(gc, gpio, 0, 0);
+}
+
+static int airoha_get_dir(struct gpio_chip *gc, unsigned int gpio)
+{
+ struct airoha_gpio_ctrl *ctrl = gc_to_ctrl(gc);
+ u32 dir = ioread32(ctrl->dir[gpio / 16]);
+ u32 mask = BIT((gpio % 16) * 2);
+
+ return (dir & mask) ? GPIO_LINE_DIRECTION_OUT : GPIO_LINE_DIRECTION_IN;
+}
+
+static int airoha_gpio_probe(struct platform_device *pdev)
+{
+ struct device *dev = &pdev->dev;
+ struct airoha_gpio_ctrl *ctrl;
+ int err;
+
+ ctrl = devm_kzalloc(dev, sizeof(*ctrl), GFP_KERNEL);
+ if (!ctrl)
+ return -ENOMEM;
+
+ ctrl->data = devm_platform_ioremap_resource(pdev, 0);
+ if (IS_ERR(ctrl->data))
+ return PTR_ERR(ctrl->data);
+
+ ctrl->dir[0] = devm_platform_ioremap_resource(pdev, 1);
+ if (IS_ERR(ctrl->dir[0]))
+ return PTR_ERR(ctrl->dir[0]);
+
+ ctrl->dir[1] = devm_platform_ioremap_resource(pdev, 2);
+ if (IS_ERR(ctrl->dir[1]))
+ return PTR_ERR(ctrl->dir[1]);
+
+ ctrl->output = devm_platform_ioremap_resource(pdev, 3);
+ if (IS_ERR(ctrl->output))
+ return PTR_ERR(ctrl->output);
+
+ err = bgpio_init(&ctrl->gc, dev, 4, ctrl->data, NULL,
+ NULL, NULL, NULL, 0);
+ if (err)
+ return dev_err_probe(dev, err, "unable to init generic GPIO");
+
+ ctrl->gc.ngpio = AIROHA_GPIO_MAX;
+ ctrl->gc.owner = THIS_MODULE;
+ ctrl->gc.direction_output = airoha_dir_out;
+ ctrl->gc.direction_input = airoha_dir_in;
+ ctrl->gc.get_direction = airoha_get_dir;
+
+ return devm_gpiochip_add_data(dev, &ctrl->gc, ctrl);
+}
+
+static const struct of_device_id airoha_gpio_of_match[] = {
+ { .compatible = "airoha,en7523-gpio" },
+ { }
+};
+MODULE_DEVICE_TABLE(of, airoha_gpio_of_match);
+
+static struct platform_driver airoha_gpio_driver = {
+ .driver = {
+ .name = "airoha-gpio",
+ .of_match_table = airoha_gpio_of_match,
+ },
+ .probe = airoha_gpio_probe,
+};
+module_platform_driver(airoha_gpio_driver);
+
+MODULE_DESCRIPTION("Airoha GPIO support");
+MODULE_AUTHOR("John Crispin <john@phrozen.org>");
+MODULE_LICENSE("GPL v2");
--- /dev/null
+/* SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) */
+
+#ifndef _DT_BINDINGS_CLOCK_AIROHA_EN7523_H_
+#define _DT_BINDINGS_CLOCK_AIROHA_EN7523_H_
+
+#define EN7523_CLK_GSW 0
+#define EN7523_CLK_EMI 1
+#define EN7523_CLK_BUS 2
+#define EN7523_CLK_SLIC 3
+#define EN7523_CLK_SPI 4
+#define EN7523_CLK_NPU 5
+#define EN7523_CLK_CRYPTO 6
+#define EN7523_CLK_PCIE 7
+
+#define EN7523_NUM_CLOCKS 8
+
+#endif /* _DT_BINDINGS_CLOCK_AIROHA_EN7523_H_ */
+++ /dev/null
-# SPDX-License-Identifier: GPL-2.0-only
-obj-y += airoha.o
+++ /dev/null
-// SPDX-License-Identifier: GPL-2.0-or-later
-/*
- * Device Tree support for Airoha SoCs
- *
- * Copyright (c) 2022 Felix Fietkau <nbd@nbd.name>
- */
-#include <asm/mach/arch.h>
-
-static const char * const airoha_board_dt_compat[] = {
- "airoha,en7523",
- NULL,
-};
-
-DT_MACHINE_START(MEDIATEK_DT, "Airoha Cortex-A53 (Device Tree)")
- .dt_compat = airoha_board_dt_compat,
-MACHINE_END
+++ /dev/null
-// SPDX-License-Identifier: GPL-2.0-only
-
-#include <linux/delay.h>
-#include <linux/clk-provider.h>
-#include <linux/of.h>
-#include <linux/of_address.h>
-#include <linux/of_device.h>
-#include <linux/platform_device.h>
-#include <dt-bindings/clock/en7523-clk.h>
-
-#define REG_PCI_CONTROL 0x88
-#define REG_PCI_CONTROL_PERSTOUT BIT(29)
-#define REG_PCI_CONTROL_PERSTOUT1 BIT(26)
-#define REG_PCI_CONTROL_REFCLK_EN1 BIT(22)
-#define REG_GSW_CLK_DIV_SEL 0x1b4
-#define REG_EMI_CLK_DIV_SEL 0x1b8
-#define REG_BUS_CLK_DIV_SEL 0x1bc
-#define REG_SPI_CLK_DIV_SEL 0x1c4
-#define REG_SPI_CLK_FREQ_SEL 0x1c8
-#define REG_NPU_CLK_DIV_SEL 0x1fc
-#define REG_CRYPTO_CLKSRC 0x200
-#define REG_RESET_CONTROL 0x834
-#define REG_RESET_CONTROL_PCIEHB BIT(29)
-#define REG_RESET_CONTROL_PCIE1 BIT(27)
-#define REG_RESET_CONTROL_PCIE2 BIT(26)
-
-struct en_clk_desc {
- int id;
- const char *name;
- u32 base_reg;
- u8 base_bits;
- u8 base_shift;
- union {
- const unsigned int *base_values;
- unsigned int base_value;
- };
- size_t n_base_values;
-
- u16 div_reg;
- u8 div_bits;
- u8 div_shift;
- u16 div_val0;
- u8 div_step;
-};
-
-struct en_clk_gate {
- void __iomem *base;
- struct clk_hw hw;
-};
-
-static const u32 gsw_base[] = { 400000000, 500000000 };
-static const u32 emi_base[] = { 333000000, 400000000 };
-static const u32 bus_base[] = { 500000000, 540000000 };
-static const u32 slic_base[] = { 100000000, 3125000 };
-static const u32 npu_base[] = { 333000000, 400000000, 500000000 };
-
-static const struct en_clk_desc en7523_base_clks[] = {
- {
- .id = EN7523_CLK_GSW,
- .name = "gsw",
-
- .base_reg = REG_GSW_CLK_DIV_SEL,
- .base_bits = 1,
- .base_shift = 8,
- .base_values = gsw_base,
- .n_base_values = ARRAY_SIZE(gsw_base),
-
- .div_bits = 3,
- .div_shift = 0,
- .div_step = 1,
- }, {
- .id = EN7523_CLK_EMI,
- .name = "emi",
-
- .base_reg = REG_EMI_CLK_DIV_SEL,
- .base_bits = 1,
- .base_shift = 8,
- .base_values = emi_base,
- .n_base_values = ARRAY_SIZE(emi_base),
-
- .div_bits = 3,
- .div_shift = 0,
- .div_step = 1,
- }, {
- .id = EN7523_CLK_BUS,
- .name = "bus",
-
- .base_reg = REG_BUS_CLK_DIV_SEL,
- .base_bits = 1,
- .base_shift = 8,
- .base_values = bus_base,
- .n_base_values = ARRAY_SIZE(bus_base),
-
- .div_bits = 3,
- .div_shift = 0,
- .div_step = 1,
- }, {
- .id = EN7523_CLK_SLIC,
- .name = "slic",
-
- .base_reg = REG_SPI_CLK_FREQ_SEL,
- .base_bits = 1,
- .base_shift = 0,
- .base_values = slic_base,
- .n_base_values = ARRAY_SIZE(slic_base),
-
- .div_reg = REG_SPI_CLK_DIV_SEL,
- .div_bits = 5,
- .div_shift = 24,
- .div_val0 = 20,
- .div_step = 2,
- }, {
- .id = EN7523_CLK_SPI,
- .name = "spi",
-
- .base_reg = REG_SPI_CLK_DIV_SEL,
-
- .base_value = 400000000,
-
- .div_bits = 5,
- .div_shift = 8,
- .div_val0 = 40,
- .div_step = 2,
- }, {
- .id = EN7523_CLK_NPU,
- .name = "npu",
-
- .base_reg = REG_NPU_CLK_DIV_SEL,
- .base_bits = 2,
- .base_shift = 8,
- .base_values = npu_base,
- .n_base_values = ARRAY_SIZE(npu_base),
-
- .div_bits = 3,
- .div_shift = 0,
- .div_step = 1,
- }, {
- .id = EN7523_CLK_CRYPTO,
- .name = "crypto",
-
- .base_reg = REG_CRYPTO_CLKSRC,
- .base_bits = 1,
- .base_shift = 8,
- .base_values = emi_base,
- .n_base_values = ARRAY_SIZE(emi_base),
- }
-};
-
-static const struct of_device_id of_match_clk_en7523[] = {
- { .compatible = "airoha,en7523-scu", },
- { /* sentinel */ }
-};
-
-static unsigned int en7523_get_base_rate(void __iomem *base, unsigned int i)
-{
- const struct en_clk_desc *desc = &en7523_base_clks[i];
- u32 val;
-
- if (!desc->base_bits)
- return desc->base_value;
-
- val = readl(base + desc->base_reg);
- val >>= desc->base_shift;
- val &= (1 << desc->base_bits) - 1;
-
- if (val >= desc->n_base_values)
- return 0;
-
- return desc->base_values[val];
-}
-
-static u32 en7523_get_div(void __iomem *base, int i)
-{
- const struct en_clk_desc *desc = &en7523_base_clks[i];
- u32 reg, val;
-
- if (!desc->div_bits)
- return 1;
-
- reg = desc->div_reg ? desc->div_reg : desc->base_reg;
- val = readl(base + reg);
- val >>= desc->div_shift;
- val &= (1 << desc->div_bits) - 1;
-
- if (!val && desc->div_val0)
- return desc->div_val0;
-
- return (val + 1) * desc->div_step;
-}
-
-static int en7523_pci_is_enabled(struct clk_hw *hw)
-{
- struct en_clk_gate *cg = container_of(hw, struct en_clk_gate, hw);
-
- return !!(readl(cg->base + REG_PCI_CONTROL) & REG_PCI_CONTROL_REFCLK_EN1);
-}
-
-static int en7523_pci_prepare(struct clk_hw *hw)
-{
- struct en_clk_gate *cg = container_of(hw, struct en_clk_gate, hw);
- void __iomem *np_base = cg->base;
- u32 val, mask;
-
- /* Need to pull device low before reset */
- val = readl(np_base + REG_PCI_CONTROL);
- val &= ~(REG_PCI_CONTROL_PERSTOUT1 | REG_PCI_CONTROL_PERSTOUT);
- writel(val, np_base + REG_PCI_CONTROL);
- usleep_range(1000, 2000);
-
- /* Enable PCIe port 1 */
- val |= REG_PCI_CONTROL_REFCLK_EN1;
- writel(val, np_base + REG_PCI_CONTROL);
- usleep_range(1000, 2000);
-
- /* Reset to default */
- val = readl(np_base + REG_RESET_CONTROL);
- mask = REG_RESET_CONTROL_PCIE1 | REG_RESET_CONTROL_PCIE2 |
- REG_RESET_CONTROL_PCIEHB;
- writel(val & ~mask, np_base + REG_RESET_CONTROL);
- usleep_range(1000, 2000);
- writel(val | mask, np_base + REG_RESET_CONTROL);
- msleep(100);
- writel(val & ~mask, np_base + REG_RESET_CONTROL);
- usleep_range(5000, 10000);
-
- /* Release device */
- mask = REG_PCI_CONTROL_PERSTOUT1 | REG_PCI_CONTROL_PERSTOUT;
- val = readl(np_base + REG_PCI_CONTROL);
- writel(val & ~mask, np_base + REG_PCI_CONTROL);
- usleep_range(1000, 2000);
- writel(val | mask, np_base + REG_PCI_CONTROL);
- msleep(250);
-
- return 0;
-}
-
-static void en7523_pci_unprepare(struct clk_hw *hw)
-{
- struct en_clk_gate *cg = container_of(hw, struct en_clk_gate, hw);
- void __iomem *np_base = cg->base;
- u32 val;
-
- val = readl(np_base + REG_PCI_CONTROL);
- val &= ~REG_PCI_CONTROL_REFCLK_EN1;
- writel(val, np_base + REG_PCI_CONTROL);
-}
-
-static struct clk_hw *en7523_register_pcie_clk(struct device *dev,
- void __iomem *np_base)
-{
- static const struct clk_ops pcie_gate_ops = {
- .is_enabled = en7523_pci_is_enabled,
- .prepare = en7523_pci_prepare,
- .unprepare = en7523_pci_unprepare,
- };
- struct clk_init_data init = {
- .name = "pcie",
- .ops = &pcie_gate_ops,
- };
- struct en_clk_gate *cg;
-
- cg = devm_kzalloc(dev, sizeof(*cg), GFP_KERNEL);
- if (!cg)
- return NULL;
-
- cg->base = np_base;
- cg->hw.init = &init;
- en7523_pci_unprepare(&cg->hw);
-
- if (clk_hw_register(dev, &cg->hw))
- return NULL;
-
- return &cg->hw;
-}
-
-static void en7523_register_clocks(struct device *dev, struct clk_hw_onecell_data *clk_data,
- void __iomem *base, void __iomem *np_base)
-{
- struct clk_hw *hw;
- u32 rate;
- int i;
-
- for (i = 0; i < ARRAY_SIZE(en7523_base_clks); i++) {
- const struct en_clk_desc *desc = &en7523_base_clks[i];
-
- rate = en7523_get_base_rate(base, i);
- rate /= en7523_get_div(base, i);
-
- hw = clk_hw_register_fixed_rate(dev, desc->name, NULL, 0, rate);
- if (IS_ERR(hw)) {
- pr_err("Failed to register clk %s: %ld\n",
- desc->name, PTR_ERR(hw));
- continue;
- }
-
- clk_data->hws[desc->id] = hw;
- }
-
- hw = en7523_register_pcie_clk(dev, np_base);
- clk_data->hws[EN7523_CLK_PCIE] = hw;
-
- clk_data->num = EN7523_NUM_CLOCKS;
-}
-
-static int en7523_clk_probe(struct platform_device *pdev)
-{
- struct device_node *node = pdev->dev.of_node;
- struct clk_hw_onecell_data *clk_data;
- void __iomem *base, *np_base;
- int r;
-
- base = devm_platform_ioremap_resource(pdev, 0);
- if (IS_ERR(base))
- return PTR_ERR(base);
-
- np_base = devm_platform_ioremap_resource(pdev, 1);
- if (IS_ERR(np_base))
- return PTR_ERR(np_base);
-
- clk_data = devm_kzalloc(&pdev->dev,
- struct_size(clk_data, hws, EN7523_NUM_CLOCKS),
- GFP_KERNEL);
- if (!clk_data)
- return -ENOMEM;
-
- en7523_register_clocks(&pdev->dev, clk_data, base, np_base);
-
- r = of_clk_add_hw_provider(node, of_clk_hw_onecell_get, clk_data);
- if (r)
- dev_err(&pdev->dev,
- "could not register clock provider: %s: %d\n",
- pdev->name, r);
-
- return r;
-}
-
-static struct platform_driver clk_en7523_drv = {
- .probe = en7523_clk_probe,
- .driver = {
- .name = "clk-en7523",
- .of_match_table = of_match_clk_en7523,
- .suppress_bind_attrs = true,
- },
-};
-
-static int __init clk_en7523_init(void)
-{
- return platform_driver_register(&clk_en7523_drv);
-}
-
-arch_initcall(clk_en7523_init);
+++ /dev/null
-// SPDX-License-Identifier: GPL-2.0-only
-
-#include <linux/types.h>
-#include <linux/io.h>
-#include <linux/bits.h>
-#include <linux/gpio/driver.h>
-#include <linux/mod_devicetable.h>
-#include <linux/module.h>
-#include <linux/platform_device.h>
-#include <linux/property.h>
-
-#define AIROHA_GPIO_MAX 32
-
-/**
- * airoha_gpio_ctrl - Airoha GPIO driver data
- * @gc: Associated gpio_chip instance.
- * @data: The data register.
- * @dir0: The direction register for the lower 16 pins.
- * @dir1: The direction register for the higher 16 pins.
- * @output: The output enable register.
- */
-struct airoha_gpio_ctrl {
- struct gpio_chip gc;
- void __iomem *data;
- void __iomem *dir[2];
- void __iomem *output;
-};
-
-static struct airoha_gpio_ctrl *gc_to_ctrl(struct gpio_chip *gc)
-{
- return container_of(gc, struct airoha_gpio_ctrl, gc);
-}
-
-static int airoha_dir_set(struct gpio_chip *gc, unsigned int gpio,
- int val, int out)
-{
- struct airoha_gpio_ctrl *ctrl = gc_to_ctrl(gc);
- u32 dir = ioread32(ctrl->dir[gpio / 16]);
- u32 output = ioread32(ctrl->output);
- u32 mask = BIT((gpio % 16) * 2);
-
- if (out) {
- dir |= mask;
- output |= BIT(gpio);
- } else {
- dir &= ~mask;
- output &= ~BIT(gpio);
- }
-
- iowrite32(dir, ctrl->dir[gpio / 16]);
-
- if (out)
- gc->set(gc, gpio, val);
-
- iowrite32(output, ctrl->output);
-
- return 0;
-}
-
-static int airoha_dir_out(struct gpio_chip *gc, unsigned int gpio,
- int val)
-{
- return airoha_dir_set(gc, gpio, val, 1);
-}
-
-static int airoha_dir_in(struct gpio_chip *gc, unsigned int gpio)
-{
- return airoha_dir_set(gc, gpio, 0, 0);
-}
-
-static int airoha_get_dir(struct gpio_chip *gc, unsigned int gpio)
-{
- struct airoha_gpio_ctrl *ctrl = gc_to_ctrl(gc);
- u32 dir = ioread32(ctrl->dir[gpio / 16]);
- u32 mask = BIT((gpio % 16) * 2);
-
- return (dir & mask) ? GPIO_LINE_DIRECTION_OUT : GPIO_LINE_DIRECTION_IN;
-}
-
-static int airoha_gpio_probe(struct platform_device *pdev)
-{
- struct device *dev = &pdev->dev;
- struct airoha_gpio_ctrl *ctrl;
- int err;
-
- ctrl = devm_kzalloc(dev, sizeof(*ctrl), GFP_KERNEL);
- if (!ctrl)
- return -ENOMEM;
-
- ctrl->data = devm_platform_ioremap_resource(pdev, 0);
- if (IS_ERR(ctrl->data))
- return PTR_ERR(ctrl->data);
-
- ctrl->dir[0] = devm_platform_ioremap_resource(pdev, 1);
- if (IS_ERR(ctrl->dir[0]))
- return PTR_ERR(ctrl->dir[0]);
-
- ctrl->dir[1] = devm_platform_ioremap_resource(pdev, 2);
- if (IS_ERR(ctrl->dir[1]))
- return PTR_ERR(ctrl->dir[1]);
-
- ctrl->output = devm_platform_ioremap_resource(pdev, 3);
- if (IS_ERR(ctrl->output))
- return PTR_ERR(ctrl->output);
-
- err = bgpio_init(&ctrl->gc, dev, 4, ctrl->data, NULL,
- NULL, NULL, NULL, 0);
- if (err)
- return dev_err_probe(dev, err, "unable to init generic GPIO");
-
- ctrl->gc.ngpio = AIROHA_GPIO_MAX;
- ctrl->gc.owner = THIS_MODULE;
- ctrl->gc.direction_output = airoha_dir_out;
- ctrl->gc.direction_input = airoha_dir_in;
- ctrl->gc.get_direction = airoha_get_dir;
-
- return devm_gpiochip_add_data(dev, &ctrl->gc, ctrl);
-}
-
-static const struct of_device_id airoha_gpio_of_match[] = {
- { .compatible = "airoha,en7523-gpio" },
- { }
-};
-MODULE_DEVICE_TABLE(of, airoha_gpio_of_match);
-
-static struct platform_driver airoha_gpio_driver = {
- .driver = {
- .name = "airoha-gpio",
- .of_match_table = airoha_gpio_of_match,
- },
- .probe = airoha_gpio_probe,
-};
-module_platform_driver(airoha_gpio_driver);
-
-MODULE_DESCRIPTION("Airoha GPIO support");
-MODULE_AUTHOR("John Crispin <john@phrozen.org>");
-MODULE_LICENSE("GPL v2");
+++ /dev/null
-/* SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) */
-
-#ifndef _DT_BINDINGS_CLOCK_AIROHA_EN7523_H_
-#define _DT_BINDINGS_CLOCK_AIROHA_EN7523_H_
-
-#define EN7523_CLK_GSW 0
-#define EN7523_CLK_EMI 1
-#define EN7523_CLK_BUS 2
-#define EN7523_CLK_SLIC 3
-#define EN7523_CLK_SPI 4
-#define EN7523_CLK_NPU 5
-#define EN7523_CLK_CRYPTO 6
-#define EN7523_CLK_PCIE 7
-
-#define EN7523_NUM_CLOCKS 8
-
-#endif /* _DT_BINDINGS_CLOCK_AIROHA_EN7523_H_ */
projects / openwrt / staging / jow.git / commitdiff