pinctrl: mtmips: add support for MediaTek MT7620 SoC

This patch adds pinctrl support for MediaTek MT7620 SoC.
The MT7620 SoC supports only pinmux.

Reviewed-by: Stefan Roese <sr@denx.de>
Signed-off-by: Weijie Gao <weijie.gao@mediatek.com>

diff --git a/drivers/pinctrl/mtmips/Kconfig b/drivers/pinctrl/mtmips/Kconfig
index 8482a38..844d5b7 100644 (file)
--- a/drivers/pinctrl/mtmips/Kconfig
+++ b/drivers/pinctrl/mtmips/Kconfig
@@ -3,6 +3,15 @@ config PINCTRL_MTMIPS
        depends on ARCH_MTMIPS
        bool
 
+config PINCTRL_MT7620
+       bool "MediaTek MT7620 pin control driver"
+       select PINCTRL_MTMIPS
+       depends on SOC_MT7620 && PINCTRL_GENERIC
+       help
+         Support pin multiplexing control on MediaTek MT7620.
+         The driver is controlled by a device tree node which contains
+         the pin mux functions for each available pin groups.
+
 config PINCTRL_MT7628
        bool "MediaTek MT7628 pin control driver"
        select PINCTRL_MTMIPS

diff --git a/drivers/pinctrl/mtmips/Makefile b/drivers/pinctrl/mtmips/Makefile
index 3ba5c0c..ba945a8 100644 (file)
--- a/drivers/pinctrl/mtmips/Makefile
+++ b/drivers/pinctrl/mtmips/Makefile
@@ -4,4 +4,5 @@
 obj-$(CONFIG_PINCTRL_MTMIPS) += pinctrl-mtmips-common.o
 
 # SoC Drivers
+obj-$(CONFIG_PINCTRL_MT7620) += pinctrl-mt7620.o
 obj-$(CONFIG_PINCTRL_MT7628) += pinctrl-mt7628.o

diff --git a/drivers/pinctrl/mtmips/pinctrl-mt7620.c b/drivers/pinctrl/mtmips/pinctrl-mt7620.c
new file mode 100644 (file)
index 0000000..72ce873
--- /dev/null
+++ b/drivers/pinctrl/mtmips/pinctrl-mt7620.c
@@ -0,0 +1,200 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright (C) 2020 MediaTek Inc. All Rights Reserved.
+ *
+ * Author: Weijie Gao <weijie.gao@mediatek.com>
+ */
+
+#include <dm.h>
+#include <dm/pinctrl.h>
+#include <linux/bitops.h>
+#include <linux/io.h>
+
+#include "pinctrl-mtmips-common.h"
+
+#define SUTIF_SHIFT                    30
+#define WDT_RST_SHIFT                  21
+#define PA_G_SHIFT                     20
+#define NAND_SD_SHIFT                  18
+#define PERST_SHIFT                    16
+#define EPHY_LED_SHIFT                 15
+#define WLED_SHIFT                     13
+#define SPI_CS1_SHIFT                  12
+#define SPI_SHIFT                      11
+#define RGMII2_SHIFT                   10
+#define RGMII1_SHIFT                   9
+#define MDIO_SHIFT                     7
+#define UARTL_SHIFT                    5
+#define UARTF_SHIFT                    2
+#define I2C_SHIFT                      0
+
+#define GM4_MASK                       3
+#define GM8_MASK                       7
+
+#if CONFIG_IS_ENABLED(PINMUX)
+static const struct mtmips_pmx_func sutif_grp[] = {
+       FUNC("i2c", 2),
+       FUNC("uartl", 1),
+       FUNC("none", 0),
+};
+
+static const struct mtmips_pmx_func wdt_rst_grp[] = {
+       FUNC("gpio", 2),
+       FUNC("refclk", 1),
+       FUNC("wdt rst", 0),
+};
+
+static const struct mtmips_pmx_func pa_g_grp[] = {
+       FUNC("gpio", 1),
+       FUNC("pa", 0),
+};
+
+static const struct mtmips_pmx_func nand_sd_grp[] = {
+       FUNC("gpio", 2),
+       FUNC("sd", 1),
+       FUNC("nand", 0),
+};
+
+static const struct mtmips_pmx_func perst_grp[] = {
+       FUNC("gpio", 2),
+       FUNC("refclk", 1),
+       FUNC("perst", 0),
+};
+
+static const struct mtmips_pmx_func ephy_led_grp[] = {
+       FUNC("gpio", 1),
+       FUNC("led", 0),
+};
+
+static const struct mtmips_pmx_func wled_grp[] = {
+       FUNC("gpio", 1),
+       FUNC("led", 0),
+};
+
+static const struct mtmips_pmx_func spi_cs1_grp[] = {
+       FUNC("refclk", 1),
+       FUNC("spi cs1", 0),
+};
+
+static const struct mtmips_pmx_func spi_grp[] = {
+       FUNC("gpio", 1),
+       FUNC("spi", 0),
+};
+
+static const struct mtmips_pmx_func rgmii2_grp[] = {
+       FUNC("gpio", 1),
+       FUNC("rgmii2", 0),
+};
+
+static const struct mtmips_pmx_func rgmii1_grp[] = {
+       FUNC("gpio", 1),
+       FUNC("rgmii1", 0),
+};
+
+static const struct mtmips_pmx_func mdio_grp[] = {
+       FUNC("gpio", 2),
+       FUNC("refclk", 1),
+       FUNC("mdio", 0),
+};
+
+static const struct mtmips_pmx_func uartl_grp[] = {
+       FUNC("gpio", 1),
+       FUNC("uartl", 0),
+};
+
+static const struct mtmips_pmx_func uartf_grp[] = {
+       FUNC("gpio", 7),
+       FUNC("i2s gpio", 6),
+       FUNC("uartf gpio", 5),
+       FUNC("gpio pcm", 4),
+       FUNC("i2s uartf", 3),
+       FUNC("i2s pcm", 2),
+       FUNC("uartf pcm", 1),
+       FUNC("uartf", 0),
+};
+
+static const struct mtmips_pmx_func i2c_grp[] = {
+       FUNC("gpio", 1),
+       FUNC("i2c", 0),
+};
+
+static const struct mtmips_pmx_group mt7620_pinmux_data[] = {
+       GRP("sutif", sutif_grp, 0, SUTIF_SHIFT, GM4_MASK),
+       GRP("wdt rst", wdt_rst_grp, 0, WDT_RST_SHIFT, GM4_MASK),
+       GRP("pa", pa_g_grp, 0, PA_G_SHIFT, 1),
+       GRP("nand", nand_sd_grp, 0, NAND_SD_SHIFT, GM4_MASK),
+       GRP("perst", perst_grp, 0, PERST_SHIFT, GM4_MASK),
+       GRP("ephy led", ephy_led_grp, 0, EPHY_LED_SHIFT, 1),
+       GRP("wled", wled_grp, 0, WLED_SHIFT, 1),
+       GRP("spi cs1", spi_cs1_grp, 0, SPI_CS1_SHIFT, 1),
+       GRP("spi", spi_grp, 0, SPI_SHIFT, 1),
+       GRP("rgmii2", rgmii2_grp, 0, RGMII2_SHIFT, 1),
+       GRP("rgmii1", rgmii1_grp, 0, RGMII1_SHIFT, 1),
+       GRP("mdio", mdio_grp, 0, MDIO_SHIFT, GM4_MASK),
+       GRP("uartl", uartl_grp, 0, UARTL_SHIFT, 1),
+       GRP("uartf", uartf_grp, 0, UARTF_SHIFT, GM8_MASK),
+       GRP("i2c", i2c_grp, 0, I2C_SHIFT, 1),
+};
+
+static int mt7620_get_groups_count(struct udevice *dev)
+{
+       return ARRAY_SIZE(mt7620_pinmux_data);
+}
+
+static const char *mt7620_get_group_name(struct udevice *dev,
+                                        unsigned int selector)
+{
+       return mt7620_pinmux_data[selector].name;
+}
+#endif /* CONFIG_IS_ENABLED(PINMUX) */
+
+static int mt7620_pinctrl_probe(struct udevice *dev)
+{
+       struct mtmips_pinctrl_priv *priv = dev_get_priv(dev);
+       int ret = 0;
+
+#if CONFIG_IS_ENABLED(PINMUX)
+       ret = mtmips_pinctrl_probe(priv, ARRAY_SIZE(mt7620_pinmux_data),
+                                  mt7620_pinmux_data);
+#endif /* CONFIG_IS_ENABLED(PINMUX) */
+
+       return ret;
+}
+
+static int mt7620_pinctrl_of_to_plat(struct udevice *dev)
+{
+       struct mtmips_pinctrl_priv *priv = dev_get_priv(dev);
+
+       priv->base = dev_remap_addr_index(dev, 0);
+       if (!priv->base)
+               return -EINVAL;
+
+       return 0;
+}
+
+static const struct pinctrl_ops mt7620_pinctrl_ops = {
+#if CONFIG_IS_ENABLED(PINMUX)
+       .get_groups_count = mt7620_get_groups_count,
+       .get_group_name = mt7620_get_group_name,
+       .get_functions_count = mtmips_get_functions_count,
+       .get_function_name = mtmips_get_function_name,
+       .pinmux_group_set = mtmips_pinmux_group_set,
+#endif /* CONFIG_IS_ENABLED(PINMUX) */
+       .set_state = pinctrl_generic_set_state,
+};
+
+static const struct udevice_id mt7620_pinctrl_ids[] = {
+       { .compatible = "mediatek,mt7620-pinctrl" },
+       { }
+};
+
+U_BOOT_DRIVER(mt7620_pinctrl) = {
+       .name = "mt7620-pinctrl",
+       .id = UCLASS_PINCTRL,
+       .of_match = mt7620_pinctrl_ids,
+       .of_to_plat = mt7620_pinctrl_of_to_plat,
+       .ops = &mt7620_pinctrl_ops,
+       .probe = mt7620_pinctrl_probe,
+       .priv_auto = sizeof(struct mtmips_pinctrl_priv),
+       .flags = DM_FLAG_PRE_RELOC,
+};