[PATCH v3 06/15] pinctrl: mtmips: add support for MediaTek MT7621 SoC
Weijie Gao
weijie.gao at mediatek.com
Thu Apr 28 12:37:51 CEST 2022
This patch adds pinctrl support for MediaTek MT7621 SoC.
The MT7621 SoC supports pinconf, but it is not the same as mt7628.
Signed-off-by: Weijie Gao <weijie.gao at mediatek.com>
---
v3 changes: none
v2 changes: none
---
drivers/pinctrl/mtmips/Kconfig | 9 +
drivers/pinctrl/mtmips/Makefile | 1 +
drivers/pinctrl/mtmips/pinctrl-mt7621.c | 307 ++++++++++++++++++
.../pinctrl/mtmips/pinctrl-mtmips-common.c | 4 +-
.../pinctrl/mtmips/pinctrl-mtmips-common.h | 12 +
5 files changed, 331 insertions(+), 2 deletions(-)
create mode 100644 drivers/pinctrl/mtmips/pinctrl-mt7621.c
diff --git a/drivers/pinctrl/mtmips/Kconfig b/drivers/pinctrl/mtmips/Kconfig
index 844d5b743f..456f3ea25d 100644
--- a/drivers/pinctrl/mtmips/Kconfig
+++ b/drivers/pinctrl/mtmips/Kconfig
@@ -12,6 +12,15 @@ config PINCTRL_MT7620
The driver is controlled by a device tree node which contains
the pin mux functions for each available pin groups.
+config PINCTRL_MT7621
+ bool "MediaTek MT7621 pin control driver"
+ select PINCTRL_MTMIPS
+ depends on SOC_MT7621 && PINCTRL_GENERIC
+ help
+ Support pin multiplexing control on MediaTek MT7621.
+ 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 ba945a89a7..8fece4f5fa 100644
--- a/drivers/pinctrl/mtmips/Makefile
+++ b/drivers/pinctrl/mtmips/Makefile
@@ -5,4 +5,5 @@ obj-$(CONFIG_PINCTRL_MTMIPS) += pinctrl-mtmips-common.o
# SoC Drivers
obj-$(CONFIG_PINCTRL_MT7620) += pinctrl-mt7620.o
+obj-$(CONFIG_PINCTRL_MT7621) += pinctrl-mt7621.o
obj-$(CONFIG_PINCTRL_MT7628) += pinctrl-mt7628.o
diff --git a/drivers/pinctrl/mtmips/pinctrl-mt7621.c b/drivers/pinctrl/mtmips/pinctrl-mt7621.c
new file mode 100644
index 0000000000..c786d13d9e
--- /dev/null
+++ b/drivers/pinctrl/mtmips/pinctrl-mt7621.c
@@ -0,0 +1,307 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright (C) 2021 MediaTek Inc. All Rights Reserved.
+ *
+ * Author: Weijie Gao <weijie.gao at mediatek.com>
+ */
+
+#include <common.h>
+#include <dm.h>
+#include <dm/pinctrl.h>
+#include <dm/device_compat.h>
+#include <linux/bitops.h>
+#include <linux/io.h>
+
+#include "pinctrl-mtmips-common.h"
+
+#define SYSC_MAP_SIZE 0x100
+
+#define PAD_UART1_GPIO0_OFS 0x00
+#define PAD_UART3_I2C_OFS 0x04
+#define PAD_UART2_JTAG_OFS 0x08
+#define PAD_PERST_WDT_OFS 0x0c
+#define PAD_RGMII2_MDIO_OFS 0x10
+#define PAD_SDXC_SPI_OFS 0x14
+#define GPIOMODE_OFS 0x18
+#define PAD_BOPT_ESWINT_OFS 0x28
+
+#define ESWINT_SHIFT 20
+#define SDXC_SHIFT 18
+#define SPI_SHIFT 16
+#define RGMII2_SHIFT 15
+#define RGMII1_SHIFT 14
+#define MDIO_SHIFT 12
+#define PERST_SHIFT 10
+#define WDT_SHIFT 8
+#define JTAG_SHIFT 7
+#define UART2_SHIFT 5
+#define UART3_SHIFT 3
+#define I2C_SHIFT 2
+#define UART1_SHIFT 1
+#define GPIO0_SHIFT 0 /* Dummy */
+
+#define GM4_MASK 3
+
+#define E4_E2_M 0x03
+#define E4_E2_S 4
+#define PULL_UP BIT(3)
+#define PULL_DOWN BIT(2)
+#define SMT BIT(1)
+#define SR BIT(0)
+
+struct mt7621_pinctrl_priv {
+ struct mtmips_pinctrl_priv mp;
+};
+
+#if CONFIG_IS_ENABLED(PINMUX)
+static const struct mtmips_pmx_func esw_int_grp[] = {
+ FUNC("gpio", 1),
+ FUNC("esw int", 0),
+};
+
+static const struct mtmips_pmx_func sdxc_grp[] = {
+ FUNC("nand", 2),
+ FUNC("gpio", 1),
+ FUNC("sdxc", 0),
+};
+
+static const struct mtmips_pmx_func spi_grp[] = {
+ FUNC("nand", 2),
+ FUNC("gpio", 1),
+ FUNC("spi", 0),
+};
+
+static const struct mtmips_pmx_func rgmii2_grp[] = {
+ FUNC("gpio", 1),
+ FUNC("rgmii", 0),
+};
+
+static const struct mtmips_pmx_func rgmii1_grp[] = {
+ FUNC("gpio", 1),
+ FUNC("rgmii", 0),
+};
+
+static const struct mtmips_pmx_func mdio_grp[] = {
+ FUNC("gpio", 1),
+ FUNC("mdio", 0),
+};
+
+static const struct mtmips_pmx_func perst_grp[] = {
+ FUNC("refclk", 2),
+ FUNC("gpio", 1),
+ FUNC("pcie reset", 0),
+};
+
+static const struct mtmips_pmx_func wdt_grp[] = {
+ FUNC("refclk", 2),
+ FUNC("gpio", 1),
+ FUNC("wdt rst", 0),
+};
+
+static const struct mtmips_pmx_func jtag_grp[] = {
+ FUNC("gpio", 1),
+ FUNC("jtag", 0),
+};
+
+static const struct mtmips_pmx_func uart2_grp[] = {
+ FUNC("spdif", 3),
+ FUNC("pcm", 2),
+ FUNC("gpio", 1),
+ FUNC("uart", 0),
+};
+
+static const struct mtmips_pmx_func uart3_grp[] = {
+ FUNC("spdif", 3),
+ FUNC("i2s", 2),
+ FUNC("gpio", 1),
+ FUNC("uart", 0),
+};
+
+static const struct mtmips_pmx_func i2c_grp[] = {
+ FUNC("gpio", 1),
+ FUNC("i2c", 0),
+};
+
+static const struct mtmips_pmx_func uart1_grp[] = {
+ FUNC("gpio", 1),
+ FUNC("uart", 0),
+};
+
+static const struct mtmips_pmx_func gpio0_grp[] = {
+ FUNC("gpio", 0),
+};
+
+static const struct mtmips_pmx_group mt7621_pmx_data[] = {
+ GRP_PCONF("esw int", esw_int_grp, GPIOMODE_OFS, ESWINT_SHIFT, 1,
+ PAD_BOPT_ESWINT_OFS, 0),
+ GRP_PCONF("sdxc", sdxc_grp, GPIOMODE_OFS, SDXC_SHIFT, GM4_MASK,
+ PAD_SDXC_SPI_OFS, 16),
+ GRP_PCONF("spi", spi_grp, GPIOMODE_OFS, SPI_SHIFT, GM4_MASK,
+ PAD_SDXC_SPI_OFS, 0),
+ GRP_PCONF("rgmii2", rgmii2_grp, GPIOMODE_OFS, RGMII2_SHIFT, 1,
+ PAD_RGMII2_MDIO_OFS, 16),
+ GRP("rgmii1", rgmii1_grp, GPIOMODE_OFS, RGMII1_SHIFT, 1),
+ GRP_PCONF("mdio", mdio_grp, GPIOMODE_OFS, MDIO_SHIFT, GM4_MASK,
+ PAD_RGMII2_MDIO_OFS, 0),
+ GRP_PCONF("pcie reset", perst_grp, GPIOMODE_OFS, PERST_SHIFT, GM4_MASK,
+ PAD_PERST_WDT_OFS, 16),
+ GRP_PCONF("wdt", wdt_grp, GPIOMODE_OFS, WDT_SHIFT, GM4_MASK,
+ PAD_PERST_WDT_OFS, 0),
+ GRP_PCONF("jtag", jtag_grp, GPIOMODE_OFS, JTAG_SHIFT, 1,
+ PAD_UART2_JTAG_OFS, 16),
+ GRP_PCONF("uart2", uart2_grp, GPIOMODE_OFS, UART2_SHIFT, GM4_MASK,
+ PAD_UART2_JTAG_OFS, 0),
+ GRP_PCONF("uart3", uart3_grp, GPIOMODE_OFS, UART3_SHIFT, GM4_MASK,
+ PAD_UART3_I2C_OFS, 16),
+ GRP_PCONF("i2c", i2c_grp, GPIOMODE_OFS, I2C_SHIFT, 1,
+ PAD_UART3_I2C_OFS, 0),
+ GRP_PCONF("uart1", uart1_grp, GPIOMODE_OFS, UART1_SHIFT, 1,
+ PAD_UART1_GPIO0_OFS, 16),
+ GRP_PCONF("gpio0", gpio0_grp, GPIOMODE_OFS, GPIO0_SHIFT, 1,
+ PAD_UART1_GPIO0_OFS, 0),
+};
+
+static int mt7621_get_groups_count(struct udevice *dev)
+{
+ return ARRAY_SIZE(mt7621_pmx_data);
+}
+
+static const char *mt7621_get_group_name(struct udevice *dev,
+ unsigned int selector)
+{
+ return mt7621_pmx_data[selector].name;
+}
+#endif /* CONFIG_IS_ENABLED(PINMUX) */
+
+#if CONFIG_IS_ENABLED(PINCONF)
+static const struct pinconf_param mt7621_conf_params[] = {
+ { "bias-disable", PIN_CONFIG_BIAS_DISABLE, 0 },
+ { "bias-pull-up", PIN_CONFIG_BIAS_PULL_UP, 1 },
+ { "bias-pull-down", PIN_CONFIG_BIAS_PULL_DOWN, 1 },
+ { "input-schmitt-enable", PIN_CONFIG_INPUT_SCHMITT_ENABLE, 1 },
+ { "input-schmitt-disable", PIN_CONFIG_INPUT_SCHMITT_ENABLE, 0 },
+ { "drive-strength", PIN_CONFIG_DRIVE_STRENGTH, 0 },
+ { "slew-rate", PIN_CONFIG_SLEW_RATE, 0 },
+};
+
+static const u32 mt7621_pconf_drv_strength_tbl[] = {2, 4, 6, 8};
+
+static int mt7621_pinconf_group_set(struct udevice *dev,
+ unsigned int group_selector,
+ unsigned int param, unsigned int arg)
+{
+ struct mt7621_pinctrl_priv *priv = dev_get_priv(dev);
+ const struct mtmips_pmx_group *grp = &mt7621_pmx_data[group_selector];
+ u32 clr = 0, set = 0;
+ int i;
+
+ if (!grp->pconf_avail)
+ return 0;
+
+ switch (param) {
+ case PIN_CONFIG_BIAS_DISABLE:
+ clr = PULL_UP | PULL_DOWN;
+ break;
+
+ case PIN_CONFIG_BIAS_PULL_UP:
+ clr = PULL_DOWN;
+ set = PULL_UP;
+ break;
+
+ case PIN_CONFIG_BIAS_PULL_DOWN:
+ clr = PULL_UP;
+ set = PULL_DOWN;
+ break;
+
+ case PIN_CONFIG_INPUT_SCHMITT_ENABLE:
+ if (arg)
+ set = SMT;
+ else
+ clr = SMT;
+ break;
+
+ case PIN_CONFIG_DRIVE_STRENGTH:
+ for (i = 0; i < ARRAY_SIZE(mt7621_pconf_drv_strength_tbl); i++)
+ if (mt7621_pconf_drv_strength_tbl[i] == arg)
+ break;
+
+ if (i >= ARRAY_SIZE(mt7621_pconf_drv_strength_tbl))
+ return -EINVAL;
+
+ clr = E4_E2_M << E4_E2_S;
+ set = i << E4_E2_S;
+ break;
+
+ case PIN_CONFIG_SLEW_RATE:
+ if (arg)
+ set = SR;
+ else
+ clr = SR;
+ break;
+
+ default:
+ return -EINVAL;
+ }
+
+ mtmips_pinctrl_reg_set(&priv->mp, grp->pconf_reg, grp->pconf_shift,
+ clr, set);
+
+ return 0;
+}
+#endif
+
+static int mt7621_pinctrl_probe(struct udevice *dev)
+{
+ struct mt7621_pinctrl_priv *priv = dev_get_priv(dev);
+ int ret = 0;
+
+#if CONFIG_IS_ENABLED(PINMUX)
+ ret = mtmips_pinctrl_probe(&priv->mp, ARRAY_SIZE(mt7621_pmx_data),
+ mt7621_pmx_data);
+#endif /* CONFIG_IS_ENABLED(PINMUX) */
+
+ return ret;
+}
+
+static int mt7621_pinctrl_of_to_plat(struct udevice *dev)
+{
+ struct mt7621_pinctrl_priv *priv = dev_get_priv(dev);
+
+ priv->mp.base = (void __iomem *)dev_remap_addr_index(dev, 0);
+
+ if (!priv->mp.base)
+ return -EINVAL;
+
+ return 0;
+}
+
+static const struct pinctrl_ops mt7621_pinctrl_ops = {
+#if CONFIG_IS_ENABLED(PINMUX)
+ .get_groups_count = mt7621_get_groups_count,
+ .get_group_name = mt7621_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) */
+#if CONFIG_IS_ENABLED(PINCONF)
+ .pinconf_num_params = ARRAY_SIZE(mt7621_conf_params),
+ .pinconf_params = mt7621_conf_params,
+ .pinconf_group_set = mt7621_pinconf_group_set,
+#endif /* CONFIG_IS_ENABLED(PINCONF) */
+ .set_state = pinctrl_generic_set_state,
+};
+
+static const struct udevice_id mt7621_pinctrl_ids[] = {
+ { .compatible = "mediatek,mt7621-pinctrl" },
+ { }
+};
+
+U_BOOT_DRIVER(mt7621_pinctrl) = {
+ .name = "mt7621-pinctrl",
+ .id = UCLASS_PINCTRL,
+ .of_match = mt7621_pinctrl_ids,
+ .of_to_plat = mt7621_pinctrl_of_to_plat,
+ .ops = &mt7621_pinctrl_ops,
+ .probe = mt7621_pinctrl_probe,
+ .priv_auto = sizeof(struct mt7621_pinctrl_priv),
+};
diff --git a/drivers/pinctrl/mtmips/pinctrl-mtmips-common.c b/drivers/pinctrl/mtmips/pinctrl-mtmips-common.c
index e361916eb2..869b781068 100644
--- a/drivers/pinctrl/mtmips/pinctrl-mtmips-common.c
+++ b/drivers/pinctrl/mtmips/pinctrl-mtmips-common.c
@@ -13,8 +13,8 @@
#include "pinctrl-mtmips-common.h"
-static void mtmips_pinctrl_reg_set(struct mtmips_pinctrl_priv *priv,
- u32 reg, u32 shift, u32 mask, u32 value)
+void mtmips_pinctrl_reg_set(struct mtmips_pinctrl_priv *priv,
+ u32 reg, u32 shift, u32 mask, u32 value)
{
u32 val;
diff --git a/drivers/pinctrl/mtmips/pinctrl-mtmips-common.h b/drivers/pinctrl/mtmips/pinctrl-mtmips-common.h
index b51d8f009c..1f1023ef42 100644
--- a/drivers/pinctrl/mtmips/pinctrl-mtmips-common.h
+++ b/drivers/pinctrl/mtmips/pinctrl-mtmips-common.h
@@ -22,6 +22,10 @@ struct mtmips_pmx_group {
u32 shift;
char mask;
+ int pconf_avail;
+ u32 pconf_reg;
+ u32 pconf_shift;
+
int nfuncs;
const struct mtmips_pmx_func *funcs;
};
@@ -42,6 +46,14 @@ struct mtmips_pinctrl_priv {
{ .name = (_name), .reg = (_reg), .shift = (_shift), .mask = (_mask), \
.funcs = (_funcs), .nfuncs = ARRAY_SIZE(_funcs) }
+#define GRP_PCONF(_name, _funcs, _reg, _shift, _mask, _pconf_reg, _pconf_shift) \
+ { .name = (_name), .reg = (_reg), .shift = (_shift), .mask = (_mask), \
+ .funcs = (_funcs), .nfuncs = ARRAY_SIZE(_funcs), .pconf_avail = 1, \
+ .pconf_reg = (_pconf_reg), .pconf_shift = (_pconf_shift) }
+
+void mtmips_pinctrl_reg_set(struct mtmips_pinctrl_priv *priv,
+ u32 reg, u32 shift, u32 mask, u32 value);
+
int mtmips_get_functions_count(struct udevice *dev);
const char *mtmips_get_function_name(struct udevice *dev,
unsigned int selector);
--
2.17.1
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