aboutsummaryrefslogtreecommitdiffstats
path: root/roms/u-boot/drivers/pinctrl/pinctrl-kendryte.c
diff options
context:
space:
mode:
Diffstat (limited to 'roms/u-boot/drivers/pinctrl/pinctrl-kendryte.c')
-rw-r--r--roms/u-boot/drivers/pinctrl/pinctrl-kendryte.c740
1 files changed, 740 insertions, 0 deletions
diff --git a/roms/u-boot/drivers/pinctrl/pinctrl-kendryte.c b/roms/u-boot/drivers/pinctrl/pinctrl-kendryte.c
new file mode 100644
index 000000000..09d51ca67
--- /dev/null
+++ b/roms/u-boot/drivers/pinctrl/pinctrl-kendryte.c
@@ -0,0 +1,740 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * Copyright (C) 2020 Sean Anderson <seanga2@gmail.com>
+ */
+
+#include <common.h>
+#include <clk.h>
+#include <dm.h>
+#include <dm/pinctrl.h>
+#include <dt-bindings/pinctrl/k210-pinctrl.h>
+#include <mapmem.h>
+#include <regmap.h>
+#include <syscon.h>
+#include <asm/io.h>
+#include <linux/err.h>
+#include <linux/bitfield.h>
+#include <linux/bitops.h>
+
+/*
+ * The K210 only implements 8 drive levels, even though there is register space
+ * for 16
+ */
+#define K210_PC_DRIVE_MASK GENMASK(11, 8)
+#define K210_PC_DRIVE_SHIFT 8
+#define K210_PC_DRIVE_0 (0 << K210_PC_DRIVE_SHIFT)
+#define K210_PC_DRIVE_1 (1 << K210_PC_DRIVE_SHIFT)
+#define K210_PC_DRIVE_2 (2 << K210_PC_DRIVE_SHIFT)
+#define K210_PC_DRIVE_3 (3 << K210_PC_DRIVE_SHIFT)
+#define K210_PC_DRIVE_4 (4 << K210_PC_DRIVE_SHIFT)
+#define K210_PC_DRIVE_5 (5 << K210_PC_DRIVE_SHIFT)
+#define K210_PC_DRIVE_6 (6 << K210_PC_DRIVE_SHIFT)
+#define K210_PC_DRIVE_7 (7 << K210_PC_DRIVE_SHIFT)
+#define K210_PC_DRIVE_MAX 7
+
+#define K210_PC_MODE_MASK GENMASK(23, 12)
+/*
+ * output enabled == PC_OE & (PC_OE_INV ^ FUNCTION_OE) where FUNCTION_OE is a
+ * physical signal from the function
+ */
+#define K210_PC_OE BIT(12) /* Output Enable */
+#define K210_PC_OE_INV BIT(13) /* INVert function-controlled Output Enable */
+#define K210_PC_DO_OE BIT(14) /* set Data Out to the Output Enable signal */
+#define K210_PC_DO_INV BIT(15) /* INVert final Data Output */
+#define K210_PC_PU BIT(16) /* Pull Up */
+#define K210_PC_PD BIT(17) /* Pull Down */
+/* Strong pull up not implemented on K210 */
+#define K210_PC_SL BIT(19) /* reduce SLew rate to prevent overshoot */
+/* Same semantics as OE above */
+#define K210_PC_IE BIT(20) /* Input Enable */
+#define K210_PC_IE_INV BIT(21) /* INVert function-controlled Input Enable */
+#define K210_PC_DI_INV BIT(22) /* INVert Data Input */
+#define K210_PC_ST BIT(23) /* Schmitt Trigger */
+#define K210_PC_DI BIT(31) /* raw Data Input */
+#define K210_PC_BIAS_MASK (K210_PC_PU & K210_PC_PD)
+
+#define K210_PC_MODE_IN (K210_PC_IE | K210_PC_ST)
+#define K210_PC_MODE_OUT (K210_PC_DRIVE_7 | K210_PC_OE)
+#define K210_PC_MODE_I2C (K210_PC_MODE_IN | K210_PC_SL | K210_PC_OE | \
+ K210_PC_PU)
+#define K210_PC_MODE_SCCB (K210_PC_MODE_I2C | K210_PC_OE_INV | K210_PC_IE_INV)
+#define K210_PC_MODE_SPI (K210_PC_MODE_IN | K210_PC_IE_INV | \
+ K210_PC_MODE_OUT | K210_PC_OE_INV)
+#define K210_PC_MODE_GPIO (K210_PC_MODE_IN | K210_PC_MODE_OUT)
+
+#define K210_PG_FUNC GENMASK(7, 0)
+#define K210_PG_DO BIT(8)
+#define K210_PG_PIN GENMASK(22, 16)
+
+#define PIN_CONFIG_OUTPUT_INVERT (PIN_CONFIG_END + 1)
+#define PIN_CONFIG_INPUT_INVERT (PIN_CONFIG_END + 2)
+
+struct k210_fpioa {
+ u32 pins[48];
+ u32 tie_en[8];
+ u32 tie_val[8];
+};
+
+struct k210_pc_priv {
+ struct clk clk;
+ struct k210_fpioa __iomem *fpioa; /* FPIOA register */
+ struct regmap *sysctl; /* Sysctl regmap */
+ u32 power_offset; /* Power bank register offset */
+};
+
+#ifdef CONFIG_CMD_PINMUX
+static const char k210_pc_pin_names[][6] = {
+#define PIN(i) \
+ [i] = "IO_" #i
+ PIN(0),
+ PIN(1),
+ PIN(2),
+ PIN(3),
+ PIN(4),
+ PIN(5),
+ PIN(6),
+ PIN(7),
+ PIN(8),
+ PIN(9),
+ PIN(10),
+ PIN(11),
+ PIN(12),
+ PIN(13),
+ PIN(14),
+ PIN(15),
+ PIN(16),
+ PIN(17),
+ PIN(18),
+ PIN(19),
+ PIN(20),
+ PIN(21),
+ PIN(22),
+ PIN(23),
+ PIN(24),
+ PIN(25),
+ PIN(26),
+ PIN(27),
+ PIN(28),
+ PIN(29),
+ PIN(30),
+ PIN(31),
+ PIN(32),
+ PIN(33),
+ PIN(34),
+ PIN(35),
+ PIN(36),
+ PIN(37),
+ PIN(38),
+ PIN(39),
+ PIN(40),
+ PIN(41),
+ PIN(42),
+ PIN(43),
+ PIN(44),
+ PIN(45),
+ PIN(46),
+ PIN(47),
+#undef PIN
+};
+
+static int k210_pc_get_pins_count(struct udevice *dev)
+{
+ return ARRAY_SIZE(k210_pc_pin_names);
+};
+
+static const char *k210_pc_get_pin_name(struct udevice *dev, unsigned selector)
+{
+ return k210_pc_pin_names[selector];
+}
+#endif /* CONFIG_CMD_PINMUX */
+
+/* These are just power domains */
+static const char k210_pc_group_names[][3] = {
+ [0] = "A0",
+ [1] = "A1",
+ [2] = "A2",
+ [3] = "B3",
+ [4] = "B4",
+ [5] = "B5",
+ [6] = "C6",
+ [7] = "C7",
+};
+
+static int k210_pc_get_groups_count(struct udevice *dev)
+{
+ return ARRAY_SIZE(k210_pc_group_names);
+}
+
+static const char *k210_pc_get_group_name(struct udevice *dev,
+ unsigned selector)
+{
+ return k210_pc_group_names[selector];
+}
+
+enum k210_pc_mode_id {
+ K210_PC_DEFAULT_DISABLED,
+ K210_PC_DEFAULT_IN,
+ K210_PC_DEFAULT_IN_TIE,
+ K210_PC_DEFAULT_OUT,
+ K210_PC_DEFAULT_I2C,
+ K210_PC_DEFAULT_SCCB,
+ K210_PC_DEFAULT_SPI,
+ K210_PC_DEFAULT_GPIO,
+ K210_PC_DEFAULT_INT13,
+};
+
+static const u32 k210_pc_mode_id_to_mode[] = {
+#define DEFAULT(mode) \
+ [K210_PC_DEFAULT_##mode] = K210_PC_MODE_##mode
+ [K210_PC_DEFAULT_DISABLED] = 0,
+ DEFAULT(IN),
+ [K210_PC_DEFAULT_IN_TIE] = K210_PC_MODE_IN,
+ DEFAULT(OUT),
+ DEFAULT(I2C),
+ DEFAULT(SCCB),
+ DEFAULT(SPI),
+ DEFAULT(GPIO),
+ [K210_PC_DEFAULT_INT13] = K210_PC_MODE_IN | K210_PC_PU,
+#undef DEFAULT
+};
+
+/* This saves around 2K vs having a pointer+mode */
+struct k210_pcf_info {
+#ifdef CONFIG_CMD_PINMUX
+ char name[15];
+#endif
+ u8 mode_id;
+};
+
+static const struct k210_pcf_info k210_pcf_infos[] = {
+#ifdef CONFIG_CMD_PINMUX
+#define FUNC(id, mode) \
+ [K210_PCF_##id] = { \
+ .name = #id, \
+ .mode_id = K210_PC_DEFAULT_##mode \
+ }
+#else
+#define FUNC(id, mode) \
+ [K210_PCF_##id] = { \
+ .mode_id = K210_PC_DEFAULT_##mode \
+ }
+#endif
+ FUNC(JTAG_TCLK, IN),
+ FUNC(JTAG_TDI, IN),
+ FUNC(JTAG_TMS, IN),
+ FUNC(JTAG_TDO, OUT),
+ FUNC(SPI0_D0, SPI),
+ FUNC(SPI0_D1, SPI),
+ FUNC(SPI0_D2, SPI),
+ FUNC(SPI0_D3, SPI),
+ FUNC(SPI0_D4, SPI),
+ FUNC(SPI0_D5, SPI),
+ FUNC(SPI0_D6, SPI),
+ FUNC(SPI0_D7, SPI),
+ FUNC(SPI0_SS0, OUT),
+ FUNC(SPI0_SS1, OUT),
+ FUNC(SPI0_SS2, OUT),
+ FUNC(SPI0_SS3, OUT),
+ FUNC(SPI0_ARB, IN_TIE),
+ FUNC(SPI0_SCLK, OUT),
+ FUNC(UARTHS_RX, IN),
+ FUNC(UARTHS_TX, OUT),
+ FUNC(RESV6, IN),
+ FUNC(RESV7, IN),
+ FUNC(CLK_SPI1, OUT),
+ FUNC(CLK_I2C1, OUT),
+ FUNC(GPIOHS0, GPIO),
+ FUNC(GPIOHS1, GPIO),
+ FUNC(GPIOHS2, GPIO),
+ FUNC(GPIOHS3, GPIO),
+ FUNC(GPIOHS4, GPIO),
+ FUNC(GPIOHS5, GPIO),
+ FUNC(GPIOHS6, GPIO),
+ FUNC(GPIOHS7, GPIO),
+ FUNC(GPIOHS8, GPIO),
+ FUNC(GPIOHS9, GPIO),
+ FUNC(GPIOHS10, GPIO),
+ FUNC(GPIOHS11, GPIO),
+ FUNC(GPIOHS12, GPIO),
+ FUNC(GPIOHS13, GPIO),
+ FUNC(GPIOHS14, GPIO),
+ FUNC(GPIOHS15, GPIO),
+ FUNC(GPIOHS16, GPIO),
+ FUNC(GPIOHS17, GPIO),
+ FUNC(GPIOHS18, GPIO),
+ FUNC(GPIOHS19, GPIO),
+ FUNC(GPIOHS20, GPIO),
+ FUNC(GPIOHS21, GPIO),
+ FUNC(GPIOHS22, GPIO),
+ FUNC(GPIOHS23, GPIO),
+ FUNC(GPIOHS24, GPIO),
+ FUNC(GPIOHS25, GPIO),
+ FUNC(GPIOHS26, GPIO),
+ FUNC(GPIOHS27, GPIO),
+ FUNC(GPIOHS28, GPIO),
+ FUNC(GPIOHS29, GPIO),
+ FUNC(GPIOHS30, GPIO),
+ FUNC(GPIOHS31, GPIO),
+ FUNC(GPIO0, GPIO),
+ FUNC(GPIO1, GPIO),
+ FUNC(GPIO2, GPIO),
+ FUNC(GPIO3, GPIO),
+ FUNC(GPIO4, GPIO),
+ FUNC(GPIO5, GPIO),
+ FUNC(GPIO6, GPIO),
+ FUNC(GPIO7, GPIO),
+ FUNC(UART1_RX, IN),
+ FUNC(UART1_TX, OUT),
+ FUNC(UART2_RX, IN),
+ FUNC(UART2_TX, OUT),
+ FUNC(UART3_RX, IN),
+ FUNC(UART3_TX, OUT),
+ FUNC(SPI1_D0, SPI),
+ FUNC(SPI1_D1, SPI),
+ FUNC(SPI1_D2, SPI),
+ FUNC(SPI1_D3, SPI),
+ FUNC(SPI1_D4, SPI),
+ FUNC(SPI1_D5, SPI),
+ FUNC(SPI1_D6, SPI),
+ FUNC(SPI1_D7, SPI),
+ FUNC(SPI1_SS0, OUT),
+ FUNC(SPI1_SS1, OUT),
+ FUNC(SPI1_SS2, OUT),
+ FUNC(SPI1_SS3, OUT),
+ FUNC(SPI1_ARB, IN_TIE),
+ FUNC(SPI1_SCLK, OUT),
+ FUNC(SPI2_D0, SPI),
+ FUNC(SPI2_SS, IN),
+ FUNC(SPI2_SCLK, IN),
+ FUNC(I2S0_MCLK, OUT),
+ FUNC(I2S0_SCLK, OUT),
+ FUNC(I2S0_WS, OUT),
+ FUNC(I2S0_IN_D0, IN),
+ FUNC(I2S0_IN_D1, IN),
+ FUNC(I2S0_IN_D2, IN),
+ FUNC(I2S0_IN_D3, IN),
+ FUNC(I2S0_OUT_D0, OUT),
+ FUNC(I2S0_OUT_D1, OUT),
+ FUNC(I2S0_OUT_D2, OUT),
+ FUNC(I2S0_OUT_D3, OUT),
+ FUNC(I2S1_MCLK, OUT),
+ FUNC(I2S1_SCLK, OUT),
+ FUNC(I2S1_WS, OUT),
+ FUNC(I2S1_IN_D0, IN),
+ FUNC(I2S1_IN_D1, IN),
+ FUNC(I2S1_IN_D2, IN),
+ FUNC(I2S1_IN_D3, IN),
+ FUNC(I2S1_OUT_D0, OUT),
+ FUNC(I2S1_OUT_D1, OUT),
+ FUNC(I2S1_OUT_D2, OUT),
+ FUNC(I2S1_OUT_D3, OUT),
+ FUNC(I2S2_MCLK, OUT),
+ FUNC(I2S2_SCLK, OUT),
+ FUNC(I2S2_WS, OUT),
+ FUNC(I2S2_IN_D0, IN),
+ FUNC(I2S2_IN_D1, IN),
+ FUNC(I2S2_IN_D2, IN),
+ FUNC(I2S2_IN_D3, IN),
+ FUNC(I2S2_OUT_D0, OUT),
+ FUNC(I2S2_OUT_D1, OUT),
+ FUNC(I2S2_OUT_D2, OUT),
+ FUNC(I2S2_OUT_D3, OUT),
+ FUNC(RESV0, DISABLED),
+ FUNC(RESV1, DISABLED),
+ FUNC(RESV2, DISABLED),
+ FUNC(RESV3, DISABLED),
+ FUNC(RESV4, DISABLED),
+ FUNC(RESV5, DISABLED),
+ FUNC(I2C0_SCLK, I2C),
+ FUNC(I2C0_SDA, I2C),
+ FUNC(I2C1_SCLK, I2C),
+ FUNC(I2C1_SDA, I2C),
+ FUNC(I2C2_SCLK, I2C),
+ FUNC(I2C2_SDA, I2C),
+ FUNC(DVP_XCLK, OUT),
+ FUNC(DVP_RST, OUT),
+ FUNC(DVP_PWDN, OUT),
+ FUNC(DVP_VSYNC, IN),
+ FUNC(DVP_HSYNC, IN),
+ FUNC(DVP_PCLK, IN),
+ FUNC(DVP_D0, IN),
+ FUNC(DVP_D1, IN),
+ FUNC(DVP_D2, IN),
+ FUNC(DVP_D3, IN),
+ FUNC(DVP_D4, IN),
+ FUNC(DVP_D5, IN),
+ FUNC(DVP_D6, IN),
+ FUNC(DVP_D7, IN),
+ FUNC(SCCB_SCLK, SCCB),
+ FUNC(SCCB_SDA, SCCB),
+ FUNC(UART1_CTS, IN),
+ FUNC(UART1_DSR, IN),
+ FUNC(UART1_DCD, IN),
+ FUNC(UART1_RI, IN),
+ FUNC(UART1_SIR_IN, IN),
+ FUNC(UART1_DTR, OUT),
+ FUNC(UART1_RTS, OUT),
+ FUNC(UART1_OUT2, OUT),
+ FUNC(UART1_OUT1, OUT),
+ FUNC(UART1_SIR_OUT, OUT),
+ FUNC(UART1_BAUD, OUT),
+ FUNC(UART1_RE, OUT),
+ FUNC(UART1_DE, OUT),
+ FUNC(UART1_RS485_EN, OUT),
+ FUNC(UART2_CTS, IN),
+ FUNC(UART2_DSR, IN),
+ FUNC(UART2_DCD, IN),
+ FUNC(UART2_RI, IN),
+ FUNC(UART2_SIR_IN, IN),
+ FUNC(UART2_DTR, OUT),
+ FUNC(UART2_RTS, OUT),
+ FUNC(UART2_OUT2, OUT),
+ FUNC(UART2_OUT1, OUT),
+ FUNC(UART2_SIR_OUT, OUT),
+ FUNC(UART2_BAUD, OUT),
+ FUNC(UART2_RE, OUT),
+ FUNC(UART2_DE, OUT),
+ FUNC(UART2_RS485_EN, OUT),
+ FUNC(UART3_CTS, IN),
+ FUNC(UART3_DSR, IN),
+ FUNC(UART3_DCD, IN),
+ FUNC(UART3_RI, IN),
+ FUNC(UART3_SIR_IN, IN),
+ FUNC(UART3_DTR, OUT),
+ FUNC(UART3_RTS, OUT),
+ FUNC(UART3_OUT2, OUT),
+ FUNC(UART3_OUT1, OUT),
+ FUNC(UART3_SIR_OUT, OUT),
+ FUNC(UART3_BAUD, OUT),
+ FUNC(UART3_RE, OUT),
+ FUNC(UART3_DE, OUT),
+ FUNC(UART3_RS485_EN, OUT),
+ FUNC(TIMER0_TOGGLE1, OUT),
+ FUNC(TIMER0_TOGGLE2, OUT),
+ FUNC(TIMER0_TOGGLE3, OUT),
+ FUNC(TIMER0_TOGGLE4, OUT),
+ FUNC(TIMER1_TOGGLE1, OUT),
+ FUNC(TIMER1_TOGGLE2, OUT),
+ FUNC(TIMER1_TOGGLE3, OUT),
+ FUNC(TIMER1_TOGGLE4, OUT),
+ FUNC(TIMER2_TOGGLE1, OUT),
+ FUNC(TIMER2_TOGGLE2, OUT),
+ FUNC(TIMER2_TOGGLE3, OUT),
+ FUNC(TIMER2_TOGGLE4, OUT),
+ FUNC(CLK_SPI2, OUT),
+ FUNC(CLK_I2C2, OUT),
+ FUNC(INTERNAL0, OUT),
+ FUNC(INTERNAL1, OUT),
+ FUNC(INTERNAL2, OUT),
+ FUNC(INTERNAL3, OUT),
+ FUNC(INTERNAL4, OUT),
+ FUNC(INTERNAL5, OUT),
+ FUNC(INTERNAL6, OUT),
+ FUNC(INTERNAL7, OUT),
+ FUNC(INTERNAL8, OUT),
+ FUNC(INTERNAL9, IN),
+ FUNC(INTERNAL10, IN),
+ FUNC(INTERNAL11, IN),
+ FUNC(INTERNAL12, IN),
+ FUNC(INTERNAL13, INT13),
+ FUNC(INTERNAL14, I2C),
+ FUNC(INTERNAL15, IN),
+ FUNC(INTERNAL16, IN),
+ FUNC(INTERNAL17, IN),
+ FUNC(CONSTANT, DISABLED),
+ FUNC(INTERNAL18, IN),
+ FUNC(DEBUG0, OUT),
+ FUNC(DEBUG1, OUT),
+ FUNC(DEBUG2, OUT),
+ FUNC(DEBUG3, OUT),
+ FUNC(DEBUG4, OUT),
+ FUNC(DEBUG5, OUT),
+ FUNC(DEBUG6, OUT),
+ FUNC(DEBUG7, OUT),
+ FUNC(DEBUG8, OUT),
+ FUNC(DEBUG9, OUT),
+ FUNC(DEBUG10, OUT),
+ FUNC(DEBUG11, OUT),
+ FUNC(DEBUG12, OUT),
+ FUNC(DEBUG13, OUT),
+ FUNC(DEBUG14, OUT),
+ FUNC(DEBUG15, OUT),
+ FUNC(DEBUG16, OUT),
+ FUNC(DEBUG17, OUT),
+ FUNC(DEBUG18, OUT),
+ FUNC(DEBUG19, OUT),
+ FUNC(DEBUG20, OUT),
+ FUNC(DEBUG21, OUT),
+ FUNC(DEBUG22, OUT),
+ FUNC(DEBUG23, OUT),
+ FUNC(DEBUG24, OUT),
+ FUNC(DEBUG25, OUT),
+ FUNC(DEBUG26, OUT),
+ FUNC(DEBUG27, OUT),
+ FUNC(DEBUG28, OUT),
+ FUNC(DEBUG29, OUT),
+ FUNC(DEBUG30, OUT),
+ FUNC(DEBUG31, OUT),
+#undef FUNC
+};
+
+static int k210_pc_pinmux_set(struct udevice *dev, u32 pinmux_group)
+{
+ unsigned pin = FIELD_GET(K210_PG_PIN, pinmux_group);
+ bool do_oe = FIELD_GET(K210_PG_DO, pinmux_group);
+ unsigned func = FIELD_GET(K210_PG_FUNC, pinmux_group);
+ struct k210_pc_priv *priv = dev_get_priv(dev);
+ const struct k210_pcf_info *info = &k210_pcf_infos[func];
+ u32 mode = k210_pc_mode_id_to_mode[info->mode_id];
+ u32 val = func | mode | (do_oe ? K210_PC_DO_OE : 0);
+
+ debug("%s(%.8x): IO_%.2u = %3u | %.8x\n", __func__, pinmux_group, pin,
+ func, mode);
+
+ writel(val, &priv->fpioa->pins[pin]);
+ return pin;
+}
+
+/* Max drive strength in uA */
+static const int k210_pc_drive_strength[] = {
+ [0] = 11200,
+ [1] = 16800,
+ [2] = 22300,
+ [3] = 27800,
+ [4] = 33300,
+ [5] = 38700,
+ [6] = 44100,
+ [7] = 49500,
+};
+
+static int k210_pc_get_drive(unsigned max_strength_ua)
+{
+ int i;
+
+ for (i = K210_PC_DRIVE_MAX; i; i--)
+ if (k210_pc_drive_strength[i] < max_strength_ua)
+ return i;
+
+ return -EINVAL;
+}
+
+static int k210_pc_pinconf_set(struct udevice *dev, unsigned pin_selector,
+ unsigned param, unsigned argument)
+{
+ struct k210_pc_priv *priv = dev_get_priv(dev);
+ u32 val = readl(&priv->fpioa->pins[pin_selector]);
+
+ switch (param) {
+ case PIN_CONFIG_BIAS_DISABLE:
+ val &= ~K210_PC_BIAS_MASK;
+ break;
+ case PIN_CONFIG_BIAS_PULL_DOWN:
+ if (argument)
+ val |= K210_PC_PD;
+ else
+ return -EINVAL;
+ break;
+ case PIN_CONFIG_BIAS_PULL_UP:
+ if (argument)
+ val |= K210_PC_PD;
+ else
+ return -EINVAL;
+ break;
+ case PIN_CONFIG_DRIVE_STRENGTH:
+ argument *= 1000;
+ case PIN_CONFIG_DRIVE_STRENGTH_UA: {
+ int drive = k210_pc_get_drive(argument);
+
+ if (IS_ERR_VALUE(drive))
+ return drive;
+ val &= ~K210_PC_DRIVE_MASK;
+ val |= FIELD_PREP(K210_PC_DRIVE_MASK, drive);
+ break;
+ }
+ case PIN_CONFIG_INPUT_ENABLE:
+ if (argument)
+ val |= K210_PC_IE;
+ else
+ val &= ~K210_PC_IE;
+ break;
+ case PIN_CONFIG_INPUT_SCHMITT:
+ argument = 1;
+ case PIN_CONFIG_INPUT_SCHMITT_ENABLE:
+ if (argument)
+ val |= K210_PC_ST;
+ else
+ val &= ~K210_PC_ST;
+ break;
+ case PIN_CONFIG_OUTPUT:
+ k210_pc_pinmux_set(dev,
+ K210_FPIOA(pin_selector, K210_PCF_CONSTANT));
+ val = readl(&priv->fpioa->pins[pin_selector]);
+ val |= K210_PC_MODE_OUT;
+
+ if (!argument)
+ val |= K210_PC_DO_INV;
+ break;
+ case PIN_CONFIG_OUTPUT_ENABLE:
+ if (argument)
+ val |= K210_PC_OE;
+ else
+ val &= ~K210_PC_OE;
+ break;
+ case PIN_CONFIG_SLEW_RATE:
+ if (argument)
+ val |= K210_PC_SL;
+ else
+ val &= ~K210_PC_SL;
+ break;
+ case PIN_CONFIG_OUTPUT_INVERT:
+ if (argument)
+ val |= K210_PC_DO_INV;
+ else
+ val &= ~K210_PC_DO_INV;
+ break;
+ case PIN_CONFIG_INPUT_INVERT:
+ if (argument)
+ val |= K210_PC_DI_INV;
+ else
+ val &= ~K210_PC_DI_INV;
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ writel(val, &priv->fpioa->pins[pin_selector]);
+ return 0;
+}
+
+static int k210_pc_pinconf_group_set(struct udevice *dev,
+ unsigned group_selector, unsigned param,
+ unsigned argument)
+{
+ struct k210_pc_priv *priv = dev_get_priv(dev);
+
+ if (param == PIN_CONFIG_POWER_SOURCE) {
+ u32 bit = BIT(group_selector);
+
+ regmap_update_bits(priv->sysctl, priv->power_offset, bit,
+ argument ? bit : 0);
+ } else {
+ return -EINVAL;
+ }
+
+ return 0;
+}
+
+#ifdef CONFIG_CMD_PINMUX
+static int k210_pc_get_pin_muxing(struct udevice *dev, unsigned int selector,
+ char *buf, int size)
+{
+ struct k210_pc_priv *priv = dev_get_priv(dev);
+ u32 val = readl(&priv->fpioa->pins[selector]);
+ const struct k210_pcf_info *info = &k210_pcf_infos[val & K210_PCF_MASK];
+
+ strncpy(buf, info->name, min((size_t)size, sizeof(info->name)));
+ return 0;
+}
+#endif
+
+static const struct pinconf_param k210_pc_pinconf_params[] = {
+ { "bias-disable", PIN_CONFIG_BIAS_DISABLE, 0 },
+ { "bias-pull-down", PIN_CONFIG_BIAS_PULL_DOWN, 1 },
+ { "bias-pull-up", PIN_CONFIG_BIAS_PULL_UP, 1 },
+ { "drive-strength", PIN_CONFIG_DRIVE_STRENGTH, U32_MAX },
+ { "drive-strength-ua", PIN_CONFIG_DRIVE_STRENGTH_UA, U32_MAX },
+ { "input-enable", PIN_CONFIG_INPUT_ENABLE, 1 },
+ { "input-disable", PIN_CONFIG_INPUT_ENABLE, 0 },
+ { "input-schmitt-enable", PIN_CONFIG_INPUT_SCHMITT_ENABLE, 1 },
+ { "input-schmitt-disable", PIN_CONFIG_INPUT_SCHMITT_ENABLE, 0 },
+ { "power-source", PIN_CONFIG_POWER_SOURCE, K210_PC_POWER_1V8 },
+ { "output-low", PIN_CONFIG_OUTPUT, 0 },
+ { "output-high", PIN_CONFIG_OUTPUT, 1 },
+ { "output-enable", PIN_CONFIG_OUTPUT_ENABLE, 1 },
+ { "output-disable", PIN_CONFIG_OUTPUT_ENABLE, 0 },
+ { "slew-rate", PIN_CONFIG_SLEW_RATE, 1 },
+ { "output-polarity-invert", PIN_CONFIG_OUTPUT_INVERT, 1},
+ { "input-polarity-invert", PIN_CONFIG_INPUT_INVERT, 1},
+};
+
+static const struct pinctrl_ops k210_pc_pinctrl_ops = {
+#ifdef CONFIG_CMD_PINMUX
+ .get_pins_count = k210_pc_get_pins_count,
+ .get_pin_name = k210_pc_get_pin_name,
+#endif
+ .get_groups_count = k210_pc_get_groups_count,
+ .get_group_name = k210_pc_get_group_name,
+ .pinmux_property_set = k210_pc_pinmux_set,
+ .pinconf_num_params = ARRAY_SIZE(k210_pc_pinconf_params),
+ .pinconf_params = k210_pc_pinconf_params,
+ .pinconf_set = k210_pc_pinconf_set,
+ .pinconf_group_set = k210_pc_pinconf_group_set,
+ .set_state = pinctrl_generic_set_state,
+#ifdef CONFIG_CMD_PINMUX
+ .get_pin_muxing = k210_pc_get_pin_muxing,
+#endif
+};
+
+static int k210_pc_probe(struct udevice *dev)
+{
+ int ret, i, j;
+ struct k210_pc_priv *priv = dev_get_priv(dev);
+
+ priv->fpioa = dev_read_addr_ptr(dev);
+ if (!priv->fpioa)
+ return -EINVAL;
+
+ ret = clk_get_by_index(dev, 0, &priv->clk);
+ if (ret)
+ return ret;
+
+ ret = clk_enable(&priv->clk);
+ if (ret && ret != -ENOSYS && ret != -ENOTSUPP)
+ goto err;
+
+ priv->sysctl = syscon_regmap_lookup_by_phandle(dev, "kendryte,sysctl");
+ if (IS_ERR(priv->sysctl)) {
+ ret = -ENODEV;
+ goto err;
+ }
+
+ ret = dev_read_u32(dev, "kendryte,power-offset", &priv->power_offset);
+ if (ret)
+ goto err;
+
+ debug("%s: fpioa = %p sysctl = %p power offset = %x\n", __func__,
+ priv->fpioa, (void *)priv->sysctl->ranges[0].start,
+ priv->power_offset);
+
+ /* Init input ties */
+ for (i = 0; i < ARRAY_SIZE(priv->fpioa->tie_en); i++) {
+ u32 val = 0;
+
+ for (j = 0; j < 32; j++)
+ if (k210_pcf_infos[i * 32 + j].mode_id ==
+ K210_PC_DEFAULT_IN_TIE)
+ val |= BIT(j);
+ writel(val, &priv->fpioa->tie_en[i]);
+ writel(val, &priv->fpioa->tie_val[i]);
+ }
+
+ return 0;
+
+err:
+ clk_free(&priv->clk);
+ return ret;
+}
+
+static const struct udevice_id k210_pc_ids[] = {
+ { .compatible = "kendryte,k210-fpioa" },
+ { }
+};
+
+U_BOOT_DRIVER(pinctrl_k210) = {
+ .name = "pinctrl_k210",
+ .id = UCLASS_PINCTRL,
+ .of_match = k210_pc_ids,
+ .probe = k210_pc_probe,
+ .priv_auto = sizeof(struct k210_pc_priv),
+ .ops = &k210_pc_pinctrl_ops,
+};