| // 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, |
| }; |