| Author | Tokens | Token Proportion | Commits | Commit Proportion |
|---|---|---|---|---|
| Damien Le Moal | 5155 | 99.94% | 2 | 50.00% |
| Dan Carpenter | 2 | 0.04% | 1 | 25.00% |
| Sean Anderson | 1 | 0.02% | 1 | 25.00% |
| Total | 5158 | 4 |
// SPDX-License-Identifier: GPL-2.0-or-later /* * Copyright (C) 2020 Sean Anderson <seanga2@gmail.com> * Copyright (c) 2020 Western Digital Corporation or its affiliates. */ #include <linux/io.h> #include <linux/of_device.h> #include <linux/clk.h> #include <linux/mfd/syscon.h> #include <linux/platform_device.h> #include <linux/bitfield.h> #include <linux/regmap.h> #include <linux/slab.h> #include <linux/pinctrl/pinctrl.h> #include <linux/pinctrl/pinmux.h> #include <linux/pinctrl/pinconf.h> #include <linux/pinctrl/pinconf-generic.h> #include <dt-bindings/pinctrl/k210-fpioa.h> #include "core.h" #include "pinconf.h" #include "pinctrl-utils.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 Output Enable */ #define K210_PC_DO_OE BIT(14) /* set Data Out to Output Enable sig */ #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 */ /* Same semantics as OE above */ #define K210_PC_IE BIT(20) /* Input Enable */ #define K210_PC_IE_INV BIT(21) /* INVert 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) /* * struct k210_fpioa: Kendryte K210 FPIOA memory mapped registers * @pins: 48 32-bits IO pin registers * @tie_en: 256 (one per function) input tie enable bits * @tie_val: 256 (one per function) input tie value bits */ struct k210_fpioa { u32 pins[48]; u32 tie_en[8]; u32 tie_val[8]; }; struct k210_fpioa_data { struct device *dev; struct pinctrl_dev *pctl; struct k210_fpioa __iomem *fpioa; struct regmap *sysctl_map; u32 power_offset; struct clk *clk; struct clk *pclk; }; #define K210_PIN_NAME(i) ("IO_" #i) #define K210_PIN(i) [(i)] = PINCTRL_PIN((i), K210_PIN_NAME(i)) static const struct pinctrl_pin_desc k210_pins[] = { K210_PIN(0), K210_PIN(1), K210_PIN(2), K210_PIN(3), K210_PIN(4), K210_PIN(5), K210_PIN(6), K210_PIN(7), K210_PIN(8), K210_PIN(9), K210_PIN(10), K210_PIN(11), K210_PIN(12), K210_PIN(13), K210_PIN(14), K210_PIN(15), K210_PIN(16), K210_PIN(17), K210_PIN(18), K210_PIN(19), K210_PIN(20), K210_PIN(21), K210_PIN(22), K210_PIN(23), K210_PIN(24), K210_PIN(25), K210_PIN(26), K210_PIN(27), K210_PIN(28), K210_PIN(29), K210_PIN(30), K210_PIN(31), K210_PIN(32), K210_PIN(33), K210_PIN(34), K210_PIN(35), K210_PIN(36), K210_PIN(37), K210_PIN(38), K210_PIN(39), K210_PIN(40), K210_PIN(41), K210_PIN(42), K210_PIN(43), K210_PIN(44), K210_PIN(45), K210_PIN(46), K210_PIN(47) }; #define K210_NPINS ARRAY_SIZE(k210_pins) /* * Pin groups: each of the 48 programmable pins is a group. * To this are added 8 power domain groups, which for the purposes of * the pin subsystem, contain no pins. The power domain groups only exist * to set the power level. The id should never be used (since there are * no pins 48-55). */ static const char *const k210_group_names[] = { /* The first 48 groups are for pins, one each */ K210_PIN_NAME(0), K210_PIN_NAME(1), K210_PIN_NAME(2), K210_PIN_NAME(3), K210_PIN_NAME(4), K210_PIN_NAME(5), K210_PIN_NAME(6), K210_PIN_NAME(7), K210_PIN_NAME(8), K210_PIN_NAME(9), K210_PIN_NAME(10), K210_PIN_NAME(11), K210_PIN_NAME(12), K210_PIN_NAME(13), K210_PIN_NAME(14), K210_PIN_NAME(15), K210_PIN_NAME(16), K210_PIN_NAME(17), K210_PIN_NAME(18), K210_PIN_NAME(19), K210_PIN_NAME(20), K210_PIN_NAME(21), K210_PIN_NAME(22), K210_PIN_NAME(23), K210_PIN_NAME(24), K210_PIN_NAME(25), K210_PIN_NAME(26), K210_PIN_NAME(27), K210_PIN_NAME(28), K210_PIN_NAME(29), K210_PIN_NAME(30), K210_PIN_NAME(31), K210_PIN_NAME(32), K210_PIN_NAME(33), K210_PIN_NAME(34), K210_PIN_NAME(35), K210_PIN_NAME(36), K210_PIN_NAME(37), K210_PIN_NAME(38), K210_PIN_NAME(39), K210_PIN_NAME(40), K210_PIN_NAME(41), K210_PIN_NAME(42), K210_PIN_NAME(43), K210_PIN_NAME(44), K210_PIN_NAME(45), K210_PIN_NAME(46), K210_PIN_NAME(47), [48] = "A0", [49] = "A1", [50] = "A2", [51] = "B3", [52] = "B4", [53] = "B5", [54] = "C6", [55] = "C7" }; #define K210_NGROUPS ARRAY_SIZE(k210_group_names) enum k210_pinctrl_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, }; #define K210_PC_DEFAULT(mode) \ [K210_PC_DEFAULT_##mode] = K210_PC_MODE_##mode static const u32 k210_pinconf_mode_id_to_mode[] = { [K210_PC_DEFAULT_DISABLED] = 0, K210_PC_DEFAULT(IN), [K210_PC_DEFAULT_IN_TIE] = K210_PC_MODE_IN, K210_PC_DEFAULT(OUT), K210_PC_DEFAULT(I2C), K210_PC_DEFAULT(SCCB), K210_PC_DEFAULT(SPI), K210_PC_DEFAULT(GPIO), [K210_PC_DEFAULT_INT13] = K210_PC_MODE_IN | K210_PC_PU, }; #undef DEFAULT /* * Pin functions configuration information. */ struct k210_pcf_info { char name[15]; u8 mode_id; }; #define K210_FUNC(id, mode) \ [K210_PCF_##id] = { \ .name = #id, \ .mode_id = K210_PC_DEFAULT_##mode \ } static const struct k210_pcf_info k210_pcf_infos[] = { K210_FUNC(JTAG_TCLK, IN), K210_FUNC(JTAG_TDI, IN), K210_FUNC(JTAG_TMS, IN), K210_FUNC(JTAG_TDO, OUT), K210_FUNC(SPI0_D0, SPI), K210_FUNC(SPI0_D1, SPI), K210_FUNC(SPI0_D2, SPI), K210_FUNC(SPI0_D3, SPI), K210_FUNC(SPI0_D4, SPI), K210_FUNC(SPI0_D5, SPI), K210_FUNC(SPI0_D6, SPI), K210_FUNC(SPI0_D7, SPI), K210_FUNC(SPI0_SS0, OUT), K210_FUNC(SPI0_SS1, OUT), K210_FUNC(SPI0_SS2, OUT), K210_FUNC(SPI0_SS3, OUT), K210_FUNC(SPI0_ARB, IN_TIE), K210_FUNC(SPI0_SCLK, OUT), K210_FUNC(UARTHS_RX, IN), K210_FUNC(UARTHS_TX, OUT), K210_FUNC(RESV6, IN), K210_FUNC(RESV7, IN), K210_FUNC(CLK_SPI1, OUT), K210_FUNC(CLK_I2C1, OUT), K210_FUNC(GPIOHS0, GPIO), K210_FUNC(GPIOHS1, GPIO), K210_FUNC(GPIOHS2, GPIO), K210_FUNC(GPIOHS3, GPIO), K210_FUNC(GPIOHS4, GPIO), K210_FUNC(GPIOHS5, GPIO), K210_FUNC(GPIOHS6, GPIO), K210_FUNC(GPIOHS7, GPIO), K210_FUNC(GPIOHS8, GPIO), K210_FUNC(GPIOHS9, GPIO), K210_FUNC(GPIOHS10, GPIO), K210_FUNC(GPIOHS11, GPIO), K210_FUNC(GPIOHS12, GPIO), K210_FUNC(GPIOHS13, GPIO), K210_FUNC(GPIOHS14, GPIO), K210_FUNC(GPIOHS15, GPIO), K210_FUNC(GPIOHS16, GPIO), K210_FUNC(GPIOHS17, GPIO), K210_FUNC(GPIOHS18, GPIO), K210_FUNC(GPIOHS19, GPIO), K210_FUNC(GPIOHS20, GPIO), K210_FUNC(GPIOHS21, GPIO), K210_FUNC(GPIOHS22, GPIO), K210_FUNC(GPIOHS23, GPIO), K210_FUNC(GPIOHS24, GPIO), K210_FUNC(GPIOHS25, GPIO), K210_FUNC(GPIOHS26, GPIO), K210_FUNC(GPIOHS27, GPIO), K210_FUNC(GPIOHS28, GPIO), K210_FUNC(GPIOHS29, GPIO), K210_FUNC(GPIOHS30, GPIO), K210_FUNC(GPIOHS31, GPIO), K210_FUNC(GPIO0, GPIO), K210_FUNC(GPIO1, GPIO), K210_FUNC(GPIO2, GPIO), K210_FUNC(GPIO3, GPIO), K210_FUNC(GPIO4, GPIO), K210_FUNC(GPIO5, GPIO), K210_FUNC(GPIO6, GPIO), K210_FUNC(GPIO7, GPIO), K210_FUNC(UART1_RX, IN), K210_FUNC(UART1_TX, OUT), K210_FUNC(UART2_RX, IN), K210_FUNC(UART2_TX, OUT), K210_FUNC(UART3_RX, IN), K210_FUNC(UART3_TX, OUT), K210_FUNC(SPI1_D0, SPI), K210_FUNC(SPI1_D1, SPI), K210_FUNC(SPI1_D2, SPI), K210_FUNC(SPI1_D3, SPI), K210_FUNC(SPI1_D4, SPI), K210_FUNC(SPI1_D5, SPI), K210_FUNC(SPI1_D6, SPI), K210_FUNC(SPI1_D7, SPI), K210_FUNC(SPI1_SS0, OUT), K210_FUNC(SPI1_SS1, OUT), K210_FUNC(SPI1_SS2, OUT), K210_FUNC(SPI1_SS3, OUT), K210_FUNC(SPI1_ARB, IN_TIE), K210_FUNC(SPI1_SCLK, OUT), K210_FUNC(SPI2_D0, SPI), K210_FUNC(SPI2_SS, IN), K210_FUNC(SPI2_SCLK, IN), K210_FUNC(I2S0_MCLK, OUT), K210_FUNC(I2S0_SCLK, OUT), K210_FUNC(I2S0_WS, OUT), K210_FUNC(I2S0_IN_D0, IN), K210_FUNC(I2S0_IN_D1, IN), K210_FUNC(I2S0_IN_D2, IN), K210_FUNC(I2S0_IN_D3, IN), K210_FUNC(I2S0_OUT_D0, OUT), K210_FUNC(I2S0_OUT_D1, OUT), K210_FUNC(I2S0_OUT_D2, OUT), K210_FUNC(I2S0_OUT_D3, OUT), K210_FUNC(I2S1_MCLK, OUT), K210_FUNC(I2S1_SCLK, OUT), K210_FUNC(I2S1_WS, OUT), K210_FUNC(I2S1_IN_D0, IN), K210_FUNC(I2S1_IN_D1, IN), K210_FUNC(I2S1_IN_D2, IN), K210_FUNC(I2S1_IN_D3, IN), K210_FUNC(I2S1_OUT_D0, OUT), K210_FUNC(I2S1_OUT_D1, OUT), K210_FUNC(I2S1_OUT_D2, OUT), K210_FUNC(I2S1_OUT_D3, OUT), K210_FUNC(I2S2_MCLK, OUT), K210_FUNC(I2S2_SCLK, OUT), K210_FUNC(I2S2_WS, OUT), K210_FUNC(I2S2_IN_D0, IN), K210_FUNC(I2S2_IN_D1, IN), K210_FUNC(I2S2_IN_D2, IN), K210_FUNC(I2S2_IN_D3, IN), K210_FUNC(I2S2_OUT_D0, OUT), K210_FUNC(I2S2_OUT_D1, OUT), K210_FUNC(I2S2_OUT_D2, OUT), K210_FUNC(I2S2_OUT_D3, OUT), K210_FUNC(RESV0, DISABLED), K210_FUNC(RESV1, DISABLED), K210_FUNC(RESV2, DISABLED), K210_FUNC(RESV3, DISABLED), K210_FUNC(RESV4, DISABLED), K210_FUNC(RESV5, DISABLED), K210_FUNC(I2C0_SCLK, I2C), K210_FUNC(I2C0_SDA, I2C), K210_FUNC(I2C1_SCLK, I2C), K210_FUNC(I2C1_SDA, I2C), K210_FUNC(I2C2_SCLK, I2C), K210_FUNC(I2C2_SDA, I2C), K210_FUNC(DVP_XCLK, OUT), K210_FUNC(DVP_RST, OUT), K210_FUNC(DVP_PWDN, OUT), K210_FUNC(DVP_VSYNC, IN), K210_FUNC(DVP_HSYNC, IN), K210_FUNC(DVP_PCLK, IN), K210_FUNC(DVP_D0, IN), K210_FUNC(DVP_D1, IN), K210_FUNC(DVP_D2, IN), K210_FUNC(DVP_D3, IN), K210_FUNC(DVP_D4, IN), K210_FUNC(DVP_D5, IN), K210_FUNC(DVP_D6, IN), K210_FUNC(DVP_D7, IN), K210_FUNC(SCCB_SCLK, SCCB), K210_FUNC(SCCB_SDA, SCCB), K210_FUNC(UART1_CTS, IN), K210_FUNC(UART1_DSR, IN), K210_FUNC(UART1_DCD, IN), K210_FUNC(UART1_RI, IN), K210_FUNC(UART1_SIR_IN, IN), K210_FUNC(UART1_DTR, OUT), K210_FUNC(UART1_RTS, OUT), K210_FUNC(UART1_OUT2, OUT), K210_FUNC(UART1_OUT1, OUT), K210_FUNC(UART1_SIR_OUT, OUT), K210_FUNC(UART1_BAUD, OUT), K210_FUNC(UART1_RE, OUT), K210_FUNC(UART1_DE, OUT), K210_FUNC(UART1_RS485_EN, OUT), K210_FUNC(UART2_CTS, IN), K210_FUNC(UART2_DSR, IN), K210_FUNC(UART2_DCD, IN), K210_FUNC(UART2_RI, IN), K210_FUNC(UART2_SIR_IN, IN), K210_FUNC(UART2_DTR, OUT), K210_FUNC(UART2_RTS, OUT), K210_FUNC(UART2_OUT2, OUT), K210_FUNC(UART2_OUT1, OUT), K210_FUNC(UART2_SIR_OUT, OUT), K210_FUNC(UART2_BAUD, OUT), K210_FUNC(UART2_RE, OUT), K210_FUNC(UART2_DE, OUT), K210_FUNC(UART2_RS485_EN, OUT), K210_FUNC(UART3_CTS, IN), K210_FUNC(UART3_DSR, IN), K210_FUNC(UART3_DCD, IN), K210_FUNC(UART3_RI, IN), K210_FUNC(UART3_SIR_IN, IN), K210_FUNC(UART3_DTR, OUT), K210_FUNC(UART3_RTS, OUT), K210_FUNC(UART3_OUT2, OUT), K210_FUNC(UART3_OUT1, OUT), K210_FUNC(UART3_SIR_OUT, OUT), K210_FUNC(UART3_BAUD, OUT), K210_FUNC(UART3_RE, OUT), K210_FUNC(UART3_DE, OUT), K210_FUNC(UART3_RS485_EN, OUT), K210_FUNC(TIMER0_TOGGLE1, OUT), K210_FUNC(TIMER0_TOGGLE2, OUT), K210_FUNC(TIMER0_TOGGLE3, OUT), K210_FUNC(TIMER0_TOGGLE4, OUT), K210_FUNC(TIMER1_TOGGLE1, OUT), K210_FUNC(TIMER1_TOGGLE2, OUT), K210_FUNC(TIMER1_TOGGLE3, OUT), K210_FUNC(TIMER1_TOGGLE4, OUT), K210_FUNC(TIMER2_TOGGLE1, OUT), K210_FUNC(TIMER2_TOGGLE2, OUT), K210_FUNC(TIMER2_TOGGLE3, OUT), K210_FUNC(TIMER2_TOGGLE4, OUT), K210_FUNC(CLK_SPI2, OUT), K210_FUNC(CLK_I2C2, OUT), K210_FUNC(INTERNAL0, OUT), K210_FUNC(INTERNAL1, OUT), K210_FUNC(INTERNAL2, OUT), K210_FUNC(INTERNAL3, OUT), K210_FUNC(INTERNAL4, OUT), K210_FUNC(INTERNAL5, OUT), K210_FUNC(INTERNAL6, OUT), K210_FUNC(INTERNAL7, OUT), K210_FUNC(INTERNAL8, OUT), K210_FUNC(INTERNAL9, IN), K210_FUNC(INTERNAL10, IN), K210_FUNC(INTERNAL11, IN), K210_FUNC(INTERNAL12, IN), K210_FUNC(INTERNAL13, INT13), K210_FUNC(INTERNAL14, I2C), K210_FUNC(INTERNAL15, IN), K210_FUNC(INTERNAL16, IN), K210_FUNC(INTERNAL17, IN), K210_FUNC(CONSTANT, DISABLED), K210_FUNC(INTERNAL18, IN), K210_FUNC(DEBUG0, OUT), K210_FUNC(DEBUG1, OUT), K210_FUNC(DEBUG2, OUT), K210_FUNC(DEBUG3, OUT), K210_FUNC(DEBUG4, OUT), K210_FUNC(DEBUG5, OUT), K210_FUNC(DEBUG6, OUT), K210_FUNC(DEBUG7, OUT), K210_FUNC(DEBUG8, OUT), K210_FUNC(DEBUG9, OUT), K210_FUNC(DEBUG10, OUT), K210_FUNC(DEBUG11, OUT), K210_FUNC(DEBUG12, OUT), K210_FUNC(DEBUG13, OUT), K210_FUNC(DEBUG14, OUT), K210_FUNC(DEBUG15, OUT), K210_FUNC(DEBUG16, OUT), K210_FUNC(DEBUG17, OUT), K210_FUNC(DEBUG18, OUT), K210_FUNC(DEBUG19, OUT), K210_FUNC(DEBUG20, OUT), K210_FUNC(DEBUG21, OUT), K210_FUNC(DEBUG22, OUT), K210_FUNC(DEBUG23, OUT), K210_FUNC(DEBUG24, OUT), K210_FUNC(DEBUG25, OUT), K210_FUNC(DEBUG26, OUT), K210_FUNC(DEBUG27, OUT), K210_FUNC(DEBUG28, OUT), K210_FUNC(DEBUG29, OUT), K210_FUNC(DEBUG30, OUT), K210_FUNC(DEBUG31, OUT), }; #define PIN_CONFIG_OUTPUT_INVERT (PIN_CONFIG_END + 1) #define PIN_CONFIG_INPUT_INVERT (PIN_CONFIG_END + 2) static const struct pinconf_generic_params k210_pinconf_custom_params[] = { { "output-polarity-invert", PIN_CONFIG_OUTPUT_INVERT, 1 }, { "input-polarity-invert", PIN_CONFIG_INPUT_INVERT, 1 }, }; /* * Max drive strength in uA. */ static const int k210_pinconf_drive_strength[] = { [0] = 11200, [1] = 16800, [2] = 22300, [3] = 27800, [4] = 33300, [5] = 38700, [6] = 44100, [7] = 49500, }; static int k210_pinconf_get_drive(unsigned int max_strength_ua) { int i; for (i = K210_PC_DRIVE_MAX; i >= 0; i--) { if (k210_pinconf_drive_strength[i] <= max_strength_ua) return i; } return -EINVAL; } static void k210_pinmux_set_pin_function(struct pinctrl_dev *pctldev, u32 pin, u32 func) { struct k210_fpioa_data *pdata = pinctrl_dev_get_drvdata(pctldev); const struct k210_pcf_info *info = &k210_pcf_infos[func]; u32 mode = k210_pinconf_mode_id_to_mode[info->mode_id]; u32 val = func | mode; dev_dbg(pdata->dev, "set pin %u function %s (%u) -> 0x%08x\n", pin, info->name, func, val); writel(val, &pdata->fpioa->pins[pin]); } static int k210_pinconf_set_param(struct pinctrl_dev *pctldev, unsigned int pin, unsigned int param, unsigned int arg) { struct k210_fpioa_data *pdata = pinctrl_dev_get_drvdata(pctldev); u32 val = readl(&pdata->fpioa->pins[pin]); int drive; dev_dbg(pdata->dev, "set pin %u param %u, arg 0x%x\n", pin, param, arg); switch (param) { case PIN_CONFIG_BIAS_DISABLE: val &= ~K210_PC_BIAS_MASK; break; case PIN_CONFIG_BIAS_PULL_DOWN: if (!arg) return -EINVAL; val |= K210_PC_PD; break; case PIN_CONFIG_BIAS_PULL_UP: if (!arg) return -EINVAL; val |= K210_PC_PU; break; case PIN_CONFIG_DRIVE_STRENGTH: arg *= 1000; fallthrough; case PIN_CONFIG_DRIVE_STRENGTH_UA: drive = k210_pinconf_get_drive(arg); if (drive < 0) return drive; val &= ~K210_PC_DRIVE_MASK; val |= FIELD_PREP(K210_PC_DRIVE_MASK, drive); break; case PIN_CONFIG_INPUT_ENABLE: if (arg) val |= K210_PC_IE; else val &= ~K210_PC_IE; break; case PIN_CONFIG_INPUT_SCHMITT_ENABLE: if (arg) val |= K210_PC_ST; else val &= ~K210_PC_ST; break; case PIN_CONFIG_OUTPUT: k210_pinmux_set_pin_function(pctldev, pin, K210_PCF_CONSTANT); val = readl(&pdata->fpioa->pins[pin]); val |= K210_PC_MODE_OUT; if (!arg) val |= K210_PC_DO_INV; break; case PIN_CONFIG_OUTPUT_ENABLE: if (arg) val |= K210_PC_OE; else val &= ~K210_PC_OE; break; case PIN_CONFIG_SLEW_RATE: if (arg) val |= K210_PC_SL; else val &= ~K210_PC_SL; break; case PIN_CONFIG_OUTPUT_INVERT: if (arg) val |= K210_PC_DO_INV; else val &= ~K210_PC_DO_INV; break; case PIN_CONFIG_INPUT_INVERT: if (arg) val |= K210_PC_DI_INV; else val &= ~K210_PC_DI_INV; break; default: return -EINVAL; } writel(val, &pdata->fpioa->pins[pin]); return 0; } static int k210_pinconf_set(struct pinctrl_dev *pctldev, unsigned int pin, unsigned long *configs, unsigned int num_configs) { unsigned int param, arg; int i, ret; if (WARN_ON(pin >= K210_NPINS)) return -EINVAL; for (i = 0; i < num_configs; i++) { param = pinconf_to_config_param(configs[i]); arg = pinconf_to_config_argument(configs[i]); ret = k210_pinconf_set_param(pctldev, pin, param, arg); if (ret) return ret; } return 0; } static void k210_pinconf_dbg_show(struct pinctrl_dev *pctldev, struct seq_file *s, unsigned int pin) { struct k210_fpioa_data *pdata = pinctrl_dev_get_drvdata(pctldev); seq_printf(s, "%#x", readl(&pdata->fpioa->pins[pin])); } static int k210_pinconf_group_set(struct pinctrl_dev *pctldev, unsigned int selector, unsigned long *configs, unsigned int num_configs) { struct k210_fpioa_data *pdata = pinctrl_dev_get_drvdata(pctldev); unsigned int param, arg; u32 bit; int i; /* Pins should be configured with pinmux, not groups*/ if (selector < K210_NPINS) return -EINVAL; /* Otherwise it's a power domain */ for (i = 0; i < num_configs; i++) { param = pinconf_to_config_param(configs[i]); if (param != PIN_CONFIG_POWER_SOURCE) return -EINVAL; arg = pinconf_to_config_argument(configs[i]); bit = BIT(selector - K210_NPINS); regmap_update_bits(pdata->sysctl_map, pdata->power_offset, bit, arg ? bit : 0); } return 0; } static void k210_pinconf_group_dbg_show(struct pinctrl_dev *pctldev, struct seq_file *s, unsigned int selector) { struct k210_fpioa_data *pdata = pinctrl_dev_get_drvdata(pctldev); int ret; u32 val; if (selector < K210_NPINS) return k210_pinconf_dbg_show(pctldev, s, selector); ret = regmap_read(pdata->sysctl_map, pdata->power_offset, &val); if (ret) { dev_err(pdata->dev, "Failed to read power reg\n"); return; } seq_printf(s, "%s: %s V", k210_group_names[selector], val & BIT(selector - K210_NPINS) ? "1.8" : "3.3"); } static const struct pinconf_ops k210_pinconf_ops = { .is_generic = true, .pin_config_set = k210_pinconf_set, .pin_config_group_set = k210_pinconf_group_set, .pin_config_dbg_show = k210_pinconf_dbg_show, .pin_config_group_dbg_show = k210_pinconf_group_dbg_show, }; static int k210_pinmux_get_function_count(struct pinctrl_dev *pctldev) { return ARRAY_SIZE(k210_pcf_infos); } static const char *k210_pinmux_get_function_name(struct pinctrl_dev *pctldev, unsigned int selector) { return k210_pcf_infos[selector].name; } static int k210_pinmux_get_function_groups(struct pinctrl_dev *pctldev, unsigned int selector, const char * const **groups, unsigned int * const num_groups) { /* Any function can be mapped to any pin */ *groups = k210_group_names; *num_groups = K210_NPINS; return 0; } static int k210_pinmux_set_mux(struct pinctrl_dev *pctldev, unsigned int function, unsigned int group) { /* Can't mux power domains */ if (group >= K210_NPINS) return -EINVAL; k210_pinmux_set_pin_function(pctldev, group, function); return 0; } static const struct pinmux_ops k210_pinmux_ops = { .get_functions_count = k210_pinmux_get_function_count, .get_function_name = k210_pinmux_get_function_name, .get_function_groups = k210_pinmux_get_function_groups, .set_mux = k210_pinmux_set_mux, .strict = true, }; static int k210_pinctrl_get_groups_count(struct pinctrl_dev *pctldev) { return K210_NGROUPS; } static const char *k210_pinctrl_get_group_name(struct pinctrl_dev *pctldev, unsigned int group) { return k210_group_names[group]; } static int k210_pinctrl_get_group_pins(struct pinctrl_dev *pctldev, unsigned int group, const unsigned int **pins, unsigned int *npins) { if (group >= K210_NPINS) { *pins = NULL; *npins = 0; return 0; } *pins = &k210_pins[group].number; *npins = 1; return 0; } static void k210_pinctrl_pin_dbg_show(struct pinctrl_dev *pctldev, struct seq_file *s, unsigned int offset) { seq_printf(s, "%s", dev_name(pctldev->dev)); } static int k210_pinctrl_dt_subnode_to_map(struct pinctrl_dev *pctldev, struct device_node *np, struct pinctrl_map **map, unsigned int *reserved_maps, unsigned int *num_maps) { struct property *prop; const __be32 *p; int ret, pinmux_groups; u32 pinmux_group; unsigned long *configs = NULL; unsigned int num_configs = 0; unsigned int reserve = 0; ret = of_property_count_strings(np, "groups"); if (!ret) return pinconf_generic_dt_subnode_to_map(pctldev, np, map, reserved_maps, num_maps, PIN_MAP_TYPE_CONFIGS_GROUP); pinmux_groups = of_property_count_u32_elems(np, "pinmux"); if (pinmux_groups <= 0) { /* Ignore this node */ return 0; } ret = pinconf_generic_parse_dt_config(np, pctldev, &configs, &num_configs); if (ret < 0) { dev_err(pctldev->dev, "%pOF: could not parse node property\n", np); return ret; } reserve = pinmux_groups * (1 + num_configs); ret = pinctrl_utils_reserve_map(pctldev, map, reserved_maps, num_maps, reserve); if (ret < 0) goto exit; of_property_for_each_u32(np, "pinmux", prop, p, pinmux_group) { const char *group_name, *func_name; u32 pin = FIELD_GET(K210_PG_PIN, pinmux_group); u32 func = FIELD_GET(K210_PG_FUNC, pinmux_group); if (pin >= K210_NPINS) { ret = -EINVAL; goto exit; } group_name = k210_group_names[pin]; func_name = k210_pcf_infos[func].name; dev_dbg(pctldev->dev, "Pinmux %s: pin %u func %s\n", np->name, pin, func_name); ret = pinctrl_utils_add_map_mux(pctldev, map, reserved_maps, num_maps, group_name, func_name); if (ret < 0) { dev_err(pctldev->dev, "%pOF add mux map failed %d\n", np, ret); goto exit; } if (num_configs) { ret = pinctrl_utils_add_map_configs(pctldev, map, reserved_maps, num_maps, group_name, configs, num_configs, PIN_MAP_TYPE_CONFIGS_PIN); if (ret < 0) { dev_err(pctldev->dev, "%pOF add configs map failed %d\n", np, ret); goto exit; } } } ret = 0; exit: kfree(configs); return ret; } static int k210_pinctrl_dt_node_to_map(struct pinctrl_dev *pctldev, struct device_node *np_config, struct pinctrl_map **map, unsigned int *num_maps) { unsigned int reserved_maps; struct device_node *np; int ret; reserved_maps = 0; *map = NULL; *num_maps = 0; ret = k210_pinctrl_dt_subnode_to_map(pctldev, np_config, map, &reserved_maps, num_maps); if (ret < 0) goto err; for_each_available_child_of_node(np_config, np) { ret = k210_pinctrl_dt_subnode_to_map(pctldev, np, map, &reserved_maps, num_maps); if (ret < 0) goto err; } return 0; err: pinctrl_utils_free_map(pctldev, *map, *num_maps); return ret; } static const struct pinctrl_ops k210_pinctrl_ops = { .get_groups_count = k210_pinctrl_get_groups_count, .get_group_name = k210_pinctrl_get_group_name, .get_group_pins = k210_pinctrl_get_group_pins, .pin_dbg_show = k210_pinctrl_pin_dbg_show, .dt_node_to_map = k210_pinctrl_dt_node_to_map, .dt_free_map = pinconf_generic_dt_free_map, }; static struct pinctrl_desc k210_pinctrl_desc = { .name = "k210-pinctrl", .pins = k210_pins, .npins = K210_NPINS, .pctlops = &k210_pinctrl_ops, .pmxops = &k210_pinmux_ops, .confops = &k210_pinconf_ops, .custom_params = k210_pinconf_custom_params, .num_custom_params = ARRAY_SIZE(k210_pinconf_custom_params), }; static void k210_fpioa_init_ties(struct k210_fpioa_data *pdata) { struct k210_fpioa __iomem *fpioa = pdata->fpioa; u32 val; int i, j; dev_dbg(pdata->dev, "Init pin ties\n"); /* Init pin functions input ties */ for (i = 0; i < ARRAY_SIZE(fpioa->tie_en); i++) { val = 0; for (j = 0; j < 32; j++) { if (k210_pcf_infos[i * 32 + j].mode_id == K210_PC_DEFAULT_IN_TIE) { dev_dbg(pdata->dev, "tie_en function %d (%s)\n", i * 32 + j, k210_pcf_infos[i * 32 + j].name); val |= BIT(j); } } /* Set value before enable */ writel(val, &fpioa->tie_val[i]); writel(val, &fpioa->tie_en[i]); } } static int k210_fpioa_probe(struct platform_device *pdev) { struct device *dev = &pdev->dev; struct device_node *np = dev->of_node; struct k210_fpioa_data *pdata; int ret; dev_info(dev, "K210 FPIOA pin controller\n"); pdata = devm_kzalloc(dev, sizeof(*pdata), GFP_KERNEL); if (!pdata) return -ENOMEM; pdata->dev = dev; platform_set_drvdata(pdev, pdata); pdata->fpioa = devm_platform_ioremap_resource(pdev, 0); if (IS_ERR(pdata->fpioa)) return PTR_ERR(pdata->fpioa); pdata->clk = devm_clk_get(dev, "ref"); if (IS_ERR(pdata->clk)) return PTR_ERR(pdata->clk); ret = clk_prepare_enable(pdata->clk); if (ret) return ret; pdata->pclk = devm_clk_get_optional(dev, "pclk"); if (!IS_ERR(pdata->pclk)) { ret = clk_prepare_enable(pdata->pclk); if (ret) goto disable_clk; } pdata->sysctl_map = syscon_regmap_lookup_by_phandle_args(np, "canaan,k210-sysctl-power", 1, &pdata->power_offset); if (IS_ERR(pdata->sysctl_map)) { ret = PTR_ERR(pdata->sysctl_map); goto disable_pclk; } k210_fpioa_init_ties(pdata); pdata->pctl = pinctrl_register(&k210_pinctrl_desc, dev, (void *)pdata); if (IS_ERR(pdata->pctl)) { ret = PTR_ERR(pdata->pctl); goto disable_pclk; } return 0; disable_pclk: clk_disable_unprepare(pdata->pclk); disable_clk: clk_disable_unprepare(pdata->clk); return ret; } static const struct of_device_id k210_fpioa_dt_ids[] = { { .compatible = "canaan,k210-fpioa" }, { /* sentinel */ }, }; static struct platform_driver k210_fpioa_driver = { .probe = k210_fpioa_probe, .driver = { .name = "k210-fpioa", .of_match_table = k210_fpioa_dt_ids, }, }; builtin_platform_driver(k210_fpioa_driver);
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