// SPDX-License-Identifier: GPL-2.0-only // Copyright (C) 2013-2017 Broadcom #include <linux/err.h> #include <linux/init.h> #include <linux/io.h> #include <linux/of.h> #include <linux/platform_device.h> #include <linux/regmap.h> #include <linux/seq_file.h> #include <linux/slab.h> #include <linux/pinctrl/pinconf-generic.h> #include <linux/pinctrl/pinconf.h> #include <linux/pinctrl/pinctrl.h> #include <linux/pinctrl/pinmux.h> #include "../core.h" #include "../pinctrl-utils.h" /* BCM281XX Pin Control Registers Definitions */ /* Function Select bits are the same for all pin control registers */ #define BCM281XX_PIN_REG_F_SEL_MASK … #define BCM281XX_PIN_REG_F_SEL_SHIFT … /* Standard pin register */ #define BCM281XX_STD_PIN_REG_DRV_STR_MASK … #define BCM281XX_STD_PIN_REG_DRV_STR_SHIFT … #define BCM281XX_STD_PIN_REG_INPUT_DIS_MASK … #define BCM281XX_STD_PIN_REG_INPUT_DIS_SHIFT … #define BCM281XX_STD_PIN_REG_SLEW_MASK … #define BCM281XX_STD_PIN_REG_SLEW_SHIFT … #define BCM281XX_STD_PIN_REG_PULL_UP_MASK … #define BCM281XX_STD_PIN_REG_PULL_UP_SHIFT … #define BCM281XX_STD_PIN_REG_PULL_DN_MASK … #define BCM281XX_STD_PIN_REG_PULL_DN_SHIFT … #define BCM281XX_STD_PIN_REG_HYST_MASK … #define BCM281XX_STD_PIN_REG_HYST_SHIFT … /* I2C pin register */ #define BCM281XX_I2C_PIN_REG_INPUT_DIS_MASK … #define BCM281XX_I2C_PIN_REG_INPUT_DIS_SHIFT … #define BCM281XX_I2C_PIN_REG_SLEW_MASK … #define BCM281XX_I2C_PIN_REG_SLEW_SHIFT … #define BCM281XX_I2C_PIN_REG_PULL_UP_STR_MASK … #define BCM281XX_I2C_PIN_REG_PULL_UP_STR_SHIFT … /* HDMI pin register */ #define BCM281XX_HDMI_PIN_REG_INPUT_DIS_MASK … #define BCM281XX_HDMI_PIN_REG_INPUT_DIS_SHIFT … #define BCM281XX_HDMI_PIN_REG_MODE_MASK … #define BCM281XX_HDMI_PIN_REG_MODE_SHIFT … /* * bcm281xx_pin_type - types of pin register */ enum bcm281xx_pin_type { … }; static enum bcm281xx_pin_type std_pin = …; static enum bcm281xx_pin_type i2c_pin = …; static enum bcm281xx_pin_type hdmi_pin = …; /* * bcm281xx_pin_function- define pin function */ struct bcm281xx_pin_function { … }; /* * bcm281xx_pinctrl_data - Broadcom-specific pinctrl data * @reg_base - base of pinctrl registers */ struct bcm281xx_pinctrl_data { … }; /* * Pin number definition. The order here must be the same as defined in the * PADCTRLREG block in the RDB. */ #define BCM281XX_PIN_ADCSYNC … #define BCM281XX_PIN_BAT_RM … #define BCM281XX_PIN_BSC1_SCL … #define BCM281XX_PIN_BSC1_SDA … #define BCM281XX_PIN_BSC2_SCL … #define BCM281XX_PIN_BSC2_SDA … #define BCM281XX_PIN_CLASSGPWR … #define BCM281XX_PIN_CLK_CX8 … #define BCM281XX_PIN_CLKOUT_0 … #define BCM281XX_PIN_CLKOUT_1 … #define BCM281XX_PIN_CLKOUT_2 … #define BCM281XX_PIN_CLKOUT_3 … #define BCM281XX_PIN_CLKREQ_IN_0 … #define BCM281XX_PIN_CLKREQ_IN_1 … #define BCM281XX_PIN_CWS_SYS_REQ1 … #define BCM281XX_PIN_CWS_SYS_REQ2 … #define BCM281XX_PIN_CWS_SYS_REQ3 … #define BCM281XX_PIN_DIGMIC1_CLK … #define BCM281XX_PIN_DIGMIC1_DQ … #define BCM281XX_PIN_DIGMIC2_CLK … #define BCM281XX_PIN_DIGMIC2_DQ … #define BCM281XX_PIN_GPEN13 … #define BCM281XX_PIN_GPEN14 … #define BCM281XX_PIN_GPEN15 … #define BCM281XX_PIN_GPIO00 … #define BCM281XX_PIN_GPIO01 … #define BCM281XX_PIN_GPIO02 … #define BCM281XX_PIN_GPIO03 … #define BCM281XX_PIN_GPIO04 … #define BCM281XX_PIN_GPIO05 … #define BCM281XX_PIN_GPIO06 … #define BCM281XX_PIN_GPIO07 … #define BCM281XX_PIN_GPIO08 … #define BCM281XX_PIN_GPIO09 … #define BCM281XX_PIN_GPIO10 … #define BCM281XX_PIN_GPIO11 … #define BCM281XX_PIN_GPIO12 … #define BCM281XX_PIN_GPIO13 … #define BCM281XX_PIN_GPIO14 … #define BCM281XX_PIN_GPS_PABLANK … #define BCM281XX_PIN_GPS_TMARK … #define BCM281XX_PIN_HDMI_SCL … #define BCM281XX_PIN_HDMI_SDA … #define BCM281XX_PIN_IC_DM … #define BCM281XX_PIN_IC_DP … #define BCM281XX_PIN_KP_COL_IP_0 … #define BCM281XX_PIN_KP_COL_IP_1 … #define BCM281XX_PIN_KP_COL_IP_2 … #define BCM281XX_PIN_KP_COL_IP_3 … #define BCM281XX_PIN_KP_ROW_OP_0 … #define BCM281XX_PIN_KP_ROW_OP_1 … #define BCM281XX_PIN_KP_ROW_OP_2 … #define BCM281XX_PIN_KP_ROW_OP_3 … #define BCM281XX_PIN_LCD_B_0 … #define BCM281XX_PIN_LCD_B_1 … #define BCM281XX_PIN_LCD_B_2 … #define BCM281XX_PIN_LCD_B_3 … #define BCM281XX_PIN_LCD_B_4 … #define BCM281XX_PIN_LCD_B_5 … #define BCM281XX_PIN_LCD_B_6 … #define BCM281XX_PIN_LCD_B_7 … #define BCM281XX_PIN_LCD_G_0 … #define BCM281XX_PIN_LCD_G_1 … #define BCM281XX_PIN_LCD_G_2 … #define BCM281XX_PIN_LCD_G_3 … #define BCM281XX_PIN_LCD_G_4 … #define BCM281XX_PIN_LCD_G_5 … #define BCM281XX_PIN_LCD_G_6 … #define BCM281XX_PIN_LCD_G_7 … #define BCM281XX_PIN_LCD_HSYNC … #define BCM281XX_PIN_LCD_OE … #define BCM281XX_PIN_LCD_PCLK … #define BCM281XX_PIN_LCD_R_0 … #define BCM281XX_PIN_LCD_R_1 … #define BCM281XX_PIN_LCD_R_2 … #define BCM281XX_PIN_LCD_R_3 … #define BCM281XX_PIN_LCD_R_4 … #define BCM281XX_PIN_LCD_R_5 … #define BCM281XX_PIN_LCD_R_6 … #define BCM281XX_PIN_LCD_R_7 … #define BCM281XX_PIN_LCD_VSYNC … #define BCM281XX_PIN_MDMGPIO0 … #define BCM281XX_PIN_MDMGPIO1 … #define BCM281XX_PIN_MDMGPIO2 … #define BCM281XX_PIN_MDMGPIO3 … #define BCM281XX_PIN_MDMGPIO4 … #define BCM281XX_PIN_MDMGPIO5 … #define BCM281XX_PIN_MDMGPIO6 … #define BCM281XX_PIN_MDMGPIO7 … #define BCM281XX_PIN_MDMGPIO8 … #define BCM281XX_PIN_MPHI_DATA_0 … #define BCM281XX_PIN_MPHI_DATA_1 … #define BCM281XX_PIN_MPHI_DATA_2 … #define BCM281XX_PIN_MPHI_DATA_3 … #define BCM281XX_PIN_MPHI_DATA_4 … #define BCM281XX_PIN_MPHI_DATA_5 … #define BCM281XX_PIN_MPHI_DATA_6 … #define BCM281XX_PIN_MPHI_DATA_7 … #define BCM281XX_PIN_MPHI_DATA_8 … #define BCM281XX_PIN_MPHI_DATA_9 … #define BCM281XX_PIN_MPHI_DATA_10 … #define BCM281XX_PIN_MPHI_DATA_11 … #define BCM281XX_PIN_MPHI_DATA_12 … #define BCM281XX_PIN_MPHI_DATA_13 … #define BCM281XX_PIN_MPHI_DATA_14 … #define BCM281XX_PIN_MPHI_DATA_15 … #define BCM281XX_PIN_MPHI_HA0 … #define BCM281XX_PIN_MPHI_HAT0 … #define BCM281XX_PIN_MPHI_HAT1 … #define BCM281XX_PIN_MPHI_HCE0_N … #define BCM281XX_PIN_MPHI_HCE1_N … #define BCM281XX_PIN_MPHI_HRD_N … #define BCM281XX_PIN_MPHI_HWR_N … #define BCM281XX_PIN_MPHI_RUN0 … #define BCM281XX_PIN_MPHI_RUN1 … #define BCM281XX_PIN_MTX_SCAN_CLK … #define BCM281XX_PIN_MTX_SCAN_DATA … #define BCM281XX_PIN_NAND_AD_0 … #define BCM281XX_PIN_NAND_AD_1 … #define BCM281XX_PIN_NAND_AD_2 … #define BCM281XX_PIN_NAND_AD_3 … #define BCM281XX_PIN_NAND_AD_4 … #define BCM281XX_PIN_NAND_AD_5 … #define BCM281XX_PIN_NAND_AD_6 … #define BCM281XX_PIN_NAND_AD_7 … #define BCM281XX_PIN_NAND_ALE … #define BCM281XX_PIN_NAND_CEN_0 … #define BCM281XX_PIN_NAND_CEN_1 … #define BCM281XX_PIN_NAND_CLE … #define BCM281XX_PIN_NAND_OEN … #define BCM281XX_PIN_NAND_RDY_0 … #define BCM281XX_PIN_NAND_RDY_1 … #define BCM281XX_PIN_NAND_WEN … #define BCM281XX_PIN_NAND_WP … #define BCM281XX_PIN_PC1 … #define BCM281XX_PIN_PC2 … #define BCM281XX_PIN_PMU_INT … #define BCM281XX_PIN_PMU_SCL … #define BCM281XX_PIN_PMU_SDA … #define BCM281XX_PIN_RFST2G_MTSLOTEN3G … #define BCM281XX_PIN_RGMII_0_RX_CTL … #define BCM281XX_PIN_RGMII_0_RXC … #define BCM281XX_PIN_RGMII_0_RXD_0 … #define BCM281XX_PIN_RGMII_0_RXD_1 … #define BCM281XX_PIN_RGMII_0_RXD_2 … #define BCM281XX_PIN_RGMII_0_RXD_3 … #define BCM281XX_PIN_RGMII_0_TX_CTL … #define BCM281XX_PIN_RGMII_0_TXC … #define BCM281XX_PIN_RGMII_0_TXD_0 … #define BCM281XX_PIN_RGMII_0_TXD_1 … #define BCM281XX_PIN_RGMII_0_TXD_2 … #define BCM281XX_PIN_RGMII_0_TXD_3 … #define BCM281XX_PIN_RGMII_1_RX_CTL … #define BCM281XX_PIN_RGMII_1_RXC … #define BCM281XX_PIN_RGMII_1_RXD_0 … #define BCM281XX_PIN_RGMII_1_RXD_1 … #define BCM281XX_PIN_RGMII_1_RXD_2 … #define BCM281XX_PIN_RGMII_1_RXD_3 … #define BCM281XX_PIN_RGMII_1_TX_CTL … #define BCM281XX_PIN_RGMII_1_TXC … #define BCM281XX_PIN_RGMII_1_TXD_0 … #define BCM281XX_PIN_RGMII_1_TXD_1 … #define BCM281XX_PIN_RGMII_1_TXD_2 … #define BCM281XX_PIN_RGMII_1_TXD_3 … #define BCM281XX_PIN_RGMII_GPIO_0 … #define BCM281XX_PIN_RGMII_GPIO_1 … #define BCM281XX_PIN_RGMII_GPIO_2 … #define BCM281XX_PIN_RGMII_GPIO_3 … #define BCM281XX_PIN_RTXDATA2G_TXDATA3G1 … #define BCM281XX_PIN_RTXEN2G_TXDATA3G2 … #define BCM281XX_PIN_RXDATA3G0 … #define BCM281XX_PIN_RXDATA3G1 … #define BCM281XX_PIN_RXDATA3G2 … #define BCM281XX_PIN_SDIO1_CLK … #define BCM281XX_PIN_SDIO1_CMD … #define BCM281XX_PIN_SDIO1_DATA_0 … #define BCM281XX_PIN_SDIO1_DATA_1 … #define BCM281XX_PIN_SDIO1_DATA_2 … #define BCM281XX_PIN_SDIO1_DATA_3 … #define BCM281XX_PIN_SDIO4_CLK … #define BCM281XX_PIN_SDIO4_CMD … #define BCM281XX_PIN_SDIO4_DATA_0 … #define BCM281XX_PIN_SDIO4_DATA_1 … #define BCM281XX_PIN_SDIO4_DATA_2 … #define BCM281XX_PIN_SDIO4_DATA_3 … #define BCM281XX_PIN_SIM_CLK … #define BCM281XX_PIN_SIM_DATA … #define BCM281XX_PIN_SIM_DET … #define BCM281XX_PIN_SIM_RESETN … #define BCM281XX_PIN_SIM2_CLK … #define BCM281XX_PIN_SIM2_DATA … #define BCM281XX_PIN_SIM2_DET … #define BCM281XX_PIN_SIM2_RESETN … #define BCM281XX_PIN_SRI_C … #define BCM281XX_PIN_SRI_D … #define BCM281XX_PIN_SRI_E … #define BCM281XX_PIN_SSP_EXTCLK … #define BCM281XX_PIN_SSP0_CLK … #define BCM281XX_PIN_SSP0_FS … #define BCM281XX_PIN_SSP0_RXD … #define BCM281XX_PIN_SSP0_TXD … #define BCM281XX_PIN_SSP2_CLK … #define BCM281XX_PIN_SSP2_FS_0 … #define BCM281XX_PIN_SSP2_FS_1 … #define BCM281XX_PIN_SSP2_FS_2 … #define BCM281XX_PIN_SSP2_FS_3 … #define BCM281XX_PIN_SSP2_RXD_0 … #define BCM281XX_PIN_SSP2_RXD_1 … #define BCM281XX_PIN_SSP2_TXD_0 … #define BCM281XX_PIN_SSP2_TXD_1 … #define BCM281XX_PIN_SSP3_CLK … #define BCM281XX_PIN_SSP3_FS … #define BCM281XX_PIN_SSP3_RXD … #define BCM281XX_PIN_SSP3_TXD … #define BCM281XX_PIN_SSP4_CLK … #define BCM281XX_PIN_SSP4_FS … #define BCM281XX_PIN_SSP4_RXD … #define BCM281XX_PIN_SSP4_TXD … #define BCM281XX_PIN_SSP5_CLK … #define BCM281XX_PIN_SSP5_FS … #define BCM281XX_PIN_SSP5_RXD … #define BCM281XX_PIN_SSP5_TXD … #define BCM281XX_PIN_SSP6_CLK … #define BCM281XX_PIN_SSP6_FS … #define BCM281XX_PIN_SSP6_RXD … #define BCM281XX_PIN_SSP6_TXD … #define BCM281XX_PIN_STAT_1 … #define BCM281XX_PIN_STAT_2 … #define BCM281XX_PIN_SYSCLKEN … #define BCM281XX_PIN_TRACECLK … #define BCM281XX_PIN_TRACEDT00 … #define BCM281XX_PIN_TRACEDT01 … #define BCM281XX_PIN_TRACEDT02 … #define BCM281XX_PIN_TRACEDT03 … #define BCM281XX_PIN_TRACEDT04 … #define BCM281XX_PIN_TRACEDT05 … #define BCM281XX_PIN_TRACEDT06 … #define BCM281XX_PIN_TRACEDT07 … #define BCM281XX_PIN_TRACEDT08 … #define BCM281XX_PIN_TRACEDT09 … #define BCM281XX_PIN_TRACEDT10 … #define BCM281XX_PIN_TRACEDT11 … #define BCM281XX_PIN_TRACEDT12 … #define BCM281XX_PIN_TRACEDT13 … #define BCM281XX_PIN_TRACEDT14 … #define BCM281XX_PIN_TRACEDT15 … #define BCM281XX_PIN_TXDATA3G0 … #define BCM281XX_PIN_TXPWRIND … #define BCM281XX_PIN_UARTB1_UCTS … #define BCM281XX_PIN_UARTB1_URTS … #define BCM281XX_PIN_UARTB1_URXD … #define BCM281XX_PIN_UARTB1_UTXD … #define BCM281XX_PIN_UARTB2_URXD … #define BCM281XX_PIN_UARTB2_UTXD … #define BCM281XX_PIN_UARTB3_UCTS … #define BCM281XX_PIN_UARTB3_URTS … #define BCM281XX_PIN_UARTB3_URXD … #define BCM281XX_PIN_UARTB3_UTXD … #define BCM281XX_PIN_UARTB4_UCTS … #define BCM281XX_PIN_UARTB4_URTS … #define BCM281XX_PIN_UARTB4_URXD … #define BCM281XX_PIN_UARTB4_UTXD … #define BCM281XX_PIN_VC_CAM1_SCL … #define BCM281XX_PIN_VC_CAM1_SDA … #define BCM281XX_PIN_VC_CAM2_SCL … #define BCM281XX_PIN_VC_CAM2_SDA … #define BCM281XX_PIN_VC_CAM3_SCL … #define BCM281XX_PIN_VC_CAM3_SDA … #define BCM281XX_PIN_DESC(a, b, c) … /* * Pin description definition. The order here must be the same as defined in * the PADCTRLREG block in the RDB, since the pin number is used as an index * into this array. */ static const struct pinctrl_pin_desc bcm281xx_pinctrl_pins[] = …; static const char * const bcm281xx_alt_groups[] = …; /* Every pin can implement all ALT1-ALT4 functions */ #define BCM281XX_PIN_FUNCTION(fcn_name) … static const struct bcm281xx_pin_function bcm281xx_functions[] = …; static struct bcm281xx_pinctrl_data bcm281xx_pinctrl = …; static inline enum bcm281xx_pin_type pin_type_get(struct pinctrl_dev *pctldev, unsigned pin) { … } #define BCM281XX_PIN_SHIFT(type, param) … #define BCM281XX_PIN_MASK(type, param) … /* * This helper function is used to build up the value and mask used to write to * a pin register, but does not actually write to the register. */ static inline void bcm281xx_pin_update(u32 *reg_val, u32 *reg_mask, u32 param_val, u32 param_shift, u32 param_mask) { … } static const struct regmap_config bcm281xx_pinctrl_regmap_config = …; static int bcm281xx_pinctrl_get_groups_count(struct pinctrl_dev *pctldev) { … } static const char *bcm281xx_pinctrl_get_group_name(struct pinctrl_dev *pctldev, unsigned group) { … } static int bcm281xx_pinctrl_get_group_pins(struct pinctrl_dev *pctldev, unsigned group, const unsigned **pins, unsigned *num_pins) { … } static void bcm281xx_pinctrl_pin_dbg_show(struct pinctrl_dev *pctldev, struct seq_file *s, unsigned offset) { … } static const struct pinctrl_ops bcm281xx_pinctrl_ops = …; static int bcm281xx_pinctrl_get_fcns_count(struct pinctrl_dev *pctldev) { … } static const char *bcm281xx_pinctrl_get_fcn_name(struct pinctrl_dev *pctldev, unsigned function) { … } static int bcm281xx_pinctrl_get_fcn_groups(struct pinctrl_dev *pctldev, unsigned function, const char * const **groups, unsigned * const num_groups) { … } static int bcm281xx_pinmux_set(struct pinctrl_dev *pctldev, unsigned function, unsigned group) { … } static const struct pinmux_ops bcm281xx_pinctrl_pinmux_ops = …; static int bcm281xx_pinctrl_pin_config_get(struct pinctrl_dev *pctldev, unsigned pin, unsigned long *config) { … } /* Goes through the configs and update register val/mask */ static int bcm281xx_std_pin_update(struct pinctrl_dev *pctldev, unsigned pin, unsigned long *configs, unsigned num_configs, u32 *val, u32 *mask) { … } /* * The pull-up strength for an I2C pin is represented by bits 4-6 in the * register with the following mapping: * 0b000: No pull-up * 0b001: 1200 Ohm * 0b010: 1800 Ohm * 0b011: 720 Ohm * 0b100: 2700 Ohm * 0b101: 831 Ohm * 0b110: 1080 Ohm * 0b111: 568 Ohm * This array maps pull-up strength in Ohms to register values (1+index). */ static const u16 bcm281xx_pullup_map[] = …; /* Goes through the configs and update register val/mask */ static int bcm281xx_i2c_pin_update(struct pinctrl_dev *pctldev, unsigned pin, unsigned long *configs, unsigned num_configs, u32 *val, u32 *mask) { … } /* Goes through the configs and update register val/mask */ static int bcm281xx_hdmi_pin_update(struct pinctrl_dev *pctldev, unsigned pin, unsigned long *configs, unsigned num_configs, u32 *val, u32 *mask) { … } static int bcm281xx_pinctrl_pin_config_set(struct pinctrl_dev *pctldev, unsigned pin, unsigned long *configs, unsigned num_configs) { … } static const struct pinconf_ops bcm281xx_pinctrl_pinconf_ops = …; static struct pinctrl_desc bcm281xx_pinctrl_desc = …; static int __init bcm281xx_pinctrl_probe(struct platform_device *pdev) { … } static const struct of_device_id bcm281xx_pinctrl_of_match[] = …; static struct platform_driver bcm281xx_pinctrl_driver = …; builtin_platform_driver_probe(…);
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