// SPDX-License-Identifier: GPL-2.0 /* * Pinctrl for Cirrus Logic Madera codecs * * Copyright (C) 2016-2018 Cirrus Logic * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by the * Free Software Foundation; version 2. */ #include #include #include #include #include #include #include #include #include #include #include #include "../pinctrl-utils.h" #include "pinctrl-madera.h" /* * Use pin GPIO names for consistency * NOTE: IDs are zero-indexed for coding convenience */ static const struct pinctrl_pin_desc madera_pins[] = { PINCTRL_PIN(0, "gpio1"), PINCTRL_PIN(1, "gpio2"), PINCTRL_PIN(2, "gpio3"), PINCTRL_PIN(3, "gpio4"), PINCTRL_PIN(4, "gpio5"), PINCTRL_PIN(5, "gpio6"), PINCTRL_PIN(6, "gpio7"), PINCTRL_PIN(7, "gpio8"), PINCTRL_PIN(8, "gpio9"), PINCTRL_PIN(9, "gpio10"), PINCTRL_PIN(10, "gpio11"), PINCTRL_PIN(11, "gpio12"), PINCTRL_PIN(12, "gpio13"), PINCTRL_PIN(13, "gpio14"), PINCTRL_PIN(14, "gpio15"), PINCTRL_PIN(15, "gpio16"), PINCTRL_PIN(16, "gpio17"), PINCTRL_PIN(17, "gpio18"), PINCTRL_PIN(18, "gpio19"), PINCTRL_PIN(19, "gpio20"), PINCTRL_PIN(20, "gpio21"), PINCTRL_PIN(21, "gpio22"), PINCTRL_PIN(22, "gpio23"), PINCTRL_PIN(23, "gpio24"), PINCTRL_PIN(24, "gpio25"), PINCTRL_PIN(25, "gpio26"), PINCTRL_PIN(26, "gpio27"), PINCTRL_PIN(27, "gpio28"), PINCTRL_PIN(28, "gpio29"), PINCTRL_PIN(29, "gpio30"), PINCTRL_PIN(30, "gpio31"), PINCTRL_PIN(31, "gpio32"), PINCTRL_PIN(32, "gpio33"), PINCTRL_PIN(33, "gpio34"), PINCTRL_PIN(34, "gpio35"), PINCTRL_PIN(35, "gpio36"), PINCTRL_PIN(36, "gpio37"), PINCTRL_PIN(37, "gpio38"), PINCTRL_PIN(38, "gpio39"), PINCTRL_PIN(39, "gpio40"), }; /* * All single-pin functions can be mapped to any GPIO, however pinmux applies * functions to pin groups and only those groups declared as supporting that * function. To make this work we must put each pin in its own dummy group so * that the functions can be described as applying to all pins. * Since these do not correspond to anything in the actual hardware - they are * merely an adaptation to pinctrl's view of the world - we use the same name * as the pin to avoid confusion when comparing with datasheet instructions */ static const char * const madera_pin_single_group_names[] = { "gpio1", "gpio2", "gpio3", "gpio4", "gpio5", "gpio6", "gpio7", "gpio8", "gpio9", "gpio10", "gpio11", "gpio12", "gpio13", "gpio14", "gpio15", "gpio16", "gpio17", "gpio18", "gpio19", "gpio20", "gpio21", "gpio22", "gpio23", "gpio24", "gpio25", "gpio26", "gpio27", "gpio28", "gpio29", "gpio30", "gpio31", "gpio32", "gpio33", "gpio34", "gpio35", "gpio36", "gpio37", "gpio38", "gpio39", "gpio40", }; /* set of pin numbers for single-pin groups, zero-indexed */ static const unsigned int madera_pin_single_group_pins[] = { 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, }; static const char * const madera_aif1_group_names[] = { "aif1" }; static const char * const madera_aif2_group_names[] = { "aif2" }; static const char * const madera_aif3_group_names[] = { "aif3" }; static const char * const madera_aif4_group_names[] = { "aif4" }; static const char * const madera_mif1_group_names[] = { "mif1" }; static const char * const madera_mif2_group_names[] = { "mif2" }; static const char * const madera_mif3_group_names[] = { "mif3" }; static const char * const madera_dmic3_group_names[] = { "dmic3" }; static const char * const madera_dmic4_group_names[] = { "dmic4" }; static const char * const madera_dmic5_group_names[] = { "dmic5" }; static const char * const madera_dmic6_group_names[] = { "dmic6" }; static const char * const madera_spk1_group_names[] = { "pdmspk1" }; static const char * const madera_spk2_group_names[] = { "pdmspk2" }; /* * alt-functions always apply to a single pin group, other functions always * apply to all pins */ static const struct { const char *name; const char * const *group_names; u32 func; } madera_mux_funcs[] = { { .name = "aif1", .group_names = madera_aif1_group_names, .func = 0x000 }, { .name = "aif2", .group_names = madera_aif2_group_names, .func = 0x000 }, { .name = "aif3", .group_names = madera_aif3_group_names, .func = 0x000 }, { .name = "aif4", .group_names = madera_aif4_group_names, .func = 0x000 }, { .name = "mif1", .group_names = madera_mif1_group_names, .func = 0x000 }, { .name = "mif2", .group_names = madera_mif2_group_names, .func = 0x000 }, { .name = "mif3", .group_names = madera_mif3_group_names, .func = 0x000 }, { .name = "dmic3", .group_names = madera_dmic3_group_names, .func = 0x000 }, { .name = "dmic4", .group_names = madera_dmic4_group_names, .func = 0x000 }, { .name = "dmic5", .group_names = madera_dmic5_group_names, .func = 0x000 }, { .name = "dmic6", .group_names = madera_dmic6_group_names, .func = 0x000 }, { .name = "pdmspk1", .group_names = madera_spk1_group_names, .func = 0x000 }, { .name = "pdmspk2", .group_names = madera_spk2_group_names, .func = 0x000 }, { .name = "io", .group_names = madera_pin_single_group_names, .func = 0x001 }, { .name = "dsp-gpio", .group_names = madera_pin_single_group_names, .func = 0x002 }, { .name = "irq1", .group_names = madera_pin_single_group_names, .func = 0x003 }, { .name = "irq2", .group_names = madera_pin_single_group_names, .func = 0x004 }, { .name = "fll1-clk", .group_names = madera_pin_single_group_names, .func = 0x010 }, { .name = "fll2-clk", .group_names = madera_pin_single_group_names, .func = 0x011 }, { .name = "fll3-clk", .group_names = madera_pin_single_group_names, .func = 0x012 }, { .name = "fllao-clk", .group_names = madera_pin_single_group_names, .func = 0x013 }, { .name = "fll1-lock", .group_names = madera_pin_single_group_names, .func = 0x018 }, { .name = "fll2-lock", .group_names = madera_pin_single_group_names, .func = 0x019 }, { .name = "fll3-lock", .group_names = madera_pin_single_group_names, .func = 0x01a }, { .name = "fllao-lock", .group_names = madera_pin_single_group_names, .func = 0x01b }, { .name = "opclk", .group_names = madera_pin_single_group_names, .func = 0x040 }, { .name = "opclk-async", .group_names = madera_pin_single_group_names, .func = 0x041 }, { .name = "pwm1", .group_names = madera_pin_single_group_names, .func = 0x048 }, { .name = "pwm2", .group_names = madera_pin_single_group_names, .func = 0x049 }, { .name = "spdif", .group_names = madera_pin_single_group_names, .func = 0x04c }, { .name = "asrc1-in1-lock", .group_names = madera_pin_single_group_names, .func = 0x088 }, { .name = "asrc1-in2-lock", .group_names = madera_pin_single_group_names, .func = 0x089 }, { .name = "asrc2-in1-lock", .group_names = madera_pin_single_group_names, .func = 0x08a }, { .name = "asrc2-in2-lock", .group_names = madera_pin_single_group_names, .func = 0x08b }, { .name = "spkl-short-circuit", .group_names = madera_pin_single_group_names, .func = 0x0b6 }, { .name = "spkr-short-circuit", .group_names = madera_pin_single_group_names, .func = 0x0b7 }, { .name = "spk-shutdown", .group_names = madera_pin_single_group_names, .func = 0x0e0 }, { .name = "spk-overheat-shutdown", .group_names = madera_pin_single_group_names, .func = 0x0e1 }, { .name = "spk-overheat-warn", .group_names = madera_pin_single_group_names, .func = 0x0e2 }, { .name = "timer1-sts", .group_names = madera_pin_single_group_names, .func = 0x140 }, { .name = "timer2-sts", .group_names = madera_pin_single_group_names, .func = 0x141 }, { .name = "timer3-sts", .group_names = madera_pin_single_group_names, .func = 0x142 }, { .name = "timer4-sts", .group_names = madera_pin_single_group_names, .func = 0x143 }, { .name = "timer5-sts", .group_names = madera_pin_single_group_names, .func = 0x144 }, { .name = "timer6-sts", .group_names = madera_pin_single_group_names, .func = 0x145 }, { .name = "timer7-sts", .group_names = madera_pin_single_group_names, .func = 0x146 }, { .name = "timer8-sts", .group_names = madera_pin_single_group_names, .func = 0x147 }, { .name = "log1-fifo-ne", .group_names = madera_pin_single_group_names, .func = 0x150 }, { .name = "log2-fifo-ne", .group_names = madera_pin_single_group_names, .func = 0x151 }, { .name = "log3-fifo-ne", .group_names = madera_pin_single_group_names, .func = 0x152 }, { .name = "log4-fifo-ne", .group_names = madera_pin_single_group_names, .func = 0x153 }, { .name = "log5-fifo-ne", .group_names = madera_pin_single_group_names, .func = 0x154 }, { .name = "log6-fifo-ne", .group_names = madera_pin_single_group_names, .func = 0x155 }, { .name = "log7-fifo-ne", .group_names = madera_pin_single_group_names, .func = 0x156 }, { .name = "log8-fifo-ne", .group_names = madera_pin_single_group_names, .func = 0x157 }, }; static u16 madera_pin_make_drv_str(struct madera_pin_private *priv, unsigned int milliamps) { switch (milliamps) { case 4: return 0; case 8: return 2 << MADERA_GP1_DRV_STR_SHIFT; default: break; } dev_warn(priv->dev, "%u mA not a valid drive strength", milliamps); return 0; } static unsigned int madera_pin_unmake_drv_str(struct madera_pin_private *priv, u16 regval) { regval = (regval & MADERA_GP1_DRV_STR_MASK) >> MADERA_GP1_DRV_STR_SHIFT; switch (regval) { case 0: return 4; case 2: return 8; default: return 0; } } static int madera_get_groups_count(struct pinctrl_dev *pctldev) { struct madera_pin_private *priv = pinctrl_dev_get_drvdata(pctldev); /* Number of alt function groups plus number of single-pin groups */ return priv->chip->n_pin_groups + priv->chip->n_pins; } static const char *madera_get_group_name(struct pinctrl_dev *pctldev, unsigned int selector) { struct madera_pin_private *priv = pinctrl_dev_get_drvdata(pctldev); if (selector < priv->chip->n_pin_groups) return priv->chip->pin_groups[selector].name; selector -= priv->chip->n_pin_groups; return madera_pin_single_group_names[selector]; } static int madera_get_group_pins(struct pinctrl_dev *pctldev, unsigned int selector, const unsigned int **pins, unsigned int *num_pins) { struct madera_pin_private *priv = pinctrl_dev_get_drvdata(pctldev); if (selector < priv->chip->n_pin_groups) { *pins = priv->chip->pin_groups[selector].pins; *num_pins = priv->chip->pin_groups[selector].n_pins; } else { /* return the dummy group for a single pin */ selector -= priv->chip->n_pin_groups; *pins = &madera_pin_single_group_pins[selector]; *num_pins = 1; } return 0; } static void madera_pin_dbg_show_fn(struct madera_pin_private *priv, struct seq_file *s, unsigned int pin, unsigned int fn) { const struct madera_pin_chip *chip = priv->chip; int i, g_pin; if (fn != 0) { for (i = 0; i < ARRAY_SIZE(madera_mux_funcs); ++i) { if (madera_mux_funcs[i].func == fn) { seq_printf(s, " FN=%s", madera_mux_funcs[i].name); return; } } return; /* ignore unknown function values */ } /* alt function */ for (i = 0; i < chip->n_pin_groups; ++i) { for (g_pin = 0; g_pin < chip->pin_groups[i].n_pins; ++g_pin) { if (chip->pin_groups[i].pins[g_pin] == pin) { seq_printf(s, " FN=%s", chip->pin_groups[i].name); return; } } } } static void __maybe_unused madera_pin_dbg_show(struct pinctrl_dev *pctldev, struct seq_file *s, unsigned int pin) { struct madera_pin_private *priv = pinctrl_dev_get_drvdata(pctldev); unsigned int conf[2]; unsigned int reg = MADERA_GPIO1_CTRL_1 + (2 * pin); unsigned int fn; int ret; ret = regmap_read(priv->madera->regmap, reg, &conf[0]); if (ret) return; ret = regmap_read(priv->madera->regmap, reg + 1, &conf[1]); if (ret) return; seq_printf(s, "%04x:%04x", conf[0], conf[1]); fn = (conf[0] & MADERA_GP1_FN_MASK) >> MADERA_GP1_FN_SHIFT; madera_pin_dbg_show_fn(priv, s, pin, fn); /* State of direction bit is only relevant if function==1 */ if (fn == 1) { if (conf[1] & MADERA_GP1_DIR_MASK) seq_puts(s, " IN"); else seq_puts(s, " OUT"); } if (conf[1] & MADERA_GP1_PU_MASK) seq_puts(s, " PU"); if (conf[1] & MADERA_GP1_PD_MASK) seq_puts(s, " PD"); if (conf[0] & MADERA_GP1_DB_MASK) seq_puts(s, " DB"); if (conf[0] & MADERA_GP1_OP_CFG_MASK) seq_puts(s, " OD"); else seq_puts(s, " CMOS"); seq_printf(s, " DRV=%umA", madera_pin_unmake_drv_str(priv, conf[1])); if (conf[0] & MADERA_GP1_IP_CFG_MASK) seq_puts(s, "SCHMITT"); } static const struct pinctrl_ops madera_pin_group_ops = { .get_groups_count = madera_get_groups_count, .get_group_name = madera_get_group_name, .get_group_pins = madera_get_group_pins, #if IS_ENABLED(CONFIG_OF) .dt_node_to_map = pinconf_generic_dt_node_to_map_all, .dt_free_map = pinctrl_utils_free_map, #endif #if IS_ENABLED(CONFIG_DEBUG_FS) .pin_dbg_show = madera_pin_dbg_show, #endif }; static int madera_mux_get_funcs_count(struct pinctrl_dev *pctldev) { return ARRAY_SIZE(madera_mux_funcs); } static const char *madera_mux_get_func_name(struct pinctrl_dev *pctldev, unsigned int selector) { return madera_mux_funcs[selector].name; } static int madera_mux_get_groups(struct pinctrl_dev *pctldev, unsigned int selector, const char * const **groups, unsigned int * const num_groups) { struct madera_pin_private *priv = pinctrl_dev_get_drvdata(pctldev); *groups = madera_mux_funcs[selector].group_names; if (madera_mux_funcs[selector].func == 0) { /* alt func always maps to a single group */ *num_groups = 1; } else { /* other funcs map to all available gpio pins */ *num_groups = priv->chip->n_pins; } return 0; } static int madera_mux_set_mux(struct pinctrl_dev *pctldev, unsigned int selector, unsigned int group) { struct madera_pin_private *priv = pinctrl_dev_get_drvdata(pctldev); struct madera *madera = priv->madera; const struct madera_pin_groups *pin_group = priv->chip->pin_groups; unsigned int n_chip_groups = priv->chip->n_pin_groups; const char *func_name = madera_mux_funcs[selector].name; unsigned int reg; int i, ret; dev_dbg(priv->dev, "%s selecting %u (%s) for group %u (%s)\n", __func__, selector, func_name, group, madera_get_group_name(pctldev, group)); if (madera_mux_funcs[selector].func == 0) { /* alt func pin assignments are codec-specific */ for (i = 0; i < n_chip_groups; ++i) { if (strcmp(func_name, pin_group->name) == 0) break; ++pin_group; } if (i == n_chip_groups) return -EINVAL; for (i = 0; i < pin_group->n_pins; ++i) { reg = MADERA_GPIO1_CTRL_1 + (2 * pin_group->pins[i]); dev_dbg(priv->dev, "%s setting 0x%x func bits to 0\n", __func__, reg); ret = regmap_update_bits(madera->regmap, reg, MADERA_GP1_FN_MASK, 0); if (ret) break; } } else { /* * for other funcs the group will be the gpio number and will * be offset by the number of chip-specific functions at the * start of the group list */ group -= n_chip_groups; reg = MADERA_GPIO1_CTRL_1 + (2 * group); dev_dbg(priv->dev, "%s setting 0x%x func bits to 0x%x\n", __func__, reg, madera_mux_funcs[selector].func); ret = regmap_update_bits(madera->regmap, reg, MADERA_GP1_FN_MASK, madera_mux_funcs[selector].func); } if (ret) dev_err(priv->dev, "Failed to write to 0x%x (%d)\n", reg, ret); return ret; } static int madera_gpio_set_direction(struct pinctrl_dev *pctldev, struct pinctrl_gpio_range *range, unsigned int offset, bool input) { struct madera_pin_private *priv = pinctrl_dev_get_drvdata(pctldev); struct madera *madera = priv->madera; unsigned int reg = MADERA_GPIO1_CTRL_2 + (2 * offset); unsigned int val; int ret; if (input) val = MADERA_GP1_DIR; else val = 0; ret = regmap_update_bits(madera->regmap, reg, MADERA_GP1_DIR_MASK, val); if (ret) dev_err(priv->dev, "Failed to write to 0x%x (%d)\n", reg, ret); return ret; } static int madera_gpio_request_enable(struct pinctrl_dev *pctldev, struct pinctrl_gpio_range *range, unsigned int offset) { struct madera_pin_private *priv = pinctrl_dev_get_drvdata(pctldev); struct madera *madera = priv->madera; unsigned int reg = MADERA_GPIO1_CTRL_1 + (2 * offset); int ret; /* put the pin into GPIO mode */ ret = regmap_update_bits(madera->regmap, reg, MADERA_GP1_FN_MASK, 1); if (ret) dev_err(priv->dev, "Failed to write to 0x%x (%d)\n", reg, ret); return ret; } static void madera_gpio_disable_free(struct pinctrl_dev *pctldev, struct pinctrl_gpio_range *range, unsigned int offset) { struct madera_pin_private *priv = pinctrl_dev_get_drvdata(pctldev); struct madera *madera = priv->madera; unsigned int reg = MADERA_GPIO1_CTRL_1 + (2 * offset); int ret; /* disable GPIO by setting to GPIO IN */ madera_gpio_set_direction(pctldev, range, offset, true); ret = regmap_update_bits(madera->regmap, reg, MADERA_GP1_FN_MASK, 1); if (ret) dev_err(priv->dev, "Failed to write to 0x%x (%d)\n", reg, ret); } static const struct pinmux_ops madera_pin_mux_ops = { .get_functions_count = madera_mux_get_funcs_count, .get_function_name = madera_mux_get_func_name, .get_function_groups = madera_mux_get_groups, .set_mux = madera_mux_set_mux, .gpio_request_enable = madera_gpio_request_enable, .gpio_disable_free = madera_gpio_disable_free, .gpio_set_direction = madera_gpio_set_direction, .strict = true, /* GPIO and other functions are exclusive */ }; static int madera_pin_conf_get(struct pinctrl_dev *pctldev, unsigned int pin, unsigned long *config) { struct madera_pin_private *priv = pinctrl_dev_get_drvdata(pctldev); unsigned int param = pinconf_to_config_param(*config); unsigned int result = 0; unsigned int reg = MADERA_GPIO1_CTRL_1 + (2 * pin); unsigned int conf[2]; int ret; ret = regmap_read(priv->madera->regmap, reg, &conf[0]); if (!ret) ret = regmap_read(priv->madera->regmap, reg + 1, &conf[1]); if (ret) { dev_err(priv->dev, "Failed to read GP%d conf (%d)\n", pin + 1, ret); return ret; } switch (param) { case PIN_CONFIG_BIAS_BUS_HOLD: conf[1] &= MADERA_GP1_PU_MASK | MADERA_GP1_PD_MASK; if (conf[1] == (MADERA_GP1_PU | MADERA_GP1_PD)) result = 1; break; case PIN_CONFIG_BIAS_DISABLE: conf[1] &= MADERA_GP1_PU_MASK | MADERA_GP1_PD_MASK; if (!conf[1]) result = 1; break; case PIN_CONFIG_BIAS_PULL_DOWN: conf[1] &= MADERA_GP1_PU_MASK | MADERA_GP1_PD_MASK; if (conf[1] == MADERA_GP1_PD_MASK) result = 1; break; case PIN_CONFIG_BIAS_PULL_UP: conf[1] &= MADERA_GP1_PU_MASK | MADERA_GP1_PD_MASK; if (conf[1] == MADERA_GP1_PU_MASK) result = 1; break; case PIN_CONFIG_DRIVE_OPEN_DRAIN: if (conf[0] & MADERA_GP1_OP_CFG_MASK) result = 1; break; case PIN_CONFIG_DRIVE_PUSH_PULL: if (!(conf[0] & MADERA_GP1_OP_CFG_MASK)) result = 1; break; case PIN_CONFIG_DRIVE_STRENGTH: result = madera_pin_unmake_drv_str(priv, conf[1]); break; case PIN_CONFIG_INPUT_DEBOUNCE: if (conf[0] & MADERA_GP1_DB_MASK) result = 1; break; case PIN_CONFIG_INPUT_ENABLE: if (conf[0] & MADERA_GP1_DIR_MASK) result = 1; break; case PIN_CONFIG_INPUT_SCHMITT: case PIN_CONFIG_INPUT_SCHMITT_ENABLE: if (conf[0] & MADERA_GP1_IP_CFG_MASK) result = 1; break; case PIN_CONFIG_OUTPUT: if ((conf[1] & MADERA_GP1_DIR_MASK) && (conf[0] & MADERA_GP1_LVL_MASK)) result = 1; break; default: break; } *config = pinconf_to_config_packed(param, result); return 0; } static int madera_pin_conf_set(struct pinctrl_dev *pctldev, unsigned int pin, unsigned long *configs, unsigned int num_configs) { struct madera_pin_private *priv = pinctrl_dev_get_drvdata(pctldev); u16 conf[2] = {0, 0}; u16 mask[2] = {0, 0}; unsigned int reg = MADERA_GPIO1_CTRL_1 + (2 * pin); unsigned int val; int ret; while (num_configs) { dev_dbg(priv->dev, "%s config 0x%lx\n", __func__, *configs); switch (pinconf_to_config_param(*configs)) { case PIN_CONFIG_BIAS_BUS_HOLD: mask[1] |= MADERA_GP1_PU_MASK | MADERA_GP1_PD_MASK; conf[1] |= MADERA_GP1_PU | MADERA_GP1_PD; break; case PIN_CONFIG_BIAS_DISABLE: mask[1] |= MADERA_GP1_PU_MASK | MADERA_GP1_PD_MASK; conf[1] &= ~(MADERA_GP1_PU | MADERA_GP1_PD); break; case PIN_CONFIG_BIAS_PULL_DOWN: mask[1] |= MADERA_GP1_PU_MASK | MADERA_GP1_PD_MASK; conf[1] |= MADERA_GP1_PD; conf[1] &= ~MADERA_GP1_PU; break; case PIN_CONFIG_BIAS_PULL_UP: mask[1] |= MADERA_GP1_PU_MASK | MADERA_GP1_PD_MASK; conf[1] |= MADERA_GP1_PU; conf[1] &= ~MADERA_GP1_PD; break; case PIN_CONFIG_DRIVE_OPEN_DRAIN: mask[0] |= MADERA_GP1_OP_CFG_MASK; conf[0] |= MADERA_GP1_OP_CFG; break; case PIN_CONFIG_DRIVE_PUSH_PULL: mask[0] |= MADERA_GP1_OP_CFG_MASK; conf[0] &= ~MADERA_GP1_OP_CFG; break; case PIN_CONFIG_DRIVE_STRENGTH: val = pinconf_to_config_argument(*configs); mask[1] |= MADERA_GP1_DRV_STR_MASK; conf[1] &= ~MADERA_GP1_DRV_STR_MASK; conf[1] |= madera_pin_make_drv_str(priv, val); break; case PIN_CONFIG_INPUT_DEBOUNCE: mask[0] |= MADERA_GP1_DB_MASK; /* * we can't configure debounce time per-pin so value * is just a flag */ val = pinconf_to_config_argument(*configs); if (val) conf[0] |= MADERA_GP1_DB; else conf[0] &= ~MADERA_GP1_DB; break; case PIN_CONFIG_INPUT_ENABLE: val = pinconf_to_config_argument(*configs); mask[1] |= MADERA_GP1_DIR_MASK; if (val) conf[1] |= MADERA_GP1_DIR; else conf[1] &= ~MADERA_GP1_DIR; break; case PIN_CONFIG_INPUT_SCHMITT: val = pinconf_to_config_argument(*configs); mask[0] |= MADERA_GP1_IP_CFG; if (val) conf[0] |= MADERA_GP1_IP_CFG; else conf[0] &= ~MADERA_GP1_IP_CFG; mask[1] |= MADERA_GP1_DIR_MASK; conf[1] |= MADERA_GP1_DIR; break; case PIN_CONFIG_INPUT_SCHMITT_ENABLE: mask[0] |= MADERA_GP1_IP_CFG; conf[0] |= MADERA_GP1_IP_CFG; mask[1] |= MADERA_GP1_DIR_MASK; conf[1] |= MADERA_GP1_DIR; break; case PIN_CONFIG_OUTPUT: val = pinconf_to_config_argument(*configs); mask[0] |= MADERA_GP1_LVL_MASK; if (val) conf[0] |= MADERA_GP1_LVL; else conf[0] &= ~MADERA_GP1_LVL; mask[1] |= MADERA_GP1_DIR_MASK; conf[1] &= ~MADERA_GP1_DIR; break; default: break; } ++configs; --num_configs; } dev_dbg(priv->dev, "%s gpio%d 0x%x:0x%x 0x%x:0x%x\n", __func__, pin + 1, reg, conf[0], reg + 1, conf[1]); ret = regmap_update_bits(priv->madera->regmap, reg, mask[0], conf[0]); if (ret) goto err; ++reg; ret = regmap_update_bits(priv->madera->regmap, reg, mask[1], conf[1]); if (ret) goto err; return 0; err: dev_err(priv->dev, "Failed to write GPIO%d conf (%d) reg 0x%x\n", pin + 1, ret, reg); return ret; } static int madera_pin_conf_group_set(struct pinctrl_dev *pctldev, unsigned int selector, unsigned long *configs, unsigned int num_configs) { struct madera_pin_private *priv = pinctrl_dev_get_drvdata(pctldev); const struct madera_pin_groups *pin_group; unsigned int n_groups = priv->chip->n_pin_groups; int i, ret; dev_dbg(priv->dev, "%s setting group %s\n", __func__, madera_get_group_name(pctldev, selector)); if (selector >= n_groups) { /* group is a single pin, convert to pin number and set */ return madera_pin_conf_set(pctldev, selector - n_groups, configs, num_configs); } else { pin_group = &priv->chip->pin_groups[selector]; for (i = 0; i < pin_group->n_pins; ++i) { ret = madera_pin_conf_set(pctldev, pin_group->pins[i], configs, num_configs); if (ret) return ret; } } return 0; } static const struct pinconf_ops madera_pin_conf_ops = { .pin_config_get = madera_pin_conf_get, .pin_config_set = madera_pin_conf_set, .pin_config_group_set = madera_pin_conf_group_set, }; static struct pinctrl_desc madera_pin_desc = { .name = "madera-pinctrl", .pins = madera_pins, .pctlops = &madera_pin_group_ops, .pmxops = &madera_pin_mux_ops, .confops = &madera_pin_conf_ops, .owner = THIS_MODULE, }; static int madera_pin_probe(struct platform_device *pdev) { struct madera *madera = dev_get_drvdata(pdev->dev.parent); const struct madera_pdata *pdata = dev_get_platdata(madera->dev); struct madera_pin_private *priv; int ret; BUILD_BUG_ON(ARRAY_SIZE(madera_pin_single_group_names) != ARRAY_SIZE(madera_pin_single_group_pins)); dev_dbg(&pdev->dev, "%s\n", __func__); priv = devm_kzalloc(&pdev->dev, sizeof(*priv), GFP_KERNEL); if (!priv) return -ENOMEM; priv->dev = &pdev->dev; priv->madera = madera; pdev->dev.of_node = madera->dev->of_node; switch (madera->type) { case CS47L35: if (IS_ENABLED(CONFIG_PINCTRL_CS47L35)) priv->chip = &cs47l35_pin_chip; break; case CS47L85: case WM1840: if (IS_ENABLED(CONFIG_PINCTRL_CS47L85)) priv->chip = &cs47l85_pin_chip; break; case CS47L90: case CS47L91: if (IS_ENABLED(CONFIG_PINCTRL_CS47L90)) priv->chip = &cs47l90_pin_chip; break; default: break; } if (!priv->chip) return -ENODEV; madera_pin_desc.npins = priv->chip->n_pins; ret = devm_pinctrl_register_and_init(&pdev->dev, &madera_pin_desc, priv, &priv->pctl); if (ret) { dev_err(priv->dev, "Failed pinctrl register (%d)\n", ret); return ret; } /* if the configuration is provided through pdata, apply it */ if (pdata) { ret = pinctrl_register_mappings(pdata->gpio_configs, pdata->n_gpio_configs); if (ret) { dev_err(priv->dev, "Failed to register pdata mappings (%d)\n", ret); return ret; } } ret = pinctrl_enable(priv->pctl); if (ret) { dev_err(priv->dev, "Failed to enable pinctrl (%d)\n", ret); return ret; } dev_dbg(priv->dev, "pinctrl probed ok\n"); return 0; } static struct platform_driver madera_pin_driver = { .probe = madera_pin_probe, .driver = { .name = "madera-pinctrl", }, }; module_platform_driver(madera_pin_driver); MODULE_DESCRIPTION("Madera pinctrl driver"); MODULE_AUTHOR("Richard Fitzgerald "); MODULE_LICENSE("GPL v2");