diff options
Diffstat (limited to 'drivers/pinctrl')
-rw-r--r-- | drivers/pinctrl/pinctrl-nomadik.c | 296 | ||||
-rw-r--r-- | drivers/pinctrl/pinctrl-nomadik.h | 14 |
2 files changed, 249 insertions, 61 deletions
diff --git a/drivers/pinctrl/pinctrl-nomadik.c b/drivers/pinctrl/pinctrl-nomadik.c index cd2b1a1..53a1111 100644 --- a/drivers/pinctrl/pinctrl-nomadik.c +++ b/drivers/pinctrl/pinctrl-nomadik.c @@ -4,7 +4,7 @@ * Copyright (C) 2008,2009 STMicroelectronics * Copyright (C) 2009 Alessandro Rubini <rubini@unipv.it> * Rewritten based on work by Prafulla WADASKAR <prafulla.wadaskar@st.com> - * Copyright (C) 2011 Linus Walleij <linus.walleij@linaro.org> + * Copyright (C) 2011-2013 Linus Walleij <linus.walleij@linaro.org> * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License version 2 as @@ -33,7 +33,6 @@ #include <linux/pinctrl/pinconf.h> /* Since we request GPIOs from ourself */ #include <linux/pinctrl/consumer.h> -#include <linux/platform_data/pinctrl-nomadik.h> #include "pinctrl-nomadik.h" #include "core.h" @@ -45,6 +44,221 @@ * Symbols in this file are called "nmk_gpio" for "nomadik gpio" */ +/* + * pin configurations are represented by 32-bit integers: + * + * bit 0.. 8 - Pin Number (512 Pins Maximum) + * bit 9..10 - Alternate Function Selection + * bit 11..12 - Pull up/down state + * bit 13 - Sleep mode behaviour + * bit 14 - Direction + * bit 15 - Value (if output) + * bit 16..18 - SLPM pull up/down state + * bit 19..20 - SLPM direction + * bit 21..22 - SLPM Value (if output) + * bit 23..25 - PDIS value (if input) + * bit 26 - Gpio mode + * bit 27 - Sleep mode + * + * to facilitate the definition, the following macros are provided + * + * PIN_CFG_DEFAULT - default config (0): + * pull up/down = disabled + * sleep mode = input/wakeup + * direction = input + * value = low + * SLPM direction = same as normal + * SLPM pull = same as normal + * SLPM value = same as normal + * + * PIN_CFG - default config with alternate function + */ + +typedef unsigned long pin_cfg_t; + +#define PIN_NUM_MASK 0x1ff +#define PIN_NUM(x) ((x) & PIN_NUM_MASK) + +#define PIN_ALT_SHIFT 9 +#define PIN_ALT_MASK (0x3 << PIN_ALT_SHIFT) +#define PIN_ALT(x) (((x) & PIN_ALT_MASK) >> PIN_ALT_SHIFT) +#define PIN_GPIO (NMK_GPIO_ALT_GPIO << PIN_ALT_SHIFT) +#define PIN_ALT_A (NMK_GPIO_ALT_A << PIN_ALT_SHIFT) +#define PIN_ALT_B (NMK_GPIO_ALT_B << PIN_ALT_SHIFT) +#define PIN_ALT_C (NMK_GPIO_ALT_C << PIN_ALT_SHIFT) + +#define PIN_PULL_SHIFT 11 +#define PIN_PULL_MASK (0x3 << PIN_PULL_SHIFT) +#define PIN_PULL(x) (((x) & PIN_PULL_MASK) >> PIN_PULL_SHIFT) +#define PIN_PULL_NONE (NMK_GPIO_PULL_NONE << PIN_PULL_SHIFT) +#define PIN_PULL_UP (NMK_GPIO_PULL_UP << PIN_PULL_SHIFT) +#define PIN_PULL_DOWN (NMK_GPIO_PULL_DOWN << PIN_PULL_SHIFT) + +#define PIN_SLPM_SHIFT 13 +#define PIN_SLPM_MASK (0x1 << PIN_SLPM_SHIFT) +#define PIN_SLPM(x) (((x) & PIN_SLPM_MASK) >> PIN_SLPM_SHIFT) +#define PIN_SLPM_MAKE_INPUT (NMK_GPIO_SLPM_INPUT << PIN_SLPM_SHIFT) +#define PIN_SLPM_NOCHANGE (NMK_GPIO_SLPM_NOCHANGE << PIN_SLPM_SHIFT) +/* These two replace the above in DB8500v2+ */ +#define PIN_SLPM_WAKEUP_ENABLE (NMK_GPIO_SLPM_WAKEUP_ENABLE << PIN_SLPM_SHIFT) +#define PIN_SLPM_WAKEUP_DISABLE (NMK_GPIO_SLPM_WAKEUP_DISABLE << PIN_SLPM_SHIFT) +#define PIN_SLPM_USE_MUX_SETTINGS_IN_SLEEP PIN_SLPM_WAKEUP_DISABLE + +#define PIN_SLPM_GPIO PIN_SLPM_WAKEUP_ENABLE /* In SLPM, pin is a gpio */ +#define PIN_SLPM_ALTFUNC PIN_SLPM_WAKEUP_DISABLE /* In SLPM, pin is altfunc */ + +#define PIN_DIR_SHIFT 14 +#define PIN_DIR_MASK (0x1 << PIN_DIR_SHIFT) +#define PIN_DIR(x) (((x) & PIN_DIR_MASK) >> PIN_DIR_SHIFT) +#define PIN_DIR_INPUT (0 << PIN_DIR_SHIFT) +#define PIN_DIR_OUTPUT (1 << PIN_DIR_SHIFT) + +#define PIN_VAL_SHIFT 15 +#define PIN_VAL_MASK (0x1 << PIN_VAL_SHIFT) +#define PIN_VAL(x) (((x) & PIN_VAL_MASK) >> PIN_VAL_SHIFT) +#define PIN_VAL_LOW (0 << PIN_VAL_SHIFT) +#define PIN_VAL_HIGH (1 << PIN_VAL_SHIFT) + +#define PIN_SLPM_PULL_SHIFT 16 +#define PIN_SLPM_PULL_MASK (0x7 << PIN_SLPM_PULL_SHIFT) +#define PIN_SLPM_PULL(x) \ + (((x) & PIN_SLPM_PULL_MASK) >> PIN_SLPM_PULL_SHIFT) +#define PIN_SLPM_PULL_NONE \ + ((1 + NMK_GPIO_PULL_NONE) << PIN_SLPM_PULL_SHIFT) +#define PIN_SLPM_PULL_UP \ + ((1 + NMK_GPIO_PULL_UP) << PIN_SLPM_PULL_SHIFT) +#define PIN_SLPM_PULL_DOWN \ + ((1 + NMK_GPIO_PULL_DOWN) << PIN_SLPM_PULL_SHIFT) + +#define PIN_SLPM_DIR_SHIFT 19 +#define PIN_SLPM_DIR_MASK (0x3 << PIN_SLPM_DIR_SHIFT) +#define PIN_SLPM_DIR(x) \ + (((x) & PIN_SLPM_DIR_MASK) >> PIN_SLPM_DIR_SHIFT) +#define PIN_SLPM_DIR_INPUT ((1 + 0) << PIN_SLPM_DIR_SHIFT) +#define PIN_SLPM_DIR_OUTPUT ((1 + 1) << PIN_SLPM_DIR_SHIFT) + +#define PIN_SLPM_VAL_SHIFT 21 +#define PIN_SLPM_VAL_MASK (0x3 << PIN_SLPM_VAL_SHIFT) +#define PIN_SLPM_VAL(x) \ + (((x) & PIN_SLPM_VAL_MASK) >> PIN_SLPM_VAL_SHIFT) +#define PIN_SLPM_VAL_LOW ((1 + 0) << PIN_SLPM_VAL_SHIFT) +#define PIN_SLPM_VAL_HIGH ((1 + 1) << PIN_SLPM_VAL_SHIFT) + +#define PIN_SLPM_PDIS_SHIFT 23 +#define PIN_SLPM_PDIS_MASK (0x3 << PIN_SLPM_PDIS_SHIFT) +#define PIN_SLPM_PDIS(x) \ + (((x) & PIN_SLPM_PDIS_MASK) >> PIN_SLPM_PDIS_SHIFT) +#define PIN_SLPM_PDIS_NO_CHANGE (0 << PIN_SLPM_PDIS_SHIFT) +#define PIN_SLPM_PDIS_DISABLED (1 << PIN_SLPM_PDIS_SHIFT) +#define PIN_SLPM_PDIS_ENABLED (2 << PIN_SLPM_PDIS_SHIFT) + +#define PIN_LOWEMI_SHIFT 25 +#define PIN_LOWEMI_MASK (0x1 << PIN_LOWEMI_SHIFT) +#define PIN_LOWEMI(x) (((x) & PIN_LOWEMI_MASK) >> PIN_LOWEMI_SHIFT) +#define PIN_LOWEMI_DISABLED (0 << PIN_LOWEMI_SHIFT) +#define PIN_LOWEMI_ENABLED (1 << PIN_LOWEMI_SHIFT) + +#define PIN_GPIOMODE_SHIFT 26 +#define PIN_GPIOMODE_MASK (0x1 << PIN_GPIOMODE_SHIFT) +#define PIN_GPIOMODE(x) (((x) & PIN_GPIOMODE_MASK) >> PIN_GPIOMODE_SHIFT) +#define PIN_GPIOMODE_DISABLED (0 << PIN_GPIOMODE_SHIFT) +#define PIN_GPIOMODE_ENABLED (1 << PIN_GPIOMODE_SHIFT) + +#define PIN_SLEEPMODE_SHIFT 27 +#define PIN_SLEEPMODE_MASK (0x1 << PIN_SLEEPMODE_SHIFT) +#define PIN_SLEEPMODE(x) (((x) & PIN_SLEEPMODE_MASK) >> PIN_SLEEPMODE_SHIFT) +#define PIN_SLEEPMODE_DISABLED (0 << PIN_SLEEPMODE_SHIFT) +#define PIN_SLEEPMODE_ENABLED (1 << PIN_SLEEPMODE_SHIFT) + + +/* Shortcuts. Use these instead of separate DIR, PULL, and VAL. */ +#define PIN_INPUT_PULLDOWN (PIN_DIR_INPUT | PIN_PULL_DOWN) +#define PIN_INPUT_PULLUP (PIN_DIR_INPUT | PIN_PULL_UP) +#define PIN_INPUT_NOPULL (PIN_DIR_INPUT | PIN_PULL_NONE) +#define PIN_OUTPUT_LOW (PIN_DIR_OUTPUT | PIN_VAL_LOW) +#define PIN_OUTPUT_HIGH (PIN_DIR_OUTPUT | PIN_VAL_HIGH) + +#define PIN_SLPM_INPUT_PULLDOWN (PIN_SLPM_DIR_INPUT | PIN_SLPM_PULL_DOWN) +#define PIN_SLPM_INPUT_PULLUP (PIN_SLPM_DIR_INPUT | PIN_SLPM_PULL_UP) +#define PIN_SLPM_INPUT_NOPULL (PIN_SLPM_DIR_INPUT | PIN_SLPM_PULL_NONE) +#define PIN_SLPM_OUTPUT_LOW (PIN_SLPM_DIR_OUTPUT | PIN_SLPM_VAL_LOW) +#define PIN_SLPM_OUTPUT_HIGH (PIN_SLPM_DIR_OUTPUT | PIN_SLPM_VAL_HIGH) + +#define PIN_CFG_DEFAULT (0) + +#define PIN_CFG(num, alt) \ + (PIN_CFG_DEFAULT |\ + (PIN_NUM(num) | PIN_##alt)) + +#define PIN_CFG_INPUT(num, alt, pull) \ + (PIN_CFG_DEFAULT |\ + (PIN_NUM(num) | PIN_##alt | PIN_INPUT_##pull)) + +#define PIN_CFG_OUTPUT(num, alt, val) \ + (PIN_CFG_DEFAULT |\ + (PIN_NUM(num) | PIN_##alt | PIN_OUTPUT_##val)) + +/* + * "nmk_gpio" and "NMK_GPIO" stand for "Nomadik GPIO", leaving + * the "gpio" namespace for generic and cross-machine functions + */ + +#define GPIO_BLOCK_SHIFT 5 +#define NMK_GPIO_PER_CHIP (1 << GPIO_BLOCK_SHIFT) + +/* Register in the logic block */ +#define NMK_GPIO_DAT 0x00 +#define NMK_GPIO_DATS 0x04 +#define NMK_GPIO_DATC 0x08 +#define NMK_GPIO_PDIS 0x0c +#define NMK_GPIO_DIR 0x10 +#define NMK_GPIO_DIRS 0x14 +#define NMK_GPIO_DIRC 0x18 +#define NMK_GPIO_SLPC 0x1c +#define NMK_GPIO_AFSLA 0x20 +#define NMK_GPIO_AFSLB 0x24 +#define NMK_GPIO_LOWEMI 0x28 + +#define NMK_GPIO_RIMSC 0x40 +#define NMK_GPIO_FIMSC 0x44 +#define NMK_GPIO_IS 0x48 +#define NMK_GPIO_IC 0x4c +#define NMK_GPIO_RWIMSC 0x50 +#define NMK_GPIO_FWIMSC 0x54 +#define NMK_GPIO_WKS 0x58 +/* These appear in DB8540 and later ASICs */ +#define NMK_GPIO_EDGELEVEL 0x5C +#define NMK_GPIO_LEVEL 0x60 + + +/* Pull up/down values */ +enum nmk_gpio_pull { + NMK_GPIO_PULL_NONE, + NMK_GPIO_PULL_UP, + NMK_GPIO_PULL_DOWN, +}; + +/* Sleep mode */ +enum nmk_gpio_slpm { + NMK_GPIO_SLPM_INPUT, + NMK_GPIO_SLPM_WAKEUP_ENABLE = NMK_GPIO_SLPM_INPUT, + NMK_GPIO_SLPM_NOCHANGE, + NMK_GPIO_SLPM_WAKEUP_DISABLE = NMK_GPIO_SLPM_NOCHANGE, +}; + +/* + * Platform data to register a block: only the initial gpio/irq number. + */ +struct nmk_gpio_platform_data { + char *name; + int first_gpio; + int first_irq; + int num_gpio; + u32 (*get_secondary_status)(unsigned int bank); + void (*set_ioforce)(bool enable); + bool supports_sleepmode; +}; + struct nmk_gpio_chip { struct gpio_chip chip; struct irq_domain *domain; @@ -1026,7 +1240,7 @@ static const struct irq_domain_ops nmk_gpio_irq_simple_ops = { static int nmk_gpio_probe(struct platform_device *dev) { - struct nmk_gpio_platform_data *pdata = dev->dev.platform_data; + struct nmk_gpio_platform_data *pdata; struct device_node *np = dev->dev.of_node; struct nmk_gpio_chip *nmk_chip; struct gpio_chip *chip; @@ -1034,32 +1248,24 @@ static int nmk_gpio_probe(struct platform_device *dev) struct clk *clk; int secondary_irq; void __iomem *base; - int irq_start = 0; int irq; int ret; - if (!pdata && !np) { - dev_err(&dev->dev, "No platform data or device tree found\n"); - return -ENODEV; - } - - if (np) { - pdata = devm_kzalloc(&dev->dev, sizeof(*pdata), GFP_KERNEL); - if (!pdata) - return -ENOMEM; - - if (of_get_property(np, "st,supports-sleepmode", NULL)) - pdata->supports_sleepmode = true; + pdata = devm_kzalloc(&dev->dev, sizeof(*pdata), GFP_KERNEL); + if (!pdata) + return -ENOMEM; - if (of_property_read_u32(np, "gpio-bank", &dev->id)) { - dev_err(&dev->dev, "gpio-bank property not found\n"); - return -EINVAL; - } + if (of_get_property(np, "st,supports-sleepmode", NULL)) + pdata->supports_sleepmode = true; - pdata->first_gpio = dev->id * NMK_GPIO_PER_CHIP; - pdata->num_gpio = NMK_GPIO_PER_CHIP; + if (of_property_read_u32(np, "gpio-bank", &dev->id)) { + dev_err(&dev->dev, "gpio-bank property not found\n"); + return -EINVAL; } + pdata->first_gpio = dev->id * NMK_GPIO_PER_CHIP; + pdata->num_gpio = NMK_GPIO_PER_CHIP; + irq = platform_get_irq(dev, 0); if (irq < 0) return irq; @@ -1107,10 +1313,7 @@ static int nmk_gpio_probe(struct platform_device *dev) clk_enable(nmk_chip->clk); nmk_chip->lowemi = readl_relaxed(nmk_chip->addr + NMK_GPIO_LOWEMI); clk_disable(nmk_chip->clk); - -#ifdef CONFIG_OF_GPIO chip->of_node = np; -#endif ret = gpiochip_add(&nmk_chip->chip); if (ret) @@ -1122,10 +1325,8 @@ static int nmk_gpio_probe(struct platform_device *dev) platform_set_drvdata(dev, nmk_chip); - if (!np) - irq_start = pdata->first_irq; nmk_chip->domain = irq_domain_add_simple(np, - NMK_GPIO_PER_CHIP, irq_start, + NMK_GPIO_PER_CHIP, 0, &nmk_gpio_irq_simple_ops, nmk_chip); if (!nmk_chip->domain) { dev_err(&dev->dev, "failed to create irqdomain\n"); @@ -1858,11 +2059,10 @@ static int nmk_pinctrl_resume(struct platform_device *pdev) static int nmk_pinctrl_probe(struct platform_device *pdev) { - const struct platform_device_id *platid = platform_get_device_id(pdev); + const struct of_device_id *match; struct device_node *np = pdev->dev.of_node; struct device_node *prcm_np; struct nmk_pinctrl *npct; - struct resource *res; unsigned int version = 0; int i; @@ -1870,16 +2070,10 @@ static int nmk_pinctrl_probe(struct platform_device *pdev) if (!npct) return -ENOMEM; - if (platid) - version = platid->driver_data; - else if (np) { - const struct of_device_id *match; - - match = of_match_device(nmk_pinctrl_match, &pdev->dev); - if (!match) - return -ENODEV; - version = (unsigned int) match->data; - } + match = of_match_device(nmk_pinctrl_match, &pdev->dev); + if (!match) + return -ENODEV; + version = (unsigned int) match->data; /* Poke in other ASIC variants here */ if (version == PINCTRL_NMK_STN8815) @@ -1889,17 +2083,9 @@ static int nmk_pinctrl_probe(struct platform_device *pdev) if (version == PINCTRL_NMK_DB8540) nmk_pinctrl_db8540_init(&npct->soc); - if (np) { - prcm_np = of_parse_phandle(np, "prcm", 0); - if (prcm_np) - npct->prcm_base = of_iomap(prcm_np, 0); - } - - /* Allow platform passed information to over-write DT. */ - res = platform_get_resource(pdev, IORESOURCE_MEM, 0); - if (res) - npct->prcm_base = devm_ioremap(&pdev->dev, res->start, - resource_size(res)); + prcm_np = of_parse_phandle(np, "prcm", 0); + if (prcm_np) + npct->prcm_base = of_iomap(prcm_np, 0); if (!npct->prcm_base) { if (version == PINCTRL_NMK_STN8815) { dev_info(&pdev->dev, @@ -1958,13 +2144,6 @@ static struct platform_driver nmk_gpio_driver = { .probe = nmk_gpio_probe, }; -static const struct platform_device_id nmk_pinctrl_id[] = { - { "pinctrl-stn8815", PINCTRL_NMK_STN8815 }, - { "pinctrl-db8500", PINCTRL_NMK_DB8500 }, - { "pinctrl-db8540", PINCTRL_NMK_DB8540 }, - { } -}; - static struct platform_driver nmk_pinctrl_driver = { .driver = { .owner = THIS_MODULE, @@ -1972,7 +2151,6 @@ static struct platform_driver nmk_pinctrl_driver = { .of_match_table = nmk_pinctrl_match, }, .probe = nmk_pinctrl_probe, - .id_table = nmk_pinctrl_id, #ifdef CONFIG_PM .suspend = nmk_pinctrl_suspend, .resume = nmk_pinctrl_resume, diff --git a/drivers/pinctrl/pinctrl-nomadik.h b/drivers/pinctrl/pinctrl-nomadik.h index bcd4191..d8215f1 100644 --- a/drivers/pinctrl/pinctrl-nomadik.h +++ b/drivers/pinctrl/pinctrl-nomadik.h @@ -1,13 +1,23 @@ #ifndef PINCTRL_PINCTRL_NOMADIK_H #define PINCTRL_PINCTRL_NOMADIK_H -#include <linux/platform_data/pinctrl-nomadik.h> - /* Package definitions */ #define PINCTRL_NMK_STN8815 0 #define PINCTRL_NMK_DB8500 1 #define PINCTRL_NMK_DB8540 2 +/* Alternate functions: function C is set in hw by setting both A and B */ +#define NMK_GPIO_ALT_GPIO 0 +#define NMK_GPIO_ALT_A 1 +#define NMK_GPIO_ALT_B 2 +#define NMK_GPIO_ALT_C (NMK_GPIO_ALT_A | NMK_GPIO_ALT_B) + +#define NMK_GPIO_ALT_CX_SHIFT 2 +#define NMK_GPIO_ALT_C1 ((1<<NMK_GPIO_ALT_CX_SHIFT) | NMK_GPIO_ALT_C) +#define NMK_GPIO_ALT_C2 ((2<<NMK_GPIO_ALT_CX_SHIFT) | NMK_GPIO_ALT_C) +#define NMK_GPIO_ALT_C3 ((3<<NMK_GPIO_ALT_CX_SHIFT) | NMK_GPIO_ALT_C) +#define NMK_GPIO_ALT_C4 ((4<<NMK_GPIO_ALT_CX_SHIFT) | NMK_GPIO_ALT_C) + #define PRCM_GPIOCR_ALTCX(pin_num,\ altc1_used, altc1_ri, altc1_cb,\ altc2_used, altc2_ri, altc2_cb,\ |