linux/drivers/pinctrl/pinctrl-digicolor.c

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// SPDX-License-Identifier: GPL-2.0-or-later
/*
* Driver for Conexant Digicolor General Purpose Pin Mapping
*
* Author: Baruch Siach <baruch@tkos.co.il>
*
* Copyright (C) 2015 Paradox Innovation Ltd.
*
* TODO:
* - GPIO interrupt support
* - Pin pad configuration (pull up/down, strength)
*/
#include <linux/init.h>
#include <linux/platform_device.h>
#include <linux/of.h>
#include <linux/of_device.h>
#include <linux/io.h>
#include <linux/gpio/driver.h>
#include <linux/spinlock.h>
#include <linux/pinctrl/machine.h>
#include <linux/pinctrl/pinconf.h>
#include <linux/pinctrl/pinconf-generic.h>
#include <linux/pinctrl/pinctrl.h>
#include <linux/pinctrl/pinmux.h>
#include "pinctrl-utils.h"
#define DRIVER_NAME "pinctrl-digicolor"
#define GP_CLIENTSEL(clct) ((clct)*8 + 0x20)
#define GP_DRIVE0(clct) (GP_CLIENTSEL(clct) + 2)
#define GP_OUTPUT0(clct) (GP_CLIENTSEL(clct) + 3)
#define GP_INPUT(clct) (GP_CLIENTSEL(clct) + 6)
#define PIN_COLLECTIONS ('R' - 'A' + 1)
#define PINS_PER_COLLECTION 8
#define PINS_COUNT (PIN_COLLECTIONS * PINS_PER_COLLECTION)
struct dc_pinmap {
void __iomem *regs;
struct device *dev;
struct pinctrl_dev *pctl;
struct pinctrl_desc *desc;
const char *pin_names[PINS_COUNT];
struct gpio_chip chip;
spinlock_t lock;
};
static int dc_get_groups_count(struct pinctrl_dev *pctldev)
{
return PINS_COUNT;
}
static const char *dc_get_group_name(struct pinctrl_dev *pctldev,
unsigned selector)
{
struct dc_pinmap *pmap = pinctrl_dev_get_drvdata(pctldev);
/* Exactly one group per pin */
return pmap->desc->pins[selector].name;
}
static int dc_get_group_pins(struct pinctrl_dev *pctldev, unsigned selector,
const unsigned **pins,
unsigned *num_pins)
{
struct dc_pinmap *pmap = pinctrl_dev_get_drvdata(pctldev);
*pins = &pmap->desc->pins[selector].number;
*num_pins = 1;
return 0;
}
static const struct pinctrl_ops dc_pinctrl_ops = {
.get_groups_count = dc_get_groups_count,
.get_group_name = dc_get_group_name,
.get_group_pins = dc_get_group_pins,
.dt_node_to_map = pinconf_generic_dt_node_to_map_pin,
.dt_free_map = pinctrl_utils_free_map,
};
static const char *const dc_functions[] = {
"gpio",
"client_a",
"client_b",
"client_c",
};
static int dc_get_functions_count(struct pinctrl_dev *pctldev)
{
return ARRAY_SIZE(dc_functions);
}
static const char *dc_get_fname(struct pinctrl_dev *pctldev, unsigned selector)
{
return dc_functions[selector];
}
static int dc_get_groups(struct pinctrl_dev *pctldev, unsigned selector,
const char * const **groups,
unsigned * const num_groups)
{
struct dc_pinmap *pmap = pinctrl_dev_get_drvdata(pctldev);
*groups = pmap->pin_names;
*num_groups = PINS_COUNT;
return 0;
}
static void dc_client_sel(int pin_num, int *reg, int *bit)
{
*bit = (pin_num % PINS_PER_COLLECTION) * 2;
*reg = GP_CLIENTSEL(pin_num/PINS_PER_COLLECTION);
if (*bit >= PINS_PER_COLLECTION) {
*bit -= PINS_PER_COLLECTION;
*reg += 1;
}
}
static int dc_set_mux(struct pinctrl_dev *pctldev, unsigned selector,
unsigned group)
{
struct dc_pinmap *pmap = pinctrl_dev_get_drvdata(pctldev);
int bit_off, reg_off;
u8 reg;
dc_client_sel(group, &reg_off, &bit_off);
reg = readb_relaxed(pmap->regs + reg_off);
reg &= ~(3 << bit_off);
reg |= (selector << bit_off);
writeb_relaxed(reg, pmap->regs + reg_off);
return 0;
}
static int dc_pmx_request_gpio(struct pinctrl_dev *pcdev,
struct pinctrl_gpio_range *range,
unsigned offset)
{
struct dc_pinmap *pmap = pinctrl_dev_get_drvdata(pcdev);
int bit_off, reg_off;
u8 reg;
dc_client_sel(offset, &reg_off, &bit_off);
reg = readb_relaxed(pmap->regs + reg_off);
if ((reg & (3 << bit_off)) != 0)
return -EBUSY;
return 0;
}
static const struct pinmux_ops dc_pmxops = {
.get_functions_count = dc_get_functions_count,
.get_function_name = dc_get_fname,
.get_function_groups = dc_get_groups,
.set_mux = dc_set_mux,
.gpio_request_enable = dc_pmx_request_gpio,
};
static int dc_gpio_direction_input(struct gpio_chip *chip, unsigned gpio)
{
struct dc_pinmap *pmap = gpiochip_get_data(chip);
int reg_off = GP_DRIVE0(gpio/PINS_PER_COLLECTION);
int bit_off = gpio % PINS_PER_COLLECTION;
u8 drive;
unsigned long flags;
spin_lock_irqsave(&pmap->lock, flags);
drive = readb_relaxed(pmap->regs + reg_off);
drive &= ~BIT(bit_off);
writeb_relaxed(drive, pmap->regs + reg_off);
spin_unlock_irqrestore(&pmap->lock, flags);
return 0;
}
static void dc_gpio_set(struct gpio_chip *chip, unsigned gpio, int value);
static int dc_gpio_direction_output(struct gpio_chip *chip, unsigned gpio,
int value)
{
struct dc_pinmap *pmap = gpiochip_get_data(chip);
int reg_off = GP_DRIVE0(gpio/PINS_PER_COLLECTION);
int bit_off = gpio % PINS_PER_COLLECTION;
u8 drive;
unsigned long flags;
dc_gpio_set(chip, gpio, value);
spin_lock_irqsave(&pmap->lock, flags);
drive = readb_relaxed(pmap->regs + reg_off);
drive |= BIT(bit_off);
writeb_relaxed(drive, pmap->regs + reg_off);
spin_unlock_irqrestore(&pmap->lock, flags);
return 0;
}
static int dc_gpio_get(struct gpio_chip *chip, unsigned gpio)
{
struct dc_pinmap *pmap = gpiochip_get_data(chip);
int reg_off = GP_INPUT(gpio/PINS_PER_COLLECTION);
int bit_off = gpio % PINS_PER_COLLECTION;
u8 input;
input = readb_relaxed(pmap->regs + reg_off);
return !!(input & BIT(bit_off));
}
static void dc_gpio_set(struct gpio_chip *chip, unsigned gpio, int value)
{
struct dc_pinmap *pmap = gpiochip_get_data(chip);
int reg_off = GP_OUTPUT0(gpio/PINS_PER_COLLECTION);
int bit_off = gpio % PINS_PER_COLLECTION;
u8 output;
unsigned long flags;
spin_lock_irqsave(&pmap->lock, flags);
output = readb_relaxed(pmap->regs + reg_off);
if (value)
output |= BIT(bit_off);
else
output &= ~BIT(bit_off);
writeb_relaxed(output, pmap->regs + reg_off);
spin_unlock_irqrestore(&pmap->lock, flags);
}
static int dc_gpiochip_add(struct dc_pinmap *pmap)
{
struct gpio_chip *chip = &pmap->chip;
int ret;
chip->label = DRIVER_NAME;
gpio: change member .dev to .parent The name .dev in a struct is normally reserved for a struct device that is let us say a superclass to the thing described by the struct. struct gpio_chip stands out by confusingly using a struct device *dev to point to the parent device (such as a platform_device) that represents the hardware. As we want to give gpio_chip:s real devices, this is not working. We need to rename this member to parent. This was done by two coccinelle scripts, I guess it is possible to combine them into one, but I don't know such stuff. They look like this: @@ struct gpio_chip *var; @@ -var->dev +var->parent and: @@ struct gpio_chip var; @@ -var.dev +var.parent and: @@ struct bgpio_chip *var; @@ -var->gc.dev +var->gc.parent Plus a few instances of bgpio that I couldn't figure out how to teach Coccinelle to rewrite. This patch hits all over the place, but I *strongly* prefer this solution to any piecemal approaches that just exercise patch mechanics all over the place. It mainly hits drivers/gpio and drivers/pinctrl which is my own backyard anyway. Cc: Haavard Skinnemoen <hskinnemoen@gmail.com> Cc: Rafał Miłecki <zajec5@gmail.com> Cc: Richard Purdie <rpurdie@rpsys.net> Cc: Mauro Carvalho Chehab <mchehab@osg.samsung.com> Cc: Alek Du <alek.du@intel.com> Cc: Jaroslav Kysela <perex@perex.cz> Cc: Takashi Iwai <tiwai@suse.com> Acked-by: Dmitry Torokhov <dmitry.torokhov@gmail.com> Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Acked-by: Lee Jones <lee.jones@linaro.org> Acked-by: Jiri Kosina <jkosina@suse.cz> Acked-by: Hans-Christian Egtvedt <egtvedt@samfundet.no> Acked-by: Jacek Anaszewski <j.anaszewski@samsung.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2015-11-04 16:56:26 +08:00
chip->parent = pmap->dev;
chip->request = gpiochip_generic_request;
chip->free = gpiochip_generic_free;
chip->direction_input = dc_gpio_direction_input;
chip->direction_output = dc_gpio_direction_output;
chip->get = dc_gpio_get;
chip->set = dc_gpio_set;
chip->base = -1;
chip->ngpio = PINS_COUNT;
chip->of_gpio_n_cells = 2;
spin_lock_init(&pmap->lock);
ret = gpiochip_add_data(chip, pmap);
if (ret < 0)
return ret;
ret = gpiochip_add_pin_range(chip, dev_name(pmap->dev), 0, 0,
PINS_COUNT);
if (ret < 0) {
gpiochip_remove(chip);
return ret;
}
return 0;
}
static int dc_pinctrl_probe(struct platform_device *pdev)
{
struct dc_pinmap *pmap;
struct pinctrl_pin_desc *pins;
struct pinctrl_desc *pctl_desc;
char *pin_names;
int name_len = strlen("GP_xx") + 1;
int i, j;
pmap = devm_kzalloc(&pdev->dev, sizeof(*pmap), GFP_KERNEL);
if (!pmap)
return -ENOMEM;
pmap->regs = devm_platform_ioremap_resource(pdev, 0);
if (IS_ERR(pmap->regs))
return PTR_ERR(pmap->regs);
treewide: devm_kzalloc() -> devm_kcalloc() The devm_kzalloc() function has a 2-factor argument form, devm_kcalloc(). This patch replaces cases of: devm_kzalloc(handle, a * b, gfp) with: devm_kcalloc(handle, a * b, gfp) as well as handling cases of: devm_kzalloc(handle, a * b * c, gfp) with: devm_kzalloc(handle, array3_size(a, b, c), gfp) as it's slightly less ugly than: devm_kcalloc(handle, array_size(a, b), c, gfp) This does, however, attempt to ignore constant size factors like: devm_kzalloc(handle, 4 * 1024, gfp) though any constants defined via macros get caught up in the conversion. Any factors with a sizeof() of "unsigned char", "char", and "u8" were dropped, since they're redundant. Some manual whitespace fixes were needed in this patch, as Coccinelle really liked to write "=devm_kcalloc..." instead of "= devm_kcalloc...". The Coccinelle script used for this was: // Fix redundant parens around sizeof(). @@ expression HANDLE; type TYPE; expression THING, E; @@ ( devm_kzalloc(HANDLE, - (sizeof(TYPE)) * E + sizeof(TYPE) * E , ...) | devm_kzalloc(HANDLE, - (sizeof(THING)) * E + sizeof(THING) * E , ...) ) // Drop single-byte sizes and redundant parens. @@ expression HANDLE; expression COUNT; typedef u8; typedef __u8; @@ ( devm_kzalloc(HANDLE, - sizeof(u8) * (COUNT) + COUNT , ...) | devm_kzalloc(HANDLE, - sizeof(__u8) * (COUNT) + COUNT , ...) | devm_kzalloc(HANDLE, - sizeof(char) * (COUNT) + COUNT , ...) | devm_kzalloc(HANDLE, - sizeof(unsigned char) * (COUNT) + COUNT , ...) | devm_kzalloc(HANDLE, - sizeof(u8) * COUNT + COUNT , ...) | devm_kzalloc(HANDLE, - sizeof(__u8) * COUNT + COUNT , ...) | devm_kzalloc(HANDLE, - sizeof(char) * COUNT + COUNT , ...) | devm_kzalloc(HANDLE, - sizeof(unsigned char) * COUNT + COUNT , ...) ) // 2-factor product with sizeof(type/expression) and identifier or constant. @@ expression HANDLE; type TYPE; expression THING; identifier COUNT_ID; constant COUNT_CONST; @@ ( - devm_kzalloc + devm_kcalloc (HANDLE, - sizeof(TYPE) * (COUNT_ID) + COUNT_ID, sizeof(TYPE) , ...) | - devm_kzalloc + devm_kcalloc (HANDLE, - sizeof(TYPE) * COUNT_ID + COUNT_ID, sizeof(TYPE) , ...) | - devm_kzalloc + devm_kcalloc (HANDLE, - sizeof(TYPE) * (COUNT_CONST) + COUNT_CONST, sizeof(TYPE) , ...) | - devm_kzalloc + devm_kcalloc (HANDLE, - sizeof(TYPE) * COUNT_CONST + COUNT_CONST, sizeof(TYPE) , ...) | - devm_kzalloc + devm_kcalloc (HANDLE, - sizeof(THING) * (COUNT_ID) + COUNT_ID, sizeof(THING) , ...) | - devm_kzalloc + devm_kcalloc (HANDLE, - sizeof(THING) * COUNT_ID + COUNT_ID, sizeof(THING) , ...) | - devm_kzalloc + devm_kcalloc (HANDLE, - sizeof(THING) * (COUNT_CONST) + COUNT_CONST, sizeof(THING) , ...) | - devm_kzalloc + devm_kcalloc (HANDLE, - sizeof(THING) * COUNT_CONST + COUNT_CONST, sizeof(THING) , ...) ) // 2-factor product, only identifiers. @@ expression HANDLE; identifier SIZE, COUNT; @@ - devm_kzalloc + devm_kcalloc (HANDLE, - SIZE * COUNT + COUNT, SIZE , ...) // 3-factor product with 1 sizeof(type) or sizeof(expression), with // redundant parens removed. @@ expression HANDLE; expression THING; identifier STRIDE, COUNT; type TYPE; @@ ( devm_kzalloc(HANDLE, - sizeof(TYPE) * (COUNT) * (STRIDE) + array3_size(COUNT, STRIDE, sizeof(TYPE)) , ...) | devm_kzalloc(HANDLE, - sizeof(TYPE) * (COUNT) * STRIDE + array3_size(COUNT, STRIDE, sizeof(TYPE)) , ...) | devm_kzalloc(HANDLE, - sizeof(TYPE) * COUNT * (STRIDE) + array3_size(COUNT, STRIDE, sizeof(TYPE)) , ...) | devm_kzalloc(HANDLE, - sizeof(TYPE) * COUNT * STRIDE + array3_size(COUNT, STRIDE, sizeof(TYPE)) , ...) | devm_kzalloc(HANDLE, - sizeof(THING) * (COUNT) * (STRIDE) + array3_size(COUNT, STRIDE, sizeof(THING)) , ...) | devm_kzalloc(HANDLE, - sizeof(THING) * (COUNT) * STRIDE + array3_size(COUNT, STRIDE, sizeof(THING)) , ...) | devm_kzalloc(HANDLE, - sizeof(THING) * COUNT * (STRIDE) + array3_size(COUNT, STRIDE, sizeof(THING)) , ...) | devm_kzalloc(HANDLE, - sizeof(THING) * COUNT * STRIDE + array3_size(COUNT, STRIDE, sizeof(THING)) , ...) ) // 3-factor product with 2 sizeof(variable), with redundant parens removed. @@ expression HANDLE; expression THING1, THING2; identifier COUNT; type TYPE1, TYPE2; @@ ( devm_kzalloc(HANDLE, - sizeof(TYPE1) * sizeof(TYPE2) * COUNT + array3_size(COUNT, sizeof(TYPE1), sizeof(TYPE2)) , ...) | devm_kzalloc(HANDLE, - sizeof(TYPE1) * sizeof(THING2) * (COUNT) + array3_size(COUNT, sizeof(TYPE1), sizeof(TYPE2)) , ...) | devm_kzalloc(HANDLE, - sizeof(THING1) * sizeof(THING2) * COUNT + array3_size(COUNT, sizeof(THING1), sizeof(THING2)) , ...) | devm_kzalloc(HANDLE, - sizeof(THING1) * sizeof(THING2) * (COUNT) + array3_size(COUNT, sizeof(THING1), sizeof(THING2)) , ...) | devm_kzalloc(HANDLE, - sizeof(TYPE1) * sizeof(THING2) * COUNT + array3_size(COUNT, sizeof(TYPE1), sizeof(THING2)) , ...) | devm_kzalloc(HANDLE, - sizeof(TYPE1) * sizeof(THING2) * (COUNT) + array3_size(COUNT, sizeof(TYPE1), sizeof(THING2)) , ...) ) // 3-factor product, only identifiers, with redundant parens removed. @@ expression HANDLE; identifier STRIDE, SIZE, COUNT; @@ ( devm_kzalloc(HANDLE, - (COUNT) * STRIDE * SIZE + array3_size(COUNT, STRIDE, SIZE) , ...) | devm_kzalloc(HANDLE, - COUNT * (STRIDE) * SIZE + array3_size(COUNT, STRIDE, SIZE) , ...) | devm_kzalloc(HANDLE, - COUNT * STRIDE * (SIZE) + array3_size(COUNT, STRIDE, SIZE) , ...) | devm_kzalloc(HANDLE, - (COUNT) * (STRIDE) * SIZE + array3_size(COUNT, STRIDE, SIZE) , ...) | devm_kzalloc(HANDLE, - COUNT * (STRIDE) * (SIZE) + array3_size(COUNT, STRIDE, SIZE) , ...) | devm_kzalloc(HANDLE, - (COUNT) * STRIDE * (SIZE) + array3_size(COUNT, STRIDE, SIZE) , ...) | devm_kzalloc(HANDLE, - (COUNT) * (STRIDE) * (SIZE) + array3_size(COUNT, STRIDE, SIZE) , ...) | devm_kzalloc(HANDLE, - COUNT * STRIDE * SIZE + array3_size(COUNT, STRIDE, SIZE) , ...) ) // Any remaining multi-factor products, first at least 3-factor products, // when they're not all constants... @@ expression HANDLE; expression E1, E2, E3; constant C1, C2, C3; @@ ( devm_kzalloc(HANDLE, C1 * C2 * C3, ...) | devm_kzalloc(HANDLE, - (E1) * E2 * E3 + array3_size(E1, E2, E3) , ...) | devm_kzalloc(HANDLE, - (E1) * (E2) * E3 + array3_size(E1, E2, E3) , ...) | devm_kzalloc(HANDLE, - (E1) * (E2) * (E3) + array3_size(E1, E2, E3) , ...) | devm_kzalloc(HANDLE, - E1 * E2 * E3 + array3_size(E1, E2, E3) , ...) ) // And then all remaining 2 factors products when they're not all constants, // keeping sizeof() as the second factor argument. @@ expression HANDLE; expression THING, E1, E2; type TYPE; constant C1, C2, C3; @@ ( devm_kzalloc(HANDLE, sizeof(THING) * C2, ...) | devm_kzalloc(HANDLE, sizeof(TYPE) * C2, ...) | devm_kzalloc(HANDLE, C1 * C2 * C3, ...) | devm_kzalloc(HANDLE, C1 * C2, ...) | - devm_kzalloc + devm_kcalloc (HANDLE, - sizeof(TYPE) * (E2) + E2, sizeof(TYPE) , ...) | - devm_kzalloc + devm_kcalloc (HANDLE, - sizeof(TYPE) * E2 + E2, sizeof(TYPE) , ...) | - devm_kzalloc + devm_kcalloc (HANDLE, - sizeof(THING) * (E2) + E2, sizeof(THING) , ...) | - devm_kzalloc + devm_kcalloc (HANDLE, - sizeof(THING) * E2 + E2, sizeof(THING) , ...) | - devm_kzalloc + devm_kcalloc (HANDLE, - (E1) * E2 + E1, E2 , ...) | - devm_kzalloc + devm_kcalloc (HANDLE, - (E1) * (E2) + E1, E2 , ...) | - devm_kzalloc + devm_kcalloc (HANDLE, - E1 * E2 + E1, E2 , ...) ) Signed-off-by: Kees Cook <keescook@chromium.org>
2018-06-13 05:07:58 +08:00
pins = devm_kcalloc(&pdev->dev, PINS_COUNT, sizeof(*pins),
GFP_KERNEL);
if (!pins)
return -ENOMEM;
treewide: devm_kzalloc() -> devm_kcalloc() The devm_kzalloc() function has a 2-factor argument form, devm_kcalloc(). This patch replaces cases of: devm_kzalloc(handle, a * b, gfp) with: devm_kcalloc(handle, a * b, gfp) as well as handling cases of: devm_kzalloc(handle, a * b * c, gfp) with: devm_kzalloc(handle, array3_size(a, b, c), gfp) as it's slightly less ugly than: devm_kcalloc(handle, array_size(a, b), c, gfp) This does, however, attempt to ignore constant size factors like: devm_kzalloc(handle, 4 * 1024, gfp) though any constants defined via macros get caught up in the conversion. Any factors with a sizeof() of "unsigned char", "char", and "u8" were dropped, since they're redundant. Some manual whitespace fixes were needed in this patch, as Coccinelle really liked to write "=devm_kcalloc..." instead of "= devm_kcalloc...". The Coccinelle script used for this was: // Fix redundant parens around sizeof(). @@ expression HANDLE; type TYPE; expression THING, E; @@ ( devm_kzalloc(HANDLE, - (sizeof(TYPE)) * E + sizeof(TYPE) * E , ...) | devm_kzalloc(HANDLE, - (sizeof(THING)) * E + sizeof(THING) * E , ...) ) // Drop single-byte sizes and redundant parens. @@ expression HANDLE; expression COUNT; typedef u8; typedef __u8; @@ ( devm_kzalloc(HANDLE, - sizeof(u8) * (COUNT) + COUNT , ...) | devm_kzalloc(HANDLE, - sizeof(__u8) * (COUNT) + COUNT , ...) | devm_kzalloc(HANDLE, - sizeof(char) * (COUNT) + COUNT , ...) | devm_kzalloc(HANDLE, - sizeof(unsigned char) * (COUNT) + COUNT , ...) | devm_kzalloc(HANDLE, - sizeof(u8) * COUNT + COUNT , ...) | devm_kzalloc(HANDLE, - sizeof(__u8) * COUNT + COUNT , ...) | devm_kzalloc(HANDLE, - sizeof(char) * COUNT + COUNT , ...) | devm_kzalloc(HANDLE, - sizeof(unsigned char) * COUNT + COUNT , ...) ) // 2-factor product with sizeof(type/expression) and identifier or constant. @@ expression HANDLE; type TYPE; expression THING; identifier COUNT_ID; constant COUNT_CONST; @@ ( - devm_kzalloc + devm_kcalloc (HANDLE, - sizeof(TYPE) * (COUNT_ID) + COUNT_ID, sizeof(TYPE) , ...) | - devm_kzalloc + devm_kcalloc (HANDLE, - sizeof(TYPE) * COUNT_ID + COUNT_ID, sizeof(TYPE) , ...) | - devm_kzalloc + devm_kcalloc (HANDLE, - sizeof(TYPE) * (COUNT_CONST) + COUNT_CONST, sizeof(TYPE) , ...) | - devm_kzalloc + devm_kcalloc (HANDLE, - sizeof(TYPE) * COUNT_CONST + COUNT_CONST, sizeof(TYPE) , ...) | - devm_kzalloc + devm_kcalloc (HANDLE, - sizeof(THING) * (COUNT_ID) + COUNT_ID, sizeof(THING) , ...) | - devm_kzalloc + devm_kcalloc (HANDLE, - sizeof(THING) * COUNT_ID + COUNT_ID, sizeof(THING) , ...) | - devm_kzalloc + devm_kcalloc (HANDLE, - sizeof(THING) * (COUNT_CONST) + COUNT_CONST, sizeof(THING) , ...) | - devm_kzalloc + devm_kcalloc (HANDLE, - sizeof(THING) * COUNT_CONST + COUNT_CONST, sizeof(THING) , ...) ) // 2-factor product, only identifiers. @@ expression HANDLE; identifier SIZE, COUNT; @@ - devm_kzalloc + devm_kcalloc (HANDLE, - SIZE * COUNT + COUNT, SIZE , ...) // 3-factor product with 1 sizeof(type) or sizeof(expression), with // redundant parens removed. @@ expression HANDLE; expression THING; identifier STRIDE, COUNT; type TYPE; @@ ( devm_kzalloc(HANDLE, - sizeof(TYPE) * (COUNT) * (STRIDE) + array3_size(COUNT, STRIDE, sizeof(TYPE)) , ...) | devm_kzalloc(HANDLE, - sizeof(TYPE) * (COUNT) * STRIDE + array3_size(COUNT, STRIDE, sizeof(TYPE)) , ...) | devm_kzalloc(HANDLE, - sizeof(TYPE) * COUNT * (STRIDE) + array3_size(COUNT, STRIDE, sizeof(TYPE)) , ...) | devm_kzalloc(HANDLE, - sizeof(TYPE) * COUNT * STRIDE + array3_size(COUNT, STRIDE, sizeof(TYPE)) , ...) | devm_kzalloc(HANDLE, - sizeof(THING) * (COUNT) * (STRIDE) + array3_size(COUNT, STRIDE, sizeof(THING)) , ...) | devm_kzalloc(HANDLE, - sizeof(THING) * (COUNT) * STRIDE + array3_size(COUNT, STRIDE, sizeof(THING)) , ...) | devm_kzalloc(HANDLE, - sizeof(THING) * COUNT * (STRIDE) + array3_size(COUNT, STRIDE, sizeof(THING)) , ...) | devm_kzalloc(HANDLE, - sizeof(THING) * COUNT * STRIDE + array3_size(COUNT, STRIDE, sizeof(THING)) , ...) ) // 3-factor product with 2 sizeof(variable), with redundant parens removed. @@ expression HANDLE; expression THING1, THING2; identifier COUNT; type TYPE1, TYPE2; @@ ( devm_kzalloc(HANDLE, - sizeof(TYPE1) * sizeof(TYPE2) * COUNT + array3_size(COUNT, sizeof(TYPE1), sizeof(TYPE2)) , ...) | devm_kzalloc(HANDLE, - sizeof(TYPE1) * sizeof(THING2) * (COUNT) + array3_size(COUNT, sizeof(TYPE1), sizeof(TYPE2)) , ...) | devm_kzalloc(HANDLE, - sizeof(THING1) * sizeof(THING2) * COUNT + array3_size(COUNT, sizeof(THING1), sizeof(THING2)) , ...) | devm_kzalloc(HANDLE, - sizeof(THING1) * sizeof(THING2) * (COUNT) + array3_size(COUNT, sizeof(THING1), sizeof(THING2)) , ...) | devm_kzalloc(HANDLE, - sizeof(TYPE1) * sizeof(THING2) * COUNT + array3_size(COUNT, sizeof(TYPE1), sizeof(THING2)) , ...) | devm_kzalloc(HANDLE, - sizeof(TYPE1) * sizeof(THING2) * (COUNT) + array3_size(COUNT, sizeof(TYPE1), sizeof(THING2)) , ...) ) // 3-factor product, only identifiers, with redundant parens removed. @@ expression HANDLE; identifier STRIDE, SIZE, COUNT; @@ ( devm_kzalloc(HANDLE, - (COUNT) * STRIDE * SIZE + array3_size(COUNT, STRIDE, SIZE) , ...) | devm_kzalloc(HANDLE, - COUNT * (STRIDE) * SIZE + array3_size(COUNT, STRIDE, SIZE) , ...) | devm_kzalloc(HANDLE, - COUNT * STRIDE * (SIZE) + array3_size(COUNT, STRIDE, SIZE) , ...) | devm_kzalloc(HANDLE, - (COUNT) * (STRIDE) * SIZE + array3_size(COUNT, STRIDE, SIZE) , ...) | devm_kzalloc(HANDLE, - COUNT * (STRIDE) * (SIZE) + array3_size(COUNT, STRIDE, SIZE) , ...) | devm_kzalloc(HANDLE, - (COUNT) * STRIDE * (SIZE) + array3_size(COUNT, STRIDE, SIZE) , ...) | devm_kzalloc(HANDLE, - (COUNT) * (STRIDE) * (SIZE) + array3_size(COUNT, STRIDE, SIZE) , ...) | devm_kzalloc(HANDLE, - COUNT * STRIDE * SIZE + array3_size(COUNT, STRIDE, SIZE) , ...) ) // Any remaining multi-factor products, first at least 3-factor products, // when they're not all constants... @@ expression HANDLE; expression E1, E2, E3; constant C1, C2, C3; @@ ( devm_kzalloc(HANDLE, C1 * C2 * C3, ...) | devm_kzalloc(HANDLE, - (E1) * E2 * E3 + array3_size(E1, E2, E3) , ...) | devm_kzalloc(HANDLE, - (E1) * (E2) * E3 + array3_size(E1, E2, E3) , ...) | devm_kzalloc(HANDLE, - (E1) * (E2) * (E3) + array3_size(E1, E2, E3) , ...) | devm_kzalloc(HANDLE, - E1 * E2 * E3 + array3_size(E1, E2, E3) , ...) ) // And then all remaining 2 factors products when they're not all constants, // keeping sizeof() as the second factor argument. @@ expression HANDLE; expression THING, E1, E2; type TYPE; constant C1, C2, C3; @@ ( devm_kzalloc(HANDLE, sizeof(THING) * C2, ...) | devm_kzalloc(HANDLE, sizeof(TYPE) * C2, ...) | devm_kzalloc(HANDLE, C1 * C2 * C3, ...) | devm_kzalloc(HANDLE, C1 * C2, ...) | - devm_kzalloc + devm_kcalloc (HANDLE, - sizeof(TYPE) * (E2) + E2, sizeof(TYPE) , ...) | - devm_kzalloc + devm_kcalloc (HANDLE, - sizeof(TYPE) * E2 + E2, sizeof(TYPE) , ...) | - devm_kzalloc + devm_kcalloc (HANDLE, - sizeof(THING) * (E2) + E2, sizeof(THING) , ...) | - devm_kzalloc + devm_kcalloc (HANDLE, - sizeof(THING) * E2 + E2, sizeof(THING) , ...) | - devm_kzalloc + devm_kcalloc (HANDLE, - (E1) * E2 + E1, E2 , ...) | - devm_kzalloc + devm_kcalloc (HANDLE, - (E1) * (E2) + E1, E2 , ...) | - devm_kzalloc + devm_kcalloc (HANDLE, - E1 * E2 + E1, E2 , ...) ) Signed-off-by: Kees Cook <keescook@chromium.org>
2018-06-13 05:07:58 +08:00
pin_names = devm_kcalloc(&pdev->dev, PINS_COUNT, name_len,
GFP_KERNEL);
if (!pin_names)
return -ENOMEM;
for (i = 0; i < PIN_COLLECTIONS; i++) {
for (j = 0; j < PINS_PER_COLLECTION; j++) {
int pin_id = i*PINS_PER_COLLECTION + j;
char *name = &pin_names[pin_id * name_len];
snprintf(name, name_len, "GP_%c%c", 'A'+i, '0'+j);
pins[pin_id].number = pin_id;
pins[pin_id].name = name;
pmap->pin_names[pin_id] = name;
}
}
pctl_desc = devm_kzalloc(&pdev->dev, sizeof(*pctl_desc), GFP_KERNEL);
if (!pctl_desc)
return -ENOMEM;
pctl_desc->name = DRIVER_NAME,
pctl_desc->owner = THIS_MODULE,
pctl_desc->pctlops = &dc_pinctrl_ops,
pctl_desc->pmxops = &dc_pmxops,
pctl_desc->npins = PINS_COUNT;
pctl_desc->pins = pins;
pmap->desc = pctl_desc;
pmap->dev = &pdev->dev;
pmap->pctl = devm_pinctrl_register(&pdev->dev, pctl_desc, pmap);
if (IS_ERR(pmap->pctl)) {
dev_err(&pdev->dev, "pinctrl driver registration failed\n");
return PTR_ERR(pmap->pctl);
}
return dc_gpiochip_add(pmap);
}
static const struct of_device_id dc_pinctrl_ids[] = {
{ .compatible = "cnxt,cx92755-pinctrl" },
{ /* sentinel */ }
};
static struct platform_driver dc_pinctrl_driver = {
.driver = {
.name = DRIVER_NAME,
.of_match_table = dc_pinctrl_ids,
.suppress_bind_attrs = true,
},
.probe = dc_pinctrl_probe,
};
builtin_platform_driver(dc_pinctrl_driver);