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linux/drivers/pinctrl/freescale/pinctrl-imx8ulp.c
Fabio Estevam af0ca06f87 pinctrl: imx8ulp: Initialize pin_reg 
The initialization of pin_reg is missing, causing the following build
warning:

drivers/pinctrl/freescale/pinctrl-imx8ulp.c:228:35: warning: 'pin_reg' is used uninitialized in this function [-Wuninitialized]

Initialize pin_reg the same way as it is done on vf610 and imx7ulp
to fix the problem.

Fixes: 16b343e8e0 ("pinctrl: imx8ulp: Add pinctrl driver support")
Reported-by: kernel test robot <lkp@intel.com>
Signed-off-by: Fabio Estevam <festevam@gmail.com>
Link: https://lore.kernel.org/r/20210723203242.88845-1-festevam@gmail.com
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2021-07-23 22:52:47 +02:00

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// SPDX-License-Identifier: GPL-2.0
/*
* Copyright 2021 NXP
*/
#include <linux/err.h>
#include <linux/init.h>
#include <linux/io.h>
#include <linux/module.h>
#include <linux/of.h>
#include <linux/of_device.h>
#include <linux/pinctrl/pinctrl.h>
#include "pinctrl-imx.h"
enum imx8ulp_pads {
IMX8ULP_PAD_PTD0 = 0,
IMX8ULP_PAD_PTD1,
IMX8ULP_PAD_PTD2,
IMX8ULP_PAD_PTD3,
IMX8ULP_PAD_PTD4,
IMX8ULP_PAD_PTD5,
IMX8ULP_PAD_PTD6,
IMX8ULP_PAD_PTD7,
IMX8ULP_PAD_PTD8,
IMX8ULP_PAD_PTD9,
IMX8ULP_PAD_PTD10,
IMX8ULP_PAD_PTD11,
IMX8ULP_PAD_PTD12,
IMX8ULP_PAD_PTD13,
IMX8ULP_PAD_PTD14,
IMX8ULP_PAD_PTD15,
IMX8ULP_PAD_PTD16,
IMX8ULP_PAD_PTD17,
IMX8ULP_PAD_PTD18,
IMX8ULP_PAD_PTD19,
IMX8ULP_PAD_PTD20,
IMX8ULP_PAD_PTD21,
IMX8ULP_PAD_PTD22,
IMX8ULP_PAD_PTD23,
IMX8ULP_PAD_RESERVE0,
IMX8ULP_PAD_RESERVE1,
IMX8ULP_PAD_RESERVE2,
IMX8ULP_PAD_RESERVE3,
IMX8ULP_PAD_RESERVE4,
IMX8ULP_PAD_RESERVE5,
IMX8ULP_PAD_RESERVE6,
IMX8ULP_PAD_RESERVE7,
IMX8ULP_PAD_PTE0,
IMX8ULP_PAD_PTE1,
IMX8ULP_PAD_PTE2,
IMX8ULP_PAD_PTE3,
IMX8ULP_PAD_PTE4,
IMX8ULP_PAD_PTE5,
IMX8ULP_PAD_PTE6,
IMX8ULP_PAD_PTE7,
IMX8ULP_PAD_PTE8,
IMX8ULP_PAD_PTE9,
IMX8ULP_PAD_PTE10,
IMX8ULP_PAD_PTE11,
IMX8ULP_PAD_PTE12,
IMX8ULP_PAD_PTE13,
IMX8ULP_PAD_PTE14,
IMX8ULP_PAD_PTE15,
IMX8ULP_PAD_PTE16,
IMX8ULP_PAD_PTE17,
IMX8ULP_PAD_PTE18,
IMX8ULP_PAD_PTE19,
IMX8ULP_PAD_PTE20,
IMX8ULP_PAD_PTE21,
IMX8ULP_PAD_PTE22,
IMX8ULP_PAD_PTE23,
IMX8ULP_PAD_RESERVE8,
IMX8ULP_PAD_RESERVE9,
IMX8ULP_PAD_RESERVE10,
IMX8ULP_PAD_RESERVE11,
IMX8ULP_PAD_RESERVE12,
IMX8ULP_PAD_RESERVE13,
IMX8ULP_PAD_RESERVE14,
IMX8ULP_PAD_RESERVE15,
IMX8ULP_PAD_PTF0,
IMX8ULP_PAD_PTF1,
IMX8ULP_PAD_PTF2,
IMX8ULP_PAD_PTF3,
IMX8ULP_PAD_PTF4,
IMX8ULP_PAD_PTF5,
IMX8ULP_PAD_PTF6,
IMX8ULP_PAD_PTF7,
IMX8ULP_PAD_PTF8,
IMX8ULP_PAD_PTF9,
IMX8ULP_PAD_PTF10,
IMX8ULP_PAD_PTF11,
IMX8ULP_PAD_PTF12,
IMX8ULP_PAD_PTF13,
IMX8ULP_PAD_PTF14,
IMX8ULP_PAD_PTF15,
IMX8ULP_PAD_PTF16,
IMX8ULP_PAD_PTF17,
IMX8ULP_PAD_PTF18,
IMX8ULP_PAD_PTF19,
IMX8ULP_PAD_PTF20,
IMX8ULP_PAD_PTF21,
IMX8ULP_PAD_PTF22,
IMX8ULP_PAD_PTF23,
IMX8ULP_PAD_PTF24,
IMX8ULP_PAD_PTF25,
IMX8ULP_PAD_PTF26,
IMX8ULP_PAD_PTF27,
IMX8ULP_PAD_PTF28,
IMX8ULP_PAD_PTF29,
IMX8ULP_PAD_PTF30,
IMX8ULP_PAD_PTF31,
};
/* Pad names for the pinmux subsystem */
static const struct pinctrl_pin_desc imx8ulp_pinctrl_pads[] = {
IMX_PINCTRL_PIN(IMX8ULP_PAD_PTD0),
IMX_PINCTRL_PIN(IMX8ULP_PAD_PTD1),
IMX_PINCTRL_PIN(IMX8ULP_PAD_PTD2),
IMX_PINCTRL_PIN(IMX8ULP_PAD_PTD3),
IMX_PINCTRL_PIN(IMX8ULP_PAD_PTD4),
IMX_PINCTRL_PIN(IMX8ULP_PAD_PTD5),
IMX_PINCTRL_PIN(IMX8ULP_PAD_PTD6),
IMX_PINCTRL_PIN(IMX8ULP_PAD_PTD7),
IMX_PINCTRL_PIN(IMX8ULP_PAD_PTD8),
IMX_PINCTRL_PIN(IMX8ULP_PAD_PTD9),
IMX_PINCTRL_PIN(IMX8ULP_PAD_PTD10),
IMX_PINCTRL_PIN(IMX8ULP_PAD_PTD11),
IMX_PINCTRL_PIN(IMX8ULP_PAD_PTD12),
IMX_PINCTRL_PIN(IMX8ULP_PAD_PTD13),
IMX_PINCTRL_PIN(IMX8ULP_PAD_PTD14),
IMX_PINCTRL_PIN(IMX8ULP_PAD_PTD15),
IMX_PINCTRL_PIN(IMX8ULP_PAD_PTD16),
IMX_PINCTRL_PIN(IMX8ULP_PAD_PTD17),
IMX_PINCTRL_PIN(IMX8ULP_PAD_PTD18),
IMX_PINCTRL_PIN(IMX8ULP_PAD_PTD19),
IMX_PINCTRL_PIN(IMX8ULP_PAD_PTD20),
IMX_PINCTRL_PIN(IMX8ULP_PAD_PTD21),
IMX_PINCTRL_PIN(IMX8ULP_PAD_PTD22),
IMX_PINCTRL_PIN(IMX8ULP_PAD_PTD23),
IMX_PINCTRL_PIN(IMX8ULP_PAD_RESERVE0),
IMX_PINCTRL_PIN(IMX8ULP_PAD_RESERVE1),
IMX_PINCTRL_PIN(IMX8ULP_PAD_RESERVE2),
IMX_PINCTRL_PIN(IMX8ULP_PAD_RESERVE3),
IMX_PINCTRL_PIN(IMX8ULP_PAD_RESERVE4),
IMX_PINCTRL_PIN(IMX8ULP_PAD_RESERVE5),
IMX_PINCTRL_PIN(IMX8ULP_PAD_RESERVE6),
IMX_PINCTRL_PIN(IMX8ULP_PAD_RESERVE7),
IMX_PINCTRL_PIN(IMX8ULP_PAD_PTE0),
IMX_PINCTRL_PIN(IMX8ULP_PAD_PTE1),
IMX_PINCTRL_PIN(IMX8ULP_PAD_PTE2),
IMX_PINCTRL_PIN(IMX8ULP_PAD_PTE3),
IMX_PINCTRL_PIN(IMX8ULP_PAD_PTE4),
IMX_PINCTRL_PIN(IMX8ULP_PAD_PTE5),
IMX_PINCTRL_PIN(IMX8ULP_PAD_PTE6),
IMX_PINCTRL_PIN(IMX8ULP_PAD_PTE7),
IMX_PINCTRL_PIN(IMX8ULP_PAD_PTE8),
IMX_PINCTRL_PIN(IMX8ULP_PAD_PTE9),
IMX_PINCTRL_PIN(IMX8ULP_PAD_PTE10),
IMX_PINCTRL_PIN(IMX8ULP_PAD_PTE11),
IMX_PINCTRL_PIN(IMX8ULP_PAD_PTE12),
IMX_PINCTRL_PIN(IMX8ULP_PAD_PTE13),
IMX_PINCTRL_PIN(IMX8ULP_PAD_PTE14),
IMX_PINCTRL_PIN(IMX8ULP_PAD_PTE15),
IMX_PINCTRL_PIN(IMX8ULP_PAD_PTE16),
IMX_PINCTRL_PIN(IMX8ULP_PAD_PTE17),
IMX_PINCTRL_PIN(IMX8ULP_PAD_PTE18),
IMX_PINCTRL_PIN(IMX8ULP_PAD_PTE19),
IMX_PINCTRL_PIN(IMX8ULP_PAD_PTE20),
IMX_PINCTRL_PIN(IMX8ULP_PAD_PTE21),
IMX_PINCTRL_PIN(IMX8ULP_PAD_PTE22),
IMX_PINCTRL_PIN(IMX8ULP_PAD_PTE23),
IMX_PINCTRL_PIN(IMX8ULP_PAD_RESERVE8),
IMX_PINCTRL_PIN(IMX8ULP_PAD_RESERVE9),
IMX_PINCTRL_PIN(IMX8ULP_PAD_RESERVE10),
IMX_PINCTRL_PIN(IMX8ULP_PAD_RESERVE11),
IMX_PINCTRL_PIN(IMX8ULP_PAD_RESERVE12),
IMX_PINCTRL_PIN(IMX8ULP_PAD_RESERVE13),
IMX_PINCTRL_PIN(IMX8ULP_PAD_RESERVE14),
IMX_PINCTRL_PIN(IMX8ULP_PAD_RESERVE15),
IMX_PINCTRL_PIN(IMX8ULP_PAD_PTF0),
IMX_PINCTRL_PIN(IMX8ULP_PAD_PTF1),
IMX_PINCTRL_PIN(IMX8ULP_PAD_PTF2),
IMX_PINCTRL_PIN(IMX8ULP_PAD_PTF3),
IMX_PINCTRL_PIN(IMX8ULP_PAD_PTF4),
IMX_PINCTRL_PIN(IMX8ULP_PAD_PTF5),
IMX_PINCTRL_PIN(IMX8ULP_PAD_PTF6),
IMX_PINCTRL_PIN(IMX8ULP_PAD_PTF7),
IMX_PINCTRL_PIN(IMX8ULP_PAD_PTF8),
IMX_PINCTRL_PIN(IMX8ULP_PAD_PTF9),
IMX_PINCTRL_PIN(IMX8ULP_PAD_PTF10),
IMX_PINCTRL_PIN(IMX8ULP_PAD_PTF11),
IMX_PINCTRL_PIN(IMX8ULP_PAD_PTF12),
IMX_PINCTRL_PIN(IMX8ULP_PAD_PTF13),
IMX_PINCTRL_PIN(IMX8ULP_PAD_PTF14),
IMX_PINCTRL_PIN(IMX8ULP_PAD_PTF15),
IMX_PINCTRL_PIN(IMX8ULP_PAD_PTF16),
IMX_PINCTRL_PIN(IMX8ULP_PAD_PTF17),
IMX_PINCTRL_PIN(IMX8ULP_PAD_PTF18),
IMX_PINCTRL_PIN(IMX8ULP_PAD_PTF19),
IMX_PINCTRL_PIN(IMX8ULP_PAD_PTF20),
IMX_PINCTRL_PIN(IMX8ULP_PAD_PTF21),
IMX_PINCTRL_PIN(IMX8ULP_PAD_PTF22),
IMX_PINCTRL_PIN(IMX8ULP_PAD_PTF23),
IMX_PINCTRL_PIN(IMX8ULP_PAD_PTF24),
IMX_PINCTRL_PIN(IMX8ULP_PAD_PTF25),
IMX_PINCTRL_PIN(IMX8ULP_PAD_PTF26),
IMX_PINCTRL_PIN(IMX8ULP_PAD_PTF27),
IMX_PINCTRL_PIN(IMX8ULP_PAD_PTF28),
IMX_PINCTRL_PIN(IMX8ULP_PAD_PTF29),
IMX_PINCTRL_PIN(IMX8ULP_PAD_PTF30),
IMX_PINCTRL_PIN(IMX8ULP_PAD_PTF31),
};
#define BM_OBE_ENABLED BIT(17)
#define BM_IBE_ENABLED BIT(16)
#define BM_MUX_MODE 0xf00
#define BP_MUX_MODE 8
static int imx8ulp_pmx_gpio_set_direction(struct pinctrl_dev *pctldev,
struct pinctrl_gpio_range *range,
unsigned offset, bool input)
{
struct imx_pinctrl *ipctl = pinctrl_dev_get_drvdata(pctldev);
const struct imx_pin_reg *pin_reg;
u32 reg;
pin_reg = &ipctl->pin_regs[offset];
if (pin_reg->mux_reg == -1)
return -EINVAL;
reg = readl(ipctl->base + pin_reg->mux_reg);
if (input)
reg = (reg & ~BM_OBE_ENABLED) | BM_IBE_ENABLED;
else
reg = (reg & ~BM_IBE_ENABLED) | BM_OBE_ENABLED;
writel(reg, ipctl->base + pin_reg->mux_reg);
return 0;
}
static const struct imx_pinctrl_soc_info imx8ulp_pinctrl_info = {
.pins = imx8ulp_pinctrl_pads,
.npins = ARRAY_SIZE(imx8ulp_pinctrl_pads),
.flags = ZERO_OFFSET_VALID | SHARE_MUX_CONF_REG,
.gpio_set_direction = imx8ulp_pmx_gpio_set_direction,
.mux_mask = BM_MUX_MODE,
.mux_shift = BP_MUX_MODE,
};
static const struct of_device_id imx8ulp_pinctrl_of_match[] = {
{ .compatible = "fsl,imx8ulp-iomuxc1", },
{ /* sentinel */ }
};
static int imx8ulp_pinctrl_probe(struct platform_device *pdev)
{
return imx_pinctrl_probe(pdev, &imx8ulp_pinctrl_info);
}
static struct platform_driver imx8ulp_pinctrl_driver = {
.driver = {
.name = "imx8ulp-pinctrl",
.of_match_table = imx8ulp_pinctrl_of_match,
.suppress_bind_attrs = true,
},
.probe = imx8ulp_pinctrl_probe,
};
static int __init imx8ulp_pinctrl_init(void)
{
return platform_driver_register(&imx8ulp_pinctrl_driver);
}
arch_initcall(imx8ulp_pinctrl_init);
MODULE_AUTHOR("Jacky Bai <ping.bai@nxp.com>");
MODULE_DESCRIPTION("NXP i.MX8ULP pinctrl driver");
MODULE_LICENSE("GPL v2");
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