diff options
Diffstat (limited to 'drivers/gpio/gpio-xtensa.c')
| -rw-r--r-- | drivers/gpio/gpio-xtensa.c | 29 |
1 files changed, 10 insertions, 19 deletions
diff --git a/drivers/gpio/gpio-xtensa.c b/drivers/gpio/gpio-xtensa.c index f16c0427952e..4418947a10e5 100644 --- a/drivers/gpio/gpio-xtensa.c +++ b/drivers/gpio/gpio-xtensa.c @@ -1,11 +1,8 @@ +// SPDX-License-Identifier: GPL-2.0 /* * Copyright (C) 2013 TangoTec Ltd. * Author: Baruch Siach <baruch@tkos.co.il> * - * 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 - * published by the Free Software Foundation. - * * Driver for the Xtensa LX4 GPIO32 Option * * Documentation: Xtensa LX4 Microprocessor Data Book, Section 2.22 @@ -30,7 +27,7 @@ #include <linux/err.h> #include <linux/module.h> -#include <linux/gpio.h> +#include <linux/gpio/driver.h> #include <linux/bitops.h> #include <linux/platform_device.h> @@ -47,15 +44,14 @@ static inline unsigned long enable_cp(unsigned long *cpenable) unsigned long flags; local_irq_save(flags); - RSR_CPENABLE(*cpenable); - WSR_CPENABLE(*cpenable | BIT(XCHAL_CP_ID_XTIOP)); - + *cpenable = xtensa_get_sr(cpenable); + xtensa_set_sr(*cpenable | BIT(XCHAL_CP_ID_XTIOP), cpenable); return flags; } static inline void disable_cp(unsigned long flags, unsigned long cpenable) { - WSR_CPENABLE(cpenable); + xtensa_set_sr(cpenable, cpenable); local_irq_restore(flags); } @@ -75,7 +71,7 @@ static inline void disable_cp(unsigned long flags, unsigned long cpenable) static int xtensa_impwire_get_direction(struct gpio_chip *gc, unsigned offset) { - return 1; /* input only */ + return GPIO_LINE_DIRECTION_IN; /* input only */ } static int xtensa_impwire_get_value(struct gpio_chip *gc, unsigned offset) @@ -90,15 +86,9 @@ static int xtensa_impwire_get_value(struct gpio_chip *gc, unsigned offset) return !!(impwire & BIT(offset)); } -static void xtensa_impwire_set_value(struct gpio_chip *gc, unsigned offset, - int value) -{ - BUG(); /* output only; should never be called */ -} - static int xtensa_expstate_get_direction(struct gpio_chip *gc, unsigned offset) { - return 0; /* output only */ + return GPIO_LINE_DIRECTION_OUT; /* output only */ } static int xtensa_expstate_get_value(struct gpio_chip *gc, unsigned offset) @@ -113,7 +103,7 @@ static int xtensa_expstate_get_value(struct gpio_chip *gc, unsigned offset) return !!(expstate & BIT(offset)); } -static void xtensa_expstate_set_value(struct gpio_chip *gc, unsigned offset, +static int xtensa_expstate_set_value(struct gpio_chip *gc, unsigned int offset, int value) { unsigned long flags, saved_cpenable; @@ -124,6 +114,8 @@ static void xtensa_expstate_set_value(struct gpio_chip *gc, unsigned offset, __asm__ __volatile__("wrmsk_expstate %0, %1" :: "a" (val), "a" (mask)); disable_cp(flags, saved_cpenable); + + return 0; } static struct gpio_chip impwire_chip = { @@ -132,7 +124,6 @@ static struct gpio_chip impwire_chip = { .ngpio = 32, .get_direction = xtensa_impwire_get_direction, .get = xtensa_impwire_get_value, - .set = xtensa_impwire_set_value, }; static struct gpio_chip expstate_chip = { |