mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/chenhuacai/linux-loongson
synced 2025-10-31 12:39:23 +00:00
70f82f2c59
Remove the cpu subtype cpp macros in favor of runtime detection, to improve compile coverage of the alchemy common code. (Increases kernel size by 700 bytes). Signed-off-by: Manuel Lauss <manuel.lauss@gmail.com> Cc: linux-mips@linux-mips.org Patchwork: http://patchwork.linux-mips.org/patch/699/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
127 lines
4.0 KiB
C
127 lines
4.0 KiB
C
/*
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* Copyright (C) 2007-2009, OpenWrt.org, Florian Fainelli <florian@openwrt.org>
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* GPIOLIB support for Au1000, Au1500, Au1100, Au1550 and Au12x0.
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License as published by the
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* Free Software Foundation; either version 2 of the License, or (at your
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* option) any later version.
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*
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* THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED
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* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN
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* NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
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* USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
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* ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program; if not, write to the Free Software Foundation, Inc.,
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* 675 Mass Ave, Cambridge, MA 02139, USA.
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*
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* Notes :
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* au1000 SoC have only one GPIO block : GPIO1
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* Au1100, Au15x0, Au12x0 have a second one : GPIO2
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*/
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#include <linux/kernel.h>
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#include <linux/module.h>
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#include <linux/types.h>
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#include <linux/platform_device.h>
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#include <linux/gpio.h>
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#include <asm/mach-au1x00/au1000.h>
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#include <asm/mach-au1x00/gpio.h>
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static int gpio2_get(struct gpio_chip *chip, unsigned offset)
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{
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return alchemy_gpio2_get_value(offset + ALCHEMY_GPIO2_BASE);
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}
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static void gpio2_set(struct gpio_chip *chip, unsigned offset, int value)
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{
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alchemy_gpio2_set_value(offset + ALCHEMY_GPIO2_BASE, value);
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}
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static int gpio2_direction_input(struct gpio_chip *chip, unsigned offset)
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{
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return alchemy_gpio2_direction_input(offset + ALCHEMY_GPIO2_BASE);
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}
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static int gpio2_direction_output(struct gpio_chip *chip, unsigned offset,
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int value)
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{
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return alchemy_gpio2_direction_output(offset + ALCHEMY_GPIO2_BASE,
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value);
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}
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static int gpio2_to_irq(struct gpio_chip *chip, unsigned offset)
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{
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return alchemy_gpio2_to_irq(offset + ALCHEMY_GPIO2_BASE);
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}
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static int gpio1_get(struct gpio_chip *chip, unsigned offset)
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{
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return alchemy_gpio1_get_value(offset + ALCHEMY_GPIO1_BASE);
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}
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static void gpio1_set(struct gpio_chip *chip,
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unsigned offset, int value)
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{
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alchemy_gpio1_set_value(offset + ALCHEMY_GPIO1_BASE, value);
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}
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static int gpio1_direction_input(struct gpio_chip *chip, unsigned offset)
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{
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return alchemy_gpio1_direction_input(offset + ALCHEMY_GPIO1_BASE);
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}
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static int gpio1_direction_output(struct gpio_chip *chip,
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unsigned offset, int value)
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{
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return alchemy_gpio1_direction_output(offset + ALCHEMY_GPIO1_BASE,
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value);
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}
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static int gpio1_to_irq(struct gpio_chip *chip, unsigned offset)
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{
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return alchemy_gpio1_to_irq(offset + ALCHEMY_GPIO1_BASE);
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}
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struct gpio_chip alchemy_gpio_chip[] = {
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[0] = {
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.label = "alchemy-gpio1",
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.direction_input = gpio1_direction_input,
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.direction_output = gpio1_direction_output,
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.get = gpio1_get,
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.set = gpio1_set,
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.to_irq = gpio1_to_irq,
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.base = ALCHEMY_GPIO1_BASE,
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.ngpio = ALCHEMY_GPIO1_NUM,
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},
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[1] = {
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.label = "alchemy-gpio2",
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.direction_input = gpio2_direction_input,
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.direction_output = gpio2_direction_output,
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.get = gpio2_get,
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.set = gpio2_set,
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.to_irq = gpio2_to_irq,
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.base = ALCHEMY_GPIO2_BASE,
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.ngpio = ALCHEMY_GPIO2_NUM,
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},
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};
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static int __init alchemy_gpiolib_init(void)
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{
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gpiochip_add(&alchemy_gpio_chip[0]);
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if (alchemy_get_cputype() != ALCHEMY_CPU_AU1000)
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gpiochip_add(&alchemy_gpio_chip[1]);
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return 0;
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}
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arch_initcall(alchemy_gpiolib_init);
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