+++ /dev/null
-From cc99dca188bb63ba390008e2f7fa62d0300233e0 Mon Sep 17 00:00:00 2001
-From: Jonas Gorski <jogo@openwrt.org>
-Date: Fri, 20 Feb 2015 23:58:54 +0100
-Subject: [PATCH 2/6] MIPS: BCM63XX: switch to new gpio driver
-
-Signed-off-by: Jonas Gorski <jogo@openwrt.org>
----
- arch/mips/bcm63xx/boards/board_common.c | 2 +
- arch/mips/bcm63xx/gpio.c | 147 +++++++------------------------
- arch/mips/bcm63xx/setup.c | 3 -
- 3 files changed, 33 insertions(+), 119 deletions(-)
-
---- a/arch/mips/bcm63xx/boards/board_common.c
-+++ b/arch/mips/bcm63xx/boards/board_common.c
-@@ -204,6 +204,8 @@ int __init board_register_devices(void)
- }
- #endif
-
-+ bcm63xx_gpio_init();
-+
- if (board.has_uart0)
- bcm63xx_uart_register(0);
-
---- a/arch/mips/bcm63xx/gpio.c
-+++ b/arch/mips/bcm63xx/gpio.c
-@@ -5,147 +5,62 @@
- *
- * Copyright (C) 2008 Maxime Bizon <mbizon@freebox.fr>
- * Copyright (C) 2008-2011 Florian Fainelli <florian@openwrt.org>
-+ * Copyright (C) Jonas Gorski <jogo@openwrt.org>
- */
-
- #include <linux/kernel.h>
--#include <linux/module.h>
--#include <linux/spinlock.h>
- #include <linux/platform_device.h>
-+#include <linux/basic_mmio_gpio.h>
- #include <linux/gpio.h>
-
- #include <bcm63xx_cpu.h>
- #include <bcm63xx_gpio.h>
--#include <bcm63xx_io.h>
- #include <bcm63xx_regs.h>
-
--static u32 gpio_out_low_reg;
--
--static void bcm63xx_gpio_out_low_reg_init(void)
-+static void __init bcm63xx_gpio_init_one(int id, int dir, int data, int ngpio)
- {
-- switch (bcm63xx_get_cpu_id()) {
-- case BCM6345_CPU_ID:
-- gpio_out_low_reg = GPIO_DATA_LO_REG_6345;
-- break;
-- default:
-- gpio_out_low_reg = GPIO_DATA_LO_REG;
-- break;
-- }
--}
--
--static DEFINE_SPINLOCK(bcm63xx_gpio_lock);
--static u32 gpio_out_low, gpio_out_high;
-+ struct resource res[2];
-+ struct bgpio_pdata pdata;
-
--static void bcm63xx_gpio_set(struct gpio_chip *chip,
-- unsigned gpio, int val)
--{
-- u32 reg;
-- u32 mask;
-- u32 *v;
-- unsigned long flags;
--
-- if (gpio >= chip->ngpio)
-- BUG();
--
-- if (gpio < 32) {
-- reg = gpio_out_low_reg;
-- mask = 1 << gpio;
-- v = &gpio_out_low;
-- } else {
-- reg = GPIO_DATA_HI_REG;
-- mask = 1 << (gpio - 32);
-- v = &gpio_out_high;
-- }
--
-- spin_lock_irqsave(&bcm63xx_gpio_lock, flags);
-- if (val)
-- *v |= mask;
-- else
-- *v &= ~mask;
-- bcm_gpio_writel(*v, reg);
-- spin_unlock_irqrestore(&bcm63xx_gpio_lock, flags);
--}
-+ memset(res, 0, sizeof(res));
-+ memset(&pdata, 0, sizeof(pdata));
-
--static int bcm63xx_gpio_get(struct gpio_chip *chip, unsigned gpio)
--{
-- u32 reg;
-- u32 mask;
-+ res[0].flags = IORESOURCE_MEM;
-+ res[0].start = bcm63xx_regset_address(RSET_GPIO);
-+ res[0].start += dir;
-
-- if (gpio >= chip->ngpio)
-- BUG();
-+ res[0].end = res[0].start + 3;
-
-- if (gpio < 32) {
-- reg = gpio_out_low_reg;
-- mask = 1 << gpio;
-- } else {
-- reg = GPIO_DATA_HI_REG;
-- mask = 1 << (gpio - 32);
-- }
-+ res[1].flags = IORESOURCE_MEM;
-+ res[1].start = bcm63xx_regset_address(RSET_GPIO);
-+ res[1].start += data;
-
-- return !!(bcm_gpio_readl(reg) & mask);
--}
-+ res[1].end = res[1].start + 3;
-
--static int bcm63xx_gpio_set_direction(struct gpio_chip *chip,
-- unsigned gpio, int dir)
--{
-- u32 reg;
-- u32 mask;
-- u32 tmp;
-- unsigned long flags;
--
-- if (gpio >= chip->ngpio)
-- BUG();
--
-- if (gpio < 32) {
-- reg = GPIO_CTL_LO_REG;
-- mask = 1 << gpio;
-- } else {
-- reg = GPIO_CTL_HI_REG;
-- mask = 1 << (gpio - 32);
-- }
--
-- spin_lock_irqsave(&bcm63xx_gpio_lock, flags);
-- tmp = bcm_gpio_readl(reg);
-- if (dir == BCM63XX_GPIO_DIR_IN)
-- tmp &= ~mask;
-- else
-- tmp |= mask;
-- bcm_gpio_writel(tmp, reg);
-- spin_unlock_irqrestore(&bcm63xx_gpio_lock, flags);
-+ pdata.base = id * 32;
-+ pdata.ngpio = ngpio;
-
-- return 0;
-+ platform_device_register_resndata(NULL, "bcm63xx-gpio", id, res, 2,
-+ &pdata, sizeof(pdata));
- }
-
--static int bcm63xx_gpio_direction_input(struct gpio_chip *chip, unsigned gpio)
-+int __init bcm63xx_gpio_init(void)
- {
-- return bcm63xx_gpio_set_direction(chip, gpio, BCM63XX_GPIO_DIR_IN);
--}
-+ int ngpio = bcm63xx_gpio_count();
-+ int data_low_reg;
-
--static int bcm63xx_gpio_direction_output(struct gpio_chip *chip,
-- unsigned gpio, int value)
--{
-- bcm63xx_gpio_set(chip, gpio, value);
-- return bcm63xx_gpio_set_direction(chip, gpio, BCM63XX_GPIO_DIR_OUT);
--}
-+ if (BCMCPU_IS_6345())
-+ data_low_reg = GPIO_DATA_LO_REG_6345;
-+ else
-+ data_low_reg = GPIO_DATA_LO_REG;
-
-+ bcm63xx_gpio_init_one(0, GPIO_CTL_LO_REG, data_low_reg, min(ngpio, 32));
-
--static struct gpio_chip bcm63xx_gpio_chip = {
-- .label = "bcm63xx-gpio",
-- .direction_input = bcm63xx_gpio_direction_input,
-- .direction_output = bcm63xx_gpio_direction_output,
-- .get = bcm63xx_gpio_get,
-- .set = bcm63xx_gpio_set,
-- .base = 0,
--};
-+ if (ngpio <= 32)
-+ return 0;
-
--int __init bcm63xx_gpio_init(void)
--{
-- bcm63xx_gpio_out_low_reg_init();
-+ bcm63xx_gpio_init_one(1, GPIO_CTL_HI_REG, GPIO_DATA_HI_REG, ngpio - 32);
-
-- gpio_out_low = bcm_gpio_readl(gpio_out_low_reg);
-- if (!BCMCPU_IS_6345())
-- gpio_out_high = bcm_gpio_readl(GPIO_DATA_HI_REG);
-- bcm63xx_gpio_chip.ngpio = bcm63xx_gpio_count();
-- pr_info("registering %d GPIOs\n", bcm63xx_gpio_chip.ngpio);
-+ return 0;
-
-- return gpiochip_add(&bcm63xx_gpio_chip);
- }
---- a/arch/mips/bcm63xx/setup.c
-+++ b/arch/mips/bcm63xx/setup.c
-@@ -164,9 +164,6 @@ void __init plat_mem_setup(void)
-
- int __init bcm63xx_register_devices(void)
- {
-- /* register gpiochip */
-- bcm63xx_gpio_init();
--
- return board_register_devices();
- }
-
projects / openwrt.git / blobdiff