diff options
Diffstat (limited to 'arch/arm/mach-msm/gpiomux.c')
-rw-r--r-- | arch/arm/mach-msm/gpiomux.c | 111 |
1 files changed, 0 insertions, 111 deletions
diff --git a/arch/arm/mach-msm/gpiomux.c b/arch/arm/mach-msm/gpiomux.c deleted file mode 100644 index 2b8e2d2..0000000 --- a/arch/arm/mach-msm/gpiomux.c +++ /dev/null @@ -1,111 +0,0 @@ -/* Copyright (c) 2010, Code Aurora Forum. All rights reserved. - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 and - * only version 2 as published by the Free Software Foundation. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA - * 02110-1301, USA. - */ -#include <linux/module.h> -#include <linux/spinlock.h> -#include "gpiomux.h" -#include "proc_comm.h" - -static DEFINE_SPINLOCK(gpiomux_lock); - -static void __msm_gpiomux_write(unsigned gpio, gpiomux_config_t val) -{ - unsigned tlmm_config = (val & ~GPIOMUX_CTL_MASK) | - ((gpio & 0x3ff) << 4); - unsigned tlmm_disable = 0; - int rc; - - rc = msm_proc_comm(PCOM_RPC_GPIO_TLMM_CONFIG_EX, - &tlmm_config, &tlmm_disable); - if (rc) - pr_err("%s: unexpected proc_comm failure %d: %08x %08x\n", - __func__, rc, tlmm_config, tlmm_disable); -} - -int msm_gpiomux_write(unsigned gpio, - gpiomux_config_t active, - gpiomux_config_t suspended) -{ - struct msm_gpiomux_config *cfg = msm_gpiomux_configs + gpio; - unsigned long irq_flags; - gpiomux_config_t setting; - - if (gpio >= GPIOMUX_NGPIOS) - return -EINVAL; - - spin_lock_irqsave(&gpiomux_lock, irq_flags); - - if (active & GPIOMUX_VALID) - cfg->active = active; - - if (suspended & GPIOMUX_VALID) - cfg->suspended = suspended; - - setting = cfg->ref ? active : suspended; - if (setting & GPIOMUX_VALID) - __msm_gpiomux_write(gpio, setting); - - spin_unlock_irqrestore(&gpiomux_lock, irq_flags); - return 0; -} -EXPORT_SYMBOL(msm_gpiomux_write); - -int msm_gpiomux_get(unsigned gpio) -{ - struct msm_gpiomux_config *cfg = msm_gpiomux_configs + gpio; - unsigned long irq_flags; - - if (gpio >= GPIOMUX_NGPIOS) - return -EINVAL; - - spin_lock_irqsave(&gpiomux_lock, irq_flags); - if (cfg->ref++ == 0 && cfg->active & GPIOMUX_VALID) - __msm_gpiomux_write(gpio, cfg->active); - spin_unlock_irqrestore(&gpiomux_lock, irq_flags); - return 0; -} -EXPORT_SYMBOL(msm_gpiomux_get); - -int msm_gpiomux_put(unsigned gpio) -{ - struct msm_gpiomux_config *cfg = msm_gpiomux_configs + gpio; - unsigned long irq_flags; - - if (gpio >= GPIOMUX_NGPIOS) - return -EINVAL; - - spin_lock_irqsave(&gpiomux_lock, irq_flags); - BUG_ON(cfg->ref == 0); - if (--cfg->ref == 0 && cfg->suspended & GPIOMUX_VALID) - __msm_gpiomux_write(gpio, cfg->suspended); - spin_unlock_irqrestore(&gpiomux_lock, irq_flags); - return 0; -} -EXPORT_SYMBOL(msm_gpiomux_put); - -static int __init gpiomux_init(void) -{ - unsigned n; - - for (n = 0; n < GPIOMUX_NGPIOS; ++n) { - msm_gpiomux_configs[n].ref = 0; - if (!(msm_gpiomux_configs[n].suspended & GPIOMUX_VALID)) - continue; - __msm_gpiomux_write(n, msm_gpiomux_configs[n].suspended); - } - return 0; -} -postcore_initcall(gpiomux_init); |