summaryrefslogtreecommitdiff
path: root/arch/arm/mach-msm/gpiomux.c
diff options
context:
space:
mode:
Diffstat (limited to 'arch/arm/mach-msm/gpiomux.c')
-rw-r--r--arch/arm/mach-msm/gpiomux.c111
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 2b8e2d217082..000000000000
--- 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);