M7350/kernel/arch/arm/mach-msm/gpiomux-v1.c

48 lines
1.5 KiB
C
Raw Normal View History

2024-09-09 08:52:07 +00:00
/* Copyright (c) 2010-2011 The Linux Foundation. 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.
*/
#include <linux/bitops.h>
#include <linux/kernel.h>
#include <linux/io.h>
#include <mach/gpiomux.h>
#include <mach/proc_comm.h>
#include "gpio.h"
void __msm_gpiomux_write(unsigned gpio, struct gpiomux_setting val)
{
unsigned tlmm_config;
unsigned tlmm_disable = 0;
void __iomem *out_reg;
unsigned offset;
uint32_t bits;
int rc;
tlmm_config = (val.drv << 17) |
(val.pull << 15) |
((gpio & 0x3ff) << 4) |
val.func;
if (val.func == GPIOMUX_FUNC_GPIO) {
tlmm_config |= (val.dir > GPIOMUX_IN ? BIT(14) : 0);
msm_gpio_find_out(gpio, &out_reg, &offset);
bits = __raw_readl(out_reg);
if (val.dir == GPIOMUX_OUT_HIGH)
__raw_writel(bits | BIT(offset), out_reg);
else
__raw_writel(bits & ~BIT(offset), out_reg);
}
mb();
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);
}