1de238e0eb
GPIO support for Qualcomm SOCs requires interaction with the radio (baseband processor). This API allows the different boards to enable GPIO through the radio processor in a generic way. Signed-off-by: Gregory Bean <gbean@codeaurora.org> Signed-off-by: David Brown <davidb@codeaurora.org> Signed-off-by: Daniel Walker <dwalker@codeaurora.org> Signed-off-by: Abhijeet Dharmapurikar <adharmap@codeaurora.org> Signed-off-by: Stepan Moskovchenko <stepanm@codeaurora.org>
86 lines
2.4 KiB
C
86 lines
2.4 KiB
C
/* linux/arch/arm/mach-msm/gpio.c
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*
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* Copyright (C) 2007 Google, Inc.
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* Copyright (c) 2009, Code Aurora Forum. All rights reserved.
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*
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* This software is licensed under the terms of the GNU General Public
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* License version 2, as published by the Free Software Foundation, and
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* may be copied, distributed, and modified under those terms.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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*/
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#include <linux/module.h>
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#include <mach/gpio.h>
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#include "proc_comm.h"
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int gpio_tlmm_config(unsigned config, unsigned disable)
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{
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return msm_proc_comm(PCOM_RPC_GPIO_TLMM_CONFIG_EX, &config, &disable);
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}
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EXPORT_SYMBOL(gpio_tlmm_config);
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int msm_gpios_enable(const struct msm_gpio *table, int size)
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{
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int rc;
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int i;
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const struct msm_gpio *g;
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for (i = 0; i < size; i++) {
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g = table + i;
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rc = gpio_tlmm_config(g->gpio_cfg, GPIO_ENABLE);
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if (rc) {
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pr_err("gpio_tlmm_config(0x%08x, GPIO_ENABLE)"
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" <%s> failed: %d\n",
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g->gpio_cfg, g->label ?: "?", rc);
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pr_err("pin %d func %d dir %d pull %d drvstr %d\n",
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GPIO_PIN(g->gpio_cfg), GPIO_FUNC(g->gpio_cfg),
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GPIO_DIR(g->gpio_cfg), GPIO_PULL(g->gpio_cfg),
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GPIO_DRVSTR(g->gpio_cfg));
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goto err;
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}
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}
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return 0;
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err:
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msm_gpios_disable(table, i);
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return rc;
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}
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EXPORT_SYMBOL(msm_gpios_enable);
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void msm_gpios_disable(const struct msm_gpio *table, int size)
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{
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int rc;
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int i;
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const struct msm_gpio *g;
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for (i = size-1; i >= 0; i--) {
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g = table + i;
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rc = gpio_tlmm_config(g->gpio_cfg, GPIO_DISABLE);
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if (rc) {
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pr_err("gpio_tlmm_config(0x%08x, GPIO_DISABLE)"
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" <%s> failed: %d\n",
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g->gpio_cfg, g->label ?: "?", rc);
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pr_err("pin %d func %d dir %d pull %d drvstr %d\n",
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GPIO_PIN(g->gpio_cfg), GPIO_FUNC(g->gpio_cfg),
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GPIO_DIR(g->gpio_cfg), GPIO_PULL(g->gpio_cfg),
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GPIO_DRVSTR(g->gpio_cfg));
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}
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}
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}
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EXPORT_SYMBOL(msm_gpios_disable);
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int msm_gpios_request_enable(const struct msm_gpio *table, int size)
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{
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int rc = msm_gpios_enable(table, size);
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return rc;
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}
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EXPORT_SYMBOL(msm_gpios_request_enable);
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void msm_gpios_disable_free(const struct msm_gpio *table, int size)
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{
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msm_gpios_disable(table, size);
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}
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EXPORT_SYMBOL(msm_gpios_disable_free);
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