mirror of
https://git.codelinaro.org/clo/qsdk/oss/boot/u-boot-2016.git
synced 2025-12-10 07:44:53 +01:00
ddd2d641fe
1. Moved gpio structure declaration to gpio.h 2. Moved gpio configuration bit value macros to dt-bindings Change-Id: I9da1cc3703a92e02cfa86765c8d4afe5321fed35 Signed-off-by: Gokul Sriram Palanisamy <gpalan@codeaurora.org>
97 lines
2.8 KiB
C
97 lines
2.8 KiB
C
/*
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* Copyright (c) 2016 The Linux Foundation. All rights reserved.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 and
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* only version 2 as published by the Free Software Foundation.
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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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#include <asm/io.h>
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#include <common.h>
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#include <asm/types.h>
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#include <fdtdec.h>
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#include <asm/arch-qcom-common/gpio.h>
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DECLARE_GLOBAL_DATA_PTR;
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/***********************************************************
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* Function description: configure GPIO functinality
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* Arguments :
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* struct qca_gpio_config gpio_config - GPIO Configuration bits
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*
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* Return : None
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************************************************************/
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void gpio_tlmm_config(struct qca_gpio_config *gpio_config)
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{
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unsigned int val = 0;
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val |= gpio_config->pull;
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val |= gpio_config->func << 2;
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val |= gpio_config->drvstr << 6;
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val |= gpio_config->oe << 9;
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val |= gpio_config->vm << 11;
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val |= gpio_config->od_en << 12;
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val |= gpio_config->pu_res << 13;
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unsigned int *addr =
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(unsigned int *)GPIO_CONFIG_ADDR(gpio_config->gpio);
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writel(val, addr);
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/* Output value is only relevant if GPIO has been configured for fixed
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* output setting - i.e. func == 0
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*/
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if (gpio_config->func == 0) {
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addr = (unsigned int *)GPIO_IN_OUT_ADDR(gpio_config->gpio);
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val = readl(addr);
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val |= gpio_config->out << 1;
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writel(val, addr);
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}
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return;
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}
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void gpio_set_value(unsigned int gpio, unsigned int out)
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{
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unsigned int *addr = (unsigned int *)GPIO_IN_OUT_ADDR(gpio);
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unsigned int val = 0;
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val = readl(addr);
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val &= ~(0x2);
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val |= out << 1;
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writel(val, addr);
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}
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int qca_gpio_init(int offset)
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{
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struct qca_gpio_config gpio_config;
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for (offset = fdt_first_subnode(gd->fdt_blob, offset); offset > 0;
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offset = fdt_next_subnode(gd->fdt_blob, offset)) {
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gpio_config.gpio = fdtdec_get_uint(gd->fdt_blob,
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offset, "gpio", 0);
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gpio_config.func = fdtdec_get_uint(gd->fdt_blob,
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offset, "func", 0);
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gpio_config.out = fdtdec_get_uint(gd->fdt_blob,
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offset, "out", 0);
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gpio_config.pull = fdtdec_get_uint(gd->fdt_blob,
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offset, "pull", 0);
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gpio_config.drvstr = fdtdec_get_uint(gd->fdt_blob,
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offset, "drvstr", 0);
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gpio_config.oe = fdtdec_get_uint(gd->fdt_blob,
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offset, "oe", 0);
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gpio_config.vm = fdtdec_get_uint(gd->fdt_blob,
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offset, "vm", 0);
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gpio_config.od_en = fdtdec_get_uint(gd->fdt_blob,
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offset, "od_en", 0);
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gpio_config.pu_res = fdtdec_get_uint(gd->fdt_blob,
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offset, "pu_res", 0);
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gpio_tlmm_config(&gpio_config);
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}
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return 0;
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}
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