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https://github.com/brain-hackers/u-boot-brain
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![Tom Rini](/assets/img/avatar_default.png)
When U-Boot started using SPDX tags we were among the early adopters and there weren't a lot of other examples to borrow from. So we picked the area of the file that usually had a full license text and replaced it with an appropriate SPDX-License-Identifier: entry. Since then, the Linux Kernel has adopted SPDX tags and they place it as the very first line in a file (except where shebangs are used, then it's second line) and with slightly different comment styles than us. In part due to community overlap, in part due to better tag visibility and in part for other minor reasons, switch over to that style. This commit changes all instances where we have a single declared license in the tag as both the before and after are identical in tag contents. There's also a few places where I found we did not have a tag and have introduced one. Signed-off-by: Tom Rini <trini@konsulko.com>
396 lines
8.8 KiB
C
396 lines
8.8 KiB
C
// SPDX-License-Identifier: GPL-2.0+
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/*
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* GPIO driver for TI DaVinci DA8xx SOCs.
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*
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* (C) Copyright 2011 Guralp Systems Ltd.
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* Laurence Withers <lwithers@guralp.com>
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*/
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#include <common.h>
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#include <asm/io.h>
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#include <asm/gpio.h>
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#include <asm/arch/hardware.h>
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#include <asm/arch/davinci_misc.h>
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static struct gpio_registry {
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int is_registered;
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char name[GPIO_NAME_SIZE];
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} gpio_registry[MAX_NUM_GPIOS];
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#if defined(CONFIG_SOC_DA8XX)
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#define pinmux(x) (&davinci_syscfg_regs->pinmux[x])
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#if defined(CONFIG_SOC_DA8XX) && !defined(CONFIG_SOC_DA850)
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static const struct pinmux_config gpio_pinmux[] = {
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{ pinmux(13), 8, 6 }, /* GP0[0] */
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{ pinmux(13), 8, 7 },
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{ pinmux(14), 8, 0 },
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{ pinmux(14), 8, 1 },
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{ pinmux(14), 8, 2 },
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{ pinmux(14), 8, 3 },
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{ pinmux(14), 8, 4 },
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{ pinmux(14), 8, 5 },
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{ pinmux(14), 8, 6 },
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{ pinmux(14), 8, 7 },
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{ pinmux(15), 8, 0 },
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{ pinmux(15), 8, 1 },
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{ pinmux(15), 8, 2 },
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{ pinmux(15), 8, 3 },
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{ pinmux(15), 8, 4 },
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{ pinmux(15), 8, 5 },
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{ pinmux(15), 8, 6 }, /* GP1[0] */
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{ pinmux(15), 8, 7 },
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{ pinmux(16), 8, 0 },
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{ pinmux(16), 8, 1 },
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{ pinmux(16), 8, 2 },
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{ pinmux(16), 8, 3 },
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{ pinmux(16), 8, 4 },
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{ pinmux(16), 8, 5 },
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{ pinmux(16), 8, 6 },
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{ pinmux(16), 8, 7 },
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{ pinmux(17), 8, 0 },
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{ pinmux(17), 8, 1 },
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{ pinmux(17), 8, 2 },
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{ pinmux(17), 8, 3 },
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{ pinmux(17), 8, 4 },
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{ pinmux(17), 8, 5 },
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{ pinmux(17), 8, 6 }, /* GP2[0] */
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{ pinmux(17), 8, 7 },
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{ pinmux(18), 8, 0 },
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{ pinmux(18), 8, 1 },
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{ pinmux(18), 8, 2 },
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{ pinmux(18), 8, 3 },
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{ pinmux(18), 8, 4 },
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{ pinmux(18), 8, 5 },
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{ pinmux(18), 8, 6 },
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{ pinmux(18), 8, 7 },
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{ pinmux(19), 8, 0 },
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{ pinmux(9), 8, 2 },
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{ pinmux(9), 8, 3 },
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{ pinmux(9), 8, 4 },
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{ pinmux(9), 8, 5 },
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{ pinmux(9), 8, 6 },
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{ pinmux(10), 8, 1 }, /* GP3[0] */
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{ pinmux(10), 8, 2 },
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{ pinmux(10), 8, 3 },
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{ pinmux(10), 8, 4 },
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{ pinmux(10), 8, 5 },
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{ pinmux(10), 8, 6 },
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{ pinmux(10), 8, 7 },
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{ pinmux(11), 8, 0 },
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{ pinmux(11), 8, 1 },
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{ pinmux(11), 8, 2 },
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{ pinmux(11), 8, 3 },
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{ pinmux(11), 8, 4 },
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{ pinmux(9), 8, 7 },
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{ pinmux(2), 8, 6 },
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{ pinmux(11), 8, 5 },
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{ pinmux(11), 8, 6 },
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{ pinmux(12), 8, 4 }, /* GP4[0] */
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{ pinmux(12), 8, 5 },
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{ pinmux(12), 8, 6 },
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{ pinmux(12), 8, 7 },
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{ pinmux(13), 8, 0 },
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{ pinmux(13), 8, 1 },
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{ pinmux(13), 8, 2 },
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{ pinmux(13), 8, 3 },
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{ pinmux(13), 8, 4 },
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{ pinmux(13), 8, 5 },
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{ pinmux(11), 8, 7 },
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{ pinmux(12), 8, 0 },
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{ pinmux(12), 8, 1 },
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{ pinmux(12), 8, 2 },
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{ pinmux(12), 8, 3 },
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{ pinmux(9), 8, 1 },
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{ pinmux(7), 8, 3 }, /* GP5[0] */
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{ pinmux(7), 8, 4 },
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{ pinmux(7), 8, 5 },
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{ pinmux(7), 8, 6 },
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{ pinmux(7), 8, 7 },
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{ pinmux(8), 8, 0 },
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{ pinmux(8), 8, 1 },
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{ pinmux(8), 8, 2 },
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{ pinmux(8), 8, 3 },
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{ pinmux(8), 8, 4 },
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{ pinmux(8), 8, 5 },
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{ pinmux(8), 8, 6 },
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{ pinmux(8), 8, 7 },
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{ pinmux(9), 8, 0 },
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{ pinmux(7), 8, 1 },
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{ pinmux(7), 8, 2 },
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{ pinmux(5), 8, 1 }, /* GP6[0] */
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{ pinmux(5), 8, 2 },
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{ pinmux(5), 8, 3 },
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{ pinmux(5), 8, 4 },
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{ pinmux(5), 8, 5 },
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{ pinmux(5), 8, 6 },
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{ pinmux(5), 8, 7 },
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{ pinmux(6), 8, 0 },
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{ pinmux(6), 8, 1 },
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{ pinmux(6), 8, 2 },
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{ pinmux(6), 8, 3 },
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{ pinmux(6), 8, 4 },
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{ pinmux(6), 8, 5 },
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{ pinmux(6), 8, 6 },
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{ pinmux(6), 8, 7 },
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{ pinmux(7), 8, 0 },
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{ pinmux(1), 8, 0 }, /* GP7[0] */
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{ pinmux(1), 8, 1 },
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{ pinmux(1), 8, 2 },
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{ pinmux(1), 8, 3 },
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{ pinmux(1), 8, 4 },
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{ pinmux(1), 8, 5 },
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{ pinmux(1), 8, 6 },
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{ pinmux(1), 8, 7 },
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{ pinmux(2), 8, 0 },
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{ pinmux(2), 8, 1 },
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{ pinmux(2), 8, 2 },
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{ pinmux(2), 8, 3 },
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{ pinmux(2), 8, 4 },
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{ pinmux(2), 8, 5 },
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{ pinmux(0), 1, 0 },
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{ pinmux(0), 1, 1 },
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};
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#else /* CONFIG_SOC_DA8XX && CONFIG_SOC_DA850 */
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static const struct pinmux_config gpio_pinmux[] = {
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{ pinmux(1), 8, 7 }, /* GP0[0] */
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{ pinmux(1), 8, 6 },
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{ pinmux(1), 8, 5 },
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{ pinmux(1), 8, 4 },
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{ pinmux(1), 8, 3 },
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{ pinmux(1), 8, 2 },
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{ pinmux(1), 8, 1 },
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{ pinmux(1), 8, 0 },
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{ pinmux(0), 8, 7 },
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{ pinmux(0), 8, 6 },
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{ pinmux(0), 8, 5 },
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{ pinmux(0), 8, 4 },
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{ pinmux(0), 8, 3 },
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{ pinmux(0), 8, 2 },
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{ pinmux(0), 8, 1 },
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{ pinmux(0), 8, 0 },
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{ pinmux(4), 8, 7 }, /* GP1[0] */
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{ pinmux(4), 8, 6 },
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{ pinmux(4), 8, 5 },
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{ pinmux(4), 8, 4 },
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{ pinmux(4), 8, 3 },
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{ pinmux(4), 8, 2 },
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{ pinmux(4), 4, 1 },
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{ pinmux(4), 4, 0 },
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{ pinmux(3), 4, 0 },
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{ pinmux(2), 4, 6 },
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{ pinmux(2), 4, 5 },
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{ pinmux(2), 4, 4 },
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{ pinmux(2), 4, 3 },
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{ pinmux(2), 4, 2 },
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{ pinmux(2), 4, 1 },
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{ pinmux(2), 8, 0 },
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{ pinmux(6), 8, 7 }, /* GP2[0] */
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{ pinmux(6), 8, 6 },
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{ pinmux(6), 8, 5 },
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{ pinmux(6), 8, 4 },
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{ pinmux(6), 8, 3 },
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{ pinmux(6), 8, 2 },
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{ pinmux(6), 8, 1 },
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{ pinmux(6), 8, 0 },
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{ pinmux(5), 8, 7 },
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{ pinmux(5), 8, 6 },
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{ pinmux(5), 8, 5 },
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{ pinmux(5), 8, 4 },
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{ pinmux(5), 8, 3 },
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{ pinmux(5), 8, 2 },
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{ pinmux(5), 8, 1 },
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{ pinmux(5), 8, 0 },
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{ pinmux(8), 8, 7 }, /* GP3[0] */
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{ pinmux(8), 8, 6 },
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{ pinmux(8), 8, 5 },
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{ pinmux(8), 8, 4 },
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{ pinmux(8), 8, 3 },
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{ pinmux(8), 8, 2 },
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{ pinmux(8), 8, 1 },
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{ pinmux(8), 8, 0 },
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{ pinmux(7), 8, 7 },
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{ pinmux(7), 8, 6 },
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{ pinmux(7), 8, 5 },
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{ pinmux(7), 8, 4 },
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{ pinmux(7), 8, 3 },
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{ pinmux(7), 8, 2 },
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{ pinmux(7), 8, 1 },
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{ pinmux(7), 8, 0 },
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{ pinmux(10), 8, 7 }, /* GP4[0] */
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{ pinmux(10), 8, 6 },
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{ pinmux(10), 8, 5 },
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{ pinmux(10), 8, 4 },
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{ pinmux(10), 8, 3 },
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{ pinmux(10), 8, 2 },
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{ pinmux(10), 8, 1 },
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{ pinmux(10), 8, 0 },
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{ pinmux(9), 8, 7 },
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{ pinmux(9), 8, 6 },
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{ pinmux(9), 8, 5 },
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{ pinmux(9), 8, 4 },
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{ pinmux(9), 8, 3 },
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{ pinmux(9), 8, 2 },
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{ pinmux(9), 8, 1 },
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{ pinmux(9), 8, 0 },
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{ pinmux(12), 8, 7 }, /* GP5[0] */
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{ pinmux(12), 8, 6 },
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{ pinmux(12), 8, 5 },
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{ pinmux(12), 8, 4 },
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{ pinmux(12), 8, 3 },
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{ pinmux(12), 8, 2 },
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{ pinmux(12), 8, 1 },
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{ pinmux(12), 8, 0 },
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{ pinmux(11), 8, 7 },
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{ pinmux(11), 8, 6 },
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{ pinmux(11), 8, 5 },
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{ pinmux(11), 8, 4 },
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{ pinmux(11), 8, 3 },
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{ pinmux(11), 8, 2 },
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{ pinmux(11), 8, 1 },
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{ pinmux(11), 8, 0 },
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{ pinmux(19), 8, 6 }, /* GP6[0] */
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{ pinmux(19), 8, 5 },
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{ pinmux(19), 8, 4 },
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{ pinmux(19), 8, 3 },
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{ pinmux(19), 8, 2 },
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{ pinmux(16), 8, 1 },
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{ pinmux(14), 8, 1 },
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{ pinmux(14), 8, 0 },
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{ pinmux(13), 8, 7 },
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{ pinmux(13), 8, 6 },
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{ pinmux(13), 8, 5 },
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{ pinmux(13), 8, 4 },
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{ pinmux(13), 8, 3 },
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{ pinmux(13), 8, 2 },
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{ pinmux(13), 8, 1 },
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{ pinmux(13), 8, 0 },
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{ pinmux(18), 8, 1 }, /* GP7[0] */
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{ pinmux(18), 8, 0 },
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{ pinmux(17), 8, 7 },
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{ pinmux(17), 8, 6 },
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{ pinmux(17), 8, 5 },
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{ pinmux(17), 8, 4 },
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{ pinmux(17), 8, 3 },
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{ pinmux(17), 8, 2 },
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{ pinmux(17), 8, 1 },
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{ pinmux(17), 8, 0 },
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{ pinmux(16), 8, 7 },
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{ pinmux(16), 8, 6 },
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{ pinmux(16), 8, 5 },
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{ pinmux(16), 8, 4 },
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{ pinmux(16), 8, 3 },
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{ pinmux(16), 8, 2 },
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{ pinmux(19), 8, 0 }, /* GP8[0] */
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{ pinmux(3), 4, 7 },
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{ pinmux(3), 4, 6 },
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{ pinmux(3), 4, 5 },
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{ pinmux(3), 4, 4 },
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{ pinmux(3), 4, 3 },
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{ pinmux(3), 4, 2 },
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{ pinmux(2), 4, 7 },
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{ pinmux(19), 8, 1 },
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{ pinmux(19), 8, 0 },
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{ pinmux(18), 8, 7 },
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{ pinmux(18), 8, 6 },
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{ pinmux(18), 8, 5 },
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{ pinmux(18), 8, 4 },
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{ pinmux(18), 8, 3 },
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{ pinmux(18), 8, 2 },
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};
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#endif /* CONFIG_SOC_DA8XX && !CONFIG_SOC_DA850 */
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#else /* !CONFIG_SOC_DA8XX */
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#define davinci_configure_pin_mux(a, b)
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#endif /* CONFIG_SOC_DA8XX */
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int gpio_request(unsigned gpio, const char *label)
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{
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if (gpio >= MAX_NUM_GPIOS)
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return -1;
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if (gpio_registry[gpio].is_registered)
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return -1;
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gpio_registry[gpio].is_registered = 1;
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strncpy(gpio_registry[gpio].name, label, GPIO_NAME_SIZE);
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gpio_registry[gpio].name[GPIO_NAME_SIZE - 1] = 0;
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davinci_configure_pin_mux(&gpio_pinmux[gpio], 1);
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return 0;
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}
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int gpio_free(unsigned gpio)
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{
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if (gpio >= MAX_NUM_GPIOS)
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return -1;
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if (!gpio_registry[gpio].is_registered)
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return -1;
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gpio_registry[gpio].is_registered = 0;
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gpio_registry[gpio].name[0] = '\0';
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/* Do not configure as input or change pin mux here */
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return 0;
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}
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int gpio_direction_input(unsigned gpio)
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{
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struct davinci_gpio *bank;
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bank = GPIO_BANK(gpio);
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setbits_le32(&bank->dir, 1U << GPIO_BIT(gpio));
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return 0;
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}
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int gpio_direction_output(unsigned gpio, int value)
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{
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struct davinci_gpio *bank;
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bank = GPIO_BANK(gpio);
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clrbits_le32(&bank->dir, 1U << GPIO_BIT(gpio));
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gpio_set_value(gpio, value);
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return 0;
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}
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int gpio_get_value(unsigned gpio)
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{
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struct davinci_gpio *bank;
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unsigned int ip;
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bank = GPIO_BANK(gpio);
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ip = in_le32(&bank->in_data) & (1U << GPIO_BIT(gpio));
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return ip ? 1 : 0;
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}
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int gpio_set_value(unsigned gpio, int value)
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{
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struct davinci_gpio *bank;
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bank = GPIO_BANK(gpio);
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if (value)
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bank->set_data = 1U << GPIO_BIT(gpio);
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else
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bank->clr_data = 1U << GPIO_BIT(gpio);
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return 0;
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}
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void gpio_info(void)
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{
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unsigned gpio, dir, val;
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struct davinci_gpio *bank;
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for (gpio = 0; gpio < MAX_NUM_GPIOS; ++gpio) {
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bank = GPIO_BANK(gpio);
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dir = in_le32(&bank->dir) & (1U << GPIO_BIT(gpio));
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val = gpio_get_value(gpio);
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printf("% 4d: %s: %d [%c] %s\n",
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gpio, dir ? " in" : "out", val,
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gpio_registry[gpio].is_registered ? 'x' : ' ',
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gpio_registry[gpio].name);
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}
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}
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