2011-07-18 13:26:01 +00:00
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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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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation; either version 2 of
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* the License, or (at your option) any later version.
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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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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
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* MA 02111-1307 USA
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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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2013-02-07 23:41:01 +00:00
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#if defined(CONFIG_SOC_DA8XX)
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2011-07-18 13:26:01 +00:00
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#define pinmux(x) (&davinci_syscfg_regs->pinmux[x])
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2013-02-01 06:46:00 +00:00
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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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2013-03-11 16:02:40 +00:00
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#else /* CONFIG_SOC_DA8XX && CONFIG_SOC_DA850 */
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2011-07-18 13:26:01 +00:00
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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] */
|
|
|
|
|
{ pinmux(3), 4, 7 },
|
|
|
|
|
{ pinmux(3), 4, 6 },
|
|
|
|
|
{ pinmux(3), 4, 5 },
|
|
|
|
|
{ pinmux(3), 4, 4 },
|
|
|
|
|
{ pinmux(3), 4, 3 },
|
|
|
|
|
{ pinmux(3), 4, 2 },
|
|
|
|
|
{ pinmux(2), 4, 7 },
|
|
|
|
|
{ pinmux(19), 8, 1 },
|
|
|
|
|
{ pinmux(19), 8, 0 },
|
|
|
|
|
{ pinmux(18), 8, 7 },
|
|
|
|
|
{ pinmux(18), 8, 6 },
|
|
|
|
|
{ pinmux(18), 8, 5 },
|
|
|
|
|
{ pinmux(18), 8, 4 },
|
|
|
|
|
{ pinmux(18), 8, 3 },
|
|
|
|
|
{ pinmux(18), 8, 2 },
|
|
|
|
|
};
|
2013-03-11 16:02:40 +00:00
|
|
|
#endif /* CONFIG_SOC_DA8XX && !CONFIG_SOC_DA850 */
|
|
|
|
|
#else /* !CONFIG_SOC_DA8XX */
|
2013-02-07 23:41:01 +00:00
|
|
|
#define davinci_configure_pin_mux(a, b)
|
2013-03-11 16:02:40 +00:00
|
|
|
#endif /* CONFIG_SOC_DA8XX */
|
2011-07-18 13:26:01 +00:00
|
|
|
|
2011-11-11 21:55:36 +00:00
|
|
|
int gpio_request(unsigned gpio, const char *label)
|
2011-07-18 13:26:01 +00:00
|
|
|
{
|
2011-11-11 21:55:36 +00:00
|
|
|
if (gpio >= MAX_NUM_GPIOS)
|
2011-07-18 13:26:01 +00:00
|
|
|
return -1;
|
|
|
|
|
|
2011-11-11 21:55:36 +00:00
|
|
|
if (gpio_registry[gpio].is_registered)
|
2011-07-18 13:26:01 +00:00
|
|
|
return -1;
|
|
|
|
|
|
2011-11-11 21:55:36 +00:00
|
|
|
gpio_registry[gpio].is_registered = 1;
|
|
|
|
|
strncpy(gpio_registry[gpio].name, label, GPIO_NAME_SIZE);
|
|
|
|
|
gpio_registry[gpio].name[GPIO_NAME_SIZE - 1] = 0;
|
2011-07-18 13:26:01 +00:00
|
|
|
|
2011-11-11 21:55:36 +00:00
|
|
|
davinci_configure_pin_mux(&gpio_pinmux[gpio], 1);
|
2011-07-18 13:26:01 +00:00
|
|
|
|
|
|
|
|
return 0;
|
|
|
|
|
}
|
|
|
|
|
|
2011-11-11 21:55:36 +00:00
|
|
|
int gpio_free(unsigned gpio)
|
2011-07-18 13:26:01 +00:00
|
|
|
{
|
2011-11-11 21:55:36 +00:00
|
|
|
if (gpio >= MAX_NUM_GPIOS)
|
|
|
|
|
return -1;
|
2011-07-18 13:26:01 +00:00
|
|
|
|
2011-11-11 21:55:36 +00:00
|
|
|
if (!gpio_registry[gpio].is_registered)
|
|
|
|
|
return -1;
|
|
|
|
|
|
|
|
|
|
gpio_registry[gpio].is_registered = 0;
|
|
|
|
|
gpio_registry[gpio].name[0] = '\0';
|
|
|
|
|
/* Do not configure as input or change pin mux here */
|
|
|
|
|
return 0;
|
2011-07-18 13:26:01 +00:00
|
|
|
}
|
|
|
|
|
|
2011-11-11 21:55:36 +00:00
|
|
|
int gpio_direction_input(unsigned gpio)
|
2011-07-18 13:26:01 +00:00
|
|
|
{
|
|
|
|
|
struct davinci_gpio *bank;
|
|
|
|
|
|
2011-11-11 21:55:36 +00:00
|
|
|
bank = GPIO_BANK(gpio);
|
|
|
|
|
setbits_le32(&bank->dir, 1U << GPIO_BIT(gpio));
|
2011-07-18 13:26:01 +00:00
|
|
|
return 0;
|
|
|
|
|
}
|
|
|
|
|
|
2011-11-11 21:55:36 +00:00
|
|
|
int gpio_direction_output(unsigned gpio, int value)
|
2011-07-18 13:26:01 +00:00
|
|
|
{
|
|
|
|
|
struct davinci_gpio *bank;
|
|
|
|
|
|
2011-11-11 21:55:36 +00:00
|
|
|
bank = GPIO_BANK(gpio);
|
|
|
|
|
clrbits_le32(&bank->dir, 1U << GPIO_BIT(gpio));
|
|
|
|
|
gpio_set_value(gpio, value);
|
2011-07-18 13:26:01 +00:00
|
|
|
return 0;
|
|
|
|
|
}
|
|
|
|
|
|
2011-11-11 21:55:36 +00:00
|
|
|
int gpio_get_value(unsigned gpio)
|
2011-07-18 13:26:01 +00:00
|
|
|
{
|
|
|
|
|
struct davinci_gpio *bank;
|
|
|
|
|
unsigned int ip;
|
|
|
|
|
|
2011-11-11 21:55:36 +00:00
|
|
|
bank = GPIO_BANK(gpio);
|
|
|
|
|
ip = in_le32(&bank->in_data) & (1U << GPIO_BIT(gpio));
|
2011-07-18 13:26:01 +00:00
|
|
|
return ip ? 1 : 0;
|
|
|
|
|
}
|
|
|
|
|
|
2011-11-11 21:55:36 +00:00
|
|
|
int gpio_set_value(unsigned gpio, int value)
|
2011-07-18 13:26:01 +00:00
|
|
|
{
|
|
|
|
|
struct davinci_gpio *bank;
|
|
|
|
|
|
2011-11-11 21:55:36 +00:00
|
|
|
bank = GPIO_BANK(gpio);
|
2011-07-18 13:26:01 +00:00
|
|
|
|
|
|
|
|
if (value)
|
2011-11-11 21:55:36 +00:00
|
|
|
bank->set_data = 1U << GPIO_BIT(gpio);
|
2011-07-18 13:26:01 +00:00
|
|
|
else
|
2011-11-11 21:55:36 +00:00
|
|
|
bank->clr_data = 1U << GPIO_BIT(gpio);
|
|
|
|
|
|
|
|
|
|
return 0;
|
2011-07-18 13:26:01 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
|
|
void gpio_info(void)
|
|
|
|
|
{
|
2011-11-11 21:55:36 +00:00
|
|
|
unsigned gpio, dir, val;
|
2011-07-18 13:26:01 +00:00
|
|
|
struct davinci_gpio *bank;
|
|
|
|
|
|
2011-11-11 21:55:36 +00:00
|
|
|
for (gpio = 0; gpio < MAX_NUM_GPIOS; ++gpio) {
|
|
|
|
|
bank = GPIO_BANK(gpio);
|
|
|
|
|
dir = in_le32(&bank->dir) & (1U << GPIO_BIT(gpio));
|
|
|
|
|
val = gpio_get_value(gpio);
|
2011-07-18 13:26:01 +00:00
|
|
|
|
|
|
|
|
printf("% 4d: %s: %d [%c] %s\n",
|
2011-11-11 21:55:36 +00:00
|
|
|
gpio, dir ? " in" : "out", val,
|
|
|
|
|
gpio_registry[gpio].is_registered ? 'x' : ' ',
|
|
|
|
|
gpio_registry[gpio].name);
|
2011-07-18 13:26:01 +00:00
|
|
|
}
|
|
|
|
|
}
|
