path: root/arch/blackfin/kernel/bfin_gpio.c

/*
 * File:         arch/blackfin/kernel/bfin_gpio.c
 * Based on:
 * Author:       Michael Hennerich (hennerich@blackfin.uclinux.org)
 *
 * Created:
 * Description:  GPIO Abstraction Layer
 *
 * Modified:
 *               Copyright 2008 Analog Devices Inc.
 *
 * Bugs:         Enter bugs at http://blackfin.uclinux.org/
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * 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.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, see the file COPYING, or write
 * to the Free Software Foundation, Inc.,
 * 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
 */

/*
*  Number     BF537/6/4    BF561    BF533/2/1	   BF549/8/4/2
*
*  GPIO_0       PF0         PF0        PF0	   PA0...PJ13
*  GPIO_1       PF1         PF1        PF1
*  GPIO_2       PF2         PF2        PF2
*  GPIO_3       PF3         PF3        PF3
*  GPIO_4       PF4         PF4        PF4
*  GPIO_5       PF5         PF5        PF5
*  GPIO_6       PF6         PF6        PF6
*  GPIO_7       PF7         PF7        PF7
*  GPIO_8       PF8         PF8        PF8
*  GPIO_9       PF9         PF9        PF9
*  GPIO_10      PF10        PF10       PF10
*  GPIO_11      PF11        PF11       PF11
*  GPIO_12      PF12        PF12       PF12
*  GPIO_13      PF13        PF13       PF13
*  GPIO_14      PF14        PF14       PF14
*  GPIO_15      PF15        PF15       PF15
*  GPIO_16      PG0         PF16
*  GPIO_17      PG1         PF17
*  GPIO_18      PG2         PF18
*  GPIO_19      PG3         PF19
*  GPIO_20      PG4         PF20
*  GPIO_21      PG5         PF21
*  GPIO_22      PG6         PF22
*  GPIO_23      PG7         PF23
*  GPIO_24      PG8         PF24
*  GPIO_25      PG9         PF25
*  GPIO_26      PG10        PF26
*  GPIO_27      PG11        PF27
*  GPIO_28      PG12        PF28
*  GPIO_29      PG13        PF29
*  GPIO_30      PG14        PF30
*  GPIO_31      PG15        PF31
*  GPIO_32      PH0         PF32
*  GPIO_33      PH1         PF33
*  GPIO_34      PH2         PF34
*  GPIO_35      PH3         PF35
*  GPIO_36      PH4         PF36
*  GPIO_37      PH5         PF37
*  GPIO_38      PH6         PF38
*  GPIO_39      PH7         PF39
*  GPIO_40      PH8         PF40
*  GPIO_41      PH9         PF41
*  GPIO_42      PH10        PF42
*  GPIO_43      PH11        PF43
*  GPIO_44      PH12        PF44
*  GPIO_45      PH13        PF45
*  GPIO_46      PH14        PF46
*  GPIO_47      PH15        PF47
*/

#include <linux/delay.h>
#include <linux/module.h>
#include <linux/err.h>
#include <linux/proc_fs.h>
#include <asm/blackfin.h>
#include <asm/gpio.h>
#include <asm/portmux.h>
#include <linux/irq.h>

#if ANOMALY_05000311 || ANOMALY_05000323
enum {
	AWA_data = SYSCR,
	AWA_data_clear = SYSCR,
	AWA_data_set = SYSCR,
	AWA_toggle = SYSCR,
	AWA_maska = UART_SCR,
	AWA_maska_clear = UART_SCR,
	AWA_maska_set = UART_SCR,
	AWA_maska_toggle = UART_SCR,
	AWA_maskb = UART_GCTL,
	AWA_maskb_clear = UART_GCTL,
	AWA_maskb_set = UART_GCTL,
	AWA_maskb_toggle = UART_GCTL,
	AWA_dir = SPORT1_STAT,
	AWA_polar = SPORT1_STAT,
	AWA_edge = SPORT1_STAT,
	AWA_both = SPORT1_STAT,
#if ANOMALY_05000311
	AWA_inen = TIMER_ENABLE,
#elif ANOMALY_05000323
	AWA_inen = DMA1_1_CONFIG,
#endif
};
	/* Anomaly Workaround */
#define AWA_DUMMY_READ(name) bfin_read16(AWA_ ## name)
#else
#define AWA_DUMMY_READ(...)  do { } while (0)
#endif

#ifdef BF533_FAMILY
static struct gpio_port_t *gpio_bankb[gpio_bank(MAX_BLACKFIN_GPIOS)] = {
	(struct gpio_port_t *) FIO_FLAG_D,
};
#endif

#if defined(BF527_FAMILY) || defined(BF537_FAMILY)
static struct gpio_port_t *gpio_bankb[gpio_bank(MAX_BLACKFIN_GPIOS)] = {
	(struct gpio_port_t *) PORTFIO,
	(struct gpio_port_t *) PORTGIO,
	(struct gpio_port_t *) PORTHIO,
};

static unsigned short *port_fer[gpio_bank(MAX_BLACKFIN_GPIOS)] = {
	(unsigned short *) PORTF_FER,
	(unsigned short *) PORTG_FER,
	(unsigned short *) PORTH_FER,
};
#endif

#ifdef BF527_FAMILY
static unsigned short *port_mux[