diff options
Diffstat (limited to 'arch/powerpc/sysdev/qe_lib/qe_io.c')
| -rw-r--r-- | arch/powerpc/sysdev/qe_lib/qe_io.c | 192 |
1 files changed, 0 insertions, 192 deletions
diff --git a/arch/powerpc/sysdev/qe_lib/qe_io.c b/arch/powerpc/sysdev/qe_lib/qe_io.c deleted file mode 100644 index 7ea0174f6d3d..000000000000 --- a/arch/powerpc/sysdev/qe_lib/qe_io.c +++ /dev/null @@ -1,192 +0,0 @@ -/* - * arch/powerpc/sysdev/qe_lib/qe_io.c - * - * QE Parallel I/O ports configuration routines - * - * Copyright 2006 Freescale Semiconductor, Inc. All rights reserved. - * - * Author: Li Yang <LeoLi@freescale.com> - * Based on code from Shlomi Gridish <gridish@freescale.com> - * - * 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. - */ - -#include <linux/stddef.h> -#include <linux/kernel.h> -#include <linux/errno.h> -#include <linux/module.h> -#include <linux/ioport.h> - -#include <asm/io.h> -#include <asm/qe.h> -#include <asm/prom.h> -#include <sysdev/fsl_soc.h> - -#undef DEBUG - -static struct qe_pio_regs __iomem *par_io; -static int num_par_io_ports = 0; - -int par_io_init(struct device_node *np) -{ - struct resource res; - int ret; - const u32 *num_ports; - - /* Map Parallel I/O ports registers */ - ret = of_address_to_resource(np, 0, &res); - if (ret) - return ret; - par_io = ioremap(res.start, resource_size(&res)); - - num_ports = of_get_property(np, "num-ports", NULL); - if (num_ports) - num_par_io_ports = *num_ports; - - return 0; -} - -void __par_io_config_pin(struct qe_pio_regs __iomem *par_io, u8 pin, int dir, - int open_drain, int assignment, int has_irq) -{ - u32 pin_mask1bit; - u32 pin_mask2bits; - u32 new_mask2bits; - u32 tmp_val; - - /* calculate pin location for single and 2 bits information */ - pin_mask1bit = (u32) (1 << (QE_PIO_PINS - (pin + 1))); - - /* Set open drain, if required */ - tmp_val = in_be32(&par_io->cpodr); - if (open_drain) - out_be32(&par_io->cpodr, pin_mask1bit | tmp_val); - else - out_be32(&par_io->cpodr, ~pin_mask1bit & tmp_val); - - /* define direction */ - tmp_val = (pin > (QE_PIO_PINS / 2) - 1) ? - in_be32(&par_io->cpdir2) : - in_be32(&par_io->cpdir1); - - /* get all bits mask for 2 bit per port */ - pin_mask2bits = (u32) (0x3 << (QE_PIO_PINS - - (pin % (QE_PIO_PINS / 2) + 1) * 2)); - - /* Get the final mask we need for the right definition */ - new_mask2bits = (u32) (dir << (QE_PIO_PINS - - (pin % (QE_PIO_PINS / 2) + 1) * 2)); - - /* clear and set 2 bits mask */ - if (pin > (QE_PIO_PINS / 2) - 1) { - out_be32(&par_io->cpdir2, - ~pin_mask2bits & tmp_val); - tmp_val &= ~pin_mask2bits; - out_be32(&par_io->cpdir2, new_mask2bits | tmp_val); - } else { - out_be32(&par_io->cpdir1, - ~pin_mask2bits & tmp_val); - tmp_val &= ~pin_mask2bits; - out_be32(&par_io->cpdir1, new_mask2bits | tmp_val); - } - /* define pin assignment */ - tmp_val = (pin > (QE_PIO_PINS / 2) - 1) ? - in_be32(&par_io->cppar2) : - in_be32(&par_io->cppar1); - - new_mask2bits = (u32) (assignment << (QE_PIO_PINS - - (pin % (QE_PIO_PINS / 2) + 1) * 2)); - /* clear and set 2 bits mask */ - if (pin > (QE_PIO_PINS / 2) - 1) { - out_be32(&par_io->cppar2, - ~pin_mask2bits & tmp_val); - tmp_val &= ~pin_mask2bits; - out_be32(&par_io->cppar2, new_mask2bits | tmp_val); - } else { - out_be32(&par_io->cppar1, - ~pin_mask2bits & tmp_val); - tmp_val &= ~pin_mask2bits; - out_be32(&par_io->cppar1, new_mask2bits | tmp_val); - } -} -EXPORT_SYMBOL(__par_io_config_pin); - -int par_io_config_pin(u8 port, u8 pin, int dir, int open_drain, - int assignment, int has_irq) -{ - if (!par_io || port >= num_par_io_ports) - return -EINVAL; - - __par_io_config_pin(&par_io[port], pin, dir, open_drain, assignment, - has_irq); - return 0; -} -EXPORT_SYMBOL(par_io_config_pin); - -int par_io_data_set(u8 port, u8 pin, u8 val) -{ - u32 pin_mask, tmp_val; - - if (port >= num_par_io_ports) - return -EINVAL; - if (pin >= QE_PIO_PINS) - return -EINVAL; - /* calculate pin location */ - pin_mask = (u32) (1 << (QE_PIO_PINS - 1 - pin)); - - tmp_val = in_be32(&par_io[port].cpdata); - - if (val == 0) /* clear */ - out_be32(&par_io[port].cpdata, ~pin_mask & tmp_val); - else /* set */ - out_be32(&par_io[port].cpdata, pin_mask | tmp_val); - - return 0; -} -EXPORT_SYMBOL(par_io_data_set); - -int par_io_of_config(struct device_node *np) -{ - struct device_node *pio; - const phandle *ph; - int pio_map_len; - const unsigned int *pio_map; - - if (par_io == NULL) { - printk(KERN_ERR "par_io not initialized\n"); - return -1; - } - - ph = of_get_property(np, "pio-handle", NULL); - if (ph == NULL) { - printk(KERN_ERR "pio-handle not available\n"); - return -1; - } - - pio = of_find_node_by_phandle(*ph); - - pio_map = of_get_property(pio, "pio-map", &pio_map_len); - if (pio_map == NULL) { - printk(KERN_ERR "pio-map is not set!\n"); - return -1; - } - pio_map_len /= sizeof(unsigned int); - if ((pio_map_len % 6) != 0) { - printk(KERN_ERR "pio-map format wrong!\n"); - return -1; - } - - while (pio_map_len > 0) { - par_io_config_pin((u8) pio_map[0], (u8) pio_map[1], - (int) pio_map[2], (int) pio_map[3], - (int) pio_map[4], (int) pio_map[5]); - pio_map += 6; - pio_map_len -= 6; - } - of_node_put(pio); - return 0; -} -EXPORT_SYMBOL(par_io_of_config); |