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Diffstat (limited to 'arch/powerpc/sysdev/qe_lib/qe_io.c')
-rw-r--r--arch/powerpc/sysdev/qe_lib/qe_io.c112
1 files changed, 54 insertions, 58 deletions
diff --git a/arch/powerpc/sysdev/qe_lib/qe_io.c b/arch/powerpc/sysdev/qe_lib/qe_io.c
index e53ea4d374a..d09994164da 100644
--- a/arch/powerpc/sysdev/qe_lib/qe_io.c
+++ b/arch/powerpc/sysdev/qe_lib/qe_io.c
@@ -3,7 +3,7 @@
*
* QE Parallel I/O ports configuration routines
*
- * Copyright (C) Freescale Semicondutor, Inc. 2006. All rights reserved.
+ * Copyright 2006 Freescale Semiconductor, Inc. All rights reserved.
*
* Author: Li Yang <LeoLi@freescale.com>
* Based on code from Shlomi Gridish <gridish@freescale.com>
@@ -16,32 +16,18 @@
#include <linux/stddef.h>
#include <linux/kernel.h>
-#include <linux/init.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
-#define NUM_OF_PINS 32
-
-struct port_regs {
- __be32 cpodr; /* Open drain register */
- __be32 cpdata; /* Data register */
- __be32 cpdir1; /* Direction register */
- __be32 cpdir2; /* Direction register */
- __be32 cppar1; /* Pin assignment register */
- __be32 cppar2; /* Pin assignment register */
-#ifdef CONFIG_PPC_85xx
- u8 pad[8];
-#endif
-};
-
-static struct port_regs *par_io = NULL;
+static struct qe_pio_regs __iomem *par_io;
static int num_par_io_ports = 0;
int par_io_init(struct device_node *np)
@@ -54,7 +40,7 @@ int par_io_init(struct device_node *np)
ret = of_address_to_resource(np, 0, &res);
if (ret)
return ret;
- par_io = ioremap(res.start, res.end - res.start + 1);
+ par_io = ioremap(res.start, resource_size(&res));
num_ports = of_get_property(np, "num-ports", NULL);
if (num_ports)
@@ -63,69 +49,79 @@ int par_io_init(struct device_node *np)
return 0;
}
-int par_io_config_pin(u8 port, u8 pin, int dir, int open_drain,
- int assignment, int has_irq)
+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, pin_mask2bits, new_mask2bits, tmp_val;
-
- if (!par_io)
- return -1;
+ 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 << (NUM_OF_PINS - (pin + 1)));
+ pin_mask1bit = (u32) (1 << (QE_PIO_PINS - (pin + 1)));
/* Set open drain, if required */
- tmp_val = in_be32(&par_io[port].cpodr);
+ tmp_val = in_be32(&par_io->cpodr);
if (open_drain)
- out_be32(&par_io[port].cpodr, pin_mask1bit | tmp_val);
+ out_be32(&par_io->cpodr, pin_mask1bit | tmp_val);
else
- out_be32(&par_io[port].cpodr, ~pin_mask1bit & tmp_val);
+ out_be32(&par_io->cpodr, ~pin_mask1bit & tmp_val);
/* define direction */
- tmp_val = (pin > (NUM_OF_PINS / 2) - 1) ?
- in_be32(&par_io[port].cpdir2) :
- in_be32(&par_io[port].cpdir1);
+ 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 << (NUM_OF_PINS -
- (pin % (NUM_OF_PINS / 2) + 1) * 2));
+ 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 << (NUM_OF_PINS -
- (pin % (NUM_OF_PINS / 2) + 1) * 2));
+ new_mask2bits = (u32) (dir << (QE_PIO_PINS -
+ (pin % (QE_PIO_PINS / 2) + 1) * 2));
/* clear and set 2 bits mask */
- if (pin > (NUM_OF_PINS / 2) - 1) {
- out_be32(&par_io[port].cpdir2,
+ if (pin > (QE_PIO_PINS / 2) - 1) {
+ out_be32(&par_io->cpdir2,
~pin_mask2bits & tmp_val);
tmp_val &= ~pin_mask2bits;
- out_be32(&par_io[port].cpdir2, new_mask2bits | tmp_val);
+ out_be32(&par_io->cpdir2, new_mask2bits | tmp_val);
} else {
- out_be32(&par_io[port].cpdir1,
+ out_be32(&par_io->cpdir1,
~pin_mask2bits & tmp_val);
tmp_val &= ~pin_mask2bits;
- out_be32(&par_io[port].cpdir1, new_mask2bits | tmp_val);
+ out_be32(&par_io->cpdir1, new_mask2bits | tmp_val);
}
/* define pin assignment */
- tmp_val = (pin > (NUM_OF_PINS / 2) - 1) ?
- in_be32(&par_io[port].cppar2) :
- in_be32(&par_io[port].cppar1);
+ tmp_val = (pin > (QE_PIO_PINS / 2) - 1) ?
+ in_be32(&par_io->cppar2) :
+ in_be32(&par_io->cppar1);
- new_mask2bits = (u32) (assignment << (NUM_OF_PINS -
- (pin % (NUM_OF_PINS / 2) + 1) * 2));
+ new_mask2bits = (u32) (assignment << (QE_PIO_PINS -
+ (pin % (QE_PIO_PINS / 2) + 1) * 2));
/* clear and set 2 bits mask */
- if (pin > (NUM_OF_PINS / 2) - 1) {
- out_be32(&par_io[port].cppar2,
+ if (pin > (QE_PIO_PINS / 2) - 1) {
+ out_be32(&par_io->cppar2,
~pin_mask2bits & tmp_val);
tmp_val &= ~pin_mask2bits;
- out_be32(&par_io[port].cppar2, new_mask2bits | tmp_val);
+ out_be32(&par_io->cppar2, new_mask2bits | tmp_val);
} else {
- out_be32(&par_io[port].cppar1,
+ out_be32(&par_io->cppar1,
~pin_mask2bits & tmp_val);
tmp_val &= ~pin_mask2bits;
- out_be32(&par_io[port].cppar1, new_mask2bits | tmp_val);
+ 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);
@@ -136,10 +132,10 @@ int par_io_data_set(u8 port, u8 pin, u8 val)
if (port >= num_par_io_ports)
return -EINVAL;
- if (pin >= NUM_OF_PINS)
+ if (pin >= QE_PIO_PINS)
return -EINVAL;
/* calculate pin location */
- pin_mask = (u32) (1 << (NUM_OF_PINS - 1 - pin));
+ pin_mask = (u32) (1 << (QE_PIO_PINS - 1 - pin));
tmp_val = in_be32(&par_io[port].cpdata);
@@ -160,13 +156,13 @@ int par_io_of_config(struct device_node *np)
const unsigned int *pio_map;
if (par_io == NULL) {
- printk(KERN_ERR "par_io not initialized \n");
+ printk(KERN_ERR "par_io not initialized\n");
return -1;
}
ph = of_get_property(np, "pio-handle", NULL);
- if (ph == 0) {
- printk(KERN_ERR "pio-handle not available \n");
+ if (ph == NULL) {
+ printk(KERN_ERR "pio-handle not available\n");
return -1;
}
@@ -174,12 +170,12 @@ int par_io_of_config(struct device_node *np)
pio_map = of_get_property(pio, "pio-map", &pio_map_len);
if (pio_map == NULL) {
- printk(KERN_ERR "pio-map is not set! \n");
+ 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");
+ printk(KERN_ERR "pio-map format wrong!\n");
return -1;
}
@@ -200,7 +196,7 @@ static void dump_par_io(void)
{
unsigned int i;
- printk(KERN_INFO "%s: par_io=%p\n", __FUNCTION__, par_io);
+ printk(KERN_INFO "%s: par_io=%p\n", __func__, par_io);
for (i = 0; i < num_par_io_ports; i++) {
printk(KERN_INFO " cpodr[%u]=%08x\n", i,
in_be32(&par_io[i].cpodr));
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2025-11-10 05:28:16 +0000