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authorArnd Bergmann <arnd@arndb.de>2012-10-04 22:57:00 +0200
committerArnd Bergmann <arnd@arndb.de>2012-10-04 22:57:51 +0200
commitc37d6154c0b9163c27e53cc1d0be3867b4abd760 (patch)
tree7a24522c56d1cb284dff1d3c225bbdaba0901bb5 /arch/arm/mach-pnx4008/gpio.c
parente7a570ff7dff9af6e54ff5e580a61ec7652137a0 (diff)
parent8a1ab3155c2ac7fbe5f2038d6e26efeb607a1498 (diff)
Merge branch 'disintegrate-asm-generic' of git://git.infradead.org/users/dhowells/linux-headers into asm-generic
Patches from David Howells <dhowells@redhat.com>: This is to complete part of the UAPI disintegration for which the preparatory patches were pulled recently. Note that there are some fixup patches which are at the base of the branch aimed at you, plus all arches get the asm-generic branch merged in too. * 'disintegrate-asm-generic' of git://git.infradead.org/users/dhowells/linux-headers: UAPI: (Scripted) Disintegrate include/asm-generic UAPI: Fix conditional header installation handling (notably kvm_para.h on m68k) c6x: remove c6x signal.h UAPI: Split compound conditionals containing __KERNEL__ in Arm64 UAPI: Fix the guards on various asm/unistd.h files Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Diffstat (limited to 'arch/arm/mach-pnx4008/gpio.c')
-rw-r--r--arch/arm/mach-pnx4008/gpio.c328
1 files changed, 0 insertions, 328 deletions
diff --git a/arch/arm/mach-pnx4008/gpio.c b/arch/arm/mach-pnx4008/gpio.c
deleted file mode 100644
index d3e71d3847b..00000000000
--- a/arch/arm/mach-pnx4008/gpio.c
+++ /dev/null
@@ -1,328 +0,0 @@
-/*
- * arch/arm/mach-pnx4008/gpio.c
- *
- * PNX4008 GPIO driver
- *
- * Author: Dmitry Chigirev <source@mvista.com>
- *
- * Based on reference code by Iwo Mergler and Z.Tabaaloute from Philips:
- * Copyright (c) 2005 Koninklijke Philips Electronics N.V.
- *
- * 2005 (c) MontaVista Software, Inc. This file is licensed under
- * the terms of the GNU General Public License version 2. This program
- * is licensed "as is" without any warranty of any kind, whether express
- * or implied.
- */
-#include <linux/types.h>
-#include <linux/kernel.h>
-#include <linux/module.h>
-#include <linux/io.h>
-#include <mach/hardware.h>
-#include <mach/platform.h>
-#include <mach/gpio-pnx4008.h>
-
-/* register definitions */
-#define PIO_VA_BASE IO_ADDRESS(PNX4008_PIO_BASE)
-
-#define PIO_INP_STATE (0x00U)
-#define PIO_OUTP_SET (0x04U)
-#define PIO_OUTP_CLR (0x08U)
-#define PIO_OUTP_STATE (0x0CU)
-#define PIO_DRV_SET (0x10U)
-#define PIO_DRV_CLR (0x14U)
-#define PIO_DRV_STATE (0x18U)
-#define PIO_SDINP_STATE (0x1CU)
-#define PIO_SDOUTP_SET (0x20U)
-#define PIO_SDOUTP_CLR (0x24U)
-#define PIO_MUX_SET (0x28U)
-#define PIO_MUX_CLR (0x2CU)
-#define PIO_MUX_STATE (0x30U)
-
-static inline void gpio_lock(void)
-{
- local_irq_disable();
-}
-
-static inline void gpio_unlock(void)
-{
- local_irq_enable();
-}
-
-/* Inline functions */
-static inline int gpio_read_bit(u32 reg, int gpio)
-{
- u32 bit, val;
- int ret = -EFAULT;
-
- if (gpio < 0)
- goto out;
-
- bit = GPIO_BIT(gpio);
- if (bit) {
- val = __raw_readl(PIO_VA_BASE + reg);
- ret = (val & bit) ? 1 : 0;
- }
-out:
- return ret;
-}
-
-static inline int gpio_set_bit(u32 reg, int gpio)
-{
- u32 bit, val;
- int ret = -EFAULT;
-
- if (gpio < 0)
- goto out;
-
- bit = GPIO_BIT(gpio);
- if (bit) {
- val = __raw_readl(PIO_VA_BASE + reg);
- val |= bit;
- __raw_writel(val, PIO_VA_BASE + reg);
- ret = 0;
- }
-out:
- return ret;
-}
-
-/* Very simple access control, bitmap for allocated/free */
-static unsigned long access_map[4];
-#define INP_INDEX 0
-#define OUTP_INDEX 1
-#define GPIO_INDEX 2
-#define MUX_INDEX 3
-
-/*GPIO to Input Mapping */
-static short gpio_to_inp_map[32] = {
- -1, -1, -1, -1, -1, -1, -1, -1,
- -1, -1, -1, -1, -1, -1, -1, -1,
- -1, -1, -1, -1, -1, -1, -1, -1,
- -1, 10, 11, 12, 13, 14, 24, -1
-};
-
-/*GPIO to Mux Mapping */
-static short gpio_to_mux_map[32] = {
- -1, -1, -1, -1, -1, -1, -1, -1,
- -1, -1, -1, -1, -1, -1, -1, -1,
- -1, -1, -1, -1, -1, -1, -1, -1,
- -1, -1, -1, 0, 1, 4, 5, -1
-};
-
-/*Output to Mux Mapping */
-static short outp_to_mux_map[32] = {
- -1, -1, -1, 6, -1, -1, -1, -1,
- -1, -1, -1, -1, -1, -1, -1, -1,
- -1, -1, -1, -1, -1, 2, -1, -1,
- -1, -1, -1, -1, -1, -1, -1, -1
-};
-
-int pnx4008_gpio_register_pin(unsigned short pin)
-{
- unsigned long bit = GPIO_BIT(pin);
- int ret = -EBUSY; /* Already in use */
-
- gpio_lock();
-
- if (GPIO_ISBID(pin)) {
- if (access_map[GPIO_INDEX] & bit)
- goto out;
- access_map[GPIO_INDEX] |= bit;
-
- } else if (GPIO_ISRAM(pin)) {
- if (access_map[GPIO_INDEX] & bit)
- goto out;
- access_map[GPIO_INDEX] |= bit;
-
- } else if (GPIO_ISMUX(pin)) {
- if (access_map[MUX_INDEX] & bit)
- goto out;
- access_map[MUX_INDEX] |= bit;
-
- } else if (GPIO_ISOUT(pin)) {
- if (access_map[OUTP_INDEX] & bit)
- goto out;
- access_map[OUTP_INDEX] |= bit;
-
- } else if (GPIO_ISIN(pin)) {
- if (access_map[INP_INDEX] & bit)
- goto out;
- access_map[INP_INDEX] |= bit;
- } else
- goto out;
- ret = 0;
-
-out:
- gpio_unlock();
- return ret;
-}
-
-EXPORT_SYMBOL(pnx4008_gpio_register_pin);
-
-int pnx4008_gpio_unregister_pin(unsigned short pin)
-{
- unsigned long bit = GPIO_BIT(pin);
- int ret = -EFAULT; /* Not registered */
-
- gpio_lock();
-
- if (GPIO_ISBID(pin)) {
- if (~access_map[GPIO_INDEX] & bit)
- goto out;
- access_map[GPIO_INDEX] &= ~bit;
- } else if (GPIO_ISRAM(pin)) {
- if (~access_map[GPIO_INDEX] & bit)
- goto out;
- access_map[GPIO_INDEX] &= ~bit;
- } else if (GPIO_ISMUX(pin)) {
- if (~access_map[MUX_INDEX] & bit)
- goto out;
- access_map[MUX_INDEX] &= ~bit;
- } else if (GPIO_ISOUT(pin)) {
- if (~access_map[OUTP_INDEX] & bit)
- goto out;
- access_map[OUTP_INDEX] &= ~bit;
- } else if (GPIO_ISIN(pin)) {
- if (~access_map[INP_INDEX] & bit)
- goto out;
- access_map[INP_INDEX] &= ~bit;
- } else
- goto out;
- ret = 0;
-
-out:
- gpio_unlock();
- return ret;
-}
-
-EXPORT_SYMBOL(pnx4008_gpio_unregister_pin);
-
-unsigned long pnx4008_gpio_read_pin(unsigned short pin)
-{
- unsigned long ret = -EFAULT;
- int gpio = GPIO_BIT_MASK(pin);
- gpio_lock();
- if (GPIO_ISOUT(pin)) {
- ret = gpio_read_bit(PIO_OUTP_STATE, gpio);
- } else if (GPIO_ISRAM(pin)) {
- if (gpio_read_bit(PIO_DRV_STATE, gpio) == 0) {
- ret = gpio_read_bit(PIO_SDINP_STATE, gpio);
- }
- } else if (GPIO_ISBID(pin)) {
- ret = gpio_read_bit(PIO_DRV_STATE, gpio);
- if (ret > 0)
- ret = gpio_read_bit(PIO_OUTP_STATE, gpio);
- else if (ret == 0)
- ret =
- gpio_read_bit(PIO_INP_STATE, gpio_to_inp_map[gpio]);
- } else if (GPIO_ISIN(pin)) {
- ret = gpio_read_bit(PIO_INP_STATE, gpio);
- }
- gpio_unlock();
- return ret;
-}
-
-EXPORT_SYMBOL(pnx4008_gpio_read_pin);
-
-/* Write Value to output */
-int pnx4008_gpio_write_pin(unsigned short pin, int output)
-{
- int gpio = GPIO_BIT_MASK(pin);
- int ret = -EFAULT;
-
- gpio_lock();
- if (GPIO_ISOUT(pin)) {
- printk( "writing '%x' to '%x'\n",
- gpio, output ? PIO_OUTP_SET : PIO_OUTP_CLR );
- ret = gpio_set_bit(output ? PIO_OUTP_SET : PIO_OUTP_CLR, gpio);
- } else if (GPIO_ISRAM(pin)) {
- if (gpio_read_bit(PIO_DRV_STATE, gpio) > 0)
- ret = gpio_set_bit(output ? PIO_SDOUTP_SET :
- PIO_SDOUTP_CLR, gpio);
- } else if (GPIO_ISBID(pin)) {
- if (gpio_read_bit(PIO_DRV_STATE, gpio) > 0)
- ret = gpio_set_bit(output ? PIO_OUTP_SET :
- PIO_OUTP_CLR, gpio);
- }
- gpio_unlock();
- return ret;
-}
-
-EXPORT_SYMBOL(pnx4008_gpio_write_pin);
-
-/* Value = 1 : Set GPIO pin as output */
-/* Value = 0 : Set GPIO pin as input */
-int pnx4008_gpio_set_pin_direction(unsigned short pin, int output)
-{
- int gpio = GPIO_BIT_MASK(pin);
- int ret = -EFAULT;
-
- gpio_lock();
- if (GPIO_ISBID(pin) || GPIO_ISRAM(pin)) {
- ret = gpio_set_bit(output ? PIO_DRV_SET : PIO_DRV_CLR, gpio);
- }
- gpio_unlock();
- return ret;
-}
-
-EXPORT_SYMBOL(pnx4008_gpio_set_pin_direction);
-
-/* Read GPIO pin direction: 0= pin used as input, 1= pin used as output*/
-int pnx4008_gpio_read_pin_direction(unsigned short pin)
-{
- int gpio = GPIO_BIT_MASK(pin);
- int ret = -EFAULT;
-
- gpio_lock();
- if (GPIO_ISBID(pin) || GPIO_ISRAM(pin)) {
- ret = gpio_read_bit(PIO_DRV_STATE, gpio);
- }
- gpio_unlock();
- return ret;
-}
-
-EXPORT_SYMBOL(pnx4008_gpio_read_pin_direction);
-
-/* Value = 1 : Set pin to muxed function */
-/* Value = 0 : Set pin as GPIO */
-int pnx4008_gpio_set_pin_mux(unsigned short pin, int output)
-{
- int gpio = GPIO_BIT_MASK(pin);
- int ret = -EFAULT;
-
- gpio_lock();
- if (GPIO_ISBID(pin)) {
- ret =
- gpio_set_bit(output ? PIO_MUX_SET : PIO_MUX_CLR,
- gpio_to_mux_map[gpio]);
- } else if (GPIO_ISOUT(pin)) {
- ret =
- gpio_set_bit(output ? PIO_MUX_SET : PIO_MUX_CLR,
- outp_to_mux_map[gpio]);
- } else if (GPIO_ISMUX(pin)) {
- ret = gpio_set_bit(output ? PIO_MUX_SET : PIO_MUX_CLR, gpio);
- }
- gpio_unlock();
- return ret;
-}
-
-EXPORT_SYMBOL(pnx4008_gpio_set_pin_mux);
-
-/* Read pin mux function: 0= pin used as GPIO, 1= pin used for muxed function*/
-int pnx4008_gpio_read_pin_mux(unsigned short pin)
-{
- int gpio = GPIO_BIT_MASK(pin);
- int ret = -EFAULT;
-
- gpio_lock();
- if (GPIO_ISBID(pin)) {
- ret = gpio_read_bit(PIO_MUX_STATE, gpio_to_mux_map[gpio]);
- } else if (GPIO_ISOUT(pin)) {
- ret = gpio_read_bit(PIO_MUX_STATE, outp_to_mux_map[gpio]);
- } else if (GPIO_ISMUX(pin)) {
- ret = gpio_read_bit(PIO_MUX_STATE, gpio);
- }
- gpio_unlock();
- return ret;
-}
-
-EXPORT_SYMBOL(pnx4008_gpio_read_pin_mux);