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From 834353ea867a84649d452bac03b97ce32dc6e318 Mon Sep 17 00:00:00 2001
From: John Crispin <blogic@openwrt.org>
Date: Fri, 11 Nov 2011 12:45:24 +0100
Subject: [PATCH 03/70] MIPS: lantiq: change ltq_request_gpio() call signature
ltq_request_gpio() was using alt0/1 to multiplex the function of GPIO pins.
This was XWAY specific. In order to also accomodate SoCs that require more bits
we use a 32bit mask instead. This way the call signature is consistent between
XWAY and FALC-ON.
Signed-off-by: John Crispin <blogic@openwrt.org>
Signed-off-by: Thomas Langer <thomas.langer@lantiq.com>
---
.../mips/include/asm/mach-lantiq/xway/lantiq_soc.h | 4 +-
arch/mips/lantiq/xway/gpio.c | 8 ++--
arch/mips/lantiq/xway/gpio_stp.c | 6 ++--
arch/mips/pci/pci-lantiq.c | 36 +++++++++----------
4 files changed, 26 insertions(+), 28 deletions(-)
--- a/arch/mips/include/asm/mach-lantiq/xway/lantiq_soc.h
+++ b/arch/mips/include/asm/mach-lantiq/xway/lantiq_soc.h
@@ -135,8 +135,8 @@ extern __iomem void *ltq_ebu_membase;
extern __iomem void *ltq_cgu_membase;
/* request a non-gpio and set the PIO config */
-extern int ltq_gpio_request(unsigned int pin, unsigned int alt0,
- unsigned int alt1, unsigned int dir, const char *name);
+extern int ltq_gpio_request(unsigned int pin, unsigned int mux,
+ unsigned int dir, const char *name);
extern void ltq_pmu_enable(unsigned int module);
extern void ltq_pmu_disable(unsigned int module);
extern void ltq_cgu_enable(unsigned int clk);
--- a/arch/mips/lantiq/xway/gpio.c
+++ b/arch/mips/lantiq/xway/gpio.c
@@ -48,8 +48,8 @@ int irq_to_gpio(unsigned int gpio)
}
EXPORT_SYMBOL(irq_to_gpio);
-int ltq_gpio_request(unsigned int pin, unsigned int alt0,
- unsigned int alt1, unsigned int dir, const char *name)
+int ltq_gpio_request(unsigned int pin, unsigned int mux,
+ unsigned int dir, const char *name)
{
int id = 0;
@@ -67,13 +67,13 @@ int ltq_gpio_request(unsigned int pin, u
pin -= PINS_PER_PORT;
id++;
}
- if (alt0)
+ if (mux & 0x2)
ltq_gpio_setbit(ltq_gpio_port[id].membase,
LTQ_GPIO_ALTSEL0, pin);
else
ltq_gpio_clearbit(ltq_gpio_port[id].membase,
LTQ_GPIO_ALTSEL0, pin);
- if (alt1)
+ if (mux & 0x1)
ltq_gpio_setbit(ltq_gpio_port[id].membase,
LTQ_GPIO_ALTSEL1, pin);
else
--- a/arch/mips/lantiq/xway/gpio_stp.c
+++ b/arch/mips/lantiq/xway/gpio_stp.c
@@ -79,9 +79,9 @@ static struct gpio_chip ltq_stp_chip = {
static int ltq_stp_hw_init(void)
{
/* the 3 pins used to control the external stp */
- ltq_gpio_request(4, 1, 0, 1, "stp-st");
- ltq_gpio_request(5, 1, 0, 1, "stp-d");
- ltq_gpio_request(6, 1, 0, 1, "stp-sh");
+ ltq_gpio_request(4, 2, 1, "stp-st");
+ ltq_gpio_request(5, 2, 1, "stp-d");
+ ltq_gpio_request(6, 2, 1, "stp-sh");
/* sane defaults */
ltq_stp_w32(0, LTQ_STP_AR);
--- a/arch/mips/pci/pci-lantiq.c
+++ b/arch/mips/pci/pci-lantiq.c
@@ -70,28 +70,27 @@
struct ltq_pci_gpio_map {
int pin;
- int alt0;
- int alt1;
+ int mux;
int dir;
char *name;
};
/* the pci core can make use of the following gpios */
static struct ltq_pci_gpio_map ltq_pci_gpio_map[] = {
- { 0, 1, 0, 0, "pci-exin0" },
- { 1, 1, 0, 0, "pci-exin1" },
- { 2, 1, 0, 0, "pci-exin2" },
- { 39, 1, 0, 0, "pci-exin3" },
- { 10, 1, 0, 0, "pci-exin4" },
- { 9, 1, 0, 0, "pci-exin5" },
- { 30, 1, 0, 1, "pci-gnt1" },
- { 23, 1, 0, 1, "pci-gnt2" },
- { 19, 1, 0, 1, "pci-gnt3" },
- { 38, 1, 0, 1, "pci-gnt4" },
- { 29, 1, 0, 0, "pci-req1" },
- { 31, 1, 0, 0, "pci-req2" },
- { 3, 1, 0, 0, "pci-req3" },
- { 37, 1, 0, 0, "pci-req4" },
+ { 0, 2, 0, "pci-exin0" },
+ { 1, 2, 0, "pci-exin1" },
+ { 2, 2, 0, "pci-exin2" },
+ { 39, 2, 0, "pci-exin3" },
+ { 10, 2, 0, "pci-exin4" },
+ { 9, 2, 0, "pci-exin5" },
+ { 30, 2, 1, "pci-gnt1" },
+ { 23, 2, 1, "pci-gnt2" },
+ { 19, 2, 1, "pci-gnt3" },
+ { 38, 2, 1, "pci-gnt4" },
+ { 29, 2, 0, "pci-req1" },
+ { 31, 2, 0, "pci-req2" },
+ { 3, 2, 0, "pci-req3" },
+ { 37, 2, 0, "pci-req4" },
};
__iomem void *ltq_pci_mapped_cfg;
@@ -157,13 +156,12 @@ static void ltq_pci_setup_gpio(int gpio)
for (i = 0; i < ARRAY_SIZE(ltq_pci_gpio_map); i++) {
if (gpio & (1 << i)) {
ltq_gpio_request(ltq_pci_gpio_map[i].pin,
- ltq_pci_gpio_map[i].alt0,
- ltq_pci_gpio_map[i].alt1,
+ ltq_pci_gpio_map[i].mux,
ltq_pci_gpio_map[i].dir,
ltq_pci_gpio_map[i].name);
}
}
- ltq_gpio_request(21, 0, 0, 1, "pci-reset");
+ ltq_gpio_request(21, 0, 1, "pci-reset");
ltq_pci_req_mask = (gpio >> PCI_REQ_SHIFT) & PCI_REQ_MASK;
}
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