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Merge branch 'lantiq' of git://dev.phrozen.org/mips-next into mips-for-linux-next

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This commit is contained in:
Ralf Baechle 2012-09-27 18:07:25 +02:00
commit 35a041e77a
22 changed files with 2272 additions and 221 deletions
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83
Documentation/devicetree/bindings/pinctrl/lantiq,falcon-pinumx.txt Normal file
View file

@ -0,0 +1,83 @@
Lantiq FALCON pinmux controller
Required properties:
- compatible: "lantiq,pinctrl-falcon"
- reg: Should contain the physical address and length of the gpio/pinmux
register range
Please refer to pinctrl-bindings.txt in this directory for details of the
common pinctrl bindings used by client devices, including the meaning of the
phrase "pin configuration node".
Lantiq's pin configuration nodes act as a container for an abitrary number of
subnodes. Each of these subnodes represents some desired configuration for a
pin, a group, or a list of pins or groups. This configuration can include the
mux function to select on those group(s), and two pin configuration parameters:
pull-up and open-drain
The name of each subnode is not important as long as it is unique; all subnodes
should be enumerated and processed purely based on their content.
Each subnode only affects those parameters that are explicitly listed. In
other words, a subnode that lists a mux function but no pin configuration
parameters implies no information about any pin configuration parameters.
Similarly, a pin subnode that describes a pullup parameter implies no
information about e.g. the mux function.
We support 2 types of nodes.
Definition of mux function groups:
Required subnode-properties:
- lantiq,groups : An array of strings. Each string contains the name of a group.
Valid values for these names are listed below.
- lantiq,function: A string containing the name of the function to mux to the
group. Valid values for function names are listed below.
Valid values for group and function names:
mux groups:
por, ntr, ntr8k, hrst, mdio, bootled, asc0, spi, spi cs0, spi cs1, i2c,
jtag, slic, pcm, asc1
functions:
rst, ntr, mdio, led, asc, spi, i2c, jtag, slic, pcm
Definition of pin configurations:
Required subnode-properties:
- lantiq,pins : An array of strings. Each string contains the name of a pin.
Valid values for these names are listed below.
Optional subnode-properties:
- lantiq,pull: Integer, representing the pull-down/up to apply to the pin.
0: none, 1: down
- lantiq,drive-current: Boolean, enables drive-current
- lantiq,slew-rate: Boolean, enables slew-rate
Example:
pinmux0 {
compatible = "lantiq,pinctrl-falcon";
pinctrl-names = "default";
pinctrl-0 = <&state_default>;
state_default: pinmux {
asc0 {
lantiq,groups = "asc0";
lantiq,function = "asc";
};
ntr {
lantiq,groups = "ntr8k";
lantiq,function = "ntr";
};
i2c {
lantiq,groups = "i2c";
lantiq,function = "i2c";
};
hrst {
lantiq,groups = "hrst";
lantiq,function = "rst";
};
};
};

97
Documentation/devicetree/bindings/pinctrl/lantiq,xway-pinumx.txt Normal file
View file

@ -0,0 +1,97 @@
Lantiq XWAY pinmux controller
Required properties:
- compatible: "lantiq,pinctrl-xway" or "lantiq,pinctrl-xr9"
- reg: Should contain the physical address and length of the gpio/pinmux
register range
Please refer to pinctrl-bindings.txt in this directory for details of the
common pinctrl bindings used by client devices, including the meaning of the
phrase "pin configuration node".
Lantiq's pin configuration nodes act as a container for an abitrary number of
subnodes. Each of these subnodes represents some desired configuration for a
pin, a group, or a list of pins or groups. This configuration can include the
mux function to select on those group(s), and two pin configuration parameters:
pull-up and open-drain
The name of each subnode is not important as long as it is unique; all subnodes
should be enumerated and processed purely based on their content.
Each subnode only affects those parameters that are explicitly listed. In
other words, a subnode that lists a mux function but no pin configuration
parameters implies no information about any pin configuration parameters.
Similarly, a pin subnode that describes a pullup parameter implies no
information about e.g. the mux function.
We support 2 types of nodes.
Definition of mux function groups:
Required subnode-properties:
- lantiq,groups : An array of strings. Each string contains the name of a group.
Valid values for these names are listed below.
- lantiq,function: A string containing the name of the function to mux to the
group. Valid values for function names are listed below.
Valid values for group and function names:
mux groups:
exin0, exin1, exin2, jtag, ebu a23, ebu a24, ebu a25, ebu clk, ebu cs1,
ebu wait, nand ale, nand cs1, nand cle, spi, spi_cs1, spi_cs2, spi_cs3,
spi_cs4, spi_cs5, spi_cs6, asc0, asc0 cts rts, stp, nmi , gpt1, gpt2,
gpt3, clkout0, clkout1, clkout2, clkout3, gnt1, gnt2, gnt3, req1, req2,
req3
additional mux groups (XR9 only):
mdio, nand rdy, nand rd, exin3, exin4, gnt4, req4
functions:
spi, asc, cgu, jtag, exin, stp, gpt, nmi, pci, ebu, mdio
Definition of pin configurations:
Required subnode-properties:
- lantiq,pins : An array of strings. Each string contains the name of a pin.
Valid values for these names are listed below.
Optional subnode-properties:
- lantiq,pull: Integer, representing the pull-down/up to apply to the pin.
0: none, 1: down, 2: up.
- lantiq,open-drain: Boolean, enables open-drain on the defined pin.
Valid values for XWAY pin names:
Pinconf pins can be referenced via the names io0-io31.
Valid values for XR9 pin names:
Pinconf pins can be referenced via the names io0-io55.
Example:
gpio: pinmux@E100B10 {
compatible = "lantiq,pinctrl-xway";
pinctrl-names = "default";
pinctrl-0 = <&state_default>;
#gpio-cells = <2>;
gpio-controller;
reg = <0xE100B10 0xA0>;
state_default: pinmux {
stp {
lantiq,groups = "stp";
lantiq,function = "stp";
};
pci {
lantiq,groups = "gnt1";
lantiq,function = "pci";
};
conf_out {
lantiq,pins = "io4", "io5", "io6"; /* stp */
lantiq,open-drain;
lantiq,pull = <0>;
};
};
};

2
arch/mips/Kconfig
View file

@ -242,6 +242,8 @@ config LANTIQ
select HAVE_MACH_CLKDEV select HAVE_MACH_CLKDEV
select CLKDEV_LOOKUP select CLKDEV_LOOKUP
select USE_OF select USE_OF
select PINCTRL
select PINCTRL_LANTIQ
config LASAT config LASAT
bool "LASAT Networks platforms" bool "LASAT Networks platforms"

2
arch/mips/include/asm/mach-lantiq/falcon/falcon_irq.h
View file

@ -20,4 +20,6 @@
#define MIPS_CPU_TIMER_IRQ 7 #define MIPS_CPU_TIMER_IRQ 7
#define MAX_IM 5
#endif /* _FALCON_IRQ__ */ #endif /* _FALCON_IRQ__ */

4
arch/mips/include/asm/mach-lantiq/falcon/lantiq_soc.h
View file

@ -57,6 +57,10 @@ extern __iomem void *ltq_sys1_membase;
#define ltq_sys1_w32_mask(clear, set, reg) \ #define ltq_sys1_w32_mask(clear, set, reg) \
ltq_sys1_w32((ltq_sys1_r32(reg) & ~(clear)) | (set), reg) ltq_sys1_w32((ltq_sys1_r32(reg) & ~(clear)) | (set), reg)
/* allow the gpio and pinctrl drivers to talk to eachother */
extern int pinctrl_falcon_get_range_size(int id);
extern void pinctrl_falcon_add_gpio_range(struct pinctrl_gpio_range *range);
/* /*
* to keep the irq code generic we need to define this to 0 as falcon * to keep the irq code generic we need to define this to 0 as falcon
* has no EIU/EBU * has no EIU/EBU

5
arch/mips/include/asm/mach-lantiq/gpio.h
View file

@ -1,10 +1,7 @@
#ifndef __ASM_MIPS_MACH_LANTIQ_GPIO_H #ifndef __ASM_MIPS_MACH_LANTIQ_GPIO_H
#define __ASM_MIPS_MACH_LANTIQ_GPIO_H #define __ASM_MIPS_MACH_LANTIQ_GPIO_H
static inline int gpio_to_irq(unsigned int gpio) #define gpio_to_irq __gpio_to_irq
{
return -1;
}
#define gpio_get_value __gpio_get_value #define gpio_get_value __gpio_get_value
#define gpio_set_value __gpio_set_value #define gpio_set_value __gpio_set_value

2
arch/mips/include/asm/mach-lantiq/xway/lantiq_irq.h
View file

@ -21,4 +21,6 @@
#define MIPS_CPU_TIMER_IRQ 7 #define MIPS_CPU_TIMER_IRQ 7
#define MAX_IM 5
#endif #endif

2
arch/mips/lantiq/Kconfig
View file

@ -2,6 +2,7 @@ if LANTIQ
config SOC_TYPE_XWAY config SOC_TYPE_XWAY
bool bool
select PINCTRL_XWAY
default n default n
choice choice
@ -19,6 +20,7 @@ config SOC_XWAY
config SOC_FALCON config SOC_FALCON
bool "FALCON" bool "FALCON"
select PINCTRL_FALCON
endchoice endchoice

5
arch/mips/lantiq/falcon/prom.c
View file

@ -8,6 +8,8 @@
*/ */
#include <linux/kernel.h> #include <linux/kernel.h>
#include <asm/cacheflush.h>
#include <asm/traps.h>
#include <asm/io.h> #include <asm/io.h>
#include <lantiq_soc.h> #include <lantiq_soc.h>
@ -84,4 +86,7 @@ void __init ltq_soc_detect(struct ltq_soc_info *i)
unreachable(); unreachable();
break; break;
} }
board_nmi_handler_setup = ltq_soc_nmi_setup;
board_ejtag_handler_setup = ltq_soc_ejtag_setup;
} }

1
arch/mips/lantiq/falcon/sysctrl.c
View file

@ -171,6 +171,7 @@ static inline void clkdev_add_sys(const char *dev, unsigned int module,
clk->cl.con_id = NULL; clk->cl.con_id = NULL;
clk->cl.clk = clk; clk->cl.clk = clk;
clk->module = module; clk->module = module;
clk->bits = bits;
clk->activate = sysctl_activate; clk->activate = sysctl_activate;
clk->deactivate = sysctl_deactivate; clk->deactivate = sysctl_deactivate;
clk->enable = sysctl_clken; clk->enable = sysctl_clken;

82
arch/mips/lantiq/irq.c
View file

@ -55,8 +55,8 @@
*/ */
#define LTQ_ICU_EBU_IRQ 22 #define LTQ_ICU_EBU_IRQ 22
#define ltq_icu_w32(x, y) ltq_w32((x), ltq_icu_membase + (y)) #define ltq_icu_w32(m, x, y) ltq_w32((x), ltq_icu_membase[m] + (y))
#define ltq_icu_r32(x) ltq_r32(ltq_icu_membase + (x)) #define ltq_icu_r32(m, x) ltq_r32(ltq_icu_membase[m] + (x))
#define ltq_eiu_w32(x, y) ltq_w32((x), ltq_eiu_membase + (y)) #define ltq_eiu_w32(x, y) ltq_w32((x), ltq_eiu_membase + (y))
#define ltq_eiu_r32(x) ltq_r32(ltq_eiu_membase + (x)) #define ltq_eiu_r32(x) ltq_r32(ltq_eiu_membase + (x))
@ -82,17 +82,18 @@ static unsigned short ltq_eiu_irq[MAX_EIU] = {
}; };
static int exin_avail; static int exin_avail;
static void __iomem *ltq_icu_membase; static void __iomem *ltq_icu_membase[MAX_IM];
static void __iomem *ltq_eiu_membase; static void __iomem *ltq_eiu_membase;
static struct irq_domain *ltq_domain;
void ltq_disable_irq(struct irq_data *d) void ltq_disable_irq(struct irq_data *d)
{ {
u32 ier = LTQ_ICU_IM0_IER; u32 ier = LTQ_ICU_IM0_IER;
int offset = d->hwirq - MIPS_CPU_IRQ_CASCADE; int offset = d->hwirq - MIPS_CPU_IRQ_CASCADE;
int im = offset / INT_NUM_IM_OFFSET;
ier += LTQ_ICU_OFFSET * (offset / INT_NUM_IM_OFFSET);
offset %= INT_NUM_IM_OFFSET; offset %= INT_NUM_IM_OFFSET;
ltq_icu_w32(ltq_icu_r32(ier) & ~BIT(offset), ier); ltq_icu_w32(im, ltq_icu_r32(im, ier) & ~BIT(offset), ier);
} }
void ltq_mask_and_ack_irq(struct irq_data *d) void ltq_mask_and_ack_irq(struct irq_data *d)
@ -100,32 +101,31 @@ void ltq_mask_and_ack_irq(struct irq_data *d)
u32 ier = LTQ_ICU_IM0_IER; u32 ier = LTQ_ICU_IM0_IER;
u32 isr = LTQ_ICU_IM0_ISR; u32 isr = LTQ_ICU_IM0_ISR;
int offset = d->hwirq - MIPS_CPU_IRQ_CASCADE; int offset = d->hwirq - MIPS_CPU_IRQ_CASCADE;
int im = offset / INT_NUM_IM_OFFSET;
ier += LTQ_ICU_OFFSET * (offset / INT_NUM_IM_OFFSET);
isr += LTQ_ICU_OFFSET * (offset / INT_NUM_IM_OFFSET);
offset %= INT_NUM_IM_OFFSET; offset %= INT_NUM_IM_OFFSET;
ltq_icu_w32(ltq_icu_r32(ier) & ~BIT(offset), ier); ltq_icu_w32(im, ltq_icu_r32(im, ier) & ~BIT(offset), ier);
ltq_icu_w32(BIT(offset), isr); ltq_icu_w32(im, BIT(offset), isr);
} }
static void ltq_ack_irq(struct irq_data *d) static void ltq_ack_irq(struct irq_data *d)
{ {
u32 isr = LTQ_ICU_IM0_ISR; u32 isr = LTQ_ICU_IM0_ISR;
int offset = d->hwirq - MIPS_CPU_IRQ_CASCADE; int offset = d->hwirq - MIPS_CPU_IRQ_CASCADE;
int im = offset / INT_NUM_IM_OFFSET;
isr += LTQ_ICU_OFFSET * (offset / INT_NUM_IM_OFFSET);
offset %= INT_NUM_IM_OFFSET; offset %= INT_NUM_IM_OFFSET;
ltq_icu_w32(BIT(offset), isr); ltq_icu_w32(im, BIT(offset), isr);
} }
void ltq_enable_irq(struct irq_data *d) void ltq_enable_irq(struct irq_data *d)
{ {
u32 ier = LTQ_ICU_IM0_IER; u32 ier = LTQ_ICU_IM0_IER;
int offset = d->hwirq - MIPS_CPU_IRQ_CASCADE; int offset = d->hwirq - MIPS_CPU_IRQ_CASCADE;
int im = offset / INT_NUM_IM_OFFSET;
ier += LTQ_ICU_OFFSET * (offset / INT_NUM_IM_OFFSET);
offset %= INT_NUM_IM_OFFSET; offset %= INT_NUM_IM_OFFSET;
ltq_icu_w32(ltq_icu_r32(ier) | BIT(offset), ier); ltq_icu_w32(im, ltq_icu_r32(im, ier) | BIT(offset), ier);
} }
static unsigned int ltq_startup_eiu_irq(struct irq_data *d) static unsigned int ltq_startup_eiu_irq(struct irq_data *d)
@ -192,7 +192,7 @@ static void ltq_hw_irqdispatch(int module)
{ {
u32 irq; u32 irq;
irq = ltq_icu_r32(LTQ_ICU_IM0_IOSR + (module * LTQ_ICU_OFFSET)); irq = ltq_icu_r32(module, LTQ_ICU_IM0_IOSR);
if (irq == 0) if (irq == 0)
return; return;
@ -220,10 +220,14 @@ DEFINE_HWx_IRQDISPATCH(2)
DEFINE_HWx_IRQDISPATCH(3) DEFINE_HWx_IRQDISPATCH(3)
DEFINE_HWx_IRQDISPATCH(4) DEFINE_HWx_IRQDISPATCH(4)
#if MIPS_CPU_TIMER_IRQ == 7
static void ltq_hw5_irqdispatch(void) static void ltq_hw5_irqdispatch(void)
{ {
do_IRQ(MIPS_CPU_TIMER_IRQ); do_IRQ(MIPS_CPU_TIMER_IRQ);
} }
#else
DEFINE_HWx_IRQDISPATCH(5)
#endif
#ifdef CONFIG_MIPS_MT_SMP #ifdef CONFIG_MIPS_MT_SMP
void __init arch_init_ipiirq(int irq, struct irqaction *action) void __init arch_init_ipiirq(int irq, struct irqaction *action)
@ -271,11 +275,11 @@ asmlinkage void plat_irq_dispatch(void)
unsigned int pending = read_c0_status() & read_c0_cause() & ST0_IM; unsigned int pending = read_c0_status() & read_c0_cause() & ST0_IM;
unsigned int i; unsigned int i;
if (pending & CAUSEF_IP7) { if ((MIPS_CPU_TIMER_IRQ == 7) && (pending & CAUSEF_IP7)) {
do_IRQ(MIPS_CPU_TIMER_IRQ); do_IRQ(MIPS_CPU_TIMER_IRQ);
goto out; goto out;
} else { } else {
for (i = 0; i < 5; i++) { for (i = 0; i < MAX_IM; i++) {
if (pending & (CAUSEF_IP2 << i)) { if (pending & (CAUSEF_IP2 << i)) {
ltq_hw_irqdispatch(i); ltq_hw_irqdispatch(i);
goto out; goto out;
@ -293,6 +297,9 @@ static int icu_map(struct irq_domain *d, unsigned int irq, irq_hw_number_t hw)
struct irq_chip *chip = &ltq_irq_type; struct irq_chip *chip = &ltq_irq_type;
int i; int i;
if (hw < MIPS_CPU_IRQ_CASCADE)
return 0;
for (i = 0; i < exin_avail; i++) for (i = 0; i < exin_avail; i++)
if (hw == ltq_eiu_irq[i]) if (hw == ltq_eiu_irq[i])
chip = &ltq_eiu_type; chip = &ltq_eiu_type;
@ -318,19 +325,23 @@ int __init icu_of_init(struct device_node *node, struct device_node *parent)
struct resource res; struct resource res;
int i; int i;
if (of_address_to_resource(node, 0, &res)) for (i = 0; i < MAX_IM; i++) {
panic("Failed to get icu memory range"); if (of_address_to_resource(node, i, &res))
panic("Failed to get icu memory range");
if (request_mem_region(res.start, resource_size(&res), res.name) < 0) if (request_mem_region(res.start, resource_size(&res),
pr_err("Failed to request icu memory"); res.name) < 0)
pr_err("Failed to request icu memory");
ltq_icu_membase = ioremap_nocache(res.start, resource_size(&res)); ltq_icu_membase[i] = ioremap_nocache(res.start,
if (!ltq_icu_membase) resource_size(&res));
panic("Failed to remap icu memory"); if (!ltq_icu_membase[i])
panic("Failed to remap icu memory");
}
/* the external interrupts are optional and xway only */ /* the external interrupts are optional and xway only */
eiu_node = of_find_compatible_node(NULL, NULL, "lantiq,eiu"); eiu_node = of_find_compatible_node(NULL, NULL, "lantiq,eiu");
if (eiu_node && of_address_to_resource(eiu_node, 0, &res)) { if (eiu_node && !of_address_to_resource(eiu_node, 0, &res)) {
/* find out how many external irq sources we have */ /* find out how many external irq sources we have */
const __be32 *count = of_get_property(node, const __be32 *count = of_get_property(node,
"lantiq,count", NULL); "lantiq,count", NULL);
@ -351,17 +362,17 @@ int __init icu_of_init(struct device_node *node, struct device_node *parent)
} }
/* turn off all irqs by default */ /* turn off all irqs by default */
for (i = 0; i < 5; i++) { for (i = 0; i < MAX_IM; i++) {
/* make sure all irqs are turned off by default */ /* make sure all irqs are turned off by default */
ltq_icu_w32(0, LTQ_ICU_IM0_IER + (i * LTQ_ICU_OFFSET)); ltq_icu_w32(i, 0, LTQ_ICU_IM0_IER);
/* clear all possibly pending interrupts */ /* clear all possibly pending interrupts */
ltq_icu_w32(~0, LTQ_ICU_IM0_ISR + (i * LTQ_ICU_OFFSET)); ltq_icu_w32(i, ~0, LTQ_ICU_IM0_ISR);
} }
mips_cpu_irq_init(); mips_cpu_irq_init();
for (i = 2; i <= 6; i++) for (i = 0; i < MAX_IM; i++)
setup_irq(i, &cascade); setup_irq(i + 2, &cascade);
if (cpu_has_vint) { if (cpu_has_vint) {
pr_info("Setting up vectored interrupts\n"); pr_info("Setting up vectored interrupts\n");
@ -373,7 +384,8 @@ int __init icu_of_init(struct device_node *node, struct device_node *parent)
set_vi_handler(7, ltq_hw5_irqdispatch); set_vi_handler(7, ltq_hw5_irqdispatch);
} }
irq_domain_add_linear(node, 6 * INT_NUM_IM_OFFSET, ltq_domain = irq_domain_add_linear(node,
(MAX_IM * INT_NUM_IM_OFFSET) + MIPS_CPU_IRQ_CASCADE,
&irq_domain_ops, 0); &irq_domain_ops, 0);
#if defined(CONFIG_MIPS_MT_SMP) #if defined(CONFIG_MIPS_MT_SMP)
@ -397,12 +409,20 @@ int __init icu_of_init(struct device_node *node, struct device_node *parent)
/* tell oprofile which irq to use */ /* tell oprofile which irq to use */
cp0_perfcount_irq = LTQ_PERF_IRQ; cp0_perfcount_irq = LTQ_PERF_IRQ;
/*
* if the timer irq is not one of the mips irqs we need to
* create a mapping
*/
if (MIPS_CPU_TIMER_IRQ != 7)
irq_create_mapping(ltq_domain, MIPS_CPU_TIMER_IRQ);
return 0; return 0;
} }
unsigned int __cpuinit get_c0_compare_int(void) unsigned int __cpuinit get_c0_compare_int(void)
{ {
return CP0_LEGACY_COMPARE_IRQ; return MIPS_CPU_TIMER_IRQ;
} }
static struct of_device_id __initdata of_irq_ids[] = { static struct of_device_id __initdata of_irq_ids[] = {

2
arch/mips/lantiq/xway/Makefile
View file

@ -1 +1 @@
obj-y := prom.o sysctrl.o clk.o reset.o gpio.o dma.o obj-y := prom.o sysctrl.o clk.o reset.o dma.o gptu.o

183
arch/mips/lantiq/xway/gpio.c
View file

@ -1,183 +0,0 @@
/*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 as published
* by the Free Software Foundation.
*
* Copyright (C) 2010 John Crispin <blogic@openwrt.org>
*/
#include <linux/slab.h>
#include <linux/export.h>
#include <linux/platform_device.h>
#include <linux/gpio.h>
#include <linux/ioport.h>
#include <linux/io.h>
#include <lantiq_soc.h>
#define LTQ_GPIO_OUT 0x00
#define LTQ_GPIO_IN 0x04
#define LTQ_GPIO_DIR 0x08
#define LTQ_GPIO_ALTSEL0 0x0C
#define LTQ_GPIO_ALTSEL1 0x10
#define LTQ_GPIO_OD 0x14
#define PINS_PER_PORT 16
#define MAX_PORTS 3
#define ltq_gpio_getbit(m, r, p) (!!(ltq_r32(m + r) & (1 << p)))
#define ltq_gpio_setbit(m, r, p) ltq_w32_mask(0, (1 << p), m + r)
#define ltq_gpio_clearbit(m, r, p) ltq_w32_mask((1 << p), 0, m + r)
struct ltq_gpio {
void __iomem *membase;
struct gpio_chip chip;
};
static struct ltq_gpio ltq_gpio_port[MAX_PORTS];
int ltq_gpio_request(unsigned int pin, unsigned int alt0,
unsigned int alt1, unsigned int dir, const char *name)
{
int id = 0;
if (pin >= (MAX_PORTS * PINS_PER_PORT))
return -EINVAL;
if (gpio_request(pin, name)) {
pr_err("failed to setup lantiq gpio: %s\n", name);
return -EBUSY;
}
if (dir)
gpio_direction_output(pin, 1);
else
gpio_direction_input(pin);
while (pin >= PINS_PER_PORT) {
pin -= PINS_PER_PORT;
id++;
}
if (alt0)
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)
ltq_gpio_setbit(ltq_gpio_port[id].membase,
LTQ_GPIO_ALTSEL1, pin);
else
ltq_gpio_clearbit(ltq_gpio_port[id].membase,
LTQ_GPIO_ALTSEL1, pin);
return 0;
}
EXPORT_SYMBOL(ltq_gpio_request);
static void ltq_gpio_set(struct gpio_chip *chip, unsigned int offset, int value)
{
struct ltq_gpio *ltq_gpio = container_of(chip, struct ltq_gpio, chip);
if (value)
ltq_gpio_setbit(ltq_gpio->membase, LTQ_GPIO_OUT, offset);
else
ltq_gpio_clearbit(ltq_gpio->membase, LTQ_GPIO_OUT, offset);
}
static int ltq_gpio_get(struct gpio_chip *chip, unsigned int offset)
{
struct ltq_gpio *ltq_gpio = container_of(chip, struct ltq_gpio, chip);
return ltq_gpio_getbit(ltq_gpio->membase, LTQ_GPIO_IN, offset);
}
static int ltq_gpio_direction_input(struct gpio_chip *chip, unsigned int offset)
{
struct ltq_gpio *ltq_gpio = container_of(chip, struct ltq_gpio, chip);
ltq_gpio_clearbit(ltq_gpio->membase, LTQ_GPIO_OD, offset);
ltq_gpio_clearbit(ltq_gpio->membase, LTQ_GPIO_DIR, offset);
return 0;
}
static int ltq_gpio_direction_output(struct gpio_chip *chip,
unsigned int offset, int value)
{
struct ltq_gpio *ltq_gpio = container_of(chip, struct ltq_gpio, chip);
ltq_gpio_setbit(ltq_gpio->membase, LTQ_GPIO_OD, offset);
ltq_gpio_setbit(ltq_gpio->membase, LTQ_GPIO_DIR, offset);
ltq_gpio_set(chip, offset, value);
return 0;
}
static int ltq_gpio_req(struct gpio_chip *chip, unsigned offset)
{
struct ltq_gpio *ltq_gpio = container_of(chip, struct ltq_gpio, chip);
ltq_gpio_clearbit(ltq_gpio->membase, LTQ_GPIO_ALTSEL0, offset);
ltq_gpio_clearbit(ltq_gpio->membase, LTQ_GPIO_ALTSEL1, offset);
return 0;
}
static int ltq_gpio_probe(struct platform_device *pdev)
{
struct resource *res;
if (pdev->id >= MAX_PORTS) {
dev_err(&pdev->dev, "invalid gpio port %d\n",
pdev->id);
return -EINVAL;
}
res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
if (!res) {
dev_err(&pdev->dev, "failed to get memory for gpio port %d\n",
pdev->id);
return -ENOENT;
}
res = devm_request_mem_region(&pdev->dev, res->start,
resource_size(res), dev_name(&pdev->dev));
if (!res) {
dev_err(&pdev->dev,
"failed to request memory for gpio port %d\n",
pdev->id);
return -EBUSY;
}
ltq_gpio_port[pdev->id].membase = devm_ioremap_nocache(&pdev->dev,
res->start, resource_size(res));
if (!ltq_gpio_port[pdev->id].membase) {
dev_err(&pdev->dev, "failed to remap memory for gpio port %d\n",
pdev->id);
return -ENOMEM;
}
ltq_gpio_port[pdev->id].chip.label = "ltq_gpio";
ltq_gpio_port[pdev->id].chip.direction_input = ltq_gpio_direction_input;
ltq_gpio_port[pdev->id].chip.direction_output =
ltq_gpio_direction_output;
ltq_gpio_port[pdev->id].chip.get = ltq_gpio_get;
ltq_gpio_port[pdev->id].chip.set = ltq_gpio_set;
ltq_gpio_port[pdev->id].chip.request = ltq_gpio_req;
ltq_gpio_port[pdev->id].chip.base = PINS_PER_PORT * pdev->id;
ltq_gpio_port[pdev->id].chip.ngpio = PINS_PER_PORT;
platform_set_drvdata(pdev, &ltq_gpio_port[pdev->id]);
return gpiochip_add(&ltq_gpio_port[pdev->id].chip);
}
static struct platform_driver
ltq_gpio_driver = {
.probe = ltq_gpio_probe,
.driver = {
.name = "ltq_gpio",
.owner = THIS_MODULE,
},
};
int __init ltq_gpio_init(void)
{
int ret = platform_driver_register(&ltq_gpio_driver);
if (ret)
pr_info("ltq_gpio : Error registering platform driver!");
return ret;
}
postcore_initcall(ltq_gpio_init);

214
arch/mips/lantiq/xway/gptu.c Normal file
View file

@ -0,0 +1,214 @@
/*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 as published
* by the Free Software Foundation.
*
* Copyright (C) 2012 John Crispin <blogic@openwrt.org>
* Copyright (C) 2012 Lantiq GmbH
*/
#include <linux/interrupt.h>
#include <linux/ioport.h>
#include <linux/module.h>
#include <linux/of_platform.h>
#include <linux/of_irq.h>
#include <lantiq_soc.h>
#include "../clk.h"
/* the magic ID byte of the core */
#define GPTU_MAGIC 0x59
/* clock control register */
#define GPTU_CLC 0x00
/* id register */
#define GPTU_ID 0x08
/* interrupt node enable */
#define GPTU_IRNEN 0xf4
/* interrupt control register */
#define GPTU_IRCR 0xf8
/* interrupt capture register */
#define GPTU_IRNCR 0xfc
/* there are 3 identical blocks of 2 timers. calculate register offsets */
#define GPTU_SHIFT(x) (x % 2 ? 4 : 0)
#define GPTU_BASE(x) (((x >> 1) * 0x20) + 0x10)
/* timer control register */
#define GPTU_CON(x) (GPTU_BASE(x) + GPTU_SHIFT(x) + 0x00)
/* timer auto reload register */
#define GPTU_RUN(x) (GPTU_BASE(x) + GPTU_SHIFT(x) + 0x08)
/* timer manual reload register */
#define GPTU_RLD(x) (GPTU_BASE(x) + GPTU_SHIFT(x) + 0x10)
/* timer count register */
#define GPTU_CNT(x) (GPTU_BASE(x) + GPTU_SHIFT(x) + 0x18)
/* GPTU_CON(x) */
#define CON_CNT BIT(2)
#define CON_EDGE_ANY (BIT(7) | BIT(6))
#define CON_SYNC BIT(8)
#define CON_CLK_INT BIT(10)
/* GPTU_RUN(x) */
#define RUN_SEN BIT(0)
#define RUN_RL BIT(2)
/* set clock to runmode */
#define CLC_RMC BIT(8)
/* bring core out of suspend */
#define CLC_SUSPEND BIT(4)
/* the disable bit */
#define CLC_DISABLE BIT(0)
#define gptu_w32(x, y) ltq_w32((x), gptu_membase + (y))
#define gptu_r32(x) ltq_r32(gptu_membase + (x))
enum gptu_timer {
TIMER1A = 0,
TIMER1B,
TIMER2A,
TIMER2B,
TIMER3A,
TIMER3B
};
static void __iomem *gptu_membase;
static struct resource irqres[6];
static irqreturn_t timer_irq_handler(int irq, void *priv)
{
int timer = irq - irqres[0].start;
gptu_w32(1 << timer, GPTU_IRNCR);
return IRQ_HANDLED;
}
static void gptu_hwinit(void)
{
gptu_w32(0x00, GPTU_IRNEN);
gptu_w32(0xff, GPTU_IRNCR);
gptu_w32(CLC_RMC | CLC_SUSPEND, GPTU_CLC);
}
static void gptu_hwexit(void)
{
gptu_w32(0x00, GPTU_IRNEN);
gptu_w32(0xff, GPTU_IRNCR);
gptu_w32(CLC_DISABLE, GPTU_CLC);
}
static int gptu_enable(struct clk *clk)
{
int ret = request_irq(irqres[clk->bits].start, timer_irq_handler,
IRQF_TIMER, "gtpu", NULL);
if (ret) {
pr_err("gptu: failed to request irq\n");
return ret;
}
gptu_w32(CON_CNT | CON_EDGE_ANY | CON_SYNC | CON_CLK_INT,
GPTU_CON(clk->bits));
gptu_w32(1, GPTU_RLD(clk->bits));
gptu_w32(gptu_r32(GPTU_IRNEN) | BIT(clk->bits), GPTU_IRNEN);
gptu_w32(RUN_SEN | RUN_RL, GPTU_RUN(clk->bits));
return 0;
}
static void gptu_disable(struct clk *clk)
{
gptu_w32(0, GPTU_RUN(clk->bits));
gptu_w32(0, GPTU_CON(clk->bits));
gptu_w32(0, GPTU_RLD(clk->bits));
gptu_w32(gptu_r32(GPTU_IRNEN) & ~BIT(clk->bits), GPTU_IRNEN);
free_irq(irqres[clk->bits].start, NULL);
}
static inline void clkdev_add_gptu(struct device *dev, const char *con,
unsigned int timer)
{
struct clk *clk = kzalloc(sizeof(struct clk), GFP_KERNEL);
clk->cl.dev_id = dev_name(dev);
clk->cl.con_id = con;
clk->cl.clk = clk;
clk->enable = gptu_enable;
clk->disable = gptu_disable;
clk->bits = timer;
clkdev_add(&clk->cl);
}
static int __devinit gptu_probe(struct platform_device *pdev)
{
struct clk *clk;
struct resource *res;
if (of_irq_to_resource_table(pdev->dev.of_node, irqres, 6) != 6) {
dev_err(&pdev->dev, "Failed to get IRQ list\n");
return -EINVAL;
}
res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
if (!res) {
dev_err(&pdev->dev, "Failed to get resource\n");
return -ENOMEM;
}
/* remap gptu register range */
gptu_membase = devm_request_and_ioremap(&pdev->dev, res);
if (!gptu_membase) {
dev_err(&pdev->dev, "Failed to remap resource\n");
return -ENOMEM;
}
/* enable our clock */
clk = clk_get(&pdev->dev, NULL);
if (IS_ERR(clk)) {
dev_err(&pdev->dev, "Failed to get clock\n");
return -ENOENT;
}
clk_enable(clk);
/* power up the core */
gptu_hwinit();
/* the gptu has a ID register */
if (((gptu_r32(GPTU_ID) >> 8) & 0xff) != GPTU_MAGIC) {
dev_err(&pdev->dev, "Failed to find magic\n");
gptu_hwexit();
return -ENAVAIL;
}
/* register the clocks */
clkdev_add_gptu(&pdev->dev, "timer1a", TIMER1A);
clkdev_add_gptu(&pdev->dev, "timer1b", TIMER1B);
clkdev_add_gptu(&pdev->dev, "timer2a", TIMER2A);
clkdev_add_gptu(&pdev->dev, "timer2b", TIMER2B);
clkdev_add_gptu(&pdev->dev, "timer3a", TIMER3A);
clkdev_add_gptu(&pdev->dev, "timer3b", TIMER3B);
dev_info(&pdev->dev, "gptu: 6 timers loaded\n");
return 0;
}
static const struct of_device_id gptu_match[] = {
{ .compatible = "lantiq,gptu-xway" },
{},
};
MODULE_DEVICE_TABLE(of, dma_match);
static struct platform_driver dma_driver = {
.probe = gptu_probe,
.driver = {
.name = "gptu-xway",
.owner = THIS_MODULE,
.of_match_table = gptu_match,
},
};
int __init gptu_init(void)
{
int ret = platform_driver_register(&dma_driver);
if (ret)
pr_info("gptu: Error registering platform driver\n");
return ret;
}
arch_initcall(gptu_init);

3
arch/mips/lantiq/xway/sysctrl.c
View file

@ -145,7 +145,8 @@ static int pci_enable(struct clk *clk)
{ {
unsigned int val = ltq_cgu_r32(ifccr); unsigned int val = ltq_cgu_r32(ifccr);
/* set bus clock speed */ /* set bus clock speed */
if (of_machine_is_compatible("lantiq,ar9")) { if (of_machine_is_compatible("lantiq,ar9") ||
of_machine_is_compatible("lantiq,vr9")) {
val &= ~0x1f00000; val &= ~0x1f00000;
if (clk->rate == CLOCK_33M) if (clk->rate == CLOCK_33M)
val |= 0xe00000; val |= 0xe00000;

2
drivers/gpio/gpio-stp-xway.c
View file

@ -82,7 +82,7 @@ struct xway_stp {
struct gpio_chip gc; struct gpio_chip gc;
void __iomem *virt; void __iomem *virt;
u32 edge; /* rising or falling edge triggered shift register */ u32 edge; /* rising or falling edge triggered shift register */
u16 shadow; /* shadow the shift registers state */ u32 shadow; /* shadow the shift registers state */
u8 groups; /* we can drive 1-3 groups of 8bit each */ u8 groups; /* we can drive 1-3 groups of 8bit each */
u8 dsl; /* the 2 LSBs can be driven by the dsl core */ u8 dsl; /* the 2 LSBs can be driven by the dsl core */
u8 phy1; /* 3 bits can be driven by phy1 */ u8 phy1; /* 3 bits can be driven by phy1 */

16
drivers/pinctrl/Kconfig
View file

@ -55,10 +55,21 @@ config PINCTRL_IMX6Q
help help
Say Y here to enable the imx6q pinctrl driver Say Y here to enable the imx6q pinctrl driver
config PINCTRL_LANTIQ
bool
depends on LANTIQ
select PINMUX
select PINCONF
config PINCTRL_PXA3xx config PINCTRL_PXA3xx
bool bool
select PINMUX select PINMUX
config PINCTRL_FALCON
bool
depends on SOC_FALCON
depends on PINCTRL_LANTIQ
config PINCTRL_MMP2 config PINCTRL_MMP2
bool "MMP2 pin controller driver" bool "MMP2 pin controller driver"
depends on ARCH_MMP depends on ARCH_MMP
@ -147,6 +158,11 @@ config PINCTRL_COH901
source "drivers/pinctrl/spear/Kconfig" source "drivers/pinctrl/spear/Kconfig"
config PINCTRL_XWAY
bool
depends on SOC_TYPE_XWAY
depends on PINCTRL_LANTIQ
endmenu endmenu
endif endif

3
drivers/pinctrl/Makefile
View file

@ -14,6 +14,7 @@ obj-$(CONFIG_PINCTRL_IMX51) += pinctrl-imx51.o
obj-$(CONFIG_PINCTRL_IMX53) += pinctrl-imx53.o obj-$(CONFIG_PINCTRL_IMX53) += pinctrl-imx53.o
obj-$(CONFIG_PINCTRL_IMX6Q) += pinctrl-imx6q.o obj-$(CONFIG_PINCTRL_IMX6Q) += pinctrl-imx6q.o
obj-$(CONFIG_PINCTRL_PXA3xx) += pinctrl-pxa3xx.o obj-$(CONFIG_PINCTRL_PXA3xx) += pinctrl-pxa3xx.o
obj-$(CONFIG_PINCTRL_FALCON) += pinctrl-falcon.o
obj-$(CONFIG_PINCTRL_MMP2) += pinctrl-mmp2.o obj-$(CONFIG_PINCTRL_MMP2) += pinctrl-mmp2.o
obj-$(CONFIG_PINCTRL_MXS) += pinctrl-mxs.o obj-$(CONFIG_PINCTRL_MXS) += pinctrl-mxs.o
obj-$(CONFIG_PINCTRL_IMX23) += pinctrl-imx23.o obj-$(CONFIG_PINCTRL_IMX23) += pinctrl-imx23.o
@ -29,5 +30,7 @@ obj-$(CONFIG_PINCTRL_TEGRA20) += pinctrl-tegra20.o
obj-$(CONFIG_PINCTRL_TEGRA30) += pinctrl-tegra30.o obj-$(CONFIG_PINCTRL_TEGRA30) += pinctrl-tegra30.o
obj-$(CONFIG_PINCTRL_U300) += pinctrl-u300.o obj-$(CONFIG_PINCTRL_U300) += pinctrl-u300.o
obj-$(CONFIG_PINCTRL_COH901) += pinctrl-coh901.o obj-$(CONFIG_PINCTRL_COH901) += pinctrl-coh901.o
obj-$(CONFIG_PINCTRL_XWAY) += pinctrl-xway.o
obj-$(CONFIG_PINCTRL_LANTIQ) += pinctrl-lantiq.o
obj-$(CONFIG_PLAT_SPEAR) += spear/ obj-$(CONFIG_PLAT_SPEAR) += spear/

468
drivers/pinctrl/pinctrl-falcon.c Normal file
View file

@ -0,0 +1,468 @@
/*
* linux/drivers/pinctrl/pinmux-falcon.c
* based on linux/drivers/pinctrl/pinmux-pxa910.c
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 as published
* by the Free Software Foundation.
*
* Copyright (C) 2012 Thomas Langer <thomas.langer@lantiq.com>
* Copyright (C) 2012 John Crispin <blogic@openwrt.org>
*/
#include <linux/gpio.h>
#include <linux/interrupt.h>
#include <linux/slab.h>
#include <linux/export.h>
#include <linux/err.h>
#include <linux/module.h>
#include <linux/of.h>
#include <linux/of_platform.h>
#include <linux/of_address.h>
#include <linux/of_gpio.h>
#include <linux/platform_device.h>
#include "pinctrl-lantiq.h"
#include <lantiq_soc.h>
/* Multiplexer Control Register */
#define LTQ_PADC_MUX(x) (x * 0x4)
/* Pull Up Enable Register */
#define LTQ_PADC_PUEN 0x80
/* Pull Down Enable Register */
#define LTQ_PADC_PDEN 0x84
/* Slew Rate Control Register */
#define LTQ_PADC_SRC 0x88
/* Drive Current Control Register */
#define LTQ_PADC_DCC 0x8C
/* Pad Control Availability Register */
#define LTQ_PADC_AVAIL 0xF0
#define pad_r32(p, reg) ltq_r32(p + reg)
#define pad_w32(p, val, reg) ltq_w32(val, p + reg)
#define pad_w32_mask(c, clear, set, reg) \
pad_w32(c, (pad_r32(c, reg) & ~(clear)) | (set), reg)
#define pad_getbit(m, r, p) (!!(ltq_r32(m + r) & (1 << p)))
#define PORTS 5
#define PINS 32
#define PORT(x) (x / PINS)
#define PORT_PIN(x) (x % PINS)
#define MFP_FALCON(a, f0, f1, f2, f3) \
{ \
.name = #a, \
.pin = a, \
.func = { \
FALCON_MUX_##f0, \
FALCON_MUX_##f1, \
FALCON_MUX_##f2, \
FALCON_MUX_##f3, \
}, \
}
#define GRP_MUX(a, m, p) \
{ \
.name = a, \
.mux = FALCON_MUX_##m, \
.pins = p, \
.npins = ARRAY_SIZE(p), \
}
enum falcon_mux {
FALCON_MUX_GPIO = 0,
FALCON_MUX_RST,
FALCON_MUX_NTR,
FALCON_MUX_MDIO,
FALCON_MUX_LED,
FALCON_MUX_SPI,
FALCON_MUX_ASC,
FALCON_MUX_I2C,
FALCON_MUX_HOSTIF,
FALCON_MUX_SLIC,
FALCON_MUX_JTAG,
FALCON_MUX_PCM,
FALCON_MUX_MII,
FALCON_MUX_PHY,
FALCON_MUX_NONE = 0xffff,
};
static struct pinctrl_pin_desc falcon_pads[PORTS * PINS];
static int pad_count[PORTS];
static void lantiq_load_pin_desc(struct pinctrl_pin_desc *d, int bank, int len)
{
int base = bank * PINS;
int i;
for (i = 0; i < len; i++) {
/* strlen("ioXYZ") + 1 = 6 */
char *name = kzalloc(6, GFP_KERNEL);
snprintf(name, 6, "io%d", base + i);
d[i].number = base + i;
d[i].name = name;
}
pad_count[bank] = len;
}
static struct ltq_mfp_pin falcon_mfp[] = {
/* pin f0 f1 f2 f3 */
MFP_FALCON(GPIO0, RST, GPIO, NONE, NONE),
MFP_FALCON(GPIO1, GPIO, GPIO, NONE, NONE),
MFP_FALCON(GPIO2, GPIO, GPIO, NONE, NONE),
MFP_FALCON(GPIO3, GPIO, GPIO, NONE, NONE),
MFP_FALCON(GPIO4, NTR, GPIO, NONE, NONE),
MFP_FALCON(GPIO5, NTR, GPIO, NONE, NONE),
MFP_FALCON(GPIO6, RST, GPIO, NONE, NONE),
MFP_FALCON(GPIO7, MDIO, GPIO, NONE, NONE),
MFP_FALCON(GPIO8, MDIO, GPIO, NONE, NONE),
MFP_FALCON(GPIO9, LED, GPIO, NONE, NONE),
MFP_FALCON(GPIO10, LED, GPIO, NONE, NONE),
MFP_FALCON(GPIO11, LED, GPIO, NONE, NONE),
MFP_FALCON(GPIO12, LED, GPIO, NONE, NONE),
MFP_FALCON(GPIO13, LED, GPIO, NONE, NONE),
MFP_FALCON(GPIO14, LED, GPIO, NONE, NONE),
MFP_FALCON(GPIO32, ASC, GPIO, NONE, NONE),
MFP_FALCON(GPIO33, ASC, GPIO, NONE, NONE),
MFP_FALCON(GPIO34, SPI, GPIO, NONE, NONE),
MFP_FALCON(GPIO35, SPI, GPIO, NONE, NONE),
MFP_FALCON(GPIO36, SPI, GPIO, NONE, NONE),
MFP_FALCON(GPIO37, SPI, GPIO, NONE, NONE),
MFP_FALCON(GPIO38, SPI, GPIO, NONE, NONE),
MFP_FALCON(GPIO39, I2C, GPIO, NONE, NONE),
MFP_FALCON(GPIO40, I2C, GPIO, NONE, NONE),
MFP_FALCON(GPIO41, HOSTIF, GPIO, HOSTIF, JTAG),
MFP_FALCON(GPIO42, HOSTIF, GPIO, HOSTIF, NONE),
MFP_FALCON(GPIO43, SLIC, GPIO, NONE, NONE),
MFP_FALCON(GPIO44, SLIC, GPIO, PCM, ASC),
MFP_FALCON(GPIO45, SLIC, GPIO, PCM, ASC),
MFP_FALCON(GPIO64, MII, GPIO, NONE, NONE),
MFP_FALCON(GPIO65, MII, GPIO, NONE, NONE),
MFP_FALCON(GPIO66, MII, GPIO, NONE, NONE),
MFP_FALCON(GPIO67, MII, GPIO, NONE, NONE),
MFP_FALCON(GPIO68, MII, GPIO, NONE, NONE),
MFP_FALCON(GPIO69, MII, GPIO, NONE, NONE),
MFP_FALCON(GPIO70, MII, GPIO, NONE, NONE),
MFP_FALCON(GPIO71, MII, GPIO, NONE, NONE),
MFP_FALCON(GPIO72, MII, GPIO, NONE, NONE),
MFP_FALCON(GPIO73, MII, GPIO, NONE, NONE),
MFP_FALCON(GPIO74, MII, GPIO, NONE, NONE),
MFP_FALCON(GPIO75, MII, GPIO, NONE, NONE),
MFP_FALCON(GPIO76, MII, GPIO, NONE, NONE),
MFP_FALCON(GPIO77, MII, GPIO, NONE, NONE),
MFP_FALCON(GPIO78, MII, GPIO, NONE, NONE),
MFP_FALCON(GPIO79, MII, GPIO, NONE, NONE),
MFP_FALCON(GPIO80, MII, GPIO, NONE, NONE),
MFP_FALCON(GPIO81, MII, GPIO, NONE, NONE),
MFP_FALCON(GPIO82, MII, GPIO, NONE, NONE),
MFP_FALCON(GPIO83, MII, GPIO, NONE, NONE),
MFP_FALCON(GPIO84, MII, GPIO, NONE, NONE),
MFP_FALCON(GPIO85, MII, GPIO, NONE, NONE),
MFP_FALCON(GPIO86, MII, GPIO, NONE, NONE),
MFP_FALCON(GPIO87, MII, GPIO, NONE, NONE),
MFP_FALCON(GPIO88, PHY, GPIO, NONE, NONE),
};
static const unsigned pins_por[] = {GPIO0};
static const unsigned pins_ntr[] = {GPIO4};
static const unsigned pins_ntr8k[] = {GPIO5};
static const unsigned pins_hrst[] = {GPIO6};
static const unsigned pins_mdio[] = {GPIO7, GPIO8};
static const unsigned pins_bled[] = {GPIO7, GPIO10, GPIO11,
GPIO12, GPIO13, GPIO14};
static const unsigned pins_asc0[] = {GPIO32, GPIO33};
static const unsigned pins_spi[] = {GPIO34, GPIO35, GPIO36};
static const unsigned pins_spi_cs0[] = {GPIO37};
static const unsigned pins_spi_cs1[] = {GPIO38};
static const unsigned pins_i2c[] = {GPIO39, GPIO40};
static const unsigned pins_jtag[] = {GPIO41};
static const unsigned pins_slic[] = {GPIO43, GPIO44, GPIO45};
static const unsigned pins_pcm[] = {GPIO44, GPIO45};
static const unsigned pins_asc1[] = {GPIO44, GPIO45};
static struct ltq_pin_group falcon_grps[] = {
GRP_MUX("por", RST, pins_por),
GRP_MUX("ntr", NTR, pins_ntr),
GRP_MUX("ntr8k", NTR, pins_ntr8k),
GRP_MUX("hrst", RST, pins_hrst),
GRP_MUX("mdio", MDIO, pins_mdio),
GRP_MUX("bootled", LED, pins_bled),
GRP_MUX("asc0", ASC, pins_asc0),
GRP_MUX("spi", SPI, pins_spi),
GRP_MUX("spi cs0", SPI, pins_spi_cs0),
GRP_MUX("spi cs1", SPI, pins_spi_cs1),
GRP_MUX("i2c", I2C, pins_i2c),
GRP_MUX("jtag", JTAG, pins_jtag),
GRP_MUX("slic", SLIC, pins_slic),
GRP_MUX("pcm", PCM, pins_pcm),
GRP_MUX("asc1", ASC, pins_asc1),
};
static const char * const ltq_rst_grps[] = {"por", "hrst"};
static const char * const ltq_ntr_grps[] = {"ntr", "ntr8k"};
static const char * const ltq_mdio_grps[] = {"mdio"};
static const char * const ltq_bled_grps[] = {"bootled"};
static const char * const ltq_asc_grps[] = {"asc0", "asc1"};
static const char * const ltq_spi_grps[] = {"spi", "spi cs0", "spi cs1"};
static const char * const ltq_i2c_grps[] = {"i2c"};
static const char * const ltq_jtag_grps[] = {"jtag"};
static const char * const ltq_slic_grps[] = {"slic"};
static const char * const ltq_pcm_grps[] = {"pcm"};
static struct ltq_pmx_func falcon_funcs[] = {
{"rst", ARRAY_AND_SIZE(ltq_rst_grps)},
{"ntr", ARRAY_AND_SIZE(ltq_ntr_grps)},
{"mdio", ARRAY_AND_SIZE(ltq_mdio_grps)},
{"led", ARRAY_AND_SIZE(ltq_bled_grps)},
{"asc", ARRAY_AND_SIZE(ltq_asc_grps)},
{"spi", ARRAY_AND_SIZE(ltq_spi_grps)},
{"i2c", ARRAY_AND_SIZE(ltq_i2c_grps)},
{"jtag", ARRAY_AND_SIZE(ltq_jtag_grps)},
{"slic", ARRAY_AND_SIZE(ltq_slic_grps)},
{"pcm", ARRAY_AND_SIZE(ltq_pcm_grps)},
};
/* --------- pinconf related code --------- */
static int falcon_pinconf_group_get(struct pinctrl_dev *pctrldev,
unsigned group, unsigned long *config)
{
return -ENOTSUPP;
}
static int falcon_pinconf_group_set(struct pinctrl_dev *pctrldev,
unsigned group, unsigned long config)
{
return -ENOTSUPP;
}
static int falcon_pinconf_get(struct pinctrl_dev *pctrldev,
unsigned pin, unsigned long *config)
{
struct ltq_pinmux_info *info = pinctrl_dev_get_drvdata(pctrldev);
enum ltq_pinconf_param param = LTQ_PINCONF_UNPACK_PARAM(*config);
void __iomem *mem = info->membase[PORT(pin)];
switch (param) {
case LTQ_PINCONF_PARAM_DRIVE_CURRENT:
*config = LTQ_PINCONF_PACK(param,
!!pad_getbit(mem, LTQ_PADC_DCC, PORT_PIN(pin)));
break;
case LTQ_PINCONF_PARAM_SLEW_RATE:
*config = LTQ_PINCONF_PACK(param,
!!pad_getbit(mem, LTQ_PADC_SRC, PORT_PIN(pin)));
break;
case LTQ_PINCONF_PARAM_PULL:
if (pad_getbit(mem, LTQ_PADC_PDEN, PORT_PIN(pin)))
*config = LTQ_PINCONF_PACK(param, 1);
else if (pad_getbit(mem, LTQ_PADC_PUEN, PORT_PIN(pin)))
*config = LTQ_PINCONF_PACK(param, 2);
else
*config = LTQ_PINCONF_PACK(param, 0);
break;
default:
return -ENOTSUPP;
}
return 0;
}
static int falcon_pinconf_set(struct pinctrl_dev *pctrldev,
unsigned pin, unsigned long config)
{
enum ltq_pinconf_param param = LTQ_PINCONF_UNPACK_PARAM(config);
int arg = LTQ_PINCONF_UNPACK_ARG(config);
struct ltq_pinmux_info *info = pinctrl_dev_get_drvdata(pctrldev);
void __iomem *mem = info->membase[PORT(pin)];
u32 reg;
switch (param) {
case LTQ_PINCONF_PARAM_DRIVE_CURRENT:
reg = LTQ_PADC_DCC;
break;
case LTQ_PINCONF_PARAM_SLEW_RATE:
reg = LTQ_PADC_SRC;
break;
case LTQ_PINCONF_PARAM_PULL:
if (arg == 1)
reg = LTQ_PADC_PDEN;
else
reg = LTQ_PADC_PUEN;
break;
default:
pr_err("%s: Invalid config param %04x\n",
pinctrl_dev_get_name(pctrldev), param);
return -ENOTSUPP;
}
pad_w32(mem, BIT(PORT_PIN(pin)), reg);
if (!(pad_r32(mem, reg) & BIT(PORT_PIN(pin))))
return -ENOTSUPP;
return 0;
}
static void falcon_pinconf_dbg_show(struct pinctrl_dev *pctrldev,
struct seq_file *s, unsigned offset)
{
}
static void falcon_pinconf_group_dbg_show(struct pinctrl_dev *pctrldev,
struct seq_file *s, unsigned selector)
{
}
struct pinconf_ops falcon_pinconf_ops = {
.pin_config_get = falcon_pinconf_get,
.pin_config_set = falcon_pinconf_set,
.pin_config_group_get = falcon_pinconf_group_get,
.pin_config_group_set = falcon_pinconf_group_set,
.pin_config_dbg_show = falcon_pinconf_dbg_show,
.pin_config_group_dbg_show = falcon_pinconf_group_dbg_show,
};
static struct pinctrl_desc falcon_pctrl_desc = {
.owner = THIS_MODULE,
.pins = falcon_pads,
.confops = &falcon_pinconf_ops,
};
static inline int falcon_mux_apply(struct pinctrl_dev *pctrldev,
int mfp, int mux)
{
struct ltq_pinmux_info *info = pinctrl_dev_get_drvdata(pctrldev);
int port = PORT(info->mfp[mfp].pin);
if ((port >= PORTS) || (!info->membase[port]))
return -ENODEV;
pad_w32(info->membase[port], mux,
LTQ_PADC_MUX(PORT_PIN(info->mfp[mfp].pin)));
return 0;
}
static const struct ltq_cfg_param falcon_cfg_params[] = {
{"lantiq,pull", LTQ_PINCONF_PARAM_PULL},
{"lantiq,drive-current", LTQ_PINCONF_PARAM_DRIVE_CURRENT},
{"lantiq,slew-rate", LTQ_PINCONF_PARAM_SLEW_RATE},
};
static struct ltq_pinmux_info falcon_info = {
.desc = &falcon_pctrl_desc,
.apply_mux = falcon_mux_apply,
};
/* --------- register the pinctrl layer --------- */
int pinctrl_falcon_get_range_size(int id)
{
u32 avail;
if ((id >= PORTS) || (!falcon_info.membase[id]))
return -EINVAL;
avail = pad_r32(falcon_info.membase[id], LTQ_PADC_AVAIL);
return fls(avail);
}
void pinctrl_falcon_add_gpio_range(struct pinctrl_gpio_range *range)
{
pinctrl_add_gpio_range(falcon_info.pctrl, range);
}
static int pinctrl_falcon_probe(struct platform_device *pdev)
{
struct device_node *np;
int pad_count = 0;
int ret = 0;
/* load and remap the pad resources of the different banks */
for_each_compatible_node(np, NULL, "lantiq,pad-falcon") {
struct platform_device *ppdev = of_find_device_by_node(np);
const __be32 *bank = of_get_property(np, "lantiq,bank", NULL);
struct resource res;
u32 avail;
int pins;
if (!ppdev) {
dev_err(&pdev->dev, "failed to find pad pdev\n");
continue;
}
if (!bank || *bank >= PORTS)
continue;
if (of_address_to_resource(np, 0, &res))
continue;
falcon_info.clk[*bank] = clk_get(&ppdev->dev, NULL);
if (IS_ERR(falcon_info.clk[*bank])) {
dev_err(&ppdev->dev, "failed to get clock\n");
return PTR_ERR(falcon_info.clk[*bank]);
}
falcon_info.membase[*bank] =
devm_request_and_ioremap(&pdev->dev, &res);
if (!falcon_info.membase[*bank]) {
dev_err(&pdev->dev,
"Failed to remap memory for bank %d\n",
*bank);
return -ENOMEM;
}
avail = pad_r32(falcon_info.membase[*bank],
LTQ_PADC_AVAIL);
pins = fls(avail);
lantiq_load_pin_desc(&falcon_pads[pad_count], *bank, pins);
pad_count += pins;
clk_enable(falcon_info.clk[*bank]);
dev_dbg(&pdev->dev, "found %s with %d pads\n",
res.name, pins);
}
dev_dbg(&pdev->dev, "found a total of %d pads\n", pad_count);
falcon_pctrl_desc.name = dev_name(&pdev->dev);
falcon_pctrl_desc.npins = pad_count;
falcon_info.mfp = falcon_mfp;
falcon_info.num_mfp = ARRAY_SIZE(falcon_mfp);
falcon_info.grps = falcon_grps;
falcon_info.num_grps = ARRAY_SIZE(falcon_grps);
falcon_info.funcs = falcon_funcs;
falcon_info.num_funcs = ARRAY_SIZE(falcon_funcs);
ret = ltq_pinctrl_register(pdev, &falcon_info);
if (!ret)
dev_info(&pdev->dev, "Init done\n");
return ret;
}
static const struct of_device_id falcon_match[] = {
{ .compatible = "lantiq,pinctrl-falcon" },
{},
};
MODULE_DEVICE_TABLE(of, falcon_match);
static struct platform_driver pinctrl_falcon_driver = {
.probe = pinctrl_falcon_probe,
.driver = {
.name = "pinctrl-falcon",
.owner = THIS_MODULE,
.of_match_table = falcon_match,
},
};
int __init pinctrl_falcon_init(void)
{
return platform_driver_register(&pinctrl_falcon_driver);
}
core_initcall_sync(pinctrl_falcon_init);

342
drivers/pinctrl/pinctrl-lantiq.c Normal file
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/*
* linux/drivers/pinctrl/pinctrl-lantiq.c
* based on linux/drivers/pinctrl/pinctrl-pxa3xx.c
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* publishhed by the Free Software Foundation.
*
* Copyright (C) 2012 John Crispin <blogic@openwrt.org>
*/
#include <linux/module.h>
#include <linux/device.h>
#include <linux/io.h>
#include <linux/platform_device.h>
#include <linux/slab.h>
#include <linux/of.h>
#include "pinctrl-lantiq.h"
static int ltq_get_group_count(struct pinctrl_dev *pctrldev)
{
struct ltq_pinmux_info *info = pinctrl_dev_get_drvdata(pctrldev);
return info->num_grps;
}
static const char *ltq_get_group_name(struct pinctrl_dev *pctrldev,
unsigned selector)
{
struct ltq_pinmux_info *info = pinctrl_dev_get_drvdata(pctrldev);
if (selector >= info->num_grps)
return NULL;
return info->grps[selector].name;
}
static int ltq_get_group_pins(struct pinctrl_dev *pctrldev,
unsigned selector,
const unsigned **pins,
unsigned *num_pins)
{
struct ltq_pinmux_info *info = pinctrl_dev_get_drvdata(pctrldev);
if (selector >= info->num_grps)
return -EINVAL;
*pins = info->grps[selector].pins;
*num_pins = info->grps[selector].npins;
return 0;
}
void ltq_pinctrl_dt_free_map(struct pinctrl_dev *pctldev,
struct pinctrl_map *map, unsigned num_maps)
{
int i;
for (i = 0; i < num_maps; i++)
if (map[i].type == PIN_MAP_TYPE_CONFIGS_PIN)
kfree(map[i].data.configs.configs);
kfree(map);
}
static void ltq_pinctrl_pin_dbg_show(struct pinctrl_dev *pctldev,
struct seq_file *s,
unsigned offset)
{
seq_printf(s, " %s", dev_name(pctldev->dev));
}
static int ltq_pinctrl_dt_subnode_to_map(struct pinctrl_dev *pctldev,
struct device_node *np,
struct pinctrl_map **map)
{
struct ltq_pinmux_info *info = pinctrl_dev_get_drvdata(pctldev);
unsigned long configs[3];
unsigned num_configs = 0;
struct property *prop;
const char *group, *pin;
const char *function;
int ret, i;
ret = of_property_read_string(np, "lantiq,function", &function);
if (!ret) {
of_property_for_each_string(np, "lantiq,groups", prop, group) {
(*map)->type = PIN_MAP_TYPE_MUX_GROUP;
(*map)->name = function;
(*map)->data.mux.group = group;
(*map)->data.mux.function = function;
(*map)++;
}
if (of_find_property(np, "lantiq,pins", NULL))
dev_err(pctldev->dev,
"%s mixes pins and groups settings\n",
np->name);
return 0;
}
for (i = 0; i < info->num_params; i++) {
u32 val;
int ret = of_property_read_u32(np,
info->params[i].property, &val);
if (!ret)
configs[num_configs++] =
LTQ_PINCONF_PACK(info->params[i].param,
val);
}
if (!num_configs)
return -EINVAL;
of_property_for_each_string(np, "lantiq,pins", prop, pin) {
(*map)->data.configs.configs = kmemdup(configs,
num_configs * sizeof(unsigned long),
GFP_KERNEL);
(*map)->type = PIN_MAP_TYPE_CONFIGS_PIN;
(*map)->name = pin;
(*map)->data.configs.group_or_pin = pin;
(*map)->data.configs.num_configs = num_configs;
(*map)++;
}
return 0;
}
static int ltq_pinctrl_dt_subnode_size(struct device_node *np)
{
int ret;
ret = of_property_count_strings(np, "lantiq,groups");
if (ret < 0)
ret = of_property_count_strings(np, "lantiq,pins");
return ret;
}
int ltq_pinctrl_dt_node_to_map(struct pinctrl_dev *pctldev,
struct device_node *np_config,
struct pinctrl_map **map,
unsigned *num_maps)
{
struct pinctrl_map *tmp;
struct device_node *np;
int ret;
*num_maps = 0;
for_each_child_of_node(np_config, np)
*num_maps += ltq_pinctrl_dt_subnode_size(np);
*map = kzalloc(*num_maps * sizeof(struct pinctrl_map), GFP_KERNEL);
if (!*map)
return -ENOMEM;
tmp = *map;
for_each_child_of_node(np_config, np) {
ret = ltq_pinctrl_dt_subnode_to_map(pctldev, np, &tmp);
if (ret < 0) {
ltq_pinctrl_dt_free_map(pctldev, *map, *num_maps);
return ret;
}
}
return 0;
}
static struct pinctrl_ops ltq_pctrl_ops = {
.get_groups_count = ltq_get_group_count,
.get_group_name = ltq_get_group_name,
.get_group_pins = ltq_get_group_pins,
.pin_dbg_show = ltq_pinctrl_pin_dbg_show,
.dt_node_to_map = ltq_pinctrl_dt_node_to_map,
.dt_free_map = ltq_pinctrl_dt_free_map,
};
static int ltq_pmx_func_count(struct pinctrl_dev *pctrldev)
{
struct ltq_pinmux_info *info = pinctrl_dev_get_drvdata(pctrldev);
return info->num_funcs;
}
static const char *ltq_pmx_func_name(struct pinctrl_dev *pctrldev,
unsigned selector)
{
struct ltq_pinmux_info *info = pinctrl_dev_get_drvdata(pctrldev);
if (selector >= info->num_funcs)
return NULL;
return info->funcs[selector].name;
}
static int ltq_pmx_get_groups(struct pinctrl_dev *pctrldev,
unsigned func,
const char * const **groups,
unsigned * const num_groups)
{
struct ltq_pinmux_info *info = pinctrl_dev_get_drvdata(pctrldev);
*groups = info->funcs[func].groups;
*num_groups = info->funcs[func].num_groups;
return 0;
}
/* Return function number. If failure, return negative value. */
static int match_mux(const struct ltq_mfp_pin *mfp, unsigned mux)
{
int i;
for (i = 0; i < LTQ_MAX_MUX; i++) {
if (mfp->func[i] == mux)
break;
}
if (i >= LTQ_MAX_MUX)
return -EINVAL;
return i;
}
/* dont assume .mfp is linearly mapped. find the mfp with the correct .pin */
static int match_mfp(const struct ltq_pinmux_info *info, int pin)
{
int i;
for (i = 0; i < info->num_mfp; i++) {
if (info->mfp[i].pin == pin)
return i;
}
return -1;
}
/* check whether current pin configuration is valid. Negative for failure */
static int match_group_mux(const struct ltq_pin_group *grp,
const struct ltq_pinmux_info *info,
unsigned mux)
{
int i, pin, ret = 0;
for (i = 0; i < grp->npins; i++) {
pin = match_mfp(info, grp->pins[i]);
if (pin < 0) {
dev_err(info->dev, "could not find mfp for pin %d\n",
grp->pins[i]);
return -EINVAL;
}
ret = match_mux(&info->mfp[pin], mux);
if (ret < 0) {
dev_err(info->dev, "Can't find mux %d on pin%d\n",
mux, pin);
break;
}
}
return ret;
}
static int ltq_pmx_enable(struct pinctrl_dev *pctrldev,
unsigned func,
unsigned group)
{
struct ltq_pinmux_info *info = pinctrl_dev_get_drvdata(pctrldev);
const struct ltq_pin_group *pin_grp = &info->grps[group];
int i, pin, pin_func, ret;
if (!pin_grp->npins ||
(match_group_mux(pin_grp, info, pin_grp->mux) < 0)) {
dev_err(info->dev, "Failed to set the pin group: %s\n",
info->grps[group].name);
return -EINVAL;
}
for (i = 0; i < pin_grp->npins; i++) {
pin = match_mfp(info, pin_grp->pins[i]);
if (pin < 0) {
dev_err(info->dev, "could not find mfp for pin %d\n",
pin_grp->pins[i]);
return -EINVAL;
}
pin_func = match_mux(&info->mfp[pin], pin_grp->mux);
ret = info->apply_mux(pctrldev, pin, pin_func);
if (ret) {
dev_err(info->dev,
"failed to apply mux %d for pin %d\n",
pin_func, pin);
return ret;
}
}
return 0;
}
static void ltq_pmx_disable(struct pinctrl_dev *pctrldev,
unsigned func,
unsigned group)
{
/*
* Nothing to do here. However, pinconf_check_ops() requires this
* callback to be defined.
*/
}
static int ltq_pmx_gpio_request_enable(struct pinctrl_dev *pctrldev,
struct pinctrl_gpio_range *range,
unsigned pin)
{
struct ltq_pinmux_info *info = pinctrl_dev_get_drvdata(pctrldev);
int mfp = match_mfp(info, pin + (range->id * 32));
int pin_func;
if (mfp < 0) {
dev_err(info->dev, "could not find mfp for pin %d\n", pin);
return -EINVAL;
}
pin_func = match_mux(&info->mfp[mfp], 0);
if (pin_func < 0) {
dev_err(info->dev, "No GPIO function on pin%d\n", mfp);
return -EINVAL;
}
return info->apply_mux(pctrldev, mfp, pin_func);
}
static struct pinmux_ops ltq_pmx_ops = {
.get_functions_count = ltq_pmx_func_count,
.get_function_name = ltq_pmx_func_name,
.get_function_groups = ltq_pmx_get_groups,
.enable = ltq_pmx_enable,
.disable = ltq_pmx_disable,
.gpio_request_enable = ltq_pmx_gpio_request_enable,
};
/*
* allow different socs to register with the generic part of the lanti
* pinctrl code
*/
int ltq_pinctrl_register(struct platform_device *pdev,
struct ltq_pinmux_info *info)
{
struct pinctrl_desc *desc;
if (!info)
return -EINVAL;
desc = info->desc;
desc->pctlops = &ltq_pctrl_ops;
desc->pmxops = &ltq_pmx_ops;
info->dev = &pdev->dev;
info->pctrl = pinctrl_register(desc, &pdev->dev, info);
if (!info->pctrl) {
dev_err(&pdev->dev, "failed to register LTQ pinmux driver\n");
return -EINVAL;
}
platform_set_drvdata(pdev, info);
return 0;
}

194
drivers/pinctrl/pinctrl-lantiq.h Normal file
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/*
* linux/drivers/pinctrl/pinctrl-lantiq.h
* based on linux/drivers/pinctrl/pinctrl-pxa3xx.h
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* publishhed by the Free Software Foundation.
*
* Copyright (C) 2012 John Crispin <blogic@openwrt.org>
*/
#ifndef __PINCTRL_LANTIQ_H
#include <linux/clkdev.h>
#include <linux/pinctrl/pinctrl.h>
#include <linux/pinctrl/pinconf.h>
#include <linux/pinctrl/pinmux.h>
#include <linux/pinctrl/consumer.h>
#include <linux/pinctrl/machine.h>
#include "core.h"
#define ARRAY_AND_SIZE(x) (x), ARRAY_SIZE(x)
#define LTQ_MAX_MUX 4
#define MFPR_FUNC_MASK 0x3
#define LTQ_PINCONF_PACK(param, arg) ((param) << 16 | (arg))
#define LTQ_PINCONF_UNPACK_PARAM(conf) ((conf) >> 16)
#define LTQ_PINCONF_UNPACK_ARG(conf) ((conf) & 0xffff)
enum ltq_pinconf_param {
LTQ_PINCONF_PARAM_PULL,
LTQ_PINCONF_PARAM_OPEN_DRAIN,
LTQ_PINCONF_PARAM_DRIVE_CURRENT,
LTQ_PINCONF_PARAM_SLEW_RATE,
};
struct ltq_cfg_param {
const char *property;
enum ltq_pinconf_param param;
};
struct ltq_mfp_pin {
const char *name;
const unsigned int pin;
const unsigned short func[LTQ_MAX_MUX];
};
struct ltq_pin_group {
const char *name;
const unsigned mux;
const unsigned *pins;
const unsigned npins;
};
struct ltq_pmx_func {
const char *name;
const char * const *groups;
const unsigned num_groups;
};
struct ltq_pinmux_info {
struct device *dev;
struct pinctrl_dev *pctrl;
/* we need to manage up to 5 pad controllers */
void __iomem *membase[5];
/* the descriptor for the subsystem */
struct pinctrl_desc *desc;
/* we expose our pads to the subsystem */
struct pinctrl_pin_desc *pads;
/* the number of pads. this varies between socs */
unsigned int num_pads;
/* these are our multifunction pins */
const struct ltq_mfp_pin *mfp;
unsigned int num_mfp;
/* a number of multifunction pins can be grouped together */
const struct ltq_pin_group *grps;
unsigned int num_grps;
/* a mapping between function string and id */
const struct ltq_pmx_func *funcs;
unsigned int num_funcs;
/* the pinconf options that we are able to read from the DT */
const struct ltq_cfg_param *params;
unsigned int num_params;
/* the pad controller can have a irq mapping */
const unsigned *exin;
unsigned int num_exin;
/* we need 5 clocks max */
struct clk *clk[5];
/* soc specific callback used to apply muxing */
int (*apply_mux)(struct pinctrl_dev *pctrldev, int pin, int mux);
};
enum ltq_pin {
GPIO0 = 0,
GPIO1,
GPIO2,
GPIO3,
GPIO4,
GPIO5,
GPIO6,
GPIO7,
GPIO8,
GPIO9,
GPIO10, /* 10 */
GPIO11,
GPIO12,
GPIO13,
GPIO14,
GPIO15,
GPIO16,
GPIO17,
GPIO18,
GPIO19,
GPIO20, /* 20 */
GPIO21,
GPIO22,
GPIO23,
GPIO24,
GPIO25,
GPIO26,
GPIO27,
GPIO28,
GPIO29,
GPIO30, /* 30 */
GPIO31,
GPIO32,
GPIO33,
GPIO34,
GPIO35,
GPIO36,
GPIO37,
GPIO38,
GPIO39,
GPIO40, /* 40 */
GPIO41,
GPIO42,
GPIO43,
GPIO44,
GPIO45,
GPIO46,
GPIO47,
GPIO48,
GPIO49,
GPIO50, /* 50 */
GPIO51,
GPIO52,
GPIO53,
GPIO54,
GPIO55,
GPIO64,
GPIO65,
GPIO66,
GPIO67,
GPIO68,
GPIO69,
GPIO70,
GPIO71,
GPIO72,
GPIO73,
GPIO74,
GPIO75,
GPIO76,
GPIO77,
GPIO78,
GPIO79,
GPIO80,
GPIO81,
GPIO82,
GPIO83,
GPIO84,
GPIO85,
GPIO86,
GPIO87,
GPIO88,
};
extern int ltq_pinctrl_register(struct platform_device *pdev,
struct ltq_pinmux_info *info);
extern int ltq_pinctrl_unregister(struct platform_device *pdev);
#endif /* __PINCTRL_PXA3XX_H */

781
drivers/pinctrl/pinctrl-xway.c Normal file
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/*
* linux/drivers/pinctrl/pinmux-xway.c
* based on linux/drivers/pinctrl/pinmux-pxa910.c
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* publishhed by the Free Software Foundation.
*
* Copyright (C) 2012 John Crispin <blogic@openwrt.org>
*/
#include <linux/slab.h>
#include <linux/module.h>
#include <linux/of_platform.h>
#include <linux/of_address.h>
#include <linux/of_gpio.h>
#include <linux/ioport.h>
#include <linux/io.h>
#include <linux/device.h>
#include <linux/module.h>
#include <linux/io.h>
#include <linux/platform_device.h>
#include "pinctrl-lantiq.h"
#include <lantiq_soc.h>
/* we have 3 1/2 banks of 16 bit each */
#define PINS 16
#define PORT3 3
#define PORT(x) (x / PINS)
#define PORT_PIN(x) (x % PINS)
/* we have 2 mux bits that can be set for each pin */
#define MUX_ALT0 0x1
#define MUX_ALT1 0x2
/*
* each bank has this offset apart from the 1/2 bank that is mixed into the
* other 3 ranges
*/
#define REG_OFF 0x30
/* these are the offsets to our registers */
#define GPIO_BASE(p) (REG_OFF * PORT(p))
#define GPIO_OUT(p) GPIO_BASE(p)
#define GPIO_IN(p) (GPIO_BASE(p) + 0x04)
#define GPIO_DIR(p) (GPIO_BASE(p) + 0x08)
#define GPIO_ALT0(p) (GPIO_BASE(p) + 0x0C)
#define GPIO_ALT1(p) (GPIO_BASE(p) + 0x10)
#define GPIO_OD(p) (GPIO_BASE(p) + 0x14)
#define GPIO_PUDSEL(p) (GPIO_BASE(p) + 0x1c)
#define GPIO_PUDEN(p) (GPIO_BASE(p) + 0x20)
/* the 1/2 port needs special offsets for some registers */
#define GPIO3_OD (GPIO_BASE(0) + 0x24)
#define GPIO3_PUDSEL (GPIO_BASE(0) + 0x28)
#define GPIO3_PUDEN (GPIO_BASE(0) + 0x2C)
#define GPIO3_ALT1 (GPIO_BASE(PINS) + 0x24)
/* macros to help us access the registers */
#define gpio_getbit(m, r, p) (!!(ltq_r32(m + r) & BIT(p)))
#define gpio_setbit(m, r, p) ltq_w32_mask(0, BIT(p), m + r)
#define gpio_clearbit(m, r, p) ltq_w32_mask(BIT(p), 0, m + r)
#define MFP_XWAY(a, f0, f1, f2, f3) \
{ \
.name = #a, \
.pin = a, \
.func = { \
XWAY_MUX_##f0, \
XWAY_MUX_##f1, \
XWAY_MUX_##f2, \
XWAY_MUX_##f3, \
}, \
}
#define GRP_MUX(a, m, p) \
{ .name = a, .mux = XWAY_MUX_##m, .pins = p, .npins = ARRAY_SIZE(p), }
#define FUNC_MUX(f, m) \
{ .func = f, .mux = XWAY_MUX_##m, }
#define XWAY_MAX_PIN 32
#define XR9_MAX_PIN 56
enum xway_mux {
XWAY_MUX_GPIO = 0,
XWAY_MUX_SPI,
XWAY_MUX_ASC,
XWAY_MUX_PCI,
XWAY_MUX_CGU,
XWAY_MUX_EBU,
XWAY_MUX_JTAG,
XWAY_MUX_EXIN,
XWAY_MUX_TDM,
XWAY_MUX_STP,
XWAY_MUX_SIN,
XWAY_MUX_GPT,
XWAY_MUX_NMI,
XWAY_MUX_MDIO,
XWAY_MUX_MII,
XWAY_MUX_EPHY,
XWAY_MUX_DFE,
XWAY_MUX_SDIO,
XWAY_MUX_NONE = 0xffff,
};
static const struct ltq_mfp_pin xway_mfp[] = {
/* pin f0 f1 f2 f3 */
MFP_XWAY(GPIO0, GPIO, EXIN, NONE, TDM),
MFP_XWAY(GPIO1, GPIO, EXIN, NONE, NONE),
MFP_XWAY(GPIO2, GPIO, CGU, EXIN, NONE),
MFP_XWAY(GPIO3, GPIO, CGU, NONE, PCI),
MFP_XWAY(GPIO4, GPIO, STP, NONE, ASC),
MFP_XWAY(GPIO5, GPIO, STP, NONE, NONE),
MFP_XWAY(GPIO6, GPIO, STP, GPT, ASC),
MFP_XWAY(GPIO7, GPIO, CGU, PCI, NONE),
MFP_XWAY(GPIO8, GPIO, CGU, NMI, NONE),
MFP_XWAY(GPIO9, GPIO, ASC, SPI, EXIN),
MFP_XWAY(GPIO10, GPIO, ASC, SPI, NONE),
MFP_XWAY(GPIO11, GPIO, ASC, PCI, SPI),
MFP_XWAY(GPIO12, GPIO, ASC, NONE, NONE),
MFP_XWAY(GPIO13, GPIO, EBU, SPI, NONE),
MFP_XWAY(GPIO14, GPIO, CGU, PCI, NONE),
MFP_XWAY(GPIO15, GPIO, SPI, JTAG, NONE),
MFP_XWAY(GPIO16, GPIO, SPI, NONE, JTAG),
MFP_XWAY(GPIO17, GPIO, SPI, NONE, JTAG),
MFP_XWAY(GPIO18, GPIO, SPI, NONE, JTAG),
MFP_XWAY(GPIO19, GPIO, PCI, NONE, NONE),
MFP_XWAY(GPIO20, GPIO, JTAG, NONE, NONE),
MFP_XWAY(GPIO21, GPIO, PCI, EBU, GPT),
MFP_XWAY(GPIO22, GPIO, SPI, NONE, NONE),
MFP_XWAY(GPIO23, GPIO, EBU, PCI, STP),
MFP_XWAY(GPIO24, GPIO, EBU, TDM, PCI),
MFP_XWAY(GPIO25, GPIO, TDM, NONE, ASC),
MFP_XWAY(GPIO26, GPIO, EBU, NONE, TDM),
MFP_XWAY(GPIO27, GPIO, TDM, NONE, ASC),
MFP_XWAY(GPIO28, GPIO, GPT, NONE, NONE),
MFP_XWAY(GPIO29, GPIO, PCI, NONE, NONE),
MFP_XWAY(GPIO30, GPIO, PCI, NONE, NONE),
MFP_XWAY(GPIO31, GPIO, EBU, PCI, NONE),
MFP_XWAY(GPIO32, GPIO, NONE, NONE, EBU),
MFP_XWAY(GPIO33, GPIO, NONE, NONE, EBU),
MFP_XWAY(GPIO34, GPIO, NONE, NONE, EBU),
MFP_XWAY(GPIO35, GPIO, NONE, NONE, EBU),
MFP_XWAY(GPIO36, GPIO, SIN, NONE, EBU),
MFP_XWAY(GPIO37, GPIO, PCI, NONE, NONE),
MFP_XWAY(GPIO38, GPIO, PCI, NONE, NONE),
MFP_XWAY(GPIO39, GPIO, EXIN, NONE, NONE),
MFP_XWAY(GPIO40, GPIO, NONE, NONE, NONE),
MFP_XWAY(GPIO41, GPIO, NONE, NONE, NONE),
MFP_XWAY(GPIO42, GPIO, MDIO, NONE, NONE),
MFP_XWAY(GPIO43, GPIO, MDIO, NONE, NONE),
MFP_XWAY(GPIO44, GPIO, NONE, NONE, SIN),
MFP_XWAY(GPIO45, GPIO, NONE, NONE, SIN),
MFP_XWAY(GPIO46, GPIO, NONE, NONE, EXIN),
MFP_XWAY(GPIO47, GPIO, NONE, NONE, SIN),
MFP_XWAY(GPIO48, GPIO, EBU, NONE, NONE),
MFP_XWAY(GPIO49, GPIO, EBU, NONE, NONE),
MFP_XWAY(GPIO50, GPIO, NONE, NONE, NONE),
MFP_XWAY(GPIO51, GPIO, NONE, NONE, NONE),
MFP_XWAY(GPIO52, GPIO, NONE, NONE, NONE),
MFP_XWAY(GPIO53, GPIO, NONE, NONE, NONE),
MFP_XWAY(GPIO54, GPIO, NONE, NONE, NONE),
MFP_XWAY(GPIO55, GPIO, NONE, NONE, NONE),
};
static const struct ltq_mfp_pin ase_mfp[] = {
/* pin f0 f1 f2 f3 */
MFP_XWAY(GPIO0, GPIO, EXIN, MII, TDM),
MFP_XWAY(GPIO1, GPIO, STP, DFE, EBU),
MFP_XWAY(GPIO2, GPIO, STP, DFE, EPHY),
MFP_XWAY(GPIO3, GPIO, STP, EPHY, EBU),
MFP_XWAY(GPIO4, GPIO, GPT, EPHY, MII),
MFP_XWAY(GPIO5, GPIO, MII, ASC, GPT),
MFP_XWAY(GPIO6, GPIO, MII, ASC, EXIN),
MFP_XWAY(GPIO7, GPIO, SPI, MII, JTAG),
MFP_XWAY(GPIO8, GPIO, SPI, MII, JTAG),
MFP_XWAY(GPIO9, GPIO, SPI, MII, JTAG),
MFP_XWAY(GPIO10, GPIO, SPI, MII, JTAG),
MFP_XWAY(GPIO11, GPIO, EBU, CGU, JTAG),
MFP_XWAY(GPIO12, GPIO, EBU, MII, SDIO),
MFP_XWAY(GPIO13, GPIO, EBU, MII, CGU),
MFP_XWAY(GPIO14, GPIO, EBU, SPI, CGU),
MFP_XWAY(GPIO15, GPIO, EBU, SPI, SDIO),
MFP_XWAY(GPIO16, GPIO, NONE, NONE, NONE),
MFP_XWAY(GPIO17, GPIO, NONE, NONE, NONE),
MFP_XWAY(GPIO18, GPIO, NONE, NONE, NONE),
MFP_XWAY(GPIO19, GPIO, EBU, MII, SDIO),
MFP_XWAY(GPIO20, GPIO, EBU, MII, SDIO),
MFP_XWAY(GPIO21, GPIO, EBU, MII, SDIO),
MFP_XWAY(GPIO22, GPIO, EBU, MII, CGU),
MFP_XWAY(GPIO23, GPIO, EBU, MII, CGU),
MFP_XWAY(GPIO24, GPIO, EBU, NONE, MII),
MFP_XWAY(GPIO25, GPIO, EBU, MII, GPT),
MFP_XWAY(GPIO26, GPIO, EBU, MII, SDIO),
MFP_XWAY(GPIO27, GPIO, EBU, NONE, MII),
MFP_XWAY(GPIO28, GPIO, MII, EBU, SDIO),
MFP_XWAY(GPIO29, GPIO, EBU, MII, EXIN),
MFP_XWAY(GPIO30, GPIO, NONE, NONE, NONE),
MFP_XWAY(GPIO31, GPIO, NONE, NONE, NONE),
};
static const unsigned pins_jtag[] = {GPIO15, GPIO16, GPIO17, GPIO19, GPIO35};
static const unsigned pins_asc0[] = {GPIO11, GPIO12};
static const unsigned pins_asc0_cts_rts[] = {GPIO9, GPIO10};
static const unsigned pins_stp[] = {GPIO4, GPIO5, GPIO6};
static const unsigned pins_nmi[] = {GPIO8};
static const unsigned pins_mdio[] = {GPIO42, GPIO43};
static const unsigned pins_ebu_a24[] = {GPIO13};
static const unsigned pins_ebu_clk[] = {GPIO21};
static const unsigned pins_ebu_cs1[] = {GPIO23};
static const unsigned pins_ebu_a23[] = {GPIO24};
static const unsigned pins_ebu_wait[] = {GPIO26};
static const unsigned pins_ebu_a25[] = {GPIO31};
static const unsigned pins_ebu_rdy[] = {GPIO48};
static const unsigned pins_ebu_rd[] = {GPIO49};
static const unsigned pins_nand_ale[] = {GPIO13};
static const unsigned pins_nand_cs1[] = {GPIO23};
static const unsigned pins_nand_cle[] = {GPIO24};
static const unsigned pins_nand_rdy[] = {GPIO48};
static const unsigned pins_nand_rd[] = {GPIO49};
static const unsigned pins_exin0[] = {GPIO0};
static const unsigned pins_exin1[] = {GPIO1};
static const unsigned pins_exin2[] = {GPIO2};
static const unsigned pins_exin3[] = {GPIO39};
static const unsigned pins_exin4[] = {GPIO46};
static const unsigned pins_exin5[] = {GPIO9};
static const unsigned pins_spi[] = {GPIO16, GPIO17, GPIO18};
static const unsigned pins_spi_cs1[] = {GPIO15};
static const unsigned pins_spi_cs2[] = {GPIO21};
static const unsigned pins_spi_cs3[] = {GPIO13};
static const unsigned pins_spi_cs4[] = {GPIO10};
static const unsigned pins_spi_cs5[] = {GPIO9};
static const unsigned pins_spi_cs6[] = {GPIO11};
static const unsigned pins_gpt1[] = {GPIO28};
static const unsigned pins_gpt2[] = {GPIO21};
static const unsigned pins_gpt3[] = {GPIO6};
static const unsigned pins_clkout0[] = {GPIO8};
static const unsigned pins_clkout1[] = {GPIO7};
static const unsigned pins_clkout2[] = {GPIO3};
static const unsigned pins_clkout3[] = {GPIO2};
static const unsigned pins_pci_gnt1[] = {GPIO30};
static const unsigned pins_pci_gnt2[] = {GPIO23};
static const unsigned pins_pci_gnt3[] = {GPIO19};
static const unsigned pins_pci_gnt4[] = {GPIO38};
static const unsigned pins_pci_req1[] = {GPIO29};
static const unsigned pins_pci_req2[] = {GPIO31};
static const unsigned pins_pci_req3[] = {GPIO3};
static const unsigned pins_pci_req4[] = {GPIO37};
static const unsigned ase_pins_jtag[] = {GPIO7, GPIO8, GPIO9, GPIO10, GPIO11};
static const unsigned ase_pins_asc[] = {GPIO5, GPIO6};
static const unsigned ase_pins_stp[] = {GPIO1, GPIO2, GPIO3};
static const unsigned ase_pins_ephy[] = {GPIO2, GPIO3, GPIO4};
static const unsigned ase_pins_dfe[] = {GPIO1, GPIO2};
static const unsigned ase_pins_spi[] = {GPIO8, GPIO9, GPIO10};
static const unsigned ase_pins_spi_cs1[] = {GPIO7};
static const unsigned ase_pins_spi_cs2[] = {GPIO15};
static const unsigned ase_pins_spi_cs3[] = {GPIO14};
static const unsigned ase_pins_exin0[] = {GPIO6};
static const unsigned ase_pins_exin1[] = {GPIO29};
static const unsigned ase_pins_exin2[] = {GPIO0};
static const unsigned ase_pins_gpt1[] = {GPIO5};
static const unsigned ase_pins_gpt2[] = {GPIO4};
static const unsigned ase_pins_gpt3[] = {GPIO25};
static const struct ltq_pin_group xway_grps[] = {
GRP_MUX("exin0", EXIN, pins_exin0),
GRP_MUX("exin1", EXIN, pins_exin1),
GRP_MUX("exin2", EXIN, pins_exin2),
GRP_MUX("jtag", JTAG, pins_jtag),
GRP_MUX("ebu a23", EBU, pins_ebu_a23),
GRP_MUX("ebu a24", EBU, pins_ebu_a24),
GRP_MUX("ebu a25", EBU, pins_ebu_a25),
GRP_MUX("ebu clk", EBU, pins_ebu_clk),
GRP_MUX("ebu cs1", EBU, pins_ebu_cs1),
GRP_MUX("ebu wait", EBU, pins_ebu_wait),
GRP_MUX("nand ale", EBU, pins_nand_ale),
GRP_MUX("nand cs1", EBU, pins_nand_cs1),
GRP_MUX("nand cle", EBU, pins_nand_cle),
GRP_MUX("spi", SPI, pins_spi),
GRP_MUX("spi_cs1", SPI, pins_spi_cs1),
GRP_MUX("spi_cs2", SPI, pins_spi_cs2),
GRP_MUX("spi_cs3", SPI, pins_spi_cs3),
GRP_MUX("spi_cs4", SPI, pins_spi_cs4),
GRP_MUX("spi_cs5", SPI, pins_spi_cs5),
GRP_MUX("spi_cs6", SPI, pins_spi_cs6),
GRP_MUX("asc0", ASC, pins_asc0),
GRP_MUX("asc0 cts rts", ASC, pins_asc0_cts_rts),
GRP_MUX("stp", STP, pins_stp),
GRP_MUX("nmi", NMI, pins_nmi),
GRP_MUX("gpt1", GPT, pins_gpt1),
GRP_MUX("gpt2", GPT, pins_gpt2),
GRP_MUX("gpt3", GPT, pins_gpt3),
GRP_MUX("clkout0", CGU, pins_clkout0),
GRP_MUX("clkout1", CGU, pins_clkout1),
GRP_MUX("clkout2", CGU, pins_clkout2),
GRP_MUX("clkout3", CGU, pins_clkout3),
GRP_MUX("gnt1", PCI, pins_pci_gnt1),
GRP_MUX("gnt2", PCI, pins_pci_gnt2),
GRP_MUX("gnt3", PCI, pins_pci_gnt3),
GRP_MUX("req1", PCI, pins_pci_req1),
GRP_MUX("req2", PCI, pins_pci_req2),
GRP_MUX("req3", PCI, pins_pci_req3),
/* xrx only */
GRP_MUX("nand rdy", EBU, pins_nand_rdy),
GRP_MUX("nand rd", EBU, pins_nand_rd),
GRP_MUX("exin3", EXIN, pins_exin3),
GRP_MUX("exin4", EXIN, pins_exin4),
GRP_MUX("exin5", EXIN, pins_exin5),
GRP_MUX("gnt4", PCI, pins_pci_gnt4),
GRP_MUX("req4", PCI, pins_pci_gnt4),
GRP_MUX("mdio", MDIO, pins_mdio),
};
static const struct ltq_pin_group ase_grps[] = {
GRP_MUX("exin0", EXIN, ase_pins_exin0),
GRP_MUX("exin1", EXIN, ase_pins_exin1),
GRP_MUX("exin2", EXIN, ase_pins_exin2),
GRP_MUX("jtag", JTAG, ase_pins_jtag),
GRP_MUX("stp", STP, ase_pins_stp),
GRP_MUX("asc", ASC, ase_pins_asc),
GRP_MUX("gpt1", GPT, ase_pins_gpt1),
GRP_MUX("gpt2", GPT, ase_pins_gpt2),
GRP_MUX("gpt3", GPT, ase_pins_gpt3),
GRP_MUX("ephy", EPHY, ase_pins_ephy),
GRP_MUX("dfe", DFE, ase_pins_dfe),
GRP_MUX("spi", SPI, ase_pins_spi),
GRP_MUX("spi_cs1", SPI, ase_pins_spi_cs1),
GRP_MUX("spi_cs2", SPI, ase_pins_spi_cs2),
GRP_MUX("spi_cs3", SPI, ase_pins_spi_cs3),
};
static const char * const xway_pci_grps[] = {"gnt1", "gnt2",
"gnt3", "req1",
"req2", "req3"};
static const char * const xway_spi_grps[] = {"spi", "spi_cs1",
"spi_cs2", "spi_cs3",
"spi_cs4", "spi_cs5",
"spi_cs6"};
static const char * const xway_cgu_grps[] = {"clkout0", "clkout1",
"clkout2", "clkout3"};
static const char * const xway_ebu_grps[] = {"ebu a23", "ebu a24",
"ebu a25", "ebu cs1",
"ebu wait", "ebu clk",
"nand ale", "nand cs1",
"nand cle"};
static const char * const xway_exin_grps[] = {"exin0", "exin1", "exin2"};
static const char * const xway_gpt_grps[] = {"gpt1", "gpt2", "gpt3"};
static const char * const xway_asc_grps[] = {"asc0", "asc0 cts rts"};
static const char * const xway_jtag_grps[] = {"jtag"};
static const char * const xway_stp_grps[] = {"stp"};
static const char * const xway_nmi_grps[] = {"nmi"};
/* ar9/vr9/gr9 */
static const char * const xrx_mdio_grps[] = {"mdio"};
static const char * const xrx_ebu_grps[] = {"ebu a23", "ebu a24",
"ebu a25", "ebu cs1",
"ebu wait", "ebu clk",
"nand ale", "nand cs1",
"nand cle", "nand rdy",
"nand rd"};
static const char * const xrx_exin_grps[] = {"exin0", "exin1", "exin2",
"exin3", "exin4", "exin5"};
static const char * const xrx_pci_grps[] = {"gnt1", "gnt2",
"gnt3", "gnt4",
"req1", "req2",
"req3", "req4"};
/* ase */
static const char * const ase_exin_grps[] = {"exin0", "exin1", "exin2"};
static const char * const ase_gpt_grps[] = {"gpt1", "gpt2", "gpt3"};
static const char * const ase_dfe_grps[] = {"dfe"};
static const char * const ase_ephy_grps[] = {"ephy"};
static const char * const ase_asc_grps[] = {"asc"};
static const char * const ase_jtag_grps[] = {"jtag"};
static const char * const ase_stp_grps[] = {"stp"};
static const char * const ase_spi_grps[] = {"spi", "spi_cs1",
"spi_cs2", "spi_cs3"};
static const struct ltq_pmx_func danube_funcs[] = {
{"spi", ARRAY_AND_SIZE(xway_spi_grps)},
{"asc", ARRAY_AND_SIZE(xway_asc_grps)},
{"cgu", ARRAY_AND_SIZE(xway_cgu_grps)},
{"jtag", ARRAY_AND_SIZE(xway_jtag_grps)},
{"exin", ARRAY_AND_SIZE(xway_exin_grps)},
{"stp", ARRAY_AND_SIZE(xway_stp_grps)},
{"gpt", ARRAY_AND_SIZE(xway_gpt_grps)},
{"nmi", ARRAY_AND_SIZE(xway_nmi_grps)},
{"pci", ARRAY_AND_SIZE(xway_pci_grps)},
{"ebu", ARRAY_AND_SIZE(xway_ebu_grps)},
};
static const struct ltq_pmx_func xrx_funcs[] = {
{"spi", ARRAY_AND_SIZE(xway_spi_grps)},
{"asc", ARRAY_AND_SIZE(xway_asc_grps)},
{"cgu", ARRAY_AND_SIZE(xway_cgu_grps)},
{"jtag", ARRAY_AND_SIZE(xway_jtag_grps)},
{"exin", ARRAY_AND_SIZE(xrx_exin_grps)},
{"stp", ARRAY_AND_SIZE(xway_stp_grps)},
{"gpt", ARRAY_AND_SIZE(xway_gpt_grps)},
{"nmi", ARRAY_AND_SIZE(xway_nmi_grps)},
{"pci", ARRAY_AND_SIZE(xrx_pci_grps)},
{"ebu", ARRAY_AND_SIZE(xrx_ebu_grps)},
{"mdio", ARRAY_AND_SIZE(xrx_mdio_grps)},
};
static const struct ltq_pmx_func ase_funcs[] = {
{"spi", ARRAY_AND_SIZE(ase_spi_grps)},
{"asc", ARRAY_AND_SIZE(ase_asc_grps)},
{"jtag", ARRAY_AND_SIZE(ase_jtag_grps)},
{"exin", ARRAY_AND_SIZE(ase_exin_grps)},
{"stp", ARRAY_AND_SIZE(ase_stp_grps)},
{"gpt", ARRAY_AND_SIZE(ase_gpt_grps)},
{"ephy", ARRAY_AND_SIZE(ase_ephy_grps)},
{"dfe", ARRAY_AND_SIZE(ase_dfe_grps)},
};
/* --------- pinconf related code --------- */
static int xway_pinconf_get(struct pinctrl_dev *pctldev,
unsigned pin,
unsigned long *config)
{
struct ltq_pinmux_info *info = pinctrl_dev_get_drvdata(pctldev);
enum ltq_pinconf_param param = LTQ_PINCONF_UNPACK_PARAM(*config);
int port = PORT(pin);
u32 reg;
switch (param) {
case LTQ_PINCONF_PARAM_OPEN_DRAIN:
if (port == PORT3)
reg = GPIO3_OD;
else
reg = GPIO_OD(port);
*config = LTQ_PINCONF_PACK(param,
!!gpio_getbit(info->membase[0], reg, PORT_PIN(port)));
break;
case LTQ_PINCONF_PARAM_PULL:
if (port == PORT3)
reg = GPIO3_PUDEN;
else
reg = GPIO_PUDEN(port);
if (!gpio_getbit(info->membase[0], reg, PORT_PIN(port))) {
*config = LTQ_PINCONF_PACK(param, 0);
break;
}
if (port == PORT3)
reg = GPIO3_PUDSEL;
else
reg = GPIO_PUDSEL(port);
if (!gpio_getbit(info->membase[0], reg, PORT_PIN(port)))
*config = LTQ_PINCONF_PACK(param, 2);
else
*config = LTQ_PINCONF_PACK(param, 1);
break;
default:
dev_err(pctldev->dev, "Invalid config param %04x\n", param);
return -ENOTSUPP;
}
return 0;
}
static int xway_pinconf_set(struct pinctrl_dev *pctldev,
unsigned pin,
unsigned long config)
{
struct ltq_pinmux_info *info = pinctrl_dev_get_drvdata(pctldev);
enum ltq_pinconf_param param = LTQ_PINCONF_UNPACK_PARAM(config);
int arg = LTQ_PINCONF_UNPACK_ARG(config);
int port = PORT(pin);
u32 reg;
switch (param) {
case LTQ_PINCONF_PARAM_OPEN_DRAIN:
if (port == PORT3)
reg = GPIO3_OD;
else
reg = GPIO_OD(port);
gpio_setbit(info->membase[0], reg, PORT_PIN(port));
break;
case LTQ_PINCONF_PARAM_PULL:
if (port == PORT3)
reg = GPIO3_PUDEN;
else
reg = GPIO_PUDEN(port);
if (arg == 0) {
gpio_clearbit(info->membase[0], reg, PORT_PIN(port));
break;
}
gpio_setbit(info->membase[0], reg, PORT_PIN(port));
if (port == PORT3)
reg = GPIO3_PUDSEL;
else
reg = GPIO_PUDSEL(port);
if (arg == 1)
gpio_clearbit(info->membase[0], reg, PORT_PIN(port));
else if (arg == 2)
gpio_setbit(info->membase[0], reg, PORT_PIN(port));
else
dev_err(pctldev->dev, "Invalid pull value %d\n", arg);
break;
default:
dev_err(pctldev->dev, "Invalid config param %04x\n", param);
return -ENOTSUPP;
}
return 0;
}
struct pinconf_ops xway_pinconf_ops = {
.pin_config_get = xway_pinconf_get,
.pin_config_set = xway_pinconf_set,
};
static struct pinctrl_desc xway_pctrl_desc = {
.owner = THIS_MODULE,
.confops = &xway_pinconf_ops,
};
static inline int xway_mux_apply(struct pinctrl_dev *pctrldev,
int pin, int mux)
{
struct ltq_pinmux_info *info = pinctrl_dev_get_drvdata(pctrldev);
int port = PORT(pin);
u32 alt1_reg = GPIO_ALT1(pin);
if (port == PORT3)
alt1_reg = GPIO3_ALT1;
if (mux & MUX_ALT0)
gpio_setbit(info->membase[0], GPIO_ALT0(pin), PORT_PIN(pin));
else
gpio_clearbit(info->membase[0], GPIO_ALT0(pin), PORT_PIN(pin));
if (mux & MUX_ALT1)
gpio_setbit(info->membase[0], alt1_reg, PORT_PIN(pin));
else
gpio_clearbit(info->membase[0], alt1_reg, PORT_PIN(pin));
return 0;
}
static const struct ltq_cfg_param xway_cfg_params[] = {
{"lantiq,pull", LTQ_PINCONF_PARAM_PULL},
{"lantiq,open-drain", LTQ_PINCONF_PARAM_OPEN_DRAIN},
};
static struct ltq_pinmux_info xway_info = {
.desc = &xway_pctrl_desc,
.apply_mux = xway_mux_apply,
.params = xway_cfg_params,
.num_params = ARRAY_SIZE(xway_cfg_params),
};
/* --------- gpio_chip related code --------- */
static void xway_gpio_set(struct gpio_chip *chip, unsigned int pin, int val)
{
struct ltq_pinmux_info *info = dev_get_drvdata(chip->dev);
if (val)
gpio_setbit(info->membase[0], GPIO_OUT(pin), PORT_PIN(pin));
else
gpio_clearbit(info->membase[0], GPIO_OUT(pin), PORT_PIN(pin));
}
static int xway_gpio_get(struct gpio_chip *chip, unsigned int pin)
{
struct ltq_pinmux_info *info = dev_get_drvdata(chip->dev);
return gpio_getbit(info->membase[0], GPIO_IN(pin), PORT_PIN(pin));
}
static int xway_gpio_dir_in(struct gpio_chip *chip, unsigned int pin)
{
struct ltq_pinmux_info *info = dev_get_drvdata(chip->dev);
gpio_clearbit(info->membase[0], GPIO_DIR(pin), PORT_PIN(pin));
return 0;
}
static int xway_gpio_dir_out(struct gpio_chip *chip, unsigned int pin, int val)
{
struct ltq_pinmux_info *info = dev_get_drvdata(chip->dev);
gpio_setbit(info->membase[0], GPIO_DIR(pin), PORT_PIN(pin));
xway_gpio_set(chip, pin, val);
return 0;
}
static int xway_gpio_req(struct gpio_chip *chip, unsigned offset)
{
int gpio = chip->base + offset;
return pinctrl_request_gpio(gpio);
}
static void xway_gpio_free(struct gpio_chip *chip, unsigned offset)
{
int gpio = chip->base + offset;
pinctrl_free_gpio(gpio);
}
static struct gpio_chip xway_chip = {
.label = "gpio-xway",
.direction_input = xway_gpio_dir_in,
.direction_output = xway_gpio_dir_out,
.get = xway_gpio_get,
.set = xway_gpio_set,
.request = xway_gpio_req,
.free = xway_gpio_free,
.base = -1,
};
/* --------- register the pinctrl layer --------- */
static const unsigned xway_exin_pin_map[] = {GPIO0, GPIO1, GPIO2, GPIO39, GPIO46, GPIO9};
static const unsigned ase_exin_pins_map[] = {GPIO6, GPIO29, GPIO0};
static struct pinctrl_xway_soc {
int pin_count;
const struct ltq_mfp_pin *mfp;
const struct ltq_pin_group *grps;
unsigned int num_grps;
const struct ltq_pmx_func *funcs;
unsigned int num_funcs;
const unsigned *exin;
unsigned int num_exin;
} soc_cfg[] = {
/* legacy xway */
{XWAY_MAX_PIN, xway_mfp,
xway_grps, ARRAY_SIZE(xway_grps),
danube_funcs, ARRAY_SIZE(danube_funcs),
xway_exin_pin_map, 3},
/* xway xr9 series */
{XR9_MAX_PIN, xway_mfp,
xway_grps, ARRAY_SIZE(xway_grps),
xrx_funcs, ARRAY_SIZE(xrx_funcs),
xway_exin_pin_map, 6},
/* xway ase series */
{XWAY_MAX_PIN, ase_mfp,
ase_grps, ARRAY_SIZE(ase_grps),
ase_funcs, ARRAY_SIZE(ase_funcs),
ase_exin_pins_map, 3},
};
static struct pinctrl_gpio_range xway_gpio_range = {
.name = "XWAY GPIO",
.gc = &xway_chip,
};
static const struct of_device_id xway_match[] = {
{ .compatible = "lantiq,pinctrl-xway", .data = &soc_cfg[0]},
{ .compatible = "lantiq,pinctrl-xr9", .data = &soc_cfg[1]},
{ .compatible = "lantiq,pinctrl-ase", .data = &soc_cfg[2]},
{},
};
MODULE_DEVICE_TABLE(of, xway_match);
static int __devinit pinmux_xway_probe(struct platform_device *pdev)
{
const struct of_device_id *match;
const struct pinctrl_xway_soc *xway_soc;
struct resource *res;
int ret, i;
/* get and remap our register range */
res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
if (!res) {
dev_err(&pdev->dev, "Failed to get resource\n");
return -ENOENT;
}
xway_info.membase[0] = devm_request_and_ioremap(&pdev->dev, res);
if (!xway_info.membase[0]) {
dev_err(&pdev->dev, "Failed to remap resource\n");
return -ENOMEM;
}
match = of_match_device(xway_match, &pdev->dev);
if (match)
xway_soc = (const struct pinctrl_xway_soc *) match->data;
else
xway_soc = &soc_cfg[0];
/* find out how many pads we have */
xway_chip.ngpio = xway_soc->pin_count;
/* load our pad descriptors */
xway_info.pads = devm_kzalloc(&pdev->dev,
sizeof(struct pinctrl_pin_desc) * xway_chip.ngpio,
GFP_KERNEL);
if (!xway_info.pads) {
dev_err(&pdev->dev, "Failed to allocate pads\n");
return -ENOMEM;
}
for (i = 0; i < xway_chip.ngpio; i++) {
/* strlen("ioXY") + 1 = 5 */
char *name = devm_kzalloc(&pdev->dev, 5, GFP_KERNEL);
if (!name) {
dev_err(&pdev->dev, "Failed to allocate pad name\n");
return -ENOMEM;
}
snprintf(name, 5, "io%d", i);
xway_info.pads[i].number = GPIO0 + i;
xway_info.pads[i].name = name;
}
xway_pctrl_desc.pins = xway_info.pads;
/* load the gpio chip */
xway_chip.dev = &pdev->dev;
of_gpiochip_add(&xway_chip);
ret = gpiochip_add(&xway_chip);
if (ret) {
dev_err(&pdev->dev, "Failed to register gpio chip\n");
return ret;
}
/* setup the data needed by pinctrl */
xway_pctrl_desc.name = dev_name(&pdev->dev);
xway_pctrl_desc.npins = xway_chip.ngpio;
xway_info.num_pads = xway_chip.ngpio;
xway_info.num_mfp = xway_chip.ngpio;
xway_info.mfp = xway_soc->mfp;
xway_info.grps = xway_soc->grps;
xway_info.num_grps = xway_soc->num_grps;
xway_info.funcs = xway_soc->funcs;
xway_info.num_funcs = xway_soc->num_funcs;
xway_info.exin = xway_soc->exin;
xway_info.num_exin = xway_soc->num_exin;
/* register with the generic lantiq layer */
ret = ltq_pinctrl_register(pdev, &xway_info);
if (ret) {
dev_err(&pdev->dev, "Failed to register pinctrl driver\n");
return ret;
}
/* finish with registering the gpio range in pinctrl */
xway_gpio_range.npins = xway_chip.ngpio;
xway_gpio_range.base = xway_chip.base;
pinctrl_add_gpio_range(xway_info.pctrl, &xway_gpio_range);
dev_info(&pdev->dev, "Init done\n");
return 0;
}
static struct platform_driver pinmux_xway_driver = {
.probe = pinmux_xway_probe,
.driver = {
.name = "pinctrl-xway",
.owner = THIS_MODULE,
.of_match_table = xway_match,
},
};
static int __init pinmux_xway_init(void)
{
return platform_driver_register(&pinmux_xway_driver);
}
core_initcall_sync(pinmux_xway_init);