[lantiq] adds 3.3 patches and files

git-svn-id: svn://svn.openwrt.org/openwrt/trunk@31307 3c298f89-4303-0410-b956-a3cf2f4a3e73

1 files changed, 501 insertions, 0 deletions

diff --git a/target/linux/lantiq/patches-3.3/0006-MIPS-lantiq-add-support-for-FALC-ON-GPIOs.patch b/target/linux/lantiq/patches-3.3/0006-MIPS-lantiq-add-support-for-FALC-ON-GPIOs.patch
new file mode 100644
index 0000000000..3536496883
--- /dev/null
+++ b/target/linux/lantiq/patches-3.3/0006-MIPS-lantiq-add-support-for-FALC-ON-GPIOs.patch
@@ -0,0 +1,501 @@
+From 92cd0e8b6247ac8c0db5cdc570543c6caa51b1ab Mon Sep 17 00:00:00 2001
+From: John Crispin <blogic@openwrt.org>
+Date: Thu, 11 Aug 2011 14:35:02 +0200
+Subject: [PATCH 06/70] MIPS: lantiq: add support for FALC-ON GPIOs
+
+FALC-ON uses a different GPIO core than the other Lantiq SoCs. This patch adds
+the new driver.
+
+Signed-off-by: Thomas Langer <thomas.langer@lantiq.com>
+Signed-off-by: John Crispin <blogic@openwrt.org>
+---
+ arch/mips/lantiq/falcon/Makefile  |    2 +-
+ arch/mips/lantiq/falcon/devices.c |   41 ++++
+ arch/mips/lantiq/falcon/devices.h |    2 +
+ arch/mips/lantiq/falcon/gpio.c    |  399 +++++++++++++++++++++++++++++++++++++
+ 4 files changed, 443 insertions(+), 1 deletions(-)
+ create mode 100644 arch/mips/lantiq/falcon/gpio.c
+
+diff --git a/arch/mips/lantiq/falcon/Makefile b/arch/mips/lantiq/falcon/Makefile
+index e9c7455..de72209 100644
+--- a/arch/mips/lantiq/falcon/Makefile
++++ b/arch/mips/lantiq/falcon/Makefile
+@@ -1 +1 @@
+-obj-y := clk.o prom.o reset.o sysctrl.o devices.o
++obj-y := clk.o prom.o reset.o sysctrl.o devices.o gpio.o
+diff --git a/arch/mips/lantiq/falcon/devices.c b/arch/mips/lantiq/falcon/devices.c
+index c4606f2..4f47b44 100644
+--- a/arch/mips/lantiq/falcon/devices.c
++++ b/arch/mips/lantiq/falcon/devices.c
+@@ -9,6 +9,7 @@
+ 
+ #include <linux/platform_device.h>
+ #include <linux/mtd/nand.h>
++#include <linux/gpio.h>
+ 
+ #include <lantiq_soc.h>
+ 
+@@ -85,3 +86,43 @@ falcon_register_nand(void)
+ {
+ 	platform_device_register(&ltq_flash_nand);
+ }
++
++/* gpio */
++#define DECLARE_GPIO_RES(port) \
++static struct resource falcon_gpio ## port ## _res[] = { \
++	MEM_RES("gpio"#port, LTQ_GPIO ## port ## _BASE_ADDR, \
++		LTQ_GPIO ## port ## _SIZE), \
++	MEM_RES("padctrl"#port, LTQ_PADCTRL ## port ## _BASE_ADDR, \
++		LTQ_PADCTRL ## port ## _SIZE), \
++	IRQ_RES("gpio_mux"#port, FALCON_IRQ_GPIO_P ## port) \
++}
++DECLARE_GPIO_RES(0);
++DECLARE_GPIO_RES(1);
++DECLARE_GPIO_RES(2);
++DECLARE_GPIO_RES(3);
++DECLARE_GPIO_RES(4);
++
++void __init
++falcon_register_gpio(void)
++{
++	platform_device_register_simple("falcon_gpio", 0,
++		falcon_gpio0_res, ARRAY_SIZE(falcon_gpio0_res));
++	platform_device_register_simple("falcon_gpio", 1,
++		falcon_gpio1_res, ARRAY_SIZE(falcon_gpio1_res));
++	platform_device_register_simple("falcon_gpio", 2,
++		falcon_gpio2_res, ARRAY_SIZE(falcon_gpio2_res));
++	ltq_sysctl_activate(SYSCTL_SYS1, ACTS_PADCTRL1 | ACTS_P1);
++	ltq_sysctl_activate(SYSCTL_SYSETH, ACTS_PADCTRL0 |
++		ACTS_PADCTRL2 | ACTS_P0 | ACTS_P2);
++}
++
++void __init
++falcon_register_gpio_extra(void)
++{
++	platform_device_register_simple("falcon_gpio", 3,
++		falcon_gpio3_res, ARRAY_SIZE(falcon_gpio3_res));
++	platform_device_register_simple("falcon_gpio", 4,
++		falcon_gpio4_res, ARRAY_SIZE(falcon_gpio4_res));
++	ltq_sysctl_activate(SYSCTL_SYS1,
++		ACTS_PADCTRL3 | ACTS_PADCTRL4 | ACTS_P3 | ACTS_P4);
++}
+diff --git a/arch/mips/lantiq/falcon/devices.h b/arch/mips/lantiq/falcon/devices.h
+index e802a7c..18be8b6 100644
+--- a/arch/mips/lantiq/falcon/devices.h
++++ b/arch/mips/lantiq/falcon/devices.h
+@@ -14,5 +14,7 @@
+ #include "../devices.h"
+ 
+ extern void falcon_register_nand(void);
++extern void falcon_register_gpio(void);
++extern void falcon_register_gpio_extra(void);
+ 
+ #endif
+diff --git a/arch/mips/lantiq/falcon/gpio.c b/arch/mips/lantiq/falcon/gpio.c
+new file mode 100644
+index 0000000..28f8639
+--- /dev/null
++++ b/arch/mips/lantiq/falcon/gpio.c
+@@ -0,0 +1,399 @@
++/*
++ *  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) 2011 Thomas Langer <thomas.langer@lantiq.com>
++ *  Copyright (C) 2011 John Crispin <blogic@openwrt.org>
++ */
++
++#include <linux/gpio.h>
++#include <linux/interrupt.h>
++#include <linux/slab.h>
++#include <linux/export.h>
++#include <linux/platform_device.h>
++
++#include <lantiq_soc.h>
++
++/* Multiplexer Control Register */
++#define LTQ_PADC_MUX(x)         (x * 0x4)
++/* Pad Control Availability Register */
++#define LTQ_PADC_AVAIL          0x000000F0
++
++/* Data Output Register */
++#define LTQ_GPIO_OUT            0x00000000
++/* Data Input Register */
++#define LTQ_GPIO_IN             0x00000004
++/* Direction Register */
++#define LTQ_GPIO_DIR            0x00000008
++/* External Interrupt Control Register 0 */
++#define LTQ_GPIO_EXINTCR0       0x00000018
++/* External Interrupt Control Register 1 */
++#define LTQ_GPIO_EXINTCR1       0x0000001C
++/* IRN Capture Register */
++#define LTQ_GPIO_IRNCR          0x00000020
++/* IRN Interrupt Configuration Register */
++#define LTQ_GPIO_IRNCFG		0x0000002C
++/* IRN Interrupt Enable Set Register */
++#define LTQ_GPIO_IRNRNSET       0x00000030
++/* IRN Interrupt Enable Clear Register */
++#define LTQ_GPIO_IRNENCLR       0x00000034
++/* Output Set Register */
++#define LTQ_GPIO_OUTSET         0x00000040
++/* Output Cler Register */
++#define LTQ_GPIO_OUTCLR         0x00000044
++/* Direction Clear Register */
++#define LTQ_GPIO_DIRSET         0x00000048
++/* Direction Set Register */
++#define LTQ_GPIO_DIRCLR         0x0000004C
++
++/* turn a gpio_chip into a falcon_gpio_port */
++#define ctop(c)		container_of(c, struct falcon_gpio_port, gpio_chip)
++/* turn a irq_data into a falcon_gpio_port */
++#define itop(i)		((struct falcon_gpio_port *) irq_get_chip_data(i->irq))
++
++#define ltq_pad_r32(p, reg)		ltq_r32(p->pad + reg)
++#define ltq_pad_w32(p, val, reg)	ltq_w32(val, p->pad + reg)
++#define ltq_pad_w32_mask(c, clear, set, reg) \
++		ltq_pad_w32(c, (ltq_pad_r32(c, reg) & ~(clear)) | (set), reg)
++
++#define ltq_port_r32(p, reg)		ltq_r32(p->port + reg)
++#define ltq_port_w32(p, val, reg)	ltq_w32(val, p->port + reg)
++#define ltq_port_w32_mask(p, clear, set, reg) \
++		ltq_port_w32(p, (ltq_port_r32(p, reg) & ~(clear)) | (set), reg)
++
++#define MAX_PORTS		5
++#define PINS_PER_PORT		32
++
++struct falcon_gpio_port {
++	struct gpio_chip gpio_chip;
++	void __iomem *pad;
++	void __iomem *port;
++	unsigned int irq_base;
++	unsigned int chained_irq;
++};
++
++static struct falcon_gpio_port ltq_gpio_port[MAX_PORTS];
++
++int gpio_to_irq(unsigned int gpio)
++{
++	return __gpio_to_irq(gpio);
++}
++EXPORT_SYMBOL(gpio_to_irq);
++
++int ltq_gpio_mux_set(unsigned int pin, unsigned int mux)
++{
++	int port = pin / 100;
++	int offset = pin % 100;
++	struct falcon_gpio_port *gpio_port;
++
++	if ((offset >= PINS_PER_PORT) || (port >= MAX_PORTS))
++		return -EINVAL;
++
++	gpio_port = &ltq_gpio_port[port];
++	ltq_pad_w32(gpio_port, mux & 0x3, LTQ_PADC_MUX(offset));
++
++	return 0;
++}
++EXPORT_SYMBOL(ltq_gpio_mux_set);
++
++int ltq_gpio_request(unsigned int pin, unsigned int mux,
++			unsigned int dir, const char *name)
++{
++	int port = pin / 100;
++	int offset = pin % 100;
++
++	if (offset >= PINS_PER_PORT || port >= MAX_PORTS)
++		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);
++
++	return ltq_gpio_mux_set(pin, mux);
++}
++EXPORT_SYMBOL(ltq_gpio_request);
++
++static int
++falcon_gpio_direction_input(struct gpio_chip *chip, unsigned int offset)
++{
++	ltq_port_w32(ctop(chip), 1 << offset, LTQ_GPIO_DIRCLR);
++
++	return 0;
++}
++
++static void
++falcon_gpio_set(struct gpio_chip *chip, unsigned int offset, int value)
++{
++	if (value)
++		ltq_port_w32(ctop(chip), 1 << offset, LTQ_GPIO_OUTSET);
++	else
++		ltq_port_w32(ctop(chip), 1 << offset, LTQ_GPIO_OUTCLR);
++}
++
++static int
++falcon_gpio_direction_output(struct gpio_chip *chip,
++			unsigned int offset, int value)
++{
++	falcon_gpio_set(chip, offset, value);
++	ltq_port_w32(ctop(chip), 1 << offset, LTQ_GPIO_DIRSET);
++
++	return 0;
++}
++
++static int
++falcon_gpio_get(struct gpio_chip *chip, unsigned int offset)
++{
++	if ((ltq_port_r32(ctop(chip), LTQ_GPIO_DIR) >> offset) & 1)
++		return (ltq_port_r32(ctop(chip), LTQ_GPIO_OUT) >> offset) & 1;
++	else
++		return (ltq_port_r32(ctop(chip), LTQ_GPIO_IN) >> offset) & 1;
++}
++
++static int
++falcon_gpio_request(struct gpio_chip *chip, unsigned offset)
++{
++	if ((ltq_pad_r32(ctop(chip), LTQ_PADC_AVAIL) >> offset) & 1) {
++		if (ltq_pad_r32(ctop(chip), LTQ_PADC_MUX(offset)) > 1)
++			return -EBUSY;
++		/* switch on gpio function */
++		ltq_pad_w32(ctop(chip), 1, LTQ_PADC_MUX(offset));
++		return 0;
++	}
++
++	return -ENODEV;
++}
++
++static void
++falcon_gpio_free(struct gpio_chip *chip, unsigned offset)
++{
++	if ((ltq_pad_r32(ctop(chip), LTQ_PADC_AVAIL) >> offset) & 1) {
++		if (ltq_pad_r32(ctop(chip), LTQ_PADC_MUX(offset)) > 1)
++			return;
++		/* switch off gpio function */
++		ltq_pad_w32(ctop(chip), 0, LTQ_PADC_MUX(offset));
++	}
++}
++
++static int
++falcon_gpio_to_irq(struct gpio_chip *chip, unsigned offset)
++{
++	return ctop(chip)->irq_base + offset;
++}
++
++static void
++falcon_gpio_disable_irq(struct irq_data *d)
++{
++	unsigned int offset = d->irq - itop(d)->irq_base;
++
++	ltq_port_w32(itop(d), 1 << offset, LTQ_GPIO_IRNENCLR);
++}
++
++static void
++falcon_gpio_enable_irq(struct irq_data *d)
++{
++	unsigned int offset = d->irq - itop(d)->irq_base;
++
++	if (!ltq_pad_r32(itop(d), LTQ_PADC_MUX(offset)) < 1)
++		/* switch on gpio function */
++		ltq_pad_w32(itop(d), 1, LTQ_PADC_MUX(offset));
++
++	ltq_port_w32(itop(d), 1 << offset, LTQ_GPIO_IRNRNSET);
++}
++
++static void
++falcon_gpio_ack_irq(struct irq_data *d)
++{
++	unsigned int offset = d->irq - itop(d)->irq_base;
++
++	ltq_port_w32(itop(d), 1 << offset, LTQ_GPIO_IRNCR);
++}
++
++static void
++falcon_gpio_mask_and_ack_irq(struct irq_data *d)
++{
++	unsigned int offset = d->irq - itop(d)->irq_base;
++
++	ltq_port_w32(itop(d), 1 << offset, LTQ_GPIO_IRNENCLR);
++	ltq_port_w32(itop(d), 1 << offset, LTQ_GPIO_IRNCR);
++}
++
++static struct irq_chip falcon_gpio_irq_chip;
++static int
++falcon_gpio_irq_type(struct irq_data *d, unsigned int type)
++{
++	unsigned int offset = d->irq - itop(d)->irq_base;
++	unsigned int mask = 1 << offset;
++
++	if ((type & IRQ_TYPE_SENSE_MASK) == IRQ_TYPE_NONE)
++		return 0;
++
++	if ((type & (IRQ_TYPE_LEVEL_HIGH | IRQ_TYPE_LEVEL_LOW)) != 0) {
++		/* level triggered */
++		ltq_port_w32_mask(itop(d), 0, mask, LTQ_GPIO_IRNCFG);
++		irq_set_chip_and_handler_name(d->irq,
++				&falcon_gpio_irq_chip, handle_level_irq, "mux");
++	} else {
++		/* edge triggered */
++		ltq_port_w32_mask(itop(d), mask, 0, LTQ_GPIO_IRNCFG);
++		irq_set_chip_and_handler_name(d->irq,
++			&falcon_gpio_irq_chip, handle_simple_irq, "mux");
++	}
++
++	if ((type & IRQ_TYPE_EDGE_BOTH) == IRQ_TYPE_EDGE_BOTH) {
++		ltq_port_w32_mask(itop(d), mask, 0, LTQ_GPIO_EXINTCR0);
++		ltq_port_w32_mask(itop(d), 0, mask, LTQ_GPIO_EXINTCR1);
++	} else {
++		if ((type & (IRQ_TYPE_EDGE_RISING | IRQ_TYPE_LEVEL_HIGH)) != 0)
++			/* positive logic: rising edge, high level */
++			ltq_port_w32_mask(itop(d), mask, 0, LTQ_GPIO_EXINTCR0);
++		else
++			/* negative logic: falling edge, low level */
++			ltq_port_w32_mask(itop(d), 0, mask, LTQ_GPIO_EXINTCR0);
++		ltq_port_w32_mask(itop(d), mask, 0, LTQ_GPIO_EXINTCR1);
++	}
++
++	return gpio_direction_input(itop(d)->gpio_chip.base + offset);
++}
++
++static void
++falcon_gpio_irq_handler(unsigned int irq, struct irq_desc *desc)
++{
++	struct falcon_gpio_port *gpio_port = irq_desc_get_handler_data(desc);
++	unsigned long irncr;
++	int offset;
++
++	/* acknowledge interrupt */
++	irncr = ltq_port_r32(gpio_port, LTQ_GPIO_IRNCR);
++	ltq_port_w32(gpio_port, irncr, LTQ_GPIO_IRNCR);
++
++	desc->irq_data.chip->irq_ack(&desc->irq_data);
++
++	for_each_set_bit(offset, &irncr, gpio_port->gpio_chip.ngpio)
++		generic_handle_irq(gpio_port->irq_base + offset);
++}
++
++static struct irq_chip falcon_gpio_irq_chip = {
++	.name = "gpio_irq_mux",
++	.irq_mask = falcon_gpio_disable_irq,
++	.irq_unmask = falcon_gpio_enable_irq,
++	.irq_ack = falcon_gpio_ack_irq,
++	.irq_mask_ack = falcon_gpio_mask_and_ack_irq,
++	.irq_set_type = falcon_gpio_irq_type,
++};
++
++static struct irqaction gpio_cascade = {
++	.handler = no_action,
++	.flags = IRQF_DISABLED,
++	.name = "gpio_cascade",
++};
++
++static int
++falcon_gpio_probe(struct platform_device *pdev)
++{
++	struct falcon_gpio_port *gpio_port;
++	int ret, i;
++	struct resource *gpiores, *padres;
++	int irq;
++
++	if (pdev->id >= MAX_PORTS)
++		return -ENODEV;
++
++	gpiores = platform_get_resource(pdev, IORESOURCE_MEM, 0);
++	padres = platform_get_resource(pdev, IORESOURCE_MEM, 1);
++	irq = platform_get_irq(pdev, 0);
++	if (!gpiores || !padres)
++		return -ENODEV;
++
++	gpio_port = &ltq_gpio_port[pdev->id];
++	gpio_port->gpio_chip.label = "falcon-gpio";
++	gpio_port->gpio_chip.direction_input = falcon_gpio_direction_input;
++	gpio_port->gpio_chip.direction_output = falcon_gpio_direction_output;
++	gpio_port->gpio_chip.get = falcon_gpio_get;
++	gpio_port->gpio_chip.set = falcon_gpio_set;
++	gpio_port->gpio_chip.request = falcon_gpio_request;
++	gpio_port->gpio_chip.free = falcon_gpio_free;
++	gpio_port->gpio_chip.base = 100 * pdev->id;
++	gpio_port->gpio_chip.ngpio = 32;
++	gpio_port->gpio_chip.dev = &pdev->dev;
++
++	gpio_port->port = ltq_remap_resource(gpiores);
++	gpio_port->pad = ltq_remap_resource(padres);
++
++	if (!gpio_port->port || !gpio_port->pad) {
++		dev_err(&pdev->dev, "Could not map io ranges\n");
++		ret = -ENOMEM;
++		goto err;
++	}
++
++	if (irq > 0) {
++		/* irq_chip support */
++		gpio_port->gpio_chip.to_irq = falcon_gpio_to_irq;
++		gpio_port->irq_base = INT_NUM_EXTRA_START + (32 * pdev->id);
++
++		for (i = 0; i < 32; i++) {
++			irq_set_chip_and_handler_name(gpio_port->irq_base + i,
++				&falcon_gpio_irq_chip, handle_simple_irq,
++				"mux");
++			irq_set_chip_data(gpio_port->irq_base + i, gpio_port);
++			/* set to negative logic (falling edge, low level) */
++			ltq_port_w32_mask(gpio_port, 0, 1 << i,
++				LTQ_GPIO_EXINTCR0);
++		}
++
++		gpio_port->chained_irq = irq;
++		setup_irq(irq, &gpio_cascade);
++		irq_set_handler_data(irq, gpio_port);
++		irq_set_chained_handler(irq, falcon_gpio_irq_handler);
++	}
++
++	ret = gpiochip_add(&gpio_port->gpio_chip);
++	if (ret < 0) {
++		dev_err(&pdev->dev, "Could not register gpiochip %d, %d\n",
++			pdev->id, ret);
++		goto err;
++	}
++	platform_set_drvdata(pdev, gpio_port);
++	return ret;
++
++err:
++	dev_err(&pdev->dev, "Error in gpio_probe %d, %d\n", pdev->id, ret);
++	if (gpiores)
++		release_resource(gpiores);
++	if (padres)
++		release_resource(padres);
++
++	if (gpio_port->port)
++		iounmap(gpio_port->port);
++	if (gpio_port->pad)
++		iounmap(gpio_port->pad);
++	return ret;
++}
++
++static struct platform_driver falcon_gpio_driver = {
++	.probe = falcon_gpio_probe,
++	.driver = {
++		.name = "falcon_gpio",
++		.owner = THIS_MODULE,
++	},
++};
++
++int __init
++falcon_gpio_init(void)
++{
++	int ret;
++
++	pr_info("FALC(tm) ON GPIO Driver, (C) 2011 Lantiq Deutschland Gmbh\n");
++	ret = platform_driver_register(&falcon_gpio_driver);
++	if (ret)
++		pr_err("falcon_gpio: Error registering platform driver!");
++	return ret;
++}
++
++postcore_initcall(falcon_gpio_init);
+-- 
+1.7.9.1
+