[brcm63xx] add 74x164 SPI chip support

Signed-off-by: Miguel Gaio <miguel.gaio@efixo.com>

git-svn-id: svn://svn.openwrt.org/openwrt/trunk@23499 3c298f89-4303-0410-b956-a3cf2f4a3e73

1 files changed, 0 insertions, 279 deletions

diff --git a/target/linux/brcm63xx/patches-2.6.35/211-nxp-74hc164-gpio-chip-driver.patch b/target/linux/brcm63xx/patches-2.6.35/211-nxp-74hc164-gpio-chip-driver.patch
deleted file mode 100644
index db88c16963..0000000000
--- a/target/linux/brcm63xx/patches-2.6.35/211-nxp-74hc164-gpio-chip-driver.patch
+++ /dev/null
@@ -1,279 +0,0 @@
---- a/drivers/gpio/Kconfig
-+++ b/drivers/gpio/Kconfig
-@@ -343,4 +343,12 @@ config GPIO_JANZ_TTL
- 	  This driver provides support for driving the pins in output
- 	  mode only. Input mode is not supported.
- 
-+comment "Other GPIO expanders"
-+
-+config GPIO_NXP_74HC164
-+       tristate "NXP 74HC164 Output expanders"
-+       help
-+         Platform driver for NXP 74HC164 8-output Expanders. This
-+         provides a GPIO interface supporting outputs.
-+
- endif
---- a/drivers/gpio/Makefile
-+++ b/drivers/gpio/Makefile
-@@ -17,6 +17,7 @@ obj-$(CONFIG_GPIO_MAX7301)	+= max7301.o
- obj-$(CONFIG_GPIO_MAX732X)	+= max732x.o
- obj-$(CONFIG_GPIO_MC33880)	+= mc33880.o
- obj-$(CONFIG_GPIO_MCP23S08)	+= mcp23s08.o
-+obj-$(CONFIG_GPIO_NXP_74HC164)	+= nxp_74hc164.o
- obj-$(CONFIG_GPIO_PCA953X)	+= pca953x.o
- obj-$(CONFIG_GPIO_PCF857X)	+= pcf857x.o
- obj-$(CONFIG_GPIO_PL061)	+= pl061.o
---- /dev/null
-+++ b/drivers/gpio/nxp_74hc164.c
-@@ -0,0 +1,226 @@
-+/*
-+ *  NXP 74HC164 - output expander  GPIO driver
-+ *
-+ *  Copyright (C) 2010 Gabor Juhos <juhosg@openwrt.org>
-+ *  Copyright (C) 2010 Miguel Gaio <miguel.gaio@efixo.com>
-+ *
-+ *  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.
-+ *
-+ *  Copy from nxp_74hc153.c code
-+ */
-+
-+#include <linux/module.h>
-+#include <linux/init.h>
-+#include <linux/gpio.h>
-+#include <linux/bitops.h>
-+#include <linux/platform_device.h>
-+#include <linux/nxp_74hc164.h>
-+
-+#define NXP_74HC164_NUM_GPIOS	8
-+
-+struct nxp_74hc164_chip {
-+	struct device		*parent;
-+	struct gpio_chip	gpio_chip;
-+	struct mutex		lock;
-+	long			mask;
-+};
-+
-+static void nxp_74hc164_set_value(struct gpio_chip *, unsigned, int);
-+
-+static struct nxp_74hc164_chip *gpio_to_nxp(struct gpio_chip *gc)
-+{
-+	return container_of(gc, struct nxp_74hc164_chip, gpio_chip);
-+}
-+
-+static int nxp_74hc164_direction_input(struct gpio_chip *gc, unsigned offset)
-+{
-+	WARN_ON(1);
-+	return -EINVAL;
-+}
-+
-+static int nxp_74hc164_direction_output(struct gpio_chip *gc,
-+					unsigned offset, int val)
-+{
-+	nxp_74hc164_set_value(gc, offset, val);
-+	return 0;
-+}
-+
-+static int nxp_74hc164_get_value(struct gpio_chip *gc, unsigned offset)
-+{
-+	struct nxp_74hc164_chip *nxp = gpio_to_nxp(gc);
-+	int ret;
-+
-+	mutex_lock(&nxp->lock);
-+	ret = test_bit(offset, &nxp->mask);
-+	mutex_unlock(&nxp->lock);
-+
-+	return ret;
-+}
-+
-+static void nxp_74hc164_set_value(struct gpio_chip *gc,
-+				  unsigned offset, int val)
-+{
-+	struct nxp_74hc164_chip *nxp;
-+	struct nxp_74hc164_platform_data *pdata;
-+	long mask;
-+	int refresh;
-+	int i;
-+
-+	nxp = gpio_to_nxp(gc);
-+	pdata = nxp->parent->platform_data;
-+
-+	mutex_lock(&nxp->lock);
-+	if (val)
-+		refresh = (test_and_set_bit(offset, &nxp->mask) != val);
-+	else
-+		refresh = (test_and_clear_bit(offset, &nxp->mask) != val);
-+
-+	if (refresh) {
-+		mask = nxp->mask;
-+		for (i = 8; i > 0; --i, mask <<= 1) {
-+			gpio_set_value(pdata->gpio_pin_data, mask & 0x80);
-+			gpio_set_value(pdata->gpio_pin_clk, 1);
-+			gpio_set_value(pdata->gpio_pin_clk, 0);
-+		}
-+	}
-+	mutex_unlock(&nxp->lock);
-+}
-+
-+static int __devinit nxp_74hc164_probe(struct platform_device *pdev)
-+{
-+	struct nxp_74hc164_platform_data *pdata;
-+	struct nxp_74hc164_chip *nxp;
-+	struct gpio_chip *gc;
-+	int err;
-+
-+	pdata = pdev->dev.platform_data;
-+	if (pdata == NULL) {
-+		dev_dbg(&pdev->dev, "no platform data specified\n");
-+		return -EINVAL;
-+	}
-+
-+	nxp = kzalloc(sizeof(struct nxp_74hc164_chip), GFP_KERNEL);
-+	if (nxp == NULL) {
-+		dev_err(&pdev->dev, "no memory for private data\n");
-+		return -ENOMEM;
-+	}
-+
-+	err = gpio_request(pdata->gpio_pin_clk, dev_name(&pdev->dev));
-+	if (err) {
-+		dev_err(&pdev->dev, "unable to claim gpio %u, err=%d\n",
-+			pdata->gpio_pin_clk, err);
-+		goto err_free_nxp;
-+	}
-+
-+	err = gpio_request(pdata->gpio_pin_data, dev_name(&pdev->dev));
-+	if (err) {
-+		dev_err(&pdev->dev, "unable to claim gpio %u, err=%d\n",
-+			pdata->gpio_pin_data, err);
-+		goto err_free_clk;
-+	}
-+
-+	err = gpio_direction_output(pdata->gpio_pin_clk, 0);
-+	if (err) {
-+		dev_err(&pdev->dev,
-+			"unable to set direction of gpio %u, err=%d\n",
-+			pdata->gpio_pin_clk, err);
-+		goto err_free_data;
-+	}
-+
-+	err = gpio_direction_output(pdata->gpio_pin_data, 0);
-+	if (err) {
-+		dev_err(&pdev->dev,
-+			"unable to set direction of gpio %u, err=%d\n",
-+			pdata->gpio_pin_data, err);
-+		goto err_free_data;
-+	}
-+
-+	nxp->parent = &pdev->dev;
-+	mutex_init(&nxp->lock);
-+
-+	gc = &nxp->gpio_chip;
-+
-+	gc->direction_input  = nxp_74hc164_direction_input;
-+	gc->direction_output = nxp_74hc164_direction_output;
-+	gc->get = nxp_74hc164_get_value;
-+	gc->set = nxp_74hc164_set_value;
-+	gc->can_sleep = 1;
-+
-+	gc->base = pdata->gpio_base;
-+	gc->ngpio = NXP_74HC164_NUM_GPIOS;
-+	gc->label = dev_name(nxp->parent);
-+	gc->dev = nxp->parent;
-+	gc->owner = THIS_MODULE;
-+
-+	err = gpiochip_add(&nxp->gpio_chip);
-+	if (err) {
-+		dev_err(&pdev->dev, "unable to add gpio chip, err=%d\n", err);
-+		goto err_free_data;
-+	}
-+
-+	platform_set_drvdata(pdev, nxp);
-+	return 0;
-+
-+ err_free_data:
-+	gpio_free(pdata->gpio_pin_data);
-+ err_free_clk:
-+	gpio_free(pdata->gpio_pin_clk);
-+ err_free_nxp:
-+	kfree(nxp);
-+	return err;
-+}
-+
-+static int nxp_74hc164_remove(struct platform_device *pdev)
-+{
-+	struct nxp_74hc164_chip *nxp = platform_get_drvdata(pdev);
-+	struct nxp_74hc164_platform_data *pdata = pdev->dev.platform_data;
-+
-+	if (nxp) {
-+		int err;
-+
-+		err = gpiochip_remove(&nxp->gpio_chip);
-+		if (err) {
-+			dev_err(&pdev->dev,
-+				"unable to remove gpio chip, err=%d\n",
-+				err);
-+			return err;
-+		}
-+
-+		gpio_free(pdata->gpio_pin_clk);
-+		gpio_free(pdata->gpio_pin_data);
-+
-+		kfree(nxp);
-+		platform_set_drvdata(pdev, NULL);
-+	}
-+
-+	return 0;
-+}
-+
-+static struct platform_driver nxp_74hc164_driver = {
-+	.probe		= nxp_74hc164_probe,
-+	.remove		= __devexit_p(nxp_74hc164_remove),
-+	.driver = {
-+		.name	= NXP_74HC164_DRIVER_NAME,
-+		.owner	= THIS_MODULE,
-+	},
-+};
-+
-+static int __init nxp_74hc164_init(void)
-+{
-+	return platform_driver_register(&nxp_74hc164_driver);
-+}
-+subsys_initcall(nxp_74hc164_init);
-+
-+static void __exit nxp_74hc164_exit(void)
-+{
-+	platform_driver_unregister(&nxp_74hc164_driver);
-+}
-+module_exit(nxp_74hc164_exit);
-+
-+MODULE_AUTHOR("Gabor Juhos <juhosg@openwrt.org>");
-+MODULE_AUTHOR("Miguel Gaio <miguel.gaio@efixo.com>");
-+MODULE_DESCRIPTION("GPIO expander driver for NXP 74HC164");
-+MODULE_LICENSE("GPL v2");
-+MODULE_ALIAS("platform:" NXP_74HC164_DRIVER_NAME);
---- /dev/null
-+++ b/include/linux/nxp_74hc164.h
-@@ -0,0 +1,22 @@
-+/*
-+ *  NXP 74HC164 - Dual 4-input multiplexer defines
-+ *
-+ *  Copyright (C) 2010 Gabor Juhos <juhosg@openwrt.org>
-+ *
-+ *  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.
-+ */
-+
-+#ifndef _NXP_74HC164_H
-+#define _NXP_74HC164_H
-+
-+#define NXP_74HC164_DRIVER_NAME "nxp-74hc164"
-+
-+struct nxp_74hc164_platform_data {
-+	unsigned	gpio_base;
-+	unsigned	gpio_pin_data;
-+	unsigned	gpio_pin_clk;
-+};
-+
-+#endif /* _NXP_74HC164_H */