ralink: refresh patches

Signed-off-by: John Crispin <blogic@openwrt.org>

SVN-Revision: 39949

1 files changed, 0 insertions, 345 deletions

diff --git a/target/linux/ramips/patches-3.10/0116-i2c-MIPS-adds-ralink-I2C-driver.patch b/target/linux/ramips/patches-3.10/0116-i2c-MIPS-adds-ralink-I2C-driver.patch
deleted file mode 100644
index f8f86c00ff..0000000000
--- a/target/linux/ramips/patches-3.10/0116-i2c-MIPS-adds-ralink-I2C-driver.patch
+++ /dev/null
@@ -1,345 +0,0 @@
-From 4596818bca07e0928168970839e08875cf51b4cc Mon Sep 17 00:00:00 2001
-From: John Crispin <blogic@openwrt.org>
-Date: Mon, 29 Apr 2013 14:40:43 +0200
-Subject: [PATCH 26/33] i2c: MIPS: adds ralink I2C driver
-
-Signed-off-by: John Crispin <blogic@openwrt.org>
----
- .../devicetree/bindings/i2c/i2c-ralink.txt         |   27 ++
- drivers/i2c/busses/Kconfig                         |    4 +
- drivers/i2c/busses/Makefile                        |    1 +
- drivers/i2c/busses/i2c-ralink.c                    |  274 ++++++++++++++++++++
- 4 files changed, 306 insertions(+)
- create mode 100644 Documentation/devicetree/bindings/i2c/i2c-ralink.txt
- create mode 100644 drivers/i2c/busses/i2c-ralink.c
-
---- /dev/null
-+++ b/Documentation/devicetree/bindings/i2c/i2c-ralink.txt
-@@ -0,0 +1,27 @@
-+I2C for Ralink platforms
-+
-+Required properties :
-+- compatible : Must be "link,rt3052-i2c"
-+- reg: physical base address of the controller and length of memory mapped
-+     region.
-+- #address-cells = <1>;
-+- #size-cells = <0>;
-+
-+Optional properties:
-+- Child nodes conforming to i2c bus binding
-+
-+Example :
-+
-+palmbus@10000000 {
-+	i2c@900 {
-+		compatible = "link,rt3052-i2c";
-+		reg = <0x900 0x100>;
-+		#address-cells = <1>;
-+		#size-cells = <0>;
-+
-+		hwmon@4b {
-+			compatible = "national,lm92";
-+			reg = <0x4b>;
-+		};
-+	};
-+};
---- a/drivers/i2c/busses/Kconfig
-+++ b/drivers/i2c/busses/Kconfig
-@@ -630,6 +630,10 @@ config I2C_PXA_SLAVE
- 	  is necessary for systems where the PXA may be a target on the
- 	  I2C bus.
- 
-+config I2C_RALINK
-+	tristate "Ralink I2C Controller"
-+	select OF_I2C
-+
- config HAVE_S3C2410_I2C
- 	bool
- 	help
---- a/drivers/i2c/busses/Makefile
-+++ b/drivers/i2c/busses/Makefile
-@@ -62,6 +62,7 @@ obj-$(CONFIG_I2C_PNX)		+= i2c-pnx.o
- obj-$(CONFIG_I2C_PUV3)		+= i2c-puv3.o
- obj-$(CONFIG_I2C_PXA)		+= i2c-pxa.o
- obj-$(CONFIG_I2C_PXA_PCI)	+= i2c-pxa-pci.o
-+obj-$(CONFIG_I2C_RALINK)	+= i2c-ralink.o
- obj-$(CONFIG_I2C_S3C2410)	+= i2c-s3c2410.o
- obj-$(CONFIG_I2C_S6000)		+= i2c-s6000.o
- obj-$(CONFIG_I2C_SH7760)	+= i2c-sh7760.o
---- /dev/null
-+++ b/drivers/i2c/busses/i2c-ralink.c
-@@ -0,0 +1,274 @@
-+/*
-+ * drivers/i2c/busses/i2c-ralink.c
-+ *
-+ * Copyright (C) 2013 Steven Liu <steven_liu@mediatek.com>
-+ *
-+ * This software is licensed under the terms of the GNU General Public
-+ * License version 2, as published by the Free Software Foundation, and
-+ * may be copied, distributed, and modified under those terms.
-+ *
-+ * This program is distributed in the hope that it will be useful,
-+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
-+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-+ * GNU General Public License for more details.
-+ *
-+ */
-+
-+#include <linux/interrupt.h>
-+#include <linux/kernel.h>
-+#include <linux/module.h>
-+#include <linux/reset.h>
-+#include <linux/delay.h>
-+#include <linux/slab.h>
-+#include <linux/init.h>
-+#include <linux/errno.h>
-+#include <linux/platform_device.h>
-+#include <linux/i2c.h>
-+#include <linux/io.h>
-+#include <linux/of_i2c.h>
-+#include <linux/err.h>
-+
-+#include <asm/mach-ralink/ralink_regs.h>
-+
-+#define REG_CONFIG_REG		0x00
-+#define REG_CLKDIV_REG		0x04
-+#define REG_DEVADDR_REG		0x08
-+#define REG_ADDR_REG		0x0C
-+#define REG_DATAOUT_REG		0x10
-+#define REG_DATAIN_REG		0x14
-+#define REG_STATUS_REG		0x18
-+#define REG_STARTXFR_REG	0x1C
-+#define REG_BYTECNT_REG		0x20
-+
-+#define I2C_STARTERR		BIT(4)
-+#define I2C_ACKERR		BIT(3)
-+#define I2C_DATARDY		BIT(2)
-+#define I2C_SDOEMPTY		BIT(1)
-+#define I2C_BUSY		BIT(0)
-+
-+#define I2C_DEVADLEN_7		(6 << 2)
-+#define I2C_ADDRDIS		BIT(1)
-+
-+#define I2C_RETRY		0x400
-+
-+#define CLKDIV_VALUE		200 // clock rate is 40M, 40M / (200*2) = 100k (standard i2c bus rate).
-+//#define CLKDIV_VALUE		50 // clock rate is 40M, 40M / (50*2) = 400k (fast i2c bus rate).
-+
-+#define READ_CMD		0x01
-+#define WRITE_CMD		0x00
-+#define READ_BLOCK              64
-+
-+static void __iomem *membase;
-+static struct i2c_adapter *adapter;
-+
-+static void rt_i2c_w32(u32 val, unsigned reg)
-+{
-+	iowrite32(val, membase + reg);
-+}
-+
-+static u32 rt_i2c_r32(unsigned reg)
-+{
-+	return ioread32(membase + reg);
-+}
-+
-+static inline int rt_i2c_wait_rx_done(void)
-+{
-+	int retries = I2C_RETRY;
-+
-+	do {
-+		if (!retries--)
-+			break;
-+	} while(!(rt_i2c_r32(REG_STATUS_REG) & I2C_DATARDY));
-+
-+	return (retries < 0);
-+}
-+
-+static inline int rt_i2c_wait_idle(void)
-+{
-+	int retries = I2C_RETRY;
-+
-+	do {
-+		if (!retries--)
-+			break;
-+	} while(rt_i2c_r32(REG_STATUS_REG) & I2C_BUSY);
-+
-+	return (retries < 0);
-+}
-+
-+static inline int rt_i2c_wait_tx_done(void)
-+{
-+	int retries = I2C_RETRY;
-+
-+	do {
-+		if (!retries--)
-+			break;
-+	} while(!(rt_i2c_r32(REG_STATUS_REG) & I2C_SDOEMPTY));
-+
-+	return (retries < 0);
-+}
-+
-+static int rt_i2c_handle_msg(struct i2c_adapter *a, struct i2c_msg* msg)
-+{
-+	int i = 0, j = 0, pos = 0;
-+	int nblock = msg->len / READ_BLOCK;
-+        int rem = msg->len % READ_BLOCK;
-+
-+	if (msg->flags & I2C_M_TEN) {
-+		printk("10 bits addr not supported\n");
-+		return -EINVAL;
-+	}
-+
-+	if (msg->flags & I2C_M_RD) {
-+		for (i = 0; i < nblock; i++) {
-+			rt_i2c_wait_idle();
-+			rt_i2c_w32(READ_BLOCK - 1, REG_BYTECNT_REG);
-+			rt_i2c_w32(READ_CMD, REG_STARTXFR_REG);
-+			for (j = 0; j < READ_BLOCK; j++) {
-+				if (rt_i2c_wait_rx_done())
-+					return -1;
-+				msg->buf[pos++] = rt_i2c_r32(REG_DATAIN_REG);
-+			}
-+		}
-+
-+		rt_i2c_wait_idle();
-+		rt_i2c_w32(rem - 1, REG_BYTECNT_REG);
-+		rt_i2c_w32(READ_CMD, REG_STARTXFR_REG);
-+		for (i = 0; i < rem; i++) {
-+			if (rt_i2c_wait_rx_done())
-+				return -1;
-+			msg->buf[pos++] = rt_i2c_r32(REG_DATAIN_REG);
-+		}
-+	} else {
-+		rt_i2c_wait_idle();
-+		rt_i2c_w32(msg->len - 1, REG_BYTECNT_REG);
-+		for (i = 0; i < msg->len; i++) {
-+			rt_i2c_w32(msg->buf[i], REG_DATAOUT_REG);
-+			rt_i2c_w32(WRITE_CMD, REG_STARTXFR_REG);
-+			if (rt_i2c_wait_tx_done())
-+				return -1;
-+		}
-+	}
-+
-+	return 0;
-+}
-+
-+static int rt_i2c_master_xfer(struct i2c_adapter *a, struct i2c_msg *m, int n)
-+{
-+	int i = 0;
-+	int ret = 0;
-+
-+	if (rt_i2c_wait_idle()) {
-+		printk("i2c transfer failed\n");
-+		return 0;
-+	}
-+
-+	device_reset(a->dev.parent);
-+
-+	rt_i2c_w32(m->addr, REG_DEVADDR_REG);
-+	rt_i2c_w32(I2C_DEVADLEN_7 | I2C_ADDRDIS, REG_CONFIG_REG);
-+	rt_i2c_w32(CLKDIV_VALUE, REG_CLKDIV_REG);
-+
-+	for (i = 0; i < n && !ret; i++)
-+		ret = rt_i2c_handle_msg(a, &m[i]);
-+
-+	if (ret) {
-+		printk("i2c transfer failed\n");
-+		return 0;
-+	}
-+
-+	return n;
-+}
-+
-+static u32 rt_i2c_func(struct i2c_adapter *a)
-+{
-+	return I2C_FUNC_I2C | I2C_FUNC_SMBUS_EMUL;
-+}
-+
-+static const struct i2c_algorithm rt_i2c_algo = {
-+	.master_xfer	= rt_i2c_master_xfer,
-+	.functionality	= rt_i2c_func,
-+};
-+
-+static int rt_i2c_probe(struct platform_device *pdev)
-+{
-+	struct resource *res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
-+	int ret;
-+
-+	if (!res) {
-+		dev_err(&pdev->dev, "no memory resource found\n");
-+		return -ENODEV;
-+	}
-+
-+	adapter = devm_kzalloc(&pdev->dev, sizeof(struct i2c_adapter), GFP_KERNEL);
-+	if (!adapter) {
-+		dev_err(&pdev->dev, "failed to allocate i2c_adapter\n");
-+		return -ENOMEM;
-+	}
-+
-+	membase = devm_request_and_ioremap(&pdev->dev, res);
-+	if (IS_ERR(membase))
-+		return PTR_ERR(membase);
-+
-+	strlcpy(adapter->name, dev_name(&pdev->dev), sizeof(adapter->name));
-+	adapter->owner = THIS_MODULE;
-+	adapter->nr = pdev->id;
-+	adapter->timeout = HZ;
-+	adapter->algo = &rt_i2c_algo;
-+	adapter->class = I2C_CLASS_HWMON | I2C_CLASS_SPD;
-+	adapter->dev.parent = &pdev->dev;
-+	adapter->dev.of_node = pdev->dev.of_node;
-+
-+	ret = i2c_add_numbered_adapter(adapter);
-+	if (ret)
-+		return ret;
-+
-+	of_i2c_register_devices(adapter);
-+
-+	platform_set_drvdata(pdev, adapter);
-+
-+	dev_info(&pdev->dev, "loaded\n");
-+
-+	return 0;
-+}
-+
-+static int rt_i2c_remove(struct platform_device *pdev)
-+{
-+	platform_set_drvdata(pdev, NULL);
-+
-+	return 0;
-+}
-+
-+static const struct of_device_id i2c_rt_dt_ids[] = {
-+	{ .compatible = "ralink,rt2880-i2c", },
-+	{ /* sentinel */ }
-+};
-+
-+MODULE_DEVICE_TABLE(of, i2c_rt_dt_ids);
-+
-+static struct platform_driver rt_i2c_driver = {
-+	.probe		= rt_i2c_probe,
-+	.remove		= rt_i2c_remove,
-+	.driver		= {
-+		.owner	= THIS_MODULE,
-+		.name	= "i2c-ralink",
-+		.of_match_table = i2c_rt_dt_ids,
-+	},
-+};
-+
-+static int __init i2c_rt_init (void)
-+{
-+	return platform_driver_register(&rt_i2c_driver);
-+}
-+subsys_initcall(i2c_rt_init);
-+
-+static void __exit i2c_rt_exit (void)
-+{
-+	platform_driver_unregister(&rt_i2c_driver);
-+}
-+
-+module_exit (i2c_rt_exit);
-+
-+MODULE_AUTHOR("Steven Liu <steven_liu@mediatek.com>");
-+MODULE_DESCRIPTION("Ralink I2c host driver");
-+MODULE_LICENSE("GPL");
-+MODULE_ALIAS("platform:Ralink-I2C");