ralink: drop v3.8 support

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

SVN-Revision: 37311

1 files changed, 0 insertions, 341 deletions

diff --git a/target/linux/ramips/patches-3.8/0061-DMA-MIPS-ralink-add-dmaengine-driver.patch b/target/linux/ramips/patches-3.8/0061-DMA-MIPS-ralink-add-dmaengine-driver.patch
deleted file mode 100644
index a2f8f09ac1..0000000000
--- a/target/linux/ramips/patches-3.8/0061-DMA-MIPS-ralink-add-dmaengine-driver.patch
+++ /dev/null
@@ -1,341 +0,0 @@
-From 1db0d19afe5830f7d020c7c5386be8cc20cf0f15 Mon Sep 17 00:00:00 2001
-From: John Crispin <blogic@openwrt.org>
-Date: Thu, 23 May 2013 18:45:29 +0200
-Subject: [PATCH 61/79] DMA: MIPS: ralink: add dmaengine driver
-
-Signed-off-by: John Crispin <blogic@openwrt.org>
----
- drivers/dma/Kconfig       |    7 ++
- drivers/dma/Makefile      |    1 +
- drivers/dma/ralink_gdma.c |  229 +++++++++++++++++++++++++++++++++++++++++++++
- drivers/dma/ralink_gdma.h |   55 +++++++++++
- 4 files changed, 292 insertions(+)
- create mode 100644 drivers/dma/ralink_gdma.c
- create mode 100644 drivers/dma/ralink_gdma.h
-
-diff --git a/drivers/dma/Kconfig b/drivers/dma/Kconfig
-index d4c1218..323f684 100644
---- a/drivers/dma/Kconfig
-+++ b/drivers/dma/Kconfig
-@@ -320,6 +320,13 @@ config MMP_PDMA
- 	help
- 	  Support the MMP PDMA engine for PXA and MMP platfrom.
- 
-+config RALINK_GDMA
-+	bool "Ralink Generic DMA support"
-+	depends on RALINK
-+	select DMA_ENGINE
-+	help
-+	  Support the GDMA engine for MIPS based Ralink SoC.
-+
- config DMA_ENGINE
- 	bool
- 
-diff --git a/drivers/dma/Makefile b/drivers/dma/Makefile
-index 7428fea..a981e2c 100644
---- a/drivers/dma/Makefile
-+++ b/drivers/dma/Makefile
-@@ -34,3 +34,4 @@ obj-$(CONFIG_DMA_SA11X0) += sa11x0-dma.o
- obj-$(CONFIG_MMP_TDMA) += mmp_tdma.o
- obj-$(CONFIG_DMA_OMAP) += omap-dma.o
- obj-$(CONFIG_MMP_PDMA) += mmp_pdma.o
-+obj-$(CONFIG_RALINK_GDMA) += ralink_gdma.o
-diff --git a/drivers/dma/ralink_gdma.c b/drivers/dma/ralink_gdma.c
-new file mode 100644
-index 0000000..be7c317
---- /dev/null
-+++ b/drivers/dma/ralink_gdma.c
-@@ -0,0 +1,229 @@
-+#include <linux/init.h>
-+#include <linux/module.h>
-+#include <linux/slab.h>
-+#include <linux/delay.h>
-+#include <linux/dma-mapping.h>
-+#include <linux/spinlock.h>
-+#include <linux/interrupt.h>
-+#include <linux/platform_device.h>
-+#include <linux/of_platform.h>
-+#include <linux/memory.h>
-+
-+#include "ralink_gdma.h"
-+
-+#define SURFBOARDINT_DMA	10
-+#define MEMCPY_DMA_CH	8
-+#define to_rt2880_dma_chan(chan)            \
-+	container_of(chan, struct rt2880_dma_chan, common)
-+
-+static dma_cookie_t rt2880_dma_tx_submit(struct dma_async_tx_descriptor *tx)
-+{
-+	dma_cookie_t cookie;
-+
-+	cookie = tx->chan->cookie;
-+
-+	return cookie;
-+}
-+
-+#define MIN_RTDMA_PKT_LEN	128
-+static struct dma_async_tx_descriptor *
-+rt2880_dma_prep_dma_memcpy(struct dma_chan *chan, dma_addr_t dest, dma_addr_t src,
-+		size_t len, unsigned long flags)
-+{
-+	struct rt2880_dma_chan *rt_chan = to_rt2880_dma_chan(chan);
-+	unsigned long mid_offset;
-+
-+	spin_lock_bh(&rt_chan->lock);
-+
-+	if(len < MIN_RTDMA_PKT_LEN) {
-+		memcpy(phys_to_virt(dest), phys_to_virt(src), len);
-+	} else {
-+		mid_offset = len/2;
-+
-+		/* Lower parts are transferred  by GDMA.
-+		 * Upper parts are transferred by CPU.
-+		 */
-+		RT_DMA_WRITE_REG(RT_DMA_SRC_REG(MEMCPY_DMA_CH), src);
-+		RT_DMA_WRITE_REG(RT_DMA_DST_REG(MEMCPY_DMA_CH), dest);
-+		RT_DMA_WRITE_REG(RT_DMA_CTRL_REG(MEMCPY_DMA_CH), (mid_offset << 16) | (3 << 3) | (3 << 0));
-+
-+		memcpy(phys_to_virt(dest)+mid_offset, phys_to_virt(src)+mid_offset, len-mid_offset);
-+
-+		dma_async_tx_descriptor_init(&rt_chan->txd, chan);
-+
-+		while((RT_DMA_READ_REG(RT_DMA_DONEINT) & (0x1<<MEMCPY_DMA_CH))==0);
-+		RT_DMA_WRITE_REG(RT_DMA_DONEINT, (1<<MEMCPY_DMA_CH));
-+	}
-+
-+	spin_unlock_bh(&rt_chan->lock);
-+
-+	return &rt_chan->txd;
-+}
-+
-+/**
-+ * rt2880_dma_status - poll the status of an XOR transaction
-+ * @chan: XOR channel handle
-+ * @cookie: XOR transaction identifier
-+ * @txstate: XOR transactions state holder (or NULL)
-+ */
-+static enum dma_status rt2880_dma_status(struct dma_chan *chan,
-+					  dma_cookie_t cookie,
-+					  struct dma_tx_state *txstate)
-+{
-+	return 0;
-+}
-+
-+static irqreturn_t rt2880_dma_interrupt_handler(int irq, void *data)
-+{
-+
-+	printk("%s\n",__FUNCTION__);
-+
-+	return IRQ_HANDLED;
-+}
-+
-+static void rt2880_dma_issue_pending(struct dma_chan *chan)
-+{
-+}
-+
-+static int rt2880_dma_alloc_chan_resources(struct dma_chan *chan)
-+{
-+//	printk("%s\n",__FUNCTION__);
-+
-+	return 0;
-+}
-+
-+static void rt2880_dma_free_chan_resources(struct dma_chan *chan)
-+{
-+//	printk("%s\n",__FUNCTION__);
-+
-+}
-+
-+static int rt2880_dma_control(struct dma_chan *chan, enum dma_ctrl_cmd cmd, unsigned long arg)
-+{
-+	switch (cmd) {
-+	case DMA_TERMINATE_ALL:
-+		printk("%s:%s[%d]\n", __FILE__, __func__, __LINE__);
-+		break;
-+	case DMA_SLAVE_CONFIG:
-+		printk("%s:%s[%d]\n", __FILE__, __func__, __LINE__);
-+		break;
-+	default:
-+		return -ENXIO;
-+	}
-+
-+	return 0;
-+}
-+
-+static int rt2880_dma_probe(struct platform_device *pdev)
-+{
-+	struct resource *res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
-+	__iomem void *membase;
-+	struct dma_device *dma_dev;
-+	struct rt2880_dma_chan *rt_chan;
-+	int err;
-+	int ret;
-+	int reg;
-+	int irq;
-+
-+	membase = devm_request_and_ioremap(&pdev->dev, res);
-+	if (IS_ERR(membase))
-+		return PTR_ERR(membase);
-+
-+	dma_dev = devm_kzalloc(&pdev->dev, sizeof(*dma_dev), GFP_KERNEL);
-+	if (!dma_dev)
-+		return -ENOMEM;
-+
-+	irq = platform_get_irq(pdev, 0);
-+	if (!irq) {
-+		dev_err(&pdev->dev, "failed to load irq\n");
-+		return -ENOENT;
-+	}
-+
-+
-+	INIT_LIST_HEAD(&dma_dev->channels);
-+	dma_cap_zero(dma_dev->cap_mask);
-+	dma_cap_set(DMA_MEMCPY, dma_dev->cap_mask);
-+	dma_cap_set(DMA_SLAVE, dma_dev->cap_mask);
-+	dma_dev->device_alloc_chan_resources = rt2880_dma_alloc_chan_resources;
-+	dma_dev->device_free_chan_resources = rt2880_dma_free_chan_resources;
-+	dma_dev->device_tx_status = rt2880_dma_status;
-+	dma_dev->device_issue_pending = rt2880_dma_issue_pending;
-+	dma_dev->device_prep_dma_memcpy = rt2880_dma_prep_dma_memcpy;
-+	dma_dev->device_control = rt2880_dma_control;
-+	dma_dev->dev = &pdev->dev;
-+
-+	rt_chan = devm_kzalloc(&pdev->dev, sizeof(*rt_chan), GFP_KERNEL);
-+        if (!rt_chan) {
-+		return -ENOMEM;
-+	}
-+
-+	spin_lock_init(&rt_chan->lock);
-+        INIT_LIST_HEAD(&rt_chan->chain);
-+	INIT_LIST_HEAD(&rt_chan->completed_slots);
-+	INIT_LIST_HEAD(&rt_chan->all_slots);
-+	rt_chan->common.device = dma_dev;
-+	rt_chan->txd.tx_submit = rt2880_dma_tx_submit;
-+
-+	list_add_tail(&rt_chan->common.device_node, &dma_dev->channels);
-+
-+	err = dma_async_device_register(dma_dev);
-+	if (0 != err) {
-+		pr_err("ERR_MDMA:device_register failed: %d\n", err);
-+		return 1;
-+	}
-+
-+	ret = request_irq(irq, rt2880_dma_interrupt_handler, 0, dev_name(&pdev->dev), NULL);
-+	if(ret){
-+		pr_err("IRQ %d is not free.\n", SURFBOARDINT_DMA);
-+		return 1;
-+	}
-+
-+	//set GDMA register in advance.
-+	reg = (32 << 16) | (32 << 8) | (MEMCPY_DMA_CH << 3);
-+	RT_DMA_WRITE_REG(RT_DMA_CTRL_REG1(MEMCPY_DMA_CH), reg);
-+
-+	dev_info(&pdev->dev, "running\n");
-+
-+	return 0;
-+}
-+
-+static int rt2880_dma_remove(struct platform_device *dev)
-+{
-+	struct dma_device *dma_dev = platform_get_drvdata(dev);
-+
-+	printk("%s\n",__FUNCTION__);
-+
-+	dma_async_device_unregister(dma_dev);
-+
-+	return 0;
-+}
-+
-+static const struct of_device_id rt2880_dma_match[] = {
-+	{ .compatible = "ralink,rt2880-gdma" },
-+	{},
-+};
-+MODULE_DEVICE_TABLE(of, rt2880_wdt_match);
-+
-+static struct platform_driver rt2880_dma_driver = {
-+	.probe		= rt2880_dma_probe,
-+	.remove		= rt2880_dma_remove,
-+	.driver		= {
-+		.owner	= THIS_MODULE,
-+		.name	= RT_DMA_NAME,
-+		.of_match_table = rt2880_dma_match,
-+	},
-+};
-+
-+static int __init rt2880_dma_init(void)
-+{
-+	int rc;
-+
-+	rc = platform_driver_register(&rt2880_dma_driver);
-+	return rc;
-+}
-+module_init(rt2880_dma_init);
-+
-+MODULE_AUTHOR("Steven Liu <steven_liu@mediatek.com>");
-+MODULE_AUTHOR("John Crispin <blogic@openwrt.org>");
-+MODULE_DESCRIPTION("DMA engine driver for Ralink DMA engine");
-+MODULE_LICENSE("GPL");
-diff --git a/drivers/dma/ralink_gdma.h b/drivers/dma/ralink_gdma.h
-new file mode 100644
-index 0000000..73e1948
---- /dev/null
-+++ b/drivers/dma/ralink_gdma.h
-@@ -0,0 +1,55 @@
-+/*
-+ * Copyright (C) 2007, 2008, Marvell International Ltd.
-+ *
-+ * This program is free software; you can redistribute it and/or modify
-+ * it under the terms and conditions of the GNU General Public License,
-+ * version 2, as published by the Free Software Foundation.
-+ *
-+ * This program is distributed in the hope 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.
-+ *
-+ * You should have received a copy of the GNU General Public License
-+ * along with this program; if not, write to the Free Software Foundation,
-+ * Inc., 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
-+ */
-+
-+#ifndef RT_DMA_H
-+#define RT_DMA_H
-+
-+#include <linux/types.h>
-+#include <linux/io.h>
-+#include <linux/dmaengine.h>
-+#include <linux/interrupt.h>
-+
-+#define RT_DMA_NAME		"rt2880_dma"
-+
-+#define RALINK_GDMA_BASE	0xB0002800
-+
-+struct rt2880_dma_chan {
-+        int                     pending;
-+        dma_cookie_t            completed_cookie;
-+        spinlock_t              lock; /* protects the descriptor slot pool */
-+        void __iomem            *mmr_base;
-+        unsigned int            idx;
-+        enum dma_transaction_type       current_type;
-+	struct dma_async_tx_descriptor txd;
-+        struct list_head        chain;
-+        struct list_head        completed_slots;
-+        struct dma_chan         common;
-+        struct list_head        all_slots;
-+        int                     slots_allocated;
-+        struct tasklet_struct   irq_tasklet;
-+};
-+
-+#define RT_DMA_READ_REG(addr)             le32_to_cpu(*(volatile u32 *)(addr))
-+#define RT_DMA_WRITE_REG(addr, val)       *((volatile uint32_t *)(addr)) = cpu_to_le32(val)
-+
-+#define RT_DMA_SRC_REG(ch)                (RALINK_GDMA_BASE + ch*16)
-+#define RT_DMA_DST_REG(ch)                (RT_DMA_SRC_REG(ch) + 4)
-+#define RT_DMA_CTRL_REG(ch)               (RT_DMA_DST_REG(ch) + 4)
-+#define RT_DMA_CTRL_REG1(ch)              (RT_DMA_CTRL_REG(ch) + 4)
-+#define RT_DMA_DONEINT			  (RALINK_GDMA_BASE + 0x204)
-+
-+#endif
--- 
-1.7.10.4
-