brcm2708: update to latest version

As usual these patches were extracted from the raspberry pi repo:
https://github.com/raspberrypi/linux/commits/rpi-4.4.y

Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com>

1 files changed, 0 insertions, 358 deletions

diff --git a/target/linux/brcm2708/patches-4.4/0042-Add-SMI-NAND-driver.patch b/target/linux/brcm2708/patches-4.4/0042-Add-SMI-NAND-driver.patch
deleted file mode 100644
index edf2c93..0000000
--- a/target/linux/brcm2708/patches-4.4/0042-Add-SMI-NAND-driver.patch
+++ /dev/null
@@ -1,358 +0,0 @@
-From f4d44b2c447c401791645627e88d0ef9830c1239 Mon Sep 17 00:00:00 2001
-From: Luke Wren <wren6991@gmail.com>
-Date: Sat, 5 Sep 2015 01:16:10 +0100
-Subject: [PATCH 042/170] Add SMI NAND driver
-
-Signed-off-by: Luke Wren <wren6991@gmail.com>
----
- .../bindings/mtd/brcm,bcm2835-smi-nand.txt         |  42 ++++
- drivers/mtd/nand/Kconfig                           |   7 +
- drivers/mtd/nand/Makefile                          |   1 +
- drivers/mtd/nand/bcm2835_smi_nand.c                | 268 +++++++++++++++++++++
- 4 files changed, 318 insertions(+)
- create mode 100644 Documentation/devicetree/bindings/mtd/brcm,bcm2835-smi-nand.txt
- create mode 100644 drivers/mtd/nand/bcm2835_smi_nand.c
-
---- /dev/null
-+++ b/Documentation/devicetree/bindings/mtd/brcm,bcm2835-smi-nand.txt
-@@ -0,0 +1,42 @@
-+* BCM2835 SMI NAND flash
-+
-+This driver is a shim between the BCM2835 SMI driver (SMI is a peripheral for
-+talking to parallel register interfaces) and Linux's MTD layer.
-+
-+Required properties:
-+- compatible: "brcm,bcm2835-smi-nand"
-+- status: "okay"
-+
-+Optional properties:
-+- partition@n, where n is an integer from a consecutive sequence starting at 0
-+	- Difficult to store partition table on NAND device - normally put it
-+	in the source code, kernel bootparams, or device tree (the best way!)
-+	- Sub-properties:
-+		- label: the partition name, as shown by mtdinfo /dev/mtd*
-+		- reg: the size and offset of this partition.
-+		- (optional) read-only: an empty property flagging as read only
-+
-+Example:
-+
-+nand: flash@0 {
-+	compatible = "brcm,bcm2835-smi-nand";
-+	status = "okay";
-+
-+	partition@0 {
-+		label = "stage2";
-+		// 128k
-+		reg = <0 0x20000>;
-+		read-only;
-+	};
-+	partition@1 {
-+		label = "firmware";
-+		// 16M
-+		reg = <0x20000 0x1000000>;
-+		read-only;
-+	};
-+	partition@2 {
-+		label = "root";
-+		// 2G
-+		reg = <0x1020000 0x80000000>;
-+	};
-+};
-\ No newline at end of file
---- a/drivers/mtd/nand/Kconfig
-+++ b/drivers/mtd/nand/Kconfig
-@@ -41,6 +41,13 @@ config MTD_SM_COMMON
- 	tristate
- 	default n
- 
-+config MTD_NAND_BCM2835_SMI
-+        tristate "Use Broadcom's Secondary Memory Interface as a NAND controller (BCM283x)"
-+        depends on (MACH_BCM2708 || MACH_BCM2709 || ARCH_BCM2835) && BCM2835_SMI && MTD_NAND
-+        default m
-+        help
-+	  Uses the BCM2835's SMI peripheral as a NAND controller.
-+
- config MTD_NAND_DENALI
- 	tristate
- 
---- a/drivers/mtd/nand/Makefile
-+++ b/drivers/mtd/nand/Makefile
-@@ -14,6 +14,7 @@ obj-$(CONFIG_MTD_NAND_DENALI)		+= denali
- obj-$(CONFIG_MTD_NAND_DENALI_PCI)	+= denali_pci.o
- obj-$(CONFIG_MTD_NAND_DENALI_DT)	+= denali_dt.o
- obj-$(CONFIG_MTD_NAND_AU1550)		+= au1550nd.o
-+obj-$(CONFIG_MTD_NAND_BCM2835_SMI)	+= bcm2835_smi_nand.o
- obj-$(CONFIG_MTD_NAND_BF5XX)		+= bf5xx_nand.o
- obj-$(CONFIG_MTD_NAND_S3C2410)		+= s3c2410.o
- obj-$(CONFIG_MTD_NAND_DAVINCI)		+= davinci_nand.o
---- /dev/null
-+++ b/drivers/mtd/nand/bcm2835_smi_nand.c
-@@ -0,0 +1,268 @@
-+/**
-+ * NAND flash driver for Broadcom Secondary Memory Interface
-+ *
-+ * Written by Luke Wren <luke@raspberrypi.org>
-+ * Copyright (c) 2015, Raspberry Pi (Trading) Ltd.
-+ *
-+ * Redistribution and use in source and binary forms, with or without
-+ * modification, are permitted provided that the following conditions
-+ * are met:
-+ * 1. Redistributions of source code must retain the above copyright
-+ *    notice, this list of conditions, and the following disclaimer,
-+ *    without modification.
-+ * 2. Redistributions in binary form must reproduce the above copyright
-+ *    notice, this list of conditions and the following disclaimer in the
-+ *    documentation and/or other materials provided with the distribution.
-+ * 3. The names of the above-listed copyright holders may not be used
-+ *    to endorse or promote products derived from this software without
-+ *    specific prior written permission.
-+ *
-+ * ALTERNATIVELY, this software may be distributed under the terms of the
-+ * GNU General Public License ("GPL") version 2, as published by the Free
-+ * Software Foundation.
-+ *
-+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
-+ * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
-+ * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
-+ * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
-+ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
-+ * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
-+ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
-+ * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
-+ * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
-+ * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
-+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-+ */
-+
-+#include <linux/kernel.h>
-+#include <linux/module.h>
-+#include <linux/of.h>
-+#include <linux/platform_device.h>
-+#include <linux/slab.h>
-+#include <linux/mtd/nand.h>
-+#include <linux/mtd/partitions.h>
-+
-+#include <linux/broadcom/bcm2835_smi.h>
-+
-+#define DEVICE_NAME "bcm2835-smi-nand"
-+#define DRIVER_NAME "smi-nand-bcm2835"
-+
-+struct bcm2835_smi_nand_host {
-+	struct bcm2835_smi_instance *smi_inst;
-+	struct nand_chip nand_chip;
-+	struct mtd_info mtd;
-+	struct device *dev;
-+};
-+
-+/****************************************************************************
-+*
-+*   NAND functionality implementation
-+*
-+****************************************************************************/
-+
-+#define SMI_NAND_CLE_PIN 0x01
-+#define SMI_NAND_ALE_PIN 0x02
-+
-+static inline void bcm2835_smi_nand_cmd_ctrl(struct mtd_info *mtd, int cmd,
-+					     unsigned int ctrl)
-+{
-+	uint32_t cmd32 = cmd;
-+	uint32_t addr = ~(SMI_NAND_CLE_PIN | SMI_NAND_ALE_PIN);
-+	struct bcm2835_smi_nand_host *host = dev_get_drvdata(mtd->dev.parent);
-+	struct bcm2835_smi_instance *inst = host->smi_inst;
-+
-+	if (ctrl & NAND_CLE)
-+		addr |= SMI_NAND_CLE_PIN;
-+	if (ctrl & NAND_ALE)
-+		addr |= SMI_NAND_ALE_PIN;
-+	/* Lower ALL the CS pins! */
-+	if (ctrl & NAND_NCE)
-+		addr &= (SMI_NAND_CLE_PIN | SMI_NAND_ALE_PIN);
-+
-+	bcm2835_smi_set_address(inst, addr);
-+
-+	if (cmd != NAND_CMD_NONE)
-+		bcm2835_smi_write_buf(inst, &cmd32, 1);
-+}
-+
-+static inline uint8_t bcm2835_smi_nand_read_byte(struct mtd_info *mtd)
-+{
-+	uint8_t byte;
-+	struct bcm2835_smi_nand_host *host = dev_get_drvdata(mtd->dev.parent);
-+	struct bcm2835_smi_instance *inst = host->smi_inst;
-+
-+	bcm2835_smi_read_buf(inst, &byte, 1);
-+	return byte;
-+}
-+
-+static inline void bcm2835_smi_nand_write_byte(struct mtd_info *mtd,
-+					       uint8_t byte)
-+{
-+	struct bcm2835_smi_nand_host *host = dev_get_drvdata(mtd->dev.parent);
-+	struct bcm2835_smi_instance *inst = host->smi_inst;
-+
-+	bcm2835_smi_write_buf(inst, &byte, 1);
-+}
-+
-+static inline void bcm2835_smi_nand_write_buf(struct mtd_info *mtd,
-+					      const uint8_t *buf, int len)
-+{
-+	struct bcm2835_smi_nand_host *host = dev_get_drvdata(mtd->dev.parent);
-+	struct bcm2835_smi_instance *inst = host->smi_inst;
-+
-+	bcm2835_smi_write_buf(inst, buf, len);
-+}
-+
-+static inline void bcm2835_smi_nand_read_buf(struct mtd_info *mtd,
-+					     uint8_t *buf, int len)
-+{
-+	struct bcm2835_smi_nand_host *host = dev_get_drvdata(mtd->dev.parent);
-+	struct bcm2835_smi_instance *inst = host->smi_inst;
-+
-+	bcm2835_smi_read_buf(inst, buf, len);
-+}
-+
-+/****************************************************************************
-+*
-+*   Probe and remove functions
-+*
-+***************************************************************************/
-+
-+static int bcm2835_smi_nand_probe(struct platform_device *pdev)
-+{
-+	struct bcm2835_smi_nand_host *host;
-+	struct nand_chip *this;
-+	struct mtd_info *mtd;
-+	struct device *dev = &pdev->dev;
-+	struct device_node *node = dev->of_node, *smi_node;
-+	struct mtd_part_parser_data ppdata;
-+	struct smi_settings *smi_settings;
-+	struct bcm2835_smi_instance *smi_inst;
-+	int ret = -ENXIO;
-+
-+	if (!node) {
-+		dev_err(dev, "No device tree node supplied!");
-+		return -EINVAL;
-+	}
-+
-+	smi_node = of_parse_phandle(node, "smi_handle", 0);
-+
-+	/* Request use of SMI peripheral: */
-+	smi_inst = bcm2835_smi_get(smi_node);
-+
-+	if (!smi_inst) {
-+		dev_err(dev, "Could not register with SMI.");
-+		return -EPROBE_DEFER;
-+	}
-+
-+	/* Set SMI timing and bus width */
-+
-+	smi_settings = bcm2835_smi_get_settings_from_regs(smi_inst);
-+
-+	smi_settings->data_width = SMI_WIDTH_8BIT;
-+	smi_settings->read_setup_time = 2;
-+	smi_settings->read_hold_time = 1;
-+	smi_settings->read_pace_time = 1;
-+	smi_settings->read_strobe_time = 3;
-+
-+	smi_settings->write_setup_time = 2;
-+	smi_settings->write_hold_time = 1;
-+	smi_settings->write_pace_time = 1;
-+	smi_settings->write_strobe_time = 3;
-+
-+	bcm2835_smi_set_regs_from_settings(smi_inst);
-+
-+	host = devm_kzalloc(dev, sizeof(struct bcm2835_smi_nand_host),
-+		GFP_KERNEL);
-+	if (!host)
-+		return -ENOMEM;
-+
-+	host->dev = dev;
-+	host->smi_inst = smi_inst;
-+
-+	platform_set_drvdata(pdev, host);
-+
-+	/* Link the structures together */
-+
-+	this = &host->nand_chip;
-+	mtd = &host->mtd;
-+	mtd->priv = this;
-+	mtd->owner = THIS_MODULE;
-+	mtd->dev.parent = dev;
-+	mtd->name = DRIVER_NAME;
-+	ppdata.of_node = node;
-+
-+	/* 20 us command delay time... */
-+	this->chip_delay = 20;
-+
-+	this->priv = host;
-+	this->cmd_ctrl = bcm2835_smi_nand_cmd_ctrl;
-+	this->read_byte = bcm2835_smi_nand_read_byte;
-+	this->write_byte = bcm2835_smi_nand_write_byte;
-+	this->write_buf = bcm2835_smi_nand_write_buf;
-+	this->read_buf = bcm2835_smi_nand_read_buf;
-+
-+	this->ecc.mode = NAND_ECC_SOFT;
-+
-+	/* Should never be accessed directly: */
-+
-+	this->IO_ADDR_R = (void *)0xdeadbeef;
-+	this->IO_ADDR_W = (void *)0xdeadbeef;
-+
-+	/* First scan to find the device and get the page size */
-+
-+	if (nand_scan_ident(mtd, 1, NULL))
-+		return -ENXIO;
-+
-+	/* Second phase scan */
-+
-+	if (nand_scan_tail(mtd))
-+		return -ENXIO;
-+
-+	ret = mtd_device_parse_register(mtd, NULL, &ppdata, NULL, 0);
-+	if (!ret)
-+		return 0;
-+
-+	nand_release(mtd);
-+	return -EINVAL;
-+}
-+
-+static int bcm2835_smi_nand_remove(struct platform_device *pdev)
-+{
-+	struct bcm2835_smi_nand_host *host = platform_get_drvdata(pdev);
-+
-+	nand_release(&host->mtd);
-+
-+	return 0;
-+}
-+
-+/****************************************************************************
-+*
-+*   Register the driver with device tree
-+*
-+***************************************************************************/
-+
-+static const struct of_device_id bcm2835_smi_nand_of_match[] = {
-+	{.compatible = "brcm,bcm2835-smi-nand",},
-+	{ /* sentinel */ }
-+};
-+
-+MODULE_DEVICE_TABLE(of, bcm2835_smi_nand_of_match);
-+
-+static struct platform_driver bcm2835_smi_nand_driver = {
-+	.probe = bcm2835_smi_nand_probe,
-+	.remove = bcm2835_smi_nand_remove,
-+	.driver = {
-+		.name = DRIVER_NAME,
-+		.owner = THIS_MODULE,
-+		.of_match_table = bcm2835_smi_nand_of_match,
-+	},
-+};
-+
-+module_platform_driver(bcm2835_smi_nand_driver);
-+
-+MODULE_ALIAS("platform:smi-nand-bcm2835");
-+MODULE_LICENSE("GPL");
-+MODULE_DESCRIPTION
-+	("Driver for NAND chips using Broadcom Secondary Memory Interface");
-+MODULE_AUTHOR("Luke Wren <luke@raspberrypi.org>");