update 3.2 patches

sync with lantiq kernel series

SVN-Revision: 31260

1 files changed, 310 insertions, 0 deletions

diff --git a/target/linux/lantiq/patches-3.2/0040-MIPS-lantiq-add-xway-nand-driver.patch b/target/linux/lantiq/patches-3.2/0040-MIPS-lantiq-add-xway-nand-driver.patch
new file mode 100644
index 0000000000..c28f2ab312
--- /dev/null
+++ b/target/linux/lantiq/patches-3.2/0040-MIPS-lantiq-add-xway-nand-driver.patch
@@ -0,0 +1,310 @@
+From e125a83872c5b400852efbd451786c42bd395f11 Mon Sep 17 00:00:00 2001
+From: John Crispin <blogic@openwrt.org>
+Date: Sat, 27 Aug 2011 20:08:14 +0200
+Subject: [PATCH 40/73] MIPS: lantiq: add xway nand driver
+
+This patch adds a nand driver for XWAY SoCs. The patch makes use of the
+plat_nand driver. As with the EBU NOR driver merged in 3.0, we have the
+endianess swap problem on read. To workaround this problem we make the
+read_byte() callback available via the plat_nand driver causing the nand
+layer to do byte reads.
+
+Signed-off-by: John Crispin <blogic@openwrt.org>
+
+TODO : memory ranges
+       cs lines
+       plat dev
+       ebu2 and not ebu1 ?
+---
+ .../mips/include/asm/mach-lantiq/xway/lantiq_soc.h |    2 +
+ arch/mips/lantiq/xway/Makefile                     |    2 +-
+ arch/mips/lantiq/xway/devices.h                    |    1 +
+ arch/mips/lantiq/xway/nand.c                       |  216 ++++++++++++++++++++
+ drivers/mtd/nand/plat_nand.c                       |    1 +
+ include/linux/mtd/nand.h                           |    1 +
+ 6 files changed, 222 insertions(+), 1 deletions(-)
+ create mode 100644 arch/mips/lantiq/xway/nand.c
+
+diff --git a/arch/mips/include/asm/mach-lantiq/xway/lantiq_soc.h b/arch/mips/include/asm/mach-lantiq/xway/lantiq_soc.h
+index 3f22acb..ab2d236 100644
+--- a/arch/mips/include/asm/mach-lantiq/xway/lantiq_soc.h
++++ b/arch/mips/include/asm/mach-lantiq/xway/lantiq_soc.h
+@@ -145,6 +145,8 @@
+ /* register access macros for EBU and CGU */
+ #define ltq_ebu_w32(x, y)	ltq_w32((x), ltq_ebu_membase + (y))
+ #define ltq_ebu_r32(x)		ltq_r32(ltq_ebu_membase + (x))
++#define ltq_ebu_w32_mask(x, y, z) \
++	ltq_w32_mask(x, y, ltq_ebu_membase + (z))
+ #define ltq_cgu_w32(x, y)	ltq_w32((x), ltq_cgu_membase + (y))
+ #define ltq_cgu_r32(x)		ltq_r32(ltq_cgu_membase + (x))
+ 
+diff --git a/arch/mips/lantiq/xway/Makefile b/arch/mips/lantiq/xway/Makefile
+index 9d1a0a2..277aa34 100644
+--- a/arch/mips/lantiq/xway/Makefile
++++ b/arch/mips/lantiq/xway/Makefile
+@@ -1,4 +1,4 @@
+-obj-y := sysctrl.o reset.o gpio.o gpio_stp.o gpio_ebu.o devices.o dma.o clk.o prom.o
++obj-y := sysctrl.o reset.o gpio.o gpio_stp.o gpio_ebu.o devices.o dma.o clk.o prom.o nand.o
+ 
+ obj-$(CONFIG_LANTIQ_MACH_EASY50712) += mach-easy50712.o
+ obj-$(CONFIG_LANTIQ_MACH_EASY50601) += mach-easy50601.o
+diff --git a/arch/mips/lantiq/xway/devices.h b/arch/mips/lantiq/xway/devices.h
+index e904934..d825cbd 100644
+--- a/arch/mips/lantiq/xway/devices.h
++++ b/arch/mips/lantiq/xway/devices.h
+@@ -16,5 +16,6 @@ extern void ltq_register_gpio(void);
+ extern void ltq_register_gpio_stp(void);
+ extern void ltq_register_ase_asc(void);
+ extern void ltq_register_etop(struct ltq_eth_data *eth);
++extern void xway_register_nand(struct mtd_partition *parts, int count);
+ 
+ #endif
+diff --git a/arch/mips/lantiq/xway/nand.c b/arch/mips/lantiq/xway/nand.c
+new file mode 100644
+index 0000000..9ab91d8
+--- /dev/null
++++ b/arch/mips/lantiq/xway/nand.c
+@@ -0,0 +1,216 @@
++/*
++ *  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) 2010 John Crispin <blogic@openwrt.org>
++ */
++
++#include <linux/mtd/physmap.h>
++#include <linux/mtd/nand.h>
++#include <linux/platform_device.h>
++#include <linux/io.h>
++
++#include <lantiq_soc.h>
++#include <lantiq_irq.h>
++#include <lantiq_platform.h>
++
++#include "devices.h"
++
++/* nand registers */
++#define LTQ_EBU_NAND_WAIT	0xB4
++#define LTQ_EBU_NAND_ECC0	0xB8
++#define LTQ_EBU_NAND_ECC_AC	0xBC
++#define LTQ_EBU_NAND_CON	0xB0
++#define LTQ_EBU_ADDSEL1		0x24
++
++/* gpio definitions */
++#define PIN_ALE			13
++#define PIN_CLE			24
++#define PIN_CS1			23
++#define PIN_RDY			48  /* NFLASH_READY */
++#define PIN_RD			49  /* NFLASH_READ_N */
++
++#define NAND_CMD_ALE		(1 << 2)
++#define NAND_CMD_CLE		(1 << 3)
++#define NAND_CMD_CS		(1 << 4)
++#define NAND_WRITE_CMD_RESET	0xff
++#define NAND_WRITE_CMD		(NAND_CMD_CS | NAND_CMD_CLE)
++#define NAND_WRITE_ADDR		(NAND_CMD_CS | NAND_CMD_ALE)
++#define NAND_WRITE_DATA		(NAND_CMD_CS)
++#define NAND_READ_DATA		(NAND_CMD_CS)
++#define NAND_WAIT_WR_C		(1 << 3)
++#define NAND_WAIT_RD		(0x1)
++
++#define ADDSEL1_MASK(x)		(x << 4)
++#define ADDSEL1_REGEN		1
++#define BUSCON1_SETUP		(1 << 22)
++#define BUSCON1_BCGEN_RES	(0x3 << 12)
++#define BUSCON1_WAITWRC2	(2 << 8)
++#define BUSCON1_WAITRDC2	(2 << 6)
++#define BUSCON1_HOLDC1		(1 << 4)
++#define BUSCON1_RECOVC1		(1 << 2)
++#define BUSCON1_CMULT4		1
++#define NAND_CON_NANDM		1
++#define NAND_CON_CSMUX		(1 << 1)
++#define NAND_CON_CS_P		(1 << 4)
++#define NAND_CON_SE_P		(1 << 5)
++#define NAND_CON_WP_P		(1 << 6)
++#define NAND_CON_PRE_P		(1 << 7)
++#define NAND_CON_IN_CS0		0
++#define NAND_CON_OUT_CS0	0
++#define NAND_CON_IN_CS1		(1 << 8)
++#define NAND_CON_OUT_CS1	(1 << 10)
++#define NAND_CON_CE		(1 << 20)
++
++#define NAND_BASE_ADDRESS	(KSEG1 | 0x14000000)
++
++static const char *part_probes[] = { "cmdlinepart", NULL };
++
++static void xway_select_chip(struct mtd_info *mtd, int chip)
++{
++	switch (chip) {
++	case -1:
++		ltq_ebu_w32_mask(NAND_CON_CE, 0, LTQ_EBU_NAND_CON);
++		ltq_ebu_w32_mask(NAND_CON_NANDM, 0, LTQ_EBU_NAND_CON);
++		break;
++	case 0:
++		ltq_ebu_w32_mask(0, NAND_CON_NANDM, LTQ_EBU_NAND_CON);
++		ltq_ebu_w32_mask(0, NAND_CON_CE, LTQ_EBU_NAND_CON);
++		/* reset the nand chip */
++		while ((ltq_ebu_r32(LTQ_EBU_NAND_WAIT) & NAND_WAIT_WR_C) == 0)
++			;
++		ltq_w32(NAND_WRITE_CMD_RESET,
++			((u32 *) (NAND_BASE_ADDRESS | NAND_WRITE_CMD)));
++		break;
++	default:
++		BUG();
++	}
++}
++
++static void xway_cmd_ctrl(struct mtd_info *mtd, int data, unsigned int ctrl)
++{
++	struct nand_chip *this = mtd->priv;
++
++	if (ctrl & NAND_CTRL_CHANGE) {
++		if (ctrl & NAND_CLE)
++			this->IO_ADDR_W = (void __iomem *)
++					(NAND_BASE_ADDRESS | NAND_WRITE_CMD);
++		else if (ctrl & NAND_ALE)
++			this->IO_ADDR_W = (void __iomem *)
++					(NAND_BASE_ADDRESS | NAND_WRITE_ADDR);
++	}
++
++	if (data != NAND_CMD_NONE) {
++		*(volatile u8*) ((u32) this->IO_ADDR_W) = data;
++		while ((ltq_ebu_r32(LTQ_EBU_NAND_WAIT) & NAND_WAIT_WR_C) == 0)
++			;
++	}
++}
++
++static int xway_dev_ready(struct mtd_info *mtd)
++{
++	return ltq_ebu_r32(LTQ_EBU_NAND_WAIT) & NAND_WAIT_RD;
++}
++
++void nand_write(unsigned int addr, unsigned int val)
++{
++	ltq_w32(val, ((u32 *) (NAND_BASE_ADDRESS | addr)));
++	while ((ltq_ebu_r32(LTQ_EBU_NAND_WAIT) & NAND_WAIT_WR_C) == 0)
++		;
++}
++
++unsigned char xway_read_byte(struct mtd_info *mtd)
++{
++	return ltq_r8((void __iomem *)(NAND_BASE_ADDRESS | (NAND_READ_DATA)));
++}
++
++static void xway_read_buf(struct mtd_info *mtd, uint8_t *buf, int len)
++{
++	int i;
++
++	for (i = 0; i < len; i++)
++	{
++		unsigned char res8 =  ltq_r8((void __iomem *)(NAND_BASE_ADDRESS | (NAND_READ_DATA)));
++		buf[i] = res8;
++	}
++}
++
++static void xway_write_buf(struct mtd_info *mtd, const uint8_t *buf, int len)
++{
++	int i;
++
++	for (i = 0; i < len; i++)
++	{
++		ltq_w8(buf[i], ((u32*)(NAND_BASE_ADDRESS | (NAND_WRITE_DATA))));
++		while((ltq_ebu_r32(LTQ_EBU_NAND_WAIT) & NAND_WAIT_WR_C) == 0);
++	}
++}
++
++int xway_probe(struct platform_device *pdev)
++{
++	/* might need this later ?
++	ltq_gpio_request(PIN_CS1, 2, 1, "NAND_CS1");
++	*/
++	ltq_gpio_request(&pdev->dev, PIN_CLE, 2, 1, "NAND_CLE");
++	ltq_gpio_request(&pdev->dev, PIN_ALE, 2, 1, "NAND_ALE");
++	if (ltq_is_ar9() || ltq_is_vr9()) {
++		ltq_gpio_request(&pdev->dev, PIN_RDY, 2, 0, "NAND_BSY");
++		ltq_gpio_request(&pdev->dev, PIN_RD, 2, 1, "NAND_RD");
++	}
++
++	ltq_ebu_w32((NAND_BASE_ADDRESS & 0x1fffff00)
++		| ADDSEL1_MASK(3) | ADDSEL1_REGEN, LTQ_EBU_ADDSEL1);
++
++	ltq_ebu_w32(BUSCON1_SETUP | BUSCON1_BCGEN_RES | BUSCON1_WAITWRC2
++		| BUSCON1_WAITRDC2 | BUSCON1_HOLDC1 | BUSCON1_RECOVC1
++		| BUSCON1_CMULT4, LTQ_EBU_BUSCON1);
++
++	ltq_ebu_w32(NAND_CON_NANDM | NAND_CON_CSMUX | NAND_CON_CS_P
++		| NAND_CON_SE_P | NAND_CON_WP_P | NAND_CON_PRE_P
++		| NAND_CON_IN_CS0 | NAND_CON_OUT_CS0, LTQ_EBU_NAND_CON);
++
++	ltq_w32(NAND_WRITE_CMD_RESET,
++		((u32 *) (NAND_BASE_ADDRESS | NAND_WRITE_CMD)));
++	while ((ltq_ebu_r32(LTQ_EBU_NAND_WAIT) & NAND_WAIT_WR_C) == 0)
++		;
++
++	return 0;
++}
++
++static struct platform_nand_data falcon_flash_nand_data = {
++	.chip = {
++		.nr_chips		= 1,
++		.chip_delay		= 30,
++		.part_probe_types	= part_probes,
++	},
++	.ctrl = {
++		.probe		= xway_probe,
++		.cmd_ctrl	= xway_cmd_ctrl,
++		.dev_ready	= xway_dev_ready,
++		.select_chip	= xway_select_chip,
++		.read_byte	= xway_read_byte,
++		.read_buf	= xway_read_buf,
++		.write_buf	= xway_write_buf,
++	}
++};
++
++static struct resource ltq_nand_res =
++	MEM_RES("nand", 0x14000000, 0x7ffffff);
++
++static struct platform_device ltq_flash_nand = {
++	.name		= "gen_nand",
++	.id		= -1,
++	.num_resources	= 1,
++	.resource	= &ltq_nand_res,
++	.dev		= {
++		.platform_data = &falcon_flash_nand_data,
++	},
++};
++
++void __init xway_register_nand(struct mtd_partition *parts, int count)
++{
++	falcon_flash_nand_data.chip.partitions = parts;
++	falcon_flash_nand_data.chip.nr_partitions = count;
++	platform_device_register(&ltq_flash_nand);
++}
+diff --git a/drivers/mtd/nand/plat_nand.c b/drivers/mtd/nand/plat_nand.c
+index ea8e123..9040ba1 100644
+--- a/drivers/mtd/nand/plat_nand.c
++++ b/drivers/mtd/nand/plat_nand.c
+@@ -75,6 +75,7 @@ static int __devinit plat_nand_probe(struct platform_device *pdev)
+ 	data->chip.select_chip = pdata->ctrl.select_chip;
+ 	data->chip.write_buf = pdata->ctrl.write_buf;
+ 	data->chip.read_buf = pdata->ctrl.read_buf;
++	data->chip.read_byte = pdata->ctrl.read_byte;
+ 	data->chip.chip_delay = pdata->chip.chip_delay;
+ 	data->chip.options |= pdata->chip.options;
+ 	data->chip.bbt_options |= pdata->chip.bbt_options;
+diff --git a/include/linux/mtd/nand.h b/include/linux/mtd/nand.h
+index 904131b..80e11b9 100644
+--- a/include/linux/mtd/nand.h
++++ b/include/linux/mtd/nand.h
+@@ -650,6 +650,7 @@ struct platform_nand_ctrl {
+ 	void (*cmd_ctrl)(struct mtd_info *mtd, int dat, unsigned int ctrl);
+ 	void (*write_buf)(struct mtd_info *mtd, const uint8_t *buf, int len);
+ 	void (*read_buf)(struct mtd_info *mtd, uint8_t *buf, int len);
++	unsigned char (*read_byte)(struct mtd_info *mtd);
+ 	void *priv;
+ };
+ 
+-- 
+1.7.9.1
+