update 3.2 patches

sync with lantiq kernel series

SVN-Revision: 31260

1 files changed, 195 insertions, 0 deletions

diff --git a/target/linux/lantiq/patches-3.2/0050-MIPS-adds-gptu-driver.patch b/target/linux/lantiq/patches-3.2/0050-MIPS-adds-gptu-driver.patch
new file mode 100644
index 0000000000..ade25bfb0d
--- /dev/null
+++ b/target/linux/lantiq/patches-3.2/0050-MIPS-adds-gptu-driver.patch
@@ -0,0 +1,195 @@
+From ce8fccecad845349cc5f6783b3812a17a074d39c Mon Sep 17 00:00:00 2001
+From: John Crispin <blogic@openwrt.org>
+Date: Wed, 14 Mar 2012 15:37:19 +0100
+Subject: [PATCH 50/73] MIPS: adds gptu driver
+
+---
+ arch/mips/lantiq/xway/gptu.c |  176 ++++++++++++++++++++++++++++++++++++++++++
+ 1 files changed, 176 insertions(+), 0 deletions(-)
+ create mode 100644 arch/mips/lantiq/xway/gptu.c
+
+diff --git a/arch/mips/lantiq/xway/gptu.c b/arch/mips/lantiq/xway/gptu.c
+new file mode 100644
+index 0000000..ac82c37
+--- /dev/null
++++ b/arch/mips/lantiq/xway/gptu.c
+@@ -0,0 +1,176 @@
++/*
++ *  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) 2012 John Crispin <blogic@openwrt.org>
++ */
++
++#include <linux/init.h>
++#include <linux/io.h>
++#include <linux/ioport.h>
++#include <linux/pm.h>
++#include <linux/export.h>
++#include <linux/delay.h>
++#include <linux/interrupt.h>
++#include <asm/reboot.h>
++
++#include <lantiq_soc.h>
++#include "../clk.h"
++
++#include "../devices.h"
++
++#define ltq_gptu_w32(x, y)	ltq_w32((x), ltq_gptu_membase + (y))
++#define ltq_gptu_r32(x)		ltq_r32(ltq_gptu_membase + (x))
++
++
++/* the magic ID byte of the core */
++#define GPTU_MAGIC	0x59
++/* clock control register */
++#define GPTU_CLC	0x00
++/* id register */
++#define GPTU_ID		0x08
++/* interrupt node enable */
++#define GPTU_IRNEN	0xf4
++/* interrupt control register */
++#define GPTU_IRCR	0xf8
++/* interrupt capture register */
++#define GPTU_IRNCR	0xfc
++/* there are 3 identical blocks of 2 timers. calculate register offsets */
++#define GPTU_SHIFT(x)	(x % 2 ? 4 : 0)
++#define GPTU_BASE(x)	(((x >> 1) * 0x20) + 0x10)
++/* timer control register */
++#define GPTU_CON(x)	(GPTU_BASE(x) + GPTU_SHIFT(x) + 0x00)
++/* timer auto reload register */
++#define GPTU_RUN(x)	(GPTU_BASE(x) + GPTU_SHIFT(x) + 0x08)
++/* timer manual reload register */
++#define GPTU_RLD(x)	(GPTU_BASE(x) + GPTU_SHIFT(x) + 0x10)
++/* timer count register */
++#define GPTU_CNT(x)	(GPTU_BASE(x) + GPTU_SHIFT(x) + 0x18)
++
++/* GPTU_CON(x) */
++#define CON_CNT		BIT(2)
++#define CON_EDGE_FALL	BIT(7)
++#define CON_SYNC	BIT(8)
++#define CON_CLK_INT	BIT(10)
++
++/* GPTU_RUN(x) */
++#define RUN_SEN		BIT(0)
++#define RUN_RL		BIT(2)
++
++/* set clock to runmode */
++#define CLC_RMC		BIT(8)
++/* bring core out of suspend */
++#define CLC_SUSPEND	BIT(4)
++/* the disable bit */
++#define CLC_DISABLE	BIT(0)
++
++#define TIMER_INTERRUPT	(INT_NUM_IM3_IRL0 + 22)
++
++enum gptu_timer {
++	TIMER1A = 0,
++	TIMER1B,
++	TIMER2A,
++	TIMER2B,
++	TIMER3A,
++	TIMER3B
++};
++
++static struct resource ltq_gptu_resource =
++	MEM_RES("GPTU", LTQ_GPTU_BASE_ADDR, LTQ_GPTU_SIZE);
++
++static void __iomem *ltq_gptu_membase;
++
++static irqreturn_t timer_irq_handler(int irq, void *priv)
++{
++	int timer = irq - TIMER_INTERRUPT;
++	ltq_gptu_w32(1 << timer, GPTU_IRNCR);
++	return IRQ_HANDLED;
++}
++
++static void gptu_hwinit(void)
++{
++	struct clk *clk = clk_get_sys("ltq_gptu", NULL);
++	clk_enable(clk);
++	ltq_gptu_w32(0x00, GPTU_IRNEN);
++	ltq_gptu_w32(0xff, GPTU_IRNCR);
++	ltq_gptu_w32(CLC_RMC | CLC_SUSPEND, GPTU_CLC);
++}
++
++static void gptu_hwexit(void)
++{
++	ltq_gptu_w32(0x00, GPTU_IRNEN);
++	ltq_gptu_w32(0xff, GPTU_IRNCR);
++	ltq_gptu_w32(CLC_DISABLE, GPTU_CLC);
++}
++
++static int ltq_gptu_enable(struct clk *clk)
++{
++	int ret = request_irq(TIMER_INTERRUPT + clk->bits, timer_irq_handler,
++		IRQF_TIMER, "timer", NULL);
++	if (ret) {
++		pr_err("gptu: failed to request irq\n");
++		return ret;
++	}
++
++        ltq_gptu_w32(CON_CNT | CON_EDGE_FALL | CON_SYNC | CON_CLK_INT,
++		GPTU_CON(clk->bits));
++	ltq_gptu_w32(1, GPTU_RLD(clk->bits));
++	ltq_gptu_w32(ltq_gptu_r32(GPTU_IRNEN) | clk->bits, GPTU_IRNEN);
++	ltq_gptu_w32(RUN_SEN | RUN_RL, GPTU_RUN(clk->bits));
++	return 0;
++}
++
++static void ltq_gptu_disable(struct clk *clk)
++{
++	ltq_gptu_w32(0, GPTU_RUN(clk->bits));
++	ltq_gptu_w32(0,	GPTU_CON(clk->bits));
++	ltq_gptu_w32(0, GPTU_RLD(clk->bits));
++	ltq_gptu_w32(ltq_gptu_r32(GPTU_IRNEN) & ~clk->bits, GPTU_IRNEN);
++	free_irq(TIMER_INTERRUPT + clk->bits, NULL);
++}
++
++static inline void clkdev_add_gptu(const char *con, unsigned int timer)
++{
++	struct clk *clk = kzalloc(sizeof(struct clk), GFP_KERNEL);
++
++	clk->cl.dev_id = "ltq_gptu";
++	clk->cl.con_id = con;
++	clk->cl.clk = clk;
++	clk->enable = ltq_gptu_enable;
++	clk->disable = ltq_gptu_disable;
++	clk->bits = timer;
++	clkdev_add(&clk->cl);
++}
++
++static int __init gptu_setup(void)
++{
++	/* remap gptu register range */
++	ltq_gptu_membase = ltq_remap_resource(&ltq_gptu_resource);
++	if (!ltq_gptu_membase)
++		panic("Failed to remap gptu memory");
++
++	/* power up the core */
++	gptu_hwinit();
++
++	/* the gptu has a ID register */
++	if (((ltq_gptu_r32(GPTU_ID) >> 8) & 0xff) != GPTU_MAGIC) {
++		pr_err("gptu: failed to find magic\n");
++		gptu_hwexit();
++		return -ENAVAIL;
++	}
++
++	/* register the clocks */
++	clkdev_add_gptu("timer1a", TIMER1A);
++	clkdev_add_gptu("timer1b", TIMER1B);
++	clkdev_add_gptu("timer2a", TIMER2A);
++	clkdev_add_gptu("timer2b", TIMER2B);
++	clkdev_add_gptu("timer3a", TIMER3A);
++	clkdev_add_gptu("timer3b", TIMER3B);
++
++	pr_info("gptu: 6 timers loaded\n");
++
++	return 0;
++}
++
++arch_initcall(gptu_setup);
+-- 
+1.7.9.1
+