From: Paul Mundt <lethal@Linux-SH.ORG>
This adds support for the SM501/VoyagerGX companion chip, used by the
RTS7751R2D.
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
---
25-akpm/arch/sh/cchips/Kconfig | 13 +
25-akpm/arch/sh/cchips/voyagergx/Makefile | 8 +
25-akpm/arch/sh/cchips/voyagergx/consistent.c | 126 ++++++++++++++++
25-akpm/arch/sh/cchips/voyagergx/irq.c | 194 ++++++++++++++++++++++++++
25-akpm/arch/sh/cchips/voyagergx/setup.c | 37 ++++
5 files changed, 378 insertions(+)
diff -puN arch/sh/cchips/Kconfig~sh-voyagergx-companion-chip-support arch/sh/cchips/Kconfig
--- 25/arch/sh/cchips/Kconfig~sh-voyagergx-companion-chip-support 2004-06-23 20:00:20.439582736 -0700
+++ 25-akpm/arch/sh/cchips/Kconfig 2004-06-23 20:00:20.443582128 -0700
@@ -1,5 +1,18 @@
menu "Companion Chips"
+config VOYAGERGX
+ bool "VoyagerGX chip support"
+ depends on SH_RTS7751R2D
+ help
+ Selecting this option will support Silicon Motion, Inc. SM501.
+ Designed to complement needs for the embedded industry, it
+ provides video and 2D capability. To reduce system cost a
+ wide variety of include I/O is supported, including analog RGB
+ and digital LCD Panel interface, 8-bit parallel interface, USB,
+ UART, IrDA, Zoom Video, AC97 or I2S, SSP, PWM, and I2C. There
+ are additional GPIO bits that can be used to interface to
+ external as well.
+
# A board must have defined HD6446X_SERIES in order to see these
config HD6446X_SERIES
bool "HD6446x support"
diff -puN /dev/null arch/sh/cchips/voyagergx/consistent.c
--- /dev/null 2003-09-15 06:40:47.000000000 -0700
+++ 25-akpm/arch/sh/cchips/voyagergx/consistent.c 2004-06-23 20:00:20.444581976 -0700
@@ -0,0 +1,126 @@
+/*
+ * arch/sh/cchips/voyagergx/consistent.c
+ *
+ * Copyright (C) 2004 Paul Mundt
+ *
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License. See the file "COPYING" in the main directory of this archive
+ * for more details.
+ */
+#include <linux/mm.h>
+#include <linux/dma-mapping.h>
+#include <linux/slab.h>
+#include <linux/list.h>
+#include <linux/types.h>
+#include <linux/module.h>
+#include <linux/device.h>
+#include <asm/io.h>
+#include <asm/bus-sh.h>
+
+struct voya_alloc_entry {
+ struct list_head list;
+ unsigned long ofs;
+ unsigned long len;
+};
+
+static spinlock_t voya_list_lock = SPIN_LOCK_UNLOCKED;
+static LIST_HEAD(voya_alloc_list);
+
+#define OHCI_SRAM_START 0xb0000000
+#define OHCI_HCCA_SIZE 0x100
+#define OHCI_SRAM_SIZE 0x10000
+
+void *voyagergx_consistent_alloc(struct device *dev, size_t size,
+ dma_addr_t *handle, int flag)
+{
+ struct list_head *list = &voya_alloc_list;
+ struct voya_alloc_entry *entry;
+ struct sh_dev *shdev = to_sh_dev(dev);
+ unsigned long start, end;
+ unsigned long flags;
+
+ /*
+ * The SM501 contains an integrated 8051 with its own SRAM.
+ * Devices within the cchip can all hook into the 8051 SRAM.
+ * We presently use this for the OHCI.
+ *
+ * Everything else goes through consistent_alloc().
+ */
+ if (!dev || dev->bus != &sh_bus_types[SH_BUS_VIRT] ||
+ (dev->bus == &sh_bus_types[SH_BUS_VIRT] &&
+ shdev->dev_id != SH_DEV_ID_USB_OHCI))
+ return consistent_alloc(flag, size, handle);
+
+ start = OHCI_SRAM_START + OHCI_HCCA_SIZE;
+
+ entry = kmalloc(sizeof(struct voya_alloc_entry), GFP_ATOMIC);
+ if (!entry)
+ return NULL;
+
+ entry->len = (size + 15) & ~15;
+
+ /*
+ * The basis for this allocator is dwmw2's malloc.. the
+ * Matrox allocator :-)
+ */
+ spin_lock_irqsave(&voya_list_lock, flags);
+ list_for_each(list, &voya_alloc_list) {
+ struct voya_alloc_entry *p;
+
+ p = list_entry(list, struct voya_alloc_entry, list);
+
+ if (p->ofs - start >= size)
+ goto out;
+
+ start = p->ofs + p->len;
+ }
+
+ end = start + (OHCI_SRAM_SIZE - OHCI_HCCA_SIZE);
+ list = &voya_alloc_list;
+
+ if (end - start >= size) {
+out:
+ entry->ofs = start;
+ list_add_tail(&entry->list, list);
+ spin_unlock_irqrestore(&voya_list_lock, flags);
+
+ *handle = start;
+ return (void *)start;
+ }
+
+ kfree(entry);
+ spin_unlock_irqrestore(&voya_list_lock, flags);
+
+ return NULL;
+}
+
+void voyagergx_consistent_free(struct device *dev, size_t size,
+ void *vaddr, dma_addr_t handle)
+{
+ struct voya_alloc_entry *entry;
+ struct sh_dev *shdev = to_sh_dev(dev);
+ unsigned long flags;
+
+ if (!dev || dev->bus != &sh_bus_types[SH_BUS_VIRT] ||
+ (dev->bus == &sh_bus_types[SH_BUS_VIRT] &&
+ shdev->dev_id != SH_DEV_ID_USB_OHCI)) {
+ consistent_free(vaddr, size);
+ return;
+ }
+
+ spin_lock_irqsave(&voya_list_lock, flags);
+ list_for_each_entry(entry, &voya_alloc_list, list) {
+ if (entry->ofs != handle)
+ continue;
+
+ list_del(&entry->list);
+ kfree(entry);
+
+ break;
+ }
+ spin_unlock_irqrestore(&voya_list_lock, flags);
+}
+
+EXPORT_SYMBOL(voyagergx_consistent_alloc);
+EXPORT_SYMBOL(voyagergx_consistent_free);
+
diff -puN /dev/null arch/sh/cchips/voyagergx/irq.c
--- /dev/null 2003-09-15 06:40:47.000000000 -0700
+++ 25-akpm/arch/sh/cchips/voyagergx/irq.c 2004-06-23 20:00:20.446581672 -0700
@@ -0,0 +1,194 @@
+/* -------------------------------------------------------------------- */
+/* setup_voyagergx.c: */
+/* -------------------------------------------------------------------- */
+/* This program is free software; you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation; either version 2 of the License, or
+ (at your option) any later version.
+
+ 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.
+
+ 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., 675 Mass Ave, Cambridge, MA 02139, USA.
+
+ Copyright 2003 (c) Lineo uSolutions,Inc.
+*/
+/* -------------------------------------------------------------------- */
+
+#undef DEBUG
+
+#include <linux/config.h>
+#include <linux/sched.h>
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/param.h>
+#include <linux/ioport.h>
+#include <linux/interrupt.h>
+#include <linux/init.h>
+#include <linux/irq.h>
+
+#include <asm/io.h>
+#include <asm/irq.h>
+#include <asm/rts7751r2d/rts7751r2d.h>
+#include <asm/rts7751r2d/voyagergx_reg.h>
+
+static void disable_voyagergx_irq(unsigned int irq)
+{
+ unsigned long flags, val;
+ unsigned long mask = 1 << (irq - VOYAGER_IRQ_BASE);
+
+ pr_debug("disable_voyagergx_irq(%d): mask=%x\n", irq, mask);
+ local_irq_save(flags);
+ val = inl(VOYAGER_INT_MASK);
+ val &= ~mask;
+ outl(val, VOYAGER_INT_MASK);
+ local_irq_restore(flags);
+}
+
+
+static void enable_voyagergx_irq(unsigned int irq)
+{
+ unsigned long flags, val;
+ unsigned long mask = 1 << (irq - VOYAGER_IRQ_BASE);
+
+ pr_debug("disable_voyagergx_irq(%d): mask=%x\n", irq, mask);
+ local_irq_save(flags);
+ val = inl(VOYAGER_INT_MASK);
+ val |= mask;
+ outl(val, VOYAGER_INT_MASK);
+ local_irq_restore(flags);
+}
+
+
+static void mask_and_ack_voyagergx(unsigned int irq)
+{
+ disable_voyagergx_irq(irq);
+}
+
+static void end_voyagergx_irq(unsigned int irq)
+{
+ if (!(irq_desc[irq].status & (IRQ_DISABLED|IRQ_INPROGRESS)))
+ enable_voyagergx_irq(irq);
+}
+
+static unsigned int startup_voyagergx_irq(unsigned int irq)
+{
+ enable_voyagergx_irq(irq);
+ return 0;
+}
+
+static void shutdown_voyagergx_irq(unsigned int irq)
+{
+ disable_voyagergx_irq(irq);
+}
+
+static struct hw_interrupt_type voyagergx_irq_type = {
+ "VOYAGERGX-IRQ",
+ startup_voyagergx_irq,
+ shutdown_voyagergx_irq,
+ enable_voyagergx_irq,
+ disable_voyagergx_irq,
+ mask_and_ack_voyagergx,
+ end_voyagergx_irq,
+};
+
+static irqreturn_t voyagergx_interrupt(int irq, void *dev_id, struct pt_regs *regs)
+{
+ printk(KERN_INFO
+ "VoyagerGX: spurious interrupt, status: 0x%x\n",
+ inl(INT_STATUS));
+ return IRQ_HANDLED;
+}
+
+
+/*====================================================*/
+
+static struct {
+ int (*func)(int, void *);
+ void *dev;
+} voyagergx_demux[VOYAGER_IRQ_NUM];
+
+void voyagergx_register_irq_demux(int irq,
+ int (*demux)(int irq, void *dev), void *dev)
+{
+ voyagergx_demux[irq - VOYAGER_IRQ_BASE].func = demux;
+ voyagergx_demux[irq - VOYAGER_IRQ_BASE].dev = dev;
+}
+
+void voyagergx_unregister_irq_demux(int irq)
+{
+ voyagergx_demux[irq - VOYAGER_IRQ_BASE].func = 0;
+}
+
+int voyagergx_irq_demux(int irq)
+{
+
+ if (irq == IRQ_VOYAGER ) {
+ unsigned long i = 0, bit __attribute__ ((unused));
+ unsigned long val = inl(INT_STATUS);
+#if 1
+ if ( val & ( 1 << 1 )){
+ i = 1;
+ } else if ( val & ( 1 << 2 )){
+ i = 2;
+ } else if ( val & ( 1 << 6 )){
+ i = 6;
+ } else if( val & ( 1 << 10 )){
+ i = 10;
+ } else if( val & ( 1 << 11 )){
+ i = 11;
+ } else if( val & ( 1 << 12 )){
+ i = 12;
+ } else if( val & ( 1 << 17 )){
+ i = 17;
+ } else {
+ printk("Unexpected IRQ irq = %d status = 0x%08lx\n", irq, val);
+ }
+ pr_debug("voyagergx_irq_demux %d \n", i);
+#else
+ for (bit = 1, i = 0 ; i < VOYAGER_IRQ_NUM ; bit <<= 1, i++)
+ if (val & bit)
+ break;
+#endif
+ if (i < VOYAGER_IRQ_NUM) {
+ irq = VOYAGER_IRQ_BASE + i;
+ if (voyagergx_demux[i].func != 0)
+ irq = voyagergx_demux[i].func(irq, voyagergx_demux[i].dev);
+ }
+ }
+ return irq;
+}
+
+static struct irqaction irq0 = { voyagergx_interrupt, SA_INTERRUPT, 0, "VOYAGERGX", NULL, NULL};
+
+void __init setup_voyagergx_irq(void)
+{
+ int i, flag;
+
+ printk(KERN_INFO "VoyagerGX configured at 0x%x on irq %d(mapped into %d to %d)\n",
+ VOYAGER_BASE,
+ IRQ_VOYAGER,
+ VOYAGER_IRQ_BASE,
+ VOYAGER_IRQ_BASE + VOYAGER_IRQ_NUM - 1);
+
+ for (i=0; i<VOYAGER_IRQ_NUM; i++) {
+ flag = 0;
+ switch (VOYAGER_IRQ_BASE + i) {
+ case VOYAGER_USBH_IRQ:
+ case VOYAGER_8051_IRQ:
+ case VOYAGER_UART0_IRQ:
+ case VOYAGER_UART1_IRQ:
+ case VOYAGER_AC97_IRQ:
+ flag = 1;
+ }
+ if (flag == 1)
+ irq_desc[VOYAGER_IRQ_BASE + i].handler = &voyagergx_irq_type;
+ }
+
+ setup_irq(IRQ_VOYAGER, &irq0);
+}
+
diff -puN /dev/null arch/sh/cchips/voyagergx/Makefile
--- /dev/null 2003-09-15 06:40:47.000000000 -0700
+++ 25-akpm/arch/sh/cchips/voyagergx/Makefile 2004-06-23 20:00:20.447581520 -0700
@@ -0,0 +1,8 @@
+#
+# Makefile for VoyagerGX
+#
+
+obj-y := irq.o setup.o
+
+obj-$(CONFIG_USB_OHCI_HCD) += consistent.o
+
diff -puN /dev/null arch/sh/cchips/voyagergx/setup.c
--- /dev/null 2003-09-15 06:40:47.000000000 -0700
+++ 25-akpm/arch/sh/cchips/voyagergx/setup.c 2004-06-23 20:00:20.448581368 -0700
@@ -0,0 +1,37 @@
+/*
+ * arch/sh/cchips/voyagergx/setup.c
+ *
+ * Setup routines for VoyagerGX cchip.
+ *
+ * Copyright (C) 2003 Lineo uSolutions, Inc.
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; either version 2 of the License, or (at your
+ * option) any later version.
+ */
+#include <linux/init.h>
+#include <linux/module.h>
+#include <asm/io.h>
+#include <asm/rts7751r2d/voyagergx_reg.h>
+
+static int __init setup_voyagergx(void)
+{
+ unsigned long val;
+
+ val = inl(DRAM_CTRL);
+ val |= (DRAM_CTRL_CPU_COLUMN_SIZE_256 |
+ DRAM_CTRL_CPU_ACTIVE_PRECHARGE |
+ DRAM_CTRL_CPU_RESET |
+ DRAM_CTRL_REFRESH_COMMAND |
+ DRAM_CTRL_BLOCK_WRITE_TIME |
+ DRAM_CTRL_BLOCK_WRITE_PRECHARGE |
+ DRAM_CTRL_ACTIVE_PRECHARGE |
+ DRAM_CTRL_RESET |
+ DRAM_CTRL_REMAIN_ACTIVE);
+ outl(val, DRAM_CTRL);
+
+ return 0;
+}
+
+module_init(setup_voyagergx);
_