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Commit adcb8627 authored by Manuel Lauss's avatar Manuel Lauss Committed by Ralf Baechle
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MIPS: Alchemy: Convert dbdma.c to syscore_ops 

Convert the PM sysdev to syscore_ops and clean up the ddma addresses a bit.
Signed-off-by: default avatarManuel Lauss <manuel.lauss@googlemail.com>
To: Linux-MIPS <linux-mips@linux-mips.org>
Cc: Florian Fainelli <florian@openwrt.org>
Cc: Wolfgang Grandegger <wg@grandegger.com>
Patchwork: https://patchwork.linux-mips.org/patch/2351/Signed-off-by: default avatarRalf Baechle <ralf@linux-mips.org>
parent 4b5c82b5
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Showing with 47 additions and 88 deletions
arch/mips/alchemy/common/dbdma.c
View file @ adcb8627
......@@ -36,7 +36,7 @@
#include <linux/spinlock.h>
#include <linux/interrupt.h>
#include <linux/module.h>
#include <linux/sysdev.h>
#include <linux/syscore_ops.h>
#include <asm/mach-au1x00/au1000.h>
#include <asm/mach-au1x00/au1xxx_dbdma.h>
......@@ -58,7 +58,8 @@ static DEFINE_SPINLOCK(au1xxx_dbdma_spin_lock);
/* I couldn't find a macro that did this... */
#define ALIGN_ADDR(x, a) ((((u32)(x)) + (a-1)) & ~(a-1))
static dbdma_global_t *dbdma_gptr = (dbdma_global_t *)DDMA_GLOBAL_BASE;
static dbdma_global_t *dbdma_gptr =
(dbdma_global_t *)KSEG1ADDR(AU1550_DBDMA_CONF_PHYS_ADDR);
static int dbdma_initialized;
static dbdev_tab_t dbdev_tab[] = {
......@@ -299,7 +300,7 @@ u32 au1xxx_dbdma_chan_alloc(u32 srcid, u32 destid,
if (ctp != NULL) {
memset(ctp, 0, sizeof(chan_tab_t));
ctp->chan_index = chan = i;
dcp = DDMA_CHANNEL_BASE;
dcp = KSEG1ADDR(AU1550_DBDMA_PHYS_ADDR);
dcp += (0x0100 * chan);
ctp->chan_ptr = (au1x_dma_chan_t *)dcp;
cp = (au1x_dma_chan_t *)dcp;
......@@ -958,105 +959,75 @@ u32 au1xxx_dbdma_put_dscr(u32 chanid, au1x_ddma_desc_t *dscr)
}
struct alchemy_dbdma_sysdev {
struct sys_device sysdev;
u32 pm_regs[NUM_DBDMA_CHANS + 1][6];
};
static unsigned long alchemy_dbdma_pm_data[NUM_DBDMA_CHANS + 1][6];
static int alchemy_dbdma_suspend(struct sys_device *dev,
pm_message_t state)
static int alchemy_dbdma_suspend(void)
{
struct alchemy_dbdma_sysdev *sdev =
container_of(dev, struct alchemy_dbdma_sysdev, sysdev);
int i;
u32 addr;
void __iomem *addr;
addr = DDMA_GLOBAL_BASE;
sdev->pm_regs[0][0] = au_readl(addr + 0x00);
sdev->pm_regs[0][1] = au_readl(addr + 0x04);
sdev->pm_regs[0][2] = au_readl(addr + 0x08);
sdev->pm_regs[0][3] = au_readl(addr + 0x0c);
addr = (void __iomem *)KSEG1ADDR(AU1550_DBDMA_CONF_PHYS_ADDR);
alchemy_dbdma_pm_data[0][0] = __raw_readl(addr + 0x00);
alchemy_dbdma_pm_data[0][1] = __raw_readl(addr + 0x04);
alchemy_dbdma_pm_data[0][2] = __raw_readl(addr + 0x08);
alchemy_dbdma_pm_data[0][3] = __raw_readl(addr + 0x0c);
/* save channel configurations */
for (i = 1, addr = DDMA_CHANNEL_BASE; i <= NUM_DBDMA_CHANS; i++) {
sdev->pm_regs[i][0] = au_readl(addr + 0x00);
sdev->pm_regs[i][1] = au_readl(addr + 0x04);
sdev->pm_regs[i][2] = au_readl(addr + 0x08);
sdev->pm_regs[i][3] = au_readl(addr + 0x0c);
sdev->pm_regs[i][4] = au_readl(addr + 0x10);
sdev->pm_regs[i][5] = au_readl(addr + 0x14);
addr = (void __iomem *)KSEG1ADDR(AU1550_DBDMA_PHYS_ADDR);
for (i = 1; i <= NUM_DBDMA_CHANS; i++) {
alchemy_dbdma_pm_data[i][0] = __raw_readl(addr + 0x00);
alchemy_dbdma_pm_data[i][1] = __raw_readl(addr + 0x04);
alchemy_dbdma_pm_data[i][2] = __raw_readl(addr + 0x08);
alchemy_dbdma_pm_data[i][3] = __raw_readl(addr + 0x0c);
alchemy_dbdma_pm_data[i][4] = __raw_readl(addr + 0x10);
alchemy_dbdma_pm_data[i][5] = __raw_readl(addr + 0x14);
/* halt channel */
au_writel(sdev->pm_regs[i][0] & ~1, addr + 0x00);
au_sync();
while (!(au_readl(addr + 0x14) & 1))
au_sync();
__raw_writel(alchemy_dbdma_pm_data[i][0] & ~1, addr + 0x00);
wmb();
while (!(__raw_readl(addr + 0x14) & 1))
wmb();
addr += 0x100; /* next channel base */
}
/* disable channel interrupts */
au_writel(0, DDMA_GLOBAL_BASE + 0x0c);
au_sync();
addr = (void __iomem *)KSEG1ADDR(AU1550_DBDMA_CONF_PHYS_ADDR);
__raw_writel(0, addr + 0x0c);
wmb();
return 0;
}
static int alchemy_dbdma_resume(struct sys_device *dev)
static void alchemy_dbdma_resume(void)
{
struct alchemy_dbdma_sysdev *sdev =
container_of(dev, struct alchemy_dbdma_sysdev, sysdev);
int i;
u32 addr;
void __iomem *addr;
addr = DDMA_GLOBAL_BASE;
au_writel(sdev->pm_regs[0][0], addr + 0x00);
au_writel(sdev->pm_regs[0][1], addr + 0x04);
au_writel(sdev->pm_regs[0][2], addr + 0x08);
au_writel(sdev->pm_regs[0][3], addr + 0x0c);
addr = (void __iomem *)KSEG1ADDR(AU1550_DBDMA_CONF_PHYS_ADDR);
__raw_writel(alchemy_dbdma_pm_data[0][0], addr + 0x00);
__raw_writel(alchemy_dbdma_pm_data[0][1], addr + 0x04);
__raw_writel(alchemy_dbdma_pm_data[0][2], addr + 0x08);
__raw_writel(alchemy_dbdma_pm_data[0][3], addr + 0x0c);
/* restore channel configurations */
for (i = 1, addr = DDMA_CHANNEL_BASE; i <= NUM_DBDMA_CHANS; i++) {
au_writel(sdev->pm_regs[i][0], addr + 0x00);
au_writel(sdev->pm_regs[i][1], addr + 0x04);
au_writel(sdev->pm_regs[i][2], addr + 0x08);
au_writel(sdev->pm_regs[i][3], addr + 0x0c);
au_writel(sdev->pm_regs[i][4], addr + 0x10);
au_writel(sdev->pm_regs[i][5], addr + 0x14);
au_sync();
addr = (void __iomem *)KSEG1ADDR(AU1550_DBDMA_PHYS_ADDR);
for (i = 1; i <= NUM_DBDMA_CHANS; i++) {
__raw_writel(alchemy_dbdma_pm_data[i][0], addr + 0x00);
__raw_writel(alchemy_dbdma_pm_data[i][1], addr + 0x04);
__raw_writel(alchemy_dbdma_pm_data[i][2], addr + 0x08);
__raw_writel(alchemy_dbdma_pm_data[i][3], addr + 0x0c);
__raw_writel(alchemy_dbdma_pm_data[i][4], addr + 0x10);
__raw_writel(alchemy_dbdma_pm_data[i][5], addr + 0x14);
wmb();
addr += 0x100; /* next channel base */
}
return 0;
}
static struct sysdev_class alchemy_dbdma_sysdev_class = {
.name = "dbdma",
static struct syscore_ops alchemy_dbdma_syscore_ops = {
.suspend = alchemy_dbdma_suspend,
.resume = alchemy_dbdma_resume,
};
static int __init alchemy_dbdma_sysdev_init(void)
{
struct alchemy_dbdma_sysdev *sdev;
int ret;
ret = sysdev_class_register(&alchemy_dbdma_sysdev_class);
if (ret)
return ret;
sdev = kzalloc(sizeof(struct alchemy_dbdma_sysdev), GFP_KERNEL);
if (!sdev)
return -ENOMEM;
sdev->sysdev.id = -1;
sdev->sysdev.cls = &alchemy_dbdma_sysdev_class;
ret = sysdev_register(&sdev->sysdev);
if (ret)
kfree(sdev);
return ret;
}
static int __init au1xxx_dbdma_init(void)
{
int irq_nr, ret;
......@@ -1084,11 +1055,7 @@ static int __init au1xxx_dbdma_init(void)
else {
dbdma_initialized = 1;
printk(KERN_INFO "Alchemy DBDMA initialized\n");
ret = alchemy_dbdma_sysdev_init();
if (ret) {
printk(KERN_ERR "DBDMA PM init failed\n");
ret = 0;
}
register_syscore_ops(&alchemy_dbdma_syscore_ops);
}
return ret;
......
arch/mips/include/asm/mach-au1x00/au1000.h
View file @ adcb8627
......@@ -635,6 +635,8 @@ enum soc_au1200_ints {
#define AU1000_IC0_PHYS_ADDR 0x10400000 /* 01234 */
#define AU1000_IC1_PHYS_ADDR 0x11800000 /* 01234 */
#define AU1550_DBDMA_PHYS_ADDR 0x14002000 /* 34 */
#define AU1550_DBDMA_CONF_PHYS_ADDR 0x14003000 /* 34 */
#ifdef CONFIG_SOC_AU1000
......@@ -761,7 +763,6 @@ enum soc_au1200_ints {
#define UART3_PHYS_ADDR 0x11400000
#define GPIO2_PHYS_ADDR 0x11700000
#define SYS_PHYS_ADDR 0x11900000
#define DDMA_PHYS_ADDR 0x14002000
#define PE_PHYS_ADDR 0x14008000
#define PSC0_PHYS_ADDR 0x11A00000
#define PSC1_PHYS_ADDR 0x11B00000
......@@ -789,7 +790,6 @@ enum soc_au1200_ints {
#define UART1_PHYS_ADDR 0x11200000
#define GPIO2_PHYS_ADDR 0x11700000
#define SYS_PHYS_ADDR 0x11900000
#define DDMA_PHYS_ADDR 0x14002000
#define PSC0_PHYS_ADDR 0x11A00000
#define PSC1_PHYS_ADDR 0x11B00000
#define SD0_PHYS_ADDR 0x10600000
......
arch/mips/include/asm/mach-au1x00/au1xxx_dbdma.h
View file @ adcb8627
......@@ -37,14 +37,6 @@
#ifndef _LANGUAGE_ASSEMBLY
/*
* The DMA base addresses.
* The channels are every 256 bytes (0x0100) from the channel 0 base.
* Interrupt status/enable is bits 15:0 for channels 15 to zero.
*/
#define DDMA_GLOBAL_BASE 0xb4003000
#define DDMA_CHANNEL_BASE 0xb4002000
typedef volatile struct dbdma_global {
u32 ddma_config;
u32 ddma_intstat;
......
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