diff options
| author | Ingo Molnar <mingo@elte.hu> | 2009-02-04 14:54:56 +0100 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2009-02-04 14:54:56 +0100 |
| commit | bb960a1e42042e82447a5bc0941b3ab6d614bac3 (patch) | |
| tree | d2295a923fabb1b01b25bb015c4c2e42ee9df5ca /arch/mips/alchemy/common/dbdma.c | |
| parent | 858770619debfb9269add63e4ba8b7c6b5538dd1 (diff) | |
| parent | 06fc732c33a7ff5e4c91bcf4a6ca86b5e335ad9a (diff) | |
Merge branch 'core/xen' into x86/urgent
Diffstat (limited to 'arch/mips/alchemy/common/dbdma.c')
| -rw-r--r-- | arch/mips/alchemy/common/dbdma.c | 65 |
1 files changed, 65 insertions, 0 deletions
diff --git a/arch/mips/alchemy/common/dbdma.c b/arch/mips/alchemy/common/dbdma.c index 601ee9180ee4..3ab6d80d150d 100644 --- a/arch/mips/alchemy/common/dbdma.c +++ b/arch/mips/alchemy/common/dbdma.c @@ -174,6 +174,11 @@ static dbdev_tab_t dbdev_tab[] = { #define DBDEV_TAB_SIZE ARRAY_SIZE(dbdev_tab) +#ifdef CONFIG_PM +static u32 au1xxx_dbdma_pm_regs[NUM_DBDMA_CHANS + 1][8]; +#endif + + static chan_tab_t *chan_tab_ptr[NUM_DBDMA_CHANS]; static dbdev_tab_t *find_dbdev_id(u32 id) @@ -975,4 +980,64 @@ u32 au1xxx_dbdma_put_dscr(u32 chanid, au1x_ddma_desc_t *dscr) return nbytes; } +#ifdef CONFIG_PM +void au1xxx_dbdma_suspend(void) +{ + int i; + u32 addr; + + addr = DDMA_GLOBAL_BASE; + au1xxx_dbdma_pm_regs[0][0] = au_readl(addr + 0x00); + au1xxx_dbdma_pm_regs[0][1] = au_readl(addr + 0x04); + au1xxx_dbdma_pm_regs[0][2] = au_readl(addr + 0x08); + au1xxx_dbdma_pm_regs[0][3] = au_readl(addr + 0x0c); + + /* save channel configurations */ + for (i = 1, addr = DDMA_CHANNEL_BASE; i < NUM_DBDMA_CHANS; i++) { + au1xxx_dbdma_pm_regs[i][0] = au_readl(addr + 0x00); + au1xxx_dbdma_pm_regs[i][1] = au_readl(addr + 0x04); + au1xxx_dbdma_pm_regs[i][2] = au_readl(addr + 0x08); + au1xxx_dbdma_pm_regs[i][3] = au_readl(addr + 0x0c); + au1xxx_dbdma_pm_regs[i][4] = au_readl(addr + 0x10); + au1xxx_dbdma_pm_regs[i][5] = au_readl(addr + 0x14); + au1xxx_dbdma_pm_regs[i][6] = au_readl(addr + 0x18); + + /* halt channel */ + au_writel(au1xxx_dbdma_pm_regs[i][0] & ~1, addr + 0x00); + au_sync(); + while (!(au_readl(addr + 0x14) & 1)) + au_sync(); + + addr += 0x100; /* next channel base */ + } + /* disable channel interrupts */ + au_writel(0, DDMA_GLOBAL_BASE + 0x0c); + au_sync(); +} + +void au1xxx_dbdma_resume(void) +{ + int i; + u32 addr; + + addr = DDMA_GLOBAL_BASE; + au_writel(au1xxx_dbdma_pm_regs[0][0], addr + 0x00); + au_writel(au1xxx_dbdma_pm_regs[0][1], addr + 0x04); + au_writel(au1xxx_dbdma_pm_regs[0][2], addr + 0x08); + au_writel(au1xxx_dbdma_pm_regs[0][3], addr + 0x0c); + + /* restore channel configurations */ + for (i = 1, addr = DDMA_CHANNEL_BASE; i < NUM_DBDMA_CHANS; i++) { + au_writel(au1xxx_dbdma_pm_regs[i][0], addr + 0x00); + au_writel(au1xxx_dbdma_pm_regs[i][1], addr + 0x04); + au_writel(au1xxx_dbdma_pm_regs[i][2], addr + 0x08); + au_writel(au1xxx_dbdma_pm_regs[i][3], addr + 0x0c); + au_writel(au1xxx_dbdma_pm_regs[i][4], addr + 0x10); + au_writel(au1xxx_dbdma_pm_regs[i][5], addr + 0x14); + au_writel(au1xxx_dbdma_pm_regs[i][6], addr + 0x18); + au_sync(); + addr += 0x100; /* next channel base */ + } +} +#endif /* CONFIG_PM */ #endif /* defined(CONFIG_SOC_AU1550) || defined(CONFIG_SOC_AU1200) */ |