From 3dcb00ea58f6b5dc62b89bbfd54353a06e6af921 Mon Sep 17 00:00:00 2001 From: eric miao Date: Fri, 30 Nov 2007 18:26:56 +0800 Subject: [ARM] pxa: use __raw_writel()/__raw_readl() for ssp_xxxx() 1. change SSP register definitions from absolute virtual addresses to offsets 2. use __raw_writel()/__raw_readl() for functions of ssp_xxxx() Signed-off-by: eric miao Signed-off-by: Russell King --- arch/arm/mach-pxa/ssp.c | 77 +++++++++++++++++++++++++++++++------------------ 1 file changed, 49 insertions(+), 28 deletions(-) (limited to 'arch/arm/mach-pxa/ssp.c') diff --git a/arch/arm/mach-pxa/ssp.c b/arch/arm/mach-pxa/ssp.c index 0225ee016f2..b6d37fa7b85 100644 --- a/arch/arm/mach-pxa/ssp.c +++ b/arch/arm/mach-pxa/ssp.c @@ -48,9 +48,11 @@ static irqreturn_t ssp_interrupt(int irq, void *dev_id) { struct ssp_dev *dev = (struct ssp_dev*) dev_id; - unsigned int status = SSSR_P(dev->port); + struct ssp_device *ssp = dev->ssp; + unsigned int status; - SSSR_P(dev->port) = status; /* clear status bits */ + status = __raw_readl(ssp->mmio_base + SSSR); + __raw_writel(status, ssp->mmio_base + SSSR); if (status & SSSR_ROR) printk(KERN_WARNING "SSP(%d): receiver overrun\n", dev->port); @@ -79,15 +81,16 @@ static irqreturn_t ssp_interrupt(int irq, void *dev_id) */ int ssp_write_word(struct ssp_dev *dev, u32 data) { + struct ssp_device *ssp = dev->ssp; int timeout = TIMEOUT; - while (!(SSSR_P(dev->port) & SSSR_TNF)) { + while (!(__raw_readl(ssp->mmio_base + SSSR) & SSSR_TNF)) { if (!--timeout) return -ETIMEDOUT; cpu_relax(); } - SSDR_P(dev->port) = data; + __raw_writel(data, ssp->mmio_base + SSDR); return 0; } @@ -109,15 +112,16 @@ int ssp_write_word(struct ssp_dev *dev, u32 data) */ int ssp_read_word(struct ssp_dev *dev, u32 *data) { + struct ssp_device *ssp = dev->ssp; int timeout = TIMEOUT; - while (!(SSSR_P(dev->port) & SSSR_RNE)) { + while (!(__raw_readl(ssp->mmio_base + SSSR) & SSSR_RNE)) { if (!--timeout) return -ETIMEDOUT; cpu_relax(); } - *data = SSDR_P(dev->port); + *data = __raw_readl(ssp->mmio_base + SSDR); return 0; } @@ -131,17 +135,18 @@ int ssp_read_word(struct ssp_dev *dev, u32 *data) */ int ssp_flush(struct ssp_dev *dev) { + struct ssp_device *ssp = dev->ssp; int timeout = TIMEOUT * 2; do { - while (SSSR_P(dev->port) & SSSR_RNE) { + while (__raw_readl(ssp->mmio_base + SSSR) & SSSR_RNE) { if (!--timeout) return -ETIMEDOUT; - (void) SSDR_P(dev->port); + (void)__raw_readl(ssp->mmio_base + SSDR); } if (!--timeout) return -ETIMEDOUT; - } while (SSSR_P(dev->port) & SSSR_BSY); + } while (__raw_readl(ssp->mmio_base + SSSR) & SSSR_BSY); return 0; } @@ -153,7 +158,12 @@ int ssp_flush(struct ssp_dev *dev) */ void ssp_enable(struct ssp_dev *dev) { - SSCR0_P(dev->port) |= SSCR0_SSE; + struct ssp_device *ssp = dev->ssp; + uint32_t sscr0; + + sscr0 = __raw_readl(ssp->mmio_base + SSCR0); + sscr0 |= SSCR0_SSE; + __raw_writel(sscr0, ssp->mmio_base + SSCR0); } /** @@ -163,7 +173,12 @@ void ssp_enable(struct ssp_dev *dev) */ void ssp_disable(struct ssp_dev *dev) { - SSCR0_P(dev->port) &= ~SSCR0_SSE; + struct ssp_device *ssp = dev->ssp; + uint32_t sscr0; + + sscr0 = __raw_readl(ssp->mmio_base + SSCR0); + sscr0 &= ~SSCR0_SSE; + __raw_writel(sscr0, ssp->mmio_base + SSCR0); } /** @@ -172,14 +187,16 @@ void ssp_disable(struct ssp_dev *dev) * * Save the configured SSP state for suspend. */ -void ssp_save_state(struct ssp_dev *dev, struct ssp_state *ssp) +void ssp_save_state(struct ssp_dev *dev, struct ssp_state *state) { - ssp->cr0 = SSCR0_P(dev->port); - ssp->cr1 = SSCR1_P(dev->port); - ssp->to = SSTO_P(dev->port); - ssp->psp = SSPSP_P(dev->port); + struct ssp_device *ssp = dev->ssp; + + state->cr0 = __raw_readl(ssp->mmio_base + SSCR0); + state->cr1 = __raw_readl(ssp->mmio_base + SSCR1); + state->to = __raw_readl(ssp->mmio_base + SSTO); + state->psp = __raw_readl(ssp->mmio_base + SSPSP); - SSCR0_P(dev->port) &= ~SSCR0_SSE; + ssp_disable(dev); } /** @@ -188,16 +205,18 @@ void ssp_save_state(struct ssp_dev *dev, struct ssp_state *ssp) * * Restore the SSP configuration saved previously by ssp_save_state. */ -void ssp_restore_state(struct ssp_dev *dev, struct ssp_state *ssp) +void ssp_restore_state(struct ssp_dev *dev, struct ssp_state *state) { - SSSR_P(dev->port) = SSSR_ROR | SSSR_TUR | SSSR_BCE; + struct ssp_device *ssp = dev->ssp; + uint32_t sssr = SSSR_ROR | SSSR_TUR | SSSR_BCE; - SSCR0_P(dev->port) = ssp->cr0 & ~SSCR0_SSE; - SSCR1_P(dev->port) = ssp->cr1; - SSTO_P(dev->port) = ssp->to; - SSPSP_P(dev->port) = ssp->psp; + __raw_writel(sssr, ssp->mmio_base + SSSR); - SSCR0_P(dev->port) = ssp->cr0; + __raw_writel(state->cr0 & ~SSCR0_SSE, ssp->mmio_base + SSCR0); + __raw_writel(state->cr1, ssp->mmio_base + SSCR1); + __raw_writel(state->to, ssp->mmio_base + SSTO); + __raw_writel(state->psp, ssp->mmio_base + SSPSP); + __raw_writel(state->cr0, ssp->mmio_base + SSCR0); } /** @@ -211,15 +230,17 @@ void ssp_restore_state(struct ssp_dev *dev, struct ssp_state *ssp) */ int ssp_config(struct ssp_dev *dev, u32 mode, u32 flags, u32 psp_flags, u32 speed) { + struct ssp_device *ssp = dev->ssp; + dev->mode = mode; dev->flags = flags; dev->psp_flags = psp_flags; dev->speed = speed; /* set up port type, speed, port settings */ - SSCR0_P(dev->port) = (dev->speed | dev->mode); - SSCR1_P(dev->port) = dev->flags; - SSPSP_P(dev->port) = dev->psp_flags; + __raw_writel((dev->speed | dev->mode), ssp->mmio_base + SSCR0); + __raw_writel(dev->flags, ssp->mmio_base + SSCR1); + __raw_writel(dev->psp_flags, ssp->mmio_base + SSPSP); return 0; } @@ -274,7 +295,7 @@ void ssp_exit(struct ssp_dev *dev) { struct ssp_device *ssp = dev->ssp; - SSCR0_P(dev->port) &= ~SSCR0_SSE; + ssp_disable(dev); free_irq(dev->irq, dev); clk_disable(ssp->clk); ssp_free(ssp); -- cgit v1.2.3