diff options
Diffstat (limited to 'arch/arm/mach-pxa/pcm990-baseboard.c')
| -rw-r--r-- | arch/arm/mach-pxa/pcm990-baseboard.c | 83 |
1 files changed, 50 insertions, 33 deletions
diff --git a/arch/arm/mach-pxa/pcm990-baseboard.c b/arch/arm/mach-pxa/pcm990-baseboard.c index abab4e2b122c..cb723e84bc27 100644 --- a/arch/arm/mach-pxa/pcm990-baseboard.c +++ b/arch/arm/mach-pxa/pcm990-baseboard.c @@ -65,6 +65,18 @@ static unsigned long pcm990_pin_config[] __initdata = { GPIO31_AC97_SYNC, }; +static void __iomem *pcm990_cpld_base; + +static u8 pcm990_cpld_readb(unsigned int reg) +{ + return readb(pcm990_cpld_base + reg); +} + +static void pcm990_cpld_writeb(u8 value, unsigned int reg) +{ + writeb(value, pcm990_cpld_base + reg); +} + /* * pcm990_lcd_power - control power supply to the LCD * @on: 0 = switch off, 1 = switch on @@ -78,13 +90,13 @@ static void pcm990_lcd_power(int on, struct fb_var_screeninfo *var) /* enable LCD-Latches * power on LCD */ - __PCM990_CTRL_REG(PCM990_CTRL_PHYS + PCM990_CTRL_REG3) = - PCM990_CTRL_LCDPWR + PCM990_CTRL_LCDON; + pcm990_cpld_writeb(PCM990_CTRL_LCDPWR + PCM990_CTRL_LCDON, + PCM990_CTRL_REG3); } else { /* disable LCD-Latches * power off LCD */ - __PCM990_CTRL_REG(PCM990_CTRL_PHYS + PCM990_CTRL_REG3) = 0x00; + pcm990_cpld_writeb(0, PCM990_CTRL_REG3); } } #endif @@ -243,15 +255,26 @@ static unsigned long pcm990_irq_enabled; static void pcm990_mask_ack_irq(struct irq_data *d) { int pcm990_irq = (d->irq - PCM027_IRQ(0)); - PCM990_INTMSKENA = (pcm990_irq_enabled &= ~(1 << pcm990_irq)); + + pcm990_irq_enabled &= ~(1 << pcm990_irq); + + pcm990_cpld_writeb(pcm990_irq_enabled, PCM990_CTRL_INTMSKENA); } static void pcm990_unmask_irq(struct irq_data *d) { int pcm990_irq = (d->irq - PCM027_IRQ(0)); + u8 val; + /* the irq can be acknowledged only if deasserted, so it's done here */ - PCM990_INTSETCLR |= 1 << pcm990_irq; - PCM990_INTMSKENA = (pcm990_irq_enabled |= (1 << pcm990_irq)); + + pcm990_irq_enabled |= (1 << pcm990_irq); + + val = pcm990_cpld_readb(PCM990_CTRL_INTSETCLR); + val |= 1 << pcm990_irq; + pcm990_cpld_writeb(val, PCM990_CTRL_INTSETCLR); + + pcm990_cpld_writeb(pcm990_irq_enabled, PCM990_CTRL_INTMSKENA); } static struct irq_chip pcm990_irq_chip = { @@ -261,7 +284,10 @@ static struct irq_chip pcm990_irq_chip = { static void pcm990_irq_handler(unsigned int irq, struct irq_desc *desc) { - unsigned long pending = (~PCM990_INTSETCLR) & pcm990_irq_enabled; + unsigned long pending; + + pending = ~pcm990_cpld_readb(PCM990_CTRL_INTSETCLR); + pending &= pcm990_irq_enabled; do { /* clear our parent IRQ */ @@ -270,7 +296,8 @@ static void pcm990_irq_handler(unsigned int irq, struct irq_desc *desc) irq = PCM027_IRQ(0) + __ffs(pending); generic_handle_irq(irq); } - pending = (~PCM990_INTSETCLR) & pcm990_irq_enabled; + pending = ~pcm990_cpld_readb(PCM990_CTRL_INTSETCLR); + pending &= pcm990_irq_enabled; } while (pending); } @@ -285,8 +312,9 @@ static void __init pcm990_init_irq(void) set_irq_flags(irq, IRQF_VALID | IRQF_PROBE); } - PCM990_INTMSKENA = 0x00; /* disable all Interrupts */ - PCM990_INTSETCLR = 0xFF; + /* disable all Interrupts */ + pcm990_cpld_writeb(0x0, PCM990_CTRL_INTMSKENA); + pcm990_cpld_writeb(0xff, PCM990_CTRL_INTSETCLR); irq_set_chained_handler(PCM990_CTRL_INT_IRQ, pcm990_irq_handler); irq_set_irq_type(PCM990_CTRL_INT_IRQ, PCM990_CTRL_INT_IRQ_EDGE); @@ -309,13 +337,16 @@ static int pcm990_mci_init(struct device *dev, irq_handler_t mci_detect_int, static void pcm990_mci_setpower(struct device *dev, unsigned int vdd) { struct pxamci_platform_data *p_d = dev->platform_data; + u8 val; + + val = pcm990_cpld_readb(PCM990_CTRL_REG5); if ((1 << vdd) & p_d->ocr_mask) - __PCM990_CTRL_REG(PCM990_CTRL_PHYS + PCM990_CTRL_REG5) = - PCM990_CTRL_MMC2PWR; + val |= PCM990_CTRL_MMC2PWR; else - __PCM990_CTRL_REG(PCM990_CTRL_PHYS + PCM990_CTRL_REG5) = - ~PCM990_CTRL_MMC2PWR; + val &= ~PCM990_CTRL_MMC2PWR; + + pcm990_cpld_writeb(PCM990_CTRL_MMC2PWR, PCM990_CTRL_REG5); } static void pcm990_mci_exit(struct device *dev, void *data) @@ -481,23 +512,6 @@ static struct platform_device pcm990_camera[] = { #endif /* CONFIG_VIDEO_PXA27x ||CONFIG_VIDEO_PXA27x_MODULE */ /* - * enable generic access to the base board control CPLDs U6 and U7 - */ -static struct map_desc pcm990_io_desc[] __initdata = { - { - .virtual = PCM990_CTRL_BASE, - .pfn = __phys_to_pfn(PCM990_CTRL_PHYS), - .length = PCM990_CTRL_SIZE, - .type = MT_DEVICE /* CPLD */ - }, { - .virtual = PCM990_CF_PLD_BASE, - .pfn = __phys_to_pfn(PCM990_CF_PLD_PHYS), - .length = PCM990_CF_PLD_SIZE, - .type = MT_DEVICE /* CPLD */ - } -}; - -/* * system init for baseboard usage. Will be called by pcm027 init. * * Add platform devices present on this baseboard and init @@ -507,8 +521,11 @@ void __init pcm990_baseboard_init(void) { pxa2xx_mfp_config(ARRAY_AND_SIZE(pcm990_pin_config)); - /* register CPLD access */ - iotable_init(ARRAY_AND_SIZE(pcm990_io_desc)); + pcm990_cpld_base = ioremap(PCM990_CTRL_PHYS, PCM990_CTRL_SIZE); + if (!pcm990_cpld_base) { + pr_err("pcm990: failed to ioremap cpld\n"); + return; + } /* register CPLD's IRQ controller */ pcm990_init_irq(); |