diff options
author | Linus Torvalds <torvalds@linux-foundation.org> | 2012-05-22 13:32:53 -0700 |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2012-05-22 13:32:53 -0700 |
commit | f6a26ae7699416d86bea8cb68ce413571e9cab3c (patch) | |
tree | e91b7a7c7513151fe583721f7435cc9f5cdc4f42 /arch/arm/mach-pxa/pcm990-baseboard.c | |
parent | cdd3a354a05b0c33fe33ab11a0fb0838396cad19 (diff) | |
parent | 48a5765e5104f1afd22c75c5030af3a6cf24b4c3 (diff) |
Merge tag 'boards' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc
Pull arm-soc board specific changes from Olof Johansson:
"While we generally attempt to get rid of board specific files and
replace them with device tree based descriptions, a lot of platforms
have not come that far:
In shmobile, we add two new board files because their recently started
effort to add DT support has not proceeded enough to use it for all of
the important hardware.
In Kirkwood, we are adding support for new boards with a combination
of DT and board file contents in multiple cases.
pxa/mmp and imx are extending support for existing board files but not
adding new ones."
Fix up trivial conflicts in arch/arm/mach-{mmp/ttc_dkb.c,shmobile/{Kconfig,Makefile}}
* tag 'boards' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (94 commits)
ARM: shmobile: fix smp build
ARM: kirkwood: Add support for RaidSonic IB-NAS6210/6220 using devicetree
kirkwood: Add iconnect support
orion/kirkwood: create a generic function for gpio led blinking
kirkwood/orion: fix orion_gpio_set_blink
ARM: kirkwood: Define DNS-320/DNS-325 NAND in fdt
kirkwood: Allow nand to be configured via. devicetree
mtd: Add orion_nand devicetree bindings
ARM: kirkwood: Basic support for DNS-320 and DNS-325
ARM: mach-shmobile: Use DT_MACHINE for armadillo 800 eva
ARM: mach-shmobile: Use DT_MACHINE for KZM9G
ARM: pxa: hx4700: Add Synaptics NavPoint touchpad
ARM: pxa: Use REGULATOR_SUPPLY macro
ARM: mach-shmobile: kzm9g: enable SMP boot
ARM: mach-shmobile: kzm9g: defconfig update
ARM: mach-shmobile: kzm9g: add PCF8757 gpio-key
ARM: mach-shmobile: kzm9g: add SDHI support
ARM: mach-shmobile: kzm9g: add MMCIF support
ARM: mach-shmobile: kzm9g: correct screen direction
ARM: mach-shmobile: sh73a0.h: add GPIO_NR
...
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 abab4e2b122..cb723e84bc2 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(); |