Hello, On Friday, May 14, 2010 10:36 AM Kukjin Kim wrote: > From: Jongpill Lee <boyko.lee@xxxxxxxxxxx> > > Add support for external interrupts on v210. > > Signed-off-by: Jongpill Lee <boyko.lee@xxxxxxxxxxx> > Signed-off-by: Pannaga Bhushan <p.bhushan@xxxxxxxxxxx> > Signed-off-by: Kukjin Kim <kgene.kim@xxxxxxxxxxx> > --- > arch/arm/mach-s5pv210/Kconfig | 1 + > arch/arm/mach-s5pv210/include/mach/irqs.h | 26 +-- > arch/arm/mach-s5pv210/include/mach/regs-gpio.h | 46 +++++ > arch/arm/plat-s5p/Kconfig | 5 + > arch/arm/plat-s5p/Makefile | 1 + > arch/arm/plat-s5p/irq-eint.c | 216 > ++++++++++++++++++++++++ > 6 files changed, 277 insertions(+), 18 deletions(-) > create mode 100644 arch/arm/mach-s5pv210/include/mach/regs-gpio.h > create mode 100644 arch/arm/plat-s5p/irq-eint.c > ... > diff --git a/arch/arm/plat-s5p/irq-eint.c b/arch/arm/plat-s5p/irq-eint.c > new file mode 100644 > index 0000000..040e271 > --- /dev/null > +++ b/arch/arm/plat-s5p/irq-eint.c > @@ -0,0 +1,216 @@ > +/* linux/arch/arm/plat-s5p/irq-eint.c > + * > + * Copyright (c) 2010 Samsung Electronics Co., Ltd. > + * http://www.samsung.com > + * > + * S5P - IRQ EINT support > + * > + * This program is free software; you can redistribute it and/or modify > + * it under the terms of the GNU General Public License version 2 as > + * published by the Free Software Foundation. > +*/ > + > +#include <linux/kernel.h> > +#include <linux/interrupt.h> > +#include <linux/irq.h> > +#include <linux/io.h> > +#include <linux/sysdev.h> > +#include <linux/gpio.h> > + > +#include <asm/bitops.h> > +#include <asm/hardware/vic.h> > + > +#include <plat/regs-irqtype.h> > + > +#include <mach/map.h> > +#include <plat/cpu.h> > +#include <plat/pm.h> > + > +#include <plat/gpio-cfg.h> > +#include <mach/regs-gpio.h> > + > +static inline void s5p_irq_eint_mask(unsigned int irq) > +{ > + u32 mask; > + > + mask = __raw_readl(S5P_EINT_MASK(eint_mask_reg(irq))); > + mask |= eint_irq_to_bit(irq); > + __raw_writel(mask, S5P_EINT_MASK(eint_mask_reg(irq))); > +} > + > +static void s5p_irq_eint_unmask(unsigned int irq) > +{ > + u32 mask; > + > + mask = __raw_readl(S5P_EINT_MASK(eint_mask_reg(irq))); > + mask &= ~(eint_irq_to_bit(irq)); > + __raw_writel(mask, S5P_EINT_MASK(eint_mask_reg(irq))); > +} > + > +static inline void s5p_irq_eint_ack(unsigned int irq) > +{ > + __raw_writel(eint_irq_to_bit(irq), S5P_EINT_PEND(eint_pend_reg(irq))); > +} > + > +static void s5p_irq_eint_maskack(unsigned int irq) > +{ > + /* compiler should in-line these */ > + s5p_irq_eint_mask(irq); > + s5p_irq_eint_ack(irq); > +} > + > +static int s5p_irq_eint_set_type(unsigned int irq, unsigned int type) > +{ > + int offs = eint_offset(irq); > + int shift; > + u32 ctrl, mask; > + u32 newvalue = 0; > + > + switch (type) { > + case IRQ_TYPE_NONE: > + printk(KERN_WARNING "No edge setting!\n"); > + break; > + > + case IRQ_TYPE_EDGE_RISING: > + newvalue = S5P_EXTINT_RISEEDGE; > + break; > + > + case IRQ_TYPE_EDGE_FALLING: > + newvalue = S5P_EXTINT_RISEEDGE; > + break; > + > + case IRQ_TYPE_EDGE_BOTH: > + newvalue = S5P_EXTINT_BOTHEDGE; > + break; > + > + case IRQ_TYPE_LEVEL_LOW: > + newvalue = S5P_EXTINT_LOWLEV; > + break; > + > + case IRQ_TYPE_LEVEL_HIGH: > + newvalue = S5P_EXTINT_HILEV; > + break; > + > + default: > + printk(KERN_ERR "No such irq type %d", type); > + return -EINVAL; > + } > + > + shift = (offs & 0x7) * 4; > + mask = 0x7 << shift; > + > + ctrl = __raw_readl(S5P_EINT_CON(eint_conf_reg(irq))); > + ctrl &= ~mask; > + ctrl |= newvalue << shift; > + __raw_writel(ctrl, S5P_EINT_CON(eint_conf_reg(irq))); > + > + if ((0 <= offs) && (offs < 8)) > + s3c_gpio_cfgpin(S5PV210_GPH0(offs & 0x7), EINT_MODE); > + > + else if ((8 <= offs) && (offs < 16)) > + s3c_gpio_cfgpin(S5PV210_GPH1(offs & 0x7), EINT_MODE); > + > + else if ((16 <= offs) && (offs < 24)) > + s3c_gpio_cfgpin(S5PV210_GPH2(offs & 0x7), EINT_MODE); > + > + else if ((24 <= offs) && (offs < 32)) > + s3c_gpio_cfgpin(S5PV210_GPH3(offs & 0x7), EINT_MODE); When the code is put into plat-s5p directory then please don't use S5PV210_GPH3 defines. If makes it hardly reusable with other SoCs. > ... Best regards -- Marek Szyprowski Samsung Poland R&D Center -- To unsubscribe from this list: send the line "unsubscribe linux-samsung-soc" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
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