ARM: S3C24XX: transform s3c2416 irqs into new structure
Share the common irq code by simply defining a correct mapping declaration for the s3c2416. Signed-off-by: Heiko Stuebner <heiko@sntech.de> Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>hifive-unleashed-5.1
Heiko Stuebner
Kukjin Kim
parent
4a282dd3b6
commit
20f6c781c7
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@ -352,7 +352,8 @@ static int s3c24xx_irq_map(struct irq_domain *h, unsigned int virq,
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handle_edge_irq);
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break;
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case S3C_IRQTYPE_EDGE:
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if (irq_data->parent_irq)
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if (irq_data->parent_irq ||
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intc->reg_pending == S3C2416_SRCPND2)
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irq_set_chip_and_handler(virq, &s3c_irq_level_chip,
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handle_edge_irq);
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else
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@ -628,273 +629,104 @@ void __init s3c24xx_init_irq(void)
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}
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#ifdef CONFIG_CPU_S3C2416
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#define INTMSK(start, end) ((1 << ((end) + 1 - (start))) - 1)
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static inline void s3c2416_irq_demux(unsigned int irq, unsigned int len)
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{
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unsigned int subsrc, submsk;
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unsigned int end;
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/* read the current pending interrupts, and the mask
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* for what it is available */
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subsrc = __raw_readl(S3C2410_SUBSRCPND);
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submsk = __raw_readl(S3C2410_INTSUBMSK);
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subsrc &= ~submsk;
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subsrc >>= (irq - S3C2410_IRQSUB(0));
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subsrc &= (1 << len)-1;
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end = len + irq;
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for (; irq < end && subsrc; irq++) {
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if (subsrc & 1)
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generic_handle_irq(irq);
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subsrc >>= 1;
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}
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}
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/* WDT/AC97 sub interrupts */
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static void s3c2416_irq_demux_wdtac97(unsigned int irq, struct irq_desc *desc)
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{
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s3c2416_irq_demux(IRQ_S3C2443_WDT, 4);
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}
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#define INTMSK_WDTAC97 (1UL << (IRQ_WDT - IRQ_EINT0))
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#define SUBMSK_WDTAC97 INTMSK(IRQ_S3C2443_WDT, IRQ_S3C2443_AC97)
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static void s3c2416_irq_wdtac97_mask(struct irq_data *data)
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{
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s3c_irqsub_mask(data->irq, INTMSK_WDTAC97, SUBMSK_WDTAC97);
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}
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static void s3c2416_irq_wdtac97_unmask(struct irq_data *data)
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{
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s3c_irqsub_unmask(data->irq, INTMSK_WDTAC97);
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}
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static void s3c2416_irq_wdtac97_ack(struct irq_data *data)
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{
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s3c_irqsub_maskack(data->irq, INTMSK_WDTAC97, SUBMSK_WDTAC97);
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}
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static struct irq_chip s3c2416_irq_wdtac97 = {
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.irq_mask = s3c2416_irq_wdtac97_mask,
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.irq_unmask = s3c2416_irq_wdtac97_unmask,
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.irq_ack = s3c2416_irq_wdtac97_ack,
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static struct s3c_irq_data init_s3c2416base[32] = {
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{ .type = S3C_IRQTYPE_EINT, }, /* EINT0 */
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{ .type = S3C_IRQTYPE_EINT, }, /* EINT1 */
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{ .type = S3C_IRQTYPE_EINT, }, /* EINT2 */
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{ .type = S3C_IRQTYPE_EINT, }, /* EINT3 */
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{ .type = S3C_IRQTYPE_LEVEL, }, /* EINT4to7 */
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{ .type = S3C_IRQTYPE_LEVEL, }, /* EINT8to23 */
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{ .type = S3C_IRQTYPE_NONE, }, /* reserved */
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{ .type = S3C_IRQTYPE_EDGE, }, /* nBATT_FLT */
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{ .type = S3C_IRQTYPE_EDGE, }, /* TICK */
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{ .type = S3C_IRQTYPE_LEVEL, }, /* WDT/AC97 */
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{ .type = S3C_IRQTYPE_EDGE, }, /* TIMER0 */
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{ .type = S3C_IRQTYPE_EDGE, }, /* TIMER1 */
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{ .type = S3C_IRQTYPE_EDGE, }, /* TIMER2 */
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{ .type = S3C_IRQTYPE_EDGE, }, /* TIMER3 */
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{ .type = S3C_IRQTYPE_EDGE, }, /* TIMER4 */
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{ .type = S3C_IRQTYPE_LEVEL, }, /* UART2 */
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{ .type = S3C_IRQTYPE_LEVEL, }, /* LCD */
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{ .type = S3C_IRQTYPE_LEVEL, }, /* DMA */
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{ .type = S3C_IRQTYPE_LEVEL, }, /* UART3 */
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{ .type = S3C_IRQTYPE_NONE, }, /* reserved */
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{ .type = S3C_IRQTYPE_EDGE, }, /* SDI1 */
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{ .type = S3C_IRQTYPE_EDGE, }, /* SDI0 */
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{ .type = S3C_IRQTYPE_EDGE, }, /* SPI0 */
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{ .type = S3C_IRQTYPE_LEVEL, }, /* UART1 */
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{ .type = S3C_IRQTYPE_EDGE, }, /* NAND */
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{ .type = S3C_IRQTYPE_EDGE, }, /* USBD */
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{ .type = S3C_IRQTYPE_EDGE, }, /* USBH */
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{ .type = S3C_IRQTYPE_EDGE, }, /* IIC */
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{ .type = S3C_IRQTYPE_LEVEL, }, /* UART0 */
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{ .type = S3C_IRQTYPE_NONE, },
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{ .type = S3C_IRQTYPE_EDGE, }, /* RTC */
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{ .type = S3C_IRQTYPE_LEVEL, }, /* ADCPARENT */
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};
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/* LCD sub interrupts */
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static void s3c2416_irq_demux_lcd(unsigned int irq, struct irq_desc *desc)
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{
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s3c2416_irq_demux(IRQ_S3C2443_LCD1, 4);
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}
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#define INTMSK_LCD (1UL << (IRQ_LCD - IRQ_EINT0))
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#define SUBMSK_LCD INTMSK(IRQ_S3C2443_LCD1, IRQ_S3C2443_LCD4)
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static void s3c2416_irq_lcd_mask(struct irq_data *data)
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{
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s3c_irqsub_mask(data->irq, INTMSK_LCD, SUBMSK_LCD);
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}
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static void s3c2416_irq_lcd_unmask(struct irq_data *data)
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{
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s3c_irqsub_unmask(data->irq, INTMSK_LCD);
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}
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static void s3c2416_irq_lcd_ack(struct irq_data *data)
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{
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s3c_irqsub_maskack(data->irq, INTMSK_LCD, SUBMSK_LCD);
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}
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static struct irq_chip s3c2416_irq_lcd = {
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.irq_mask = s3c2416_irq_lcd_mask,
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.irq_unmask = s3c2416_irq_lcd_unmask,
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.irq_ack = s3c2416_irq_lcd_ack,
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static struct s3c_irq_data init_s3c2416subint[32] = {
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{ .type = S3C_IRQTYPE_LEVEL, .parent_irq = 28 }, /* UART0-RX */
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{ .type = S3C_IRQTYPE_LEVEL, .parent_irq = 28 }, /* UART0-TX */
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{ .type = S3C_IRQTYPE_LEVEL, .parent_irq = 28 }, /* UART0-ERR */
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{ .type = S3C_IRQTYPE_LEVEL, .parent_irq = 23 }, /* UART1-RX */
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{ .type = S3C_IRQTYPE_LEVEL, .parent_irq = 23 }, /* UART1-TX */
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{ .type = S3C_IRQTYPE_LEVEL, .parent_irq = 23 }, /* UART1-ERR */
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{ .type = S3C_IRQTYPE_LEVEL, .parent_irq = 15 }, /* UART2-RX */
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{ .type = S3C_IRQTYPE_LEVEL, .parent_irq = 15 }, /* UART2-TX */
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{ .type = S3C_IRQTYPE_LEVEL, .parent_irq = 15 }, /* UART2-ERR */
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{ .type = S3C_IRQTYPE_EDGE, .parent_irq = 31 }, /* TC */
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{ .type = S3C_IRQTYPE_EDGE, .parent_irq = 31 }, /* ADC */
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{ .type = S3C_IRQTYPE_NONE }, /* reserved */
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{ .type = S3C_IRQTYPE_NONE }, /* reserved */
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{ .type = S3C_IRQTYPE_NONE }, /* reserved */
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{ .type = S3C_IRQTYPE_NONE }, /* reserved */
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{ .type = S3C_IRQTYPE_LEVEL, .parent_irq = 16 }, /* LCD2 */
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{ .type = S3C_IRQTYPE_LEVEL, .parent_irq = 16 }, /* LCD3 */
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{ .type = S3C_IRQTYPE_LEVEL, .parent_irq = 16 }, /* LCD4 */
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{ .type = S3C_IRQTYPE_LEVEL, .parent_irq = 17 }, /* DMA0 */
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{ .type = S3C_IRQTYPE_LEVEL, .parent_irq = 17 }, /* DMA1 */
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{ .type = S3C_IRQTYPE_LEVEL, .parent_irq = 17 }, /* DMA2 */
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{ .type = S3C_IRQTYPE_LEVEL, .parent_irq = 17 }, /* DMA3 */
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{ .type = S3C_IRQTYPE_LEVEL, .parent_irq = 17 }, /* DMA4 */
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{ .type = S3C_IRQTYPE_LEVEL, .parent_irq = 17 }, /* DMA5 */
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{ .type = S3C_IRQTYPE_LEVEL, .parent_irq = 18 }, /* UART3-RX */
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{ .type = S3C_IRQTYPE_LEVEL, .parent_irq = 18 }, /* UART3-TX */
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{ .type = S3C_IRQTYPE_LEVEL, .parent_irq = 18 }, /* UART3-ERR */
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{ .type = S3C_IRQTYPE_LEVEL, .parent_irq = 9 }, /* WDT */
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{ .type = S3C_IRQTYPE_LEVEL, .parent_irq = 9 }, /* AC97 */
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};
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/* DMA sub interrupts */
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static void s3c2416_irq_demux_dma(unsigned int irq, struct irq_desc *desc)
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{
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s3c2416_irq_demux(IRQ_S3C2443_DMA0, 6);
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}
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#define INTMSK_DMA (1UL << (IRQ_S3C2443_DMA - IRQ_EINT0))
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#define SUBMSK_DMA INTMSK(IRQ_S3C2443_DMA0, IRQ_S3C2443_DMA5)
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static void s3c2416_irq_dma_mask(struct irq_data *data)
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{
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s3c_irqsub_mask(data->irq, INTMSK_DMA, SUBMSK_DMA);
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}
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static void s3c2416_irq_dma_unmask(struct irq_data *data)
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{
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s3c_irqsub_unmask(data->irq, INTMSK_DMA);
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}
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static void s3c2416_irq_dma_ack(struct irq_data *data)
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{
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s3c_irqsub_maskack(data->irq, INTMSK_DMA, SUBMSK_DMA);
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}
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static struct irq_chip s3c2416_irq_dma = {
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.irq_mask = s3c2416_irq_dma_mask,
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.irq_unmask = s3c2416_irq_dma_unmask,
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.irq_ack = s3c2416_irq_dma_ack,
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static struct s3c_irq_data init_s3c2416_second[32] = {
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{ .type = S3C_IRQTYPE_EDGE }, /* 2D */
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{ .type = S3C_IRQTYPE_EDGE }, /* IIC1 */
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{ .type = S3C_IRQTYPE_NONE }, /* reserved */
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{ .type = S3C_IRQTYPE_NONE }, /* reserved */
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{ .type = S3C_IRQTYPE_EDGE }, /* PCM0 */
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{ .type = S3C_IRQTYPE_EDGE }, /* PCM1 */
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{ .type = S3C_IRQTYPE_EDGE }, /* I2S0 */
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{ .type = S3C_IRQTYPE_EDGE }, /* I2S1 */
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};
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/* UART3 sub interrupts */
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static void s3c2416_irq_demux_uart3(unsigned int irq, struct irq_desc *desc)
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{
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s3c2416_irq_demux(IRQ_S3C2443_RX3, 3);
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}
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#define INTMSK_UART3 (1UL << (IRQ_S3C2443_UART3 - IRQ_EINT0))
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#define SUBMSK_UART3 (0x7 << (IRQ_S3C2443_RX3 - S3C2410_IRQSUB(0)))
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static void s3c2416_irq_uart3_mask(struct irq_data *data)
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{
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s3c_irqsub_mask(data->irq, INTMSK_UART3, SUBMSK_UART3);
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}
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static void s3c2416_irq_uart3_unmask(struct irq_data *data)
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{
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s3c_irqsub_unmask(data->irq, INTMSK_UART3);
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}
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static void s3c2416_irq_uart3_ack(struct irq_data *data)
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{
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s3c_irqsub_maskack(data->irq, INTMSK_UART3, SUBMSK_UART3);
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}
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static struct irq_chip s3c2416_irq_uart3 = {
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.irq_mask = s3c2416_irq_uart3_mask,
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.irq_unmask = s3c2416_irq_uart3_unmask,
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.irq_ack = s3c2416_irq_uart3_ack,
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};
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/* second interrupt register */
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static inline void s3c2416_irq_ack_second(struct irq_data *data)
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{
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unsigned long bitval = 1UL << (data->irq - IRQ_S3C2416_2D);
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__raw_writel(bitval, S3C2416_SRCPND2);
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__raw_writel(bitval, S3C2416_INTPND2);
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}
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static void s3c2416_irq_mask_second(struct irq_data *data)
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{
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unsigned long bitval = 1UL << (data->irq - IRQ_S3C2416_2D);
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unsigned long mask;
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mask = __raw_readl(S3C2416_INTMSK2);
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mask |= bitval;
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__raw_writel(mask, S3C2416_INTMSK2);
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}
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static void s3c2416_irq_unmask_second(struct irq_data *data)
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{
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unsigned long bitval = 1UL << (data->irq - IRQ_S3C2416_2D);
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unsigned long mask;
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mask = __raw_readl(S3C2416_INTMSK2);
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mask &= ~bitval;
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__raw_writel(mask, S3C2416_INTMSK2);
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}
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static struct irq_chip s3c2416_irq_second = {
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.irq_ack = s3c2416_irq_ack_second,
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.irq_mask = s3c2416_irq_mask_second,
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.irq_unmask = s3c2416_irq_unmask_second,
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};
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/* IRQ initialisation code */
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static int s3c2416_add_sub(unsigned int base,
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void (*demux)(unsigned int,
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struct irq_desc *),
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struct irq_chip *chip,
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unsigned int start, unsigned int end)
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{
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unsigned int irqno;
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irq_set_chip_and_handler(base, &s3c_irq_level_chip, handle_level_irq);
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irq_set_chained_handler(base, demux);
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for (irqno = start; irqno <= end; irqno++) {
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irq_set_chip_and_handler(irqno, chip, handle_level_irq);
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set_irq_flags(irqno, IRQF_VALID);
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}
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return 0;
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}
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static void s3c2416_irq_add_second(void)
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{
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unsigned long pend;
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unsigned long last;
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int irqno;
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int i;
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/* first, clear all interrupts pending... */
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last = 0;
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for (i = 0; i < 4; i++) {
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pend = __raw_readl(S3C2416_INTPND2);
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if (pend == 0 || pend == last)
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break;
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__raw_writel(pend, S3C2416_SRCPND2);
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__raw_writel(pend, S3C2416_INTPND2);
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printk(KERN_INFO "irq: clearing pending status %08x\n",
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(int)pend);
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last = pend;
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}
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for (irqno = IRQ_S3C2416_2D; irqno <= IRQ_S3C2416_I2S1; irqno++) {
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switch (irqno) {
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case IRQ_S3C2416_RESERVED2:
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case IRQ_S3C2416_RESERVED3:
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/* no IRQ here */
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break;
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default:
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irq_set_chip_and_handler(irqno, &s3c2416_irq_second,
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handle_edge_irq);
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set_irq_flags(irqno, IRQF_VALID);
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}
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}
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}
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void __init s3c2416_init_irq(void)
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{
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struct s3c_irq_intc *main_intc;
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pr_info("S3C2416: IRQ Support\n");
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s3c24xx_init_irq();
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#ifdef CONFIG_FIQ
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init_FIQ(FIQ_START);
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#endif
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s3c2416_add_sub(IRQ_LCD, s3c2416_irq_demux_lcd, &s3c2416_irq_lcd,
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IRQ_S3C2443_LCD2, IRQ_S3C2443_LCD4);
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main_intc = s3c24xx_init_intc(NULL, &init_s3c2416base[0], NULL, 0x4a000000);
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if (IS_ERR(main_intc)) {
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pr_err("irq: could not create main interrupt controller\n");
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return;
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}
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s3c2416_add_sub(IRQ_S3C2443_DMA, s3c2416_irq_demux_dma,
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&s3c2416_irq_dma, IRQ_S3C2443_DMA0, IRQ_S3C2443_DMA5);
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s3c24xx_init_intc(NULL, &init_eint[0], main_intc, 0x560000a4);
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s3c24xx_init_intc(NULL, &init_s3c2416subint[0], main_intc, 0x4a000018);
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s3c2416_add_sub(IRQ_S3C2443_UART3, s3c2416_irq_demux_uart3,
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&s3c2416_irq_uart3,
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IRQ_S3C2443_RX3, IRQ_S3C2443_ERR3);
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s3c2416_add_sub(IRQ_WDT, s3c2416_irq_demux_wdtac97,
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&s3c2416_irq_wdtac97,
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IRQ_S3C2443_WDT, IRQ_S3C2443_AC97);
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s3c2416_irq_add_second();
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s3c24xx_init_intc(NULL, &init_s3c2416_second[0], NULL, 0x4a000040);
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}
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#endif
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