diff options
Diffstat (limited to 'target/linux/ath79/patches-5.4/0036-MIPS-ath79-remove-irq-code-from-pci.patch')
| -rw-r--r-- | target/linux/ath79/patches-5.4/0036-MIPS-ath79-remove-irq-code-from-pci.patch | 139 |
1 files changed, 139 insertions, 0 deletions
diff --git a/target/linux/ath79/patches-5.4/0036-MIPS-ath79-remove-irq-code-from-pci.patch b/target/linux/ath79/patches-5.4/0036-MIPS-ath79-remove-irq-code-from-pci.patch new file mode 100644 index 0000000000..80fcd0a7f5 --- /dev/null +++ b/target/linux/ath79/patches-5.4/0036-MIPS-ath79-remove-irq-code-from-pci.patch @@ -0,0 +1,139 @@ +--- a/arch/mips/pci/pci-ar71xx.c ++++ b/arch/mips/pci/pci-ar71xx.c +@@ -51,11 +51,9 @@ + struct ar71xx_pci_controller { + struct device_node *np; + void __iomem *cfg_base; +- int irq; + struct pci_controller pci_ctrl; + struct resource io_res; + struct resource mem_res; +- struct irq_domain *domain; + }; + + /* Byte lane enable bits */ +@@ -227,104 +225,6 @@ static struct pci_ops ar71xx_pci_ops = { + .write = ar71xx_pci_write_config, + }; + +-static void ar71xx_pci_irq_handler(struct irq_desc *desc) +-{ +- void __iomem *base = ath79_reset_base; +- struct irq_chip *chip = irq_desc_get_chip(desc); +- struct ar71xx_pci_controller *apc = irq_desc_get_handler_data(desc); +- u32 pending; +- +- chained_irq_enter(chip, desc); +- pending = __raw_readl(base + AR71XX_RESET_REG_PCI_INT_STATUS) & +- __raw_readl(base + AR71XX_RESET_REG_PCI_INT_ENABLE); +- +- if (pending & AR71XX_PCI_INT_DEV0) +- generic_handle_irq(irq_linear_revmap(apc->domain, 1)); +- +- else if (pending & AR71XX_PCI_INT_DEV1) +- generic_handle_irq(irq_linear_revmap(apc->domain, 2)); +- +- else if (pending & AR71XX_PCI_INT_DEV2) +- generic_handle_irq(irq_linear_revmap(apc->domain, 3)); +- +- else if (pending & AR71XX_PCI_INT_CORE) +- generic_handle_irq(irq_linear_revmap(apc->domain, 4)); +- +- else +- spurious_interrupt(); +- chained_irq_exit(chip, desc); +-} +- +-static void ar71xx_pci_irq_unmask(struct irq_data *d) +-{ +- struct ar71xx_pci_controller *apc; +- unsigned int irq; +- void __iomem *base = ath79_reset_base; +- u32 t; +- +- apc = irq_data_get_irq_chip_data(d); +- irq = irq_linear_revmap(apc->domain, d->irq); +- +- t = __raw_readl(base + AR71XX_RESET_REG_PCI_INT_ENABLE); +- __raw_writel(t | (1 << irq), base + AR71XX_RESET_REG_PCI_INT_ENABLE); +- +- /* flush write */ +- __raw_readl(base + AR71XX_RESET_REG_PCI_INT_ENABLE); +-} +- +-static void ar71xx_pci_irq_mask(struct irq_data *d) +-{ +- struct ar71xx_pci_controller *apc; +- unsigned int irq; +- void __iomem *base = ath79_reset_base; +- u32 t; +- +- apc = irq_data_get_irq_chip_data(d); +- irq = irq_linear_revmap(apc->domain, d->irq); +- +- t = __raw_readl(base + AR71XX_RESET_REG_PCI_INT_ENABLE); +- __raw_writel(t & ~(1 << irq), base + AR71XX_RESET_REG_PCI_INT_ENABLE); +- +- /* flush write */ +- __raw_readl(base + AR71XX_RESET_REG_PCI_INT_ENABLE); +-} +- +-static struct irq_chip ar71xx_pci_irq_chip = { +- .name = "AR71XX PCI", +- .irq_mask = ar71xx_pci_irq_mask, +- .irq_unmask = ar71xx_pci_irq_unmask, +- .irq_mask_ack = ar71xx_pci_irq_mask, +-}; +- +-static int ar71xx_pci_irq_map(struct irq_domain *d, +- unsigned int irq, irq_hw_number_t hw) +-{ +- struct ar71xx_pci_controller *apc = d->host_data; +- +- irq_set_chip_and_handler(irq, &ar71xx_pci_irq_chip, handle_level_irq); +- irq_set_chip_data(irq, apc); +- +- return 0; +-} +- +-static const struct irq_domain_ops ar71xx_pci_domain_ops = { +- .xlate = irq_domain_xlate_onecell, +- .map = ar71xx_pci_irq_map, +-}; +- +-static void ar71xx_pci_irq_init(struct ar71xx_pci_controller *apc) +-{ +- void __iomem *base = ath79_reset_base; +- +- __raw_writel(0, base + AR71XX_RESET_REG_PCI_INT_ENABLE); +- __raw_writel(0, base + AR71XX_RESET_REG_PCI_INT_STATUS); +- +- apc->domain = irq_domain_add_linear(apc->np, AR71XX_PCI_IRQ_COUNT, +- &ar71xx_pci_domain_ops, apc); +- irq_set_chained_handler_and_data(apc->irq, ar71xx_pci_irq_handler, +- apc); +-} +- + static void ar71xx_pci_reset(void) + { + ath79_device_reset_set(AR71XX_RESET_PCI_BUS | AR71XX_RESET_PCI_CORE); +@@ -358,10 +258,6 @@ static int ar71xx_pci_probe(struct platf + if (IS_ERR(apc->cfg_base)) + return PTR_ERR(apc->cfg_base); + +- apc->irq = platform_get_irq(pdev, 0); +- if (apc->irq < 0) +- return -EINVAL; +- + ar71xx_pci_reset(); + + /* setup COMMAND register */ +@@ -372,8 +268,6 @@ static int ar71xx_pci_probe(struct platf + /* clear bus errors */ + ar71xx_pci_check_error(apc, 1); + +- ar71xx_pci_irq_init(apc); +- + apc->np = pdev->dev.of_node; + apc->pci_ctrl.pci_ops = &ar71xx_pci_ops; + apc->pci_ctrl.mem_resource = &apc->mem_res; |