diff options
Diffstat (limited to 'target/linux/ath79/patches-5.10/0018-MIPS-pci-ar71xx-convert-to-OF.patch')
| -rw-r--r-- | target/linux/ath79/patches-5.10/0018-MIPS-pci-ar71xx-convert-to-OF.patch | 202 |
1 files changed, 0 insertions, 202 deletions
diff --git a/target/linux/ath79/patches-5.10/0018-MIPS-pci-ar71xx-convert-to-OF.patch b/target/linux/ath79/patches-5.10/0018-MIPS-pci-ar71xx-convert-to-OF.patch deleted file mode 100644 index e600a4f0d9..0000000000 --- a/target/linux/ath79/patches-5.10/0018-MIPS-pci-ar71xx-convert-to-OF.patch +++ /dev/null @@ -1,202 +0,0 @@ -From 1855ab6b1d27f5b38a648baf57ff6a534afec26d Mon Sep 17 00:00:00 2001 -From: John Crispin <john@phrozen.org> -Date: Sat, 23 Jun 2018 15:07:23 +0200 -Subject: [PATCH 18/33] MIPS: pci-ar71xx: convert to OF - -With the ath79 target getting converted to pure OF, we can drop all the -platform data code and add the missing OF bits to the driver. We also add -a irq domain for the PCI/e controllers cascade, thus making it usable from -dts files. - -Signed-off-by: John Crispin <john@phrozen.org> ---- - arch/mips/pci/pci-ar71xx.c | 82 +++++++++++++++++++++++----------------------- - 1 file changed, 41 insertions(+), 41 deletions(-) - ---- a/arch/mips/pci/pci-ar71xx.c -+++ b/arch/mips/pci/pci-ar71xx.c -@@ -15,8 +15,11 @@ - #include <linux/pci.h> - #include <linux/pci_regs.h> - #include <linux/interrupt.h> -+#include <linux/irqchip/chained_irq.h> - #include <linux/init.h> - #include <linux/platform_device.h> -+#include <linux/of_irq.h> -+#include <linux/of_pci.h> - - #include <asm/mach-ath79/ar71xx_regs.h> - #include <asm/mach-ath79/ath79.h> -@@ -46,12 +49,13 @@ - #define AR71XX_PCI_IRQ_COUNT 5 - - struct ar71xx_pci_controller { -+ struct device_node *np; - void __iomem *cfg_base; - int irq; -- int irq_base; - struct pci_controller pci_ctrl; - struct resource io_res; - struct resource mem_res; -+ struct irq_domain *domain; - }; - - /* Byte lane enable bits */ -@@ -225,29 +229,30 @@ static struct pci_ops ar71xx_pci_ops = { - - static void ar71xx_pci_irq_handler(struct irq_desc *desc) - { -- struct ar71xx_pci_controller *apc; - 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; - -- apc = irq_desc_get_handler_data(desc); -- -+ 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(apc->irq_base + 0); -+ generic_handle_irq(irq_linear_revmap(apc->domain, 1)); - - else if (pending & AR71XX_PCI_INT_DEV1) -- generic_handle_irq(apc->irq_base + 1); -+ generic_handle_irq(irq_linear_revmap(apc->domain, 2)); - - else if (pending & AR71XX_PCI_INT_DEV2) -- generic_handle_irq(apc->irq_base + 2); -+ generic_handle_irq(irq_linear_revmap(apc->domain, 3)); - - else if (pending & AR71XX_PCI_INT_CORE) -- generic_handle_irq(apc->irq_base + 4); -+ 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) -@@ -258,7 +263,7 @@ static void ar71xx_pci_irq_unmask(struct - u32 t; - - apc = irq_data_get_irq_chip_data(d); -- irq = d->irq - apc->irq_base; -+ 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); -@@ -275,7 +280,7 @@ static void ar71xx_pci_irq_mask(struct i - u32 t; - - apc = irq_data_get_irq_chip_data(d); -- irq = d->irq - apc->irq_base; -+ 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); -@@ -291,24 +296,31 @@ static struct irq_chip ar71xx_pci_irq_ch - .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; -- int i; - - __raw_writel(0, base + AR71XX_RESET_REG_PCI_INT_ENABLE); - __raw_writel(0, base + AR71XX_RESET_REG_PCI_INT_STATUS); - -- BUILD_BUG_ON(ATH79_PCI_IRQ_COUNT < AR71XX_PCI_IRQ_COUNT); -- -- apc->irq_base = ATH79_PCI_IRQ_BASE; -- for (i = apc->irq_base; -- i < apc->irq_base + AR71XX_PCI_IRQ_COUNT; i++) { -- irq_set_chip_and_handler(i, &ar71xx_pci_irq_chip, -- handle_level_irq); -- irq_set_chip_data(i, apc); -- } -- -+ 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); - } -@@ -325,6 +337,11 @@ static void ar71xx_pci_reset(void) - mdelay(100); - } - -+static const struct of_device_id ar71xx_pci_ids[] = { -+ { .compatible = "qca,ar7100-pci" }, -+ {}, -+}; -+ - static int ar71xx_pci_probe(struct platform_device *pdev) - { - struct ar71xx_pci_controller *apc; -@@ -345,26 +362,6 @@ static int ar71xx_pci_probe(struct platf - if (apc->irq < 0) - return -EINVAL; - -- res = platform_get_resource_byname(pdev, IORESOURCE_IO, "io_base"); -- if (!res) -- return -EINVAL; -- -- apc->io_res.parent = res; -- apc->io_res.name = "PCI IO space"; -- apc->io_res.start = res->start; -- apc->io_res.end = res->end; -- apc->io_res.flags = IORESOURCE_IO; -- -- res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "mem_base"); -- if (!res) -- return -EINVAL; -- -- apc->mem_res.parent = res; -- apc->mem_res.name = "PCI memory space"; -- apc->mem_res.start = res->start; -- apc->mem_res.end = res->end; -- apc->mem_res.flags = IORESOURCE_MEM; -- - ar71xx_pci_reset(); - - /* setup COMMAND register */ -@@ -377,9 +374,11 @@ static int ar71xx_pci_probe(struct platf - - 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; - apc->pci_ctrl.io_resource = &apc->io_res; -+ pci_load_of_ranges(&apc->pci_ctrl, pdev->dev.of_node); - - register_pci_controller(&apc->pci_ctrl); - -@@ -390,6 +389,7 @@ static struct platform_driver ar71xx_pci - .probe = ar71xx_pci_probe, - .driver = { - .name = "ar71xx-pci", -+ .of_match_table = of_match_ptr(ar71xx_pci_ids), - }, - }; - |