diff options
Diffstat (limited to 'target/linux/ath79/patches-5.10/0020-MIPS-pci-ar724x-convert-to-OF.patch')
| -rw-r--r-- | target/linux/ath79/patches-5.10/0020-MIPS-pci-ar724x-convert-to-OF.patch | 205 |
1 files changed, 0 insertions, 205 deletions
diff --git a/target/linux/ath79/patches-5.10/0020-MIPS-pci-ar724x-convert-to-OF.patch b/target/linux/ath79/patches-5.10/0020-MIPS-pci-ar724x-convert-to-OF.patch deleted file mode 100644 index 2772c53392..0000000000 --- a/target/linux/ath79/patches-5.10/0020-MIPS-pci-ar724x-convert-to-OF.patch +++ /dev/null @@ -1,205 +0,0 @@ -From a522ee0199d5d3ea114ca2e211f6ac398d3e8e0b Mon Sep 17 00:00:00 2001 -From: John Crispin <john@phrozen.org> -Date: Sat, 23 Jun 2018 15:07:37 +0200 -Subject: [PATCH 20/33] MIPS: pci-ar724x: 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-ar724x.c | 88 ++++++++++++++++++++++------------------------ - 1 file changed, 42 insertions(+), 46 deletions(-) - ---- a/arch/mips/pci/pci-ar724x.c -+++ b/arch/mips/pci/pci-ar724x.c -@@ -11,8 +11,11 @@ - #include <linux/init.h> - #include <linux/delay.h> - #include <linux/platform_device.h> -+#include <linux/irqchip/chained_irq.h> - #include <asm/mach-ath79/ath79.h> - #include <asm/mach-ath79/ar71xx_regs.h> -+#include <linux/of_irq.h> -+#include <linux/of_pci.h> - - #define AR724X_PCI_REG_APP 0x00 - #define AR724X_PCI_REG_RESET 0x18 -@@ -42,17 +45,20 @@ struct ar724x_pci_controller { - void __iomem *crp_base; - - int irq; -- int irq_base; - - bool link_up; - bool bar0_is_cached; - u32 bar0_value; - -+ struct device_node *np; - struct pci_controller pci_controller; -+ struct irq_domain *domain; - struct resource io_res; - struct resource mem_res; - }; - -+static struct irq_chip ar724x_pci_irq_chip; -+ - static inline bool ar724x_pci_check_link(struct ar724x_pci_controller *apc) - { - u32 reset; -@@ -228,35 +234,31 @@ static struct pci_ops ar724x_pci_ops = { - - static void ar724x_pci_irq_handler(struct irq_desc *desc) - { -- struct ar724x_pci_controller *apc; -- void __iomem *base; -+ struct irq_chip *chip = irq_desc_get_chip(desc); -+ struct ar724x_pci_controller *apc = irq_desc_get_handler_data(desc); - u32 pending; - -- apc = irq_desc_get_handler_data(desc); -- base = apc->ctrl_base; -- -- pending = __raw_readl(base + AR724X_PCI_REG_INT_STATUS) & -- __raw_readl(base + AR724X_PCI_REG_INT_MASK); -+ chained_irq_enter(chip, desc); -+ pending = __raw_readl(apc->ctrl_base + AR724X_PCI_REG_INT_STATUS) & -+ __raw_readl(apc->ctrl_base + AR724X_PCI_REG_INT_MASK); - - if (pending & AR724X_PCI_INT_DEV0) -- generic_handle_irq(apc->irq_base + 0); -- -+ generic_handle_irq(irq_linear_revmap(apc->domain, 1)); - else - spurious_interrupt(); -+ chained_irq_exit(chip, desc); - } - - static void ar724x_pci_irq_unmask(struct irq_data *d) - { - struct ar724x_pci_controller *apc; - void __iomem *base; -- int offset; - u32 t; - - apc = irq_data_get_irq_chip_data(d); - base = apc->ctrl_base; -- offset = apc->irq_base - d->irq; - -- switch (offset) { -+ switch (irq_linear_revmap(apc->domain, d->irq)) { - case 0: - t = __raw_readl(base + AR724X_PCI_REG_INT_MASK); - __raw_writel(t | AR724X_PCI_INT_DEV0, -@@ -270,14 +272,12 @@ static void ar724x_pci_irq_mask(struct i - { - struct ar724x_pci_controller *apc; - void __iomem *base; -- int offset; - u32 t; - - apc = irq_data_get_irq_chip_data(d); - base = apc->ctrl_base; -- offset = apc->irq_base - d->irq; - -- switch (offset) { -+ switch (irq_linear_revmap(apc->domain, d->irq)) { - case 0: - t = __raw_readl(base + AR724X_PCI_REG_INT_MASK); - __raw_writel(t & ~AR724X_PCI_INT_DEV0, -@@ -302,26 +302,34 @@ static struct irq_chip ar724x_pci_irq_ch - .irq_mask_ack = ar724x_pci_irq_mask, - }; - -+static int ar724x_pci_irq_map(struct irq_domain *d, -+ unsigned int irq, irq_hw_number_t hw) -+{ -+ struct ar724x_pci_controller *apc = d->host_data; -+ -+ irq_set_chip_and_handler(irq, &ar724x_pci_irq_chip, handle_level_irq); -+ irq_set_chip_data(irq, apc); -+ -+ return 0; -+} -+ -+static const struct irq_domain_ops ar724x_pci_domain_ops = { -+ .xlate = irq_domain_xlate_onecell, -+ .map = ar724x_pci_irq_map, -+}; -+ - static void ar724x_pci_irq_init(struct ar724x_pci_controller *apc, - int id) - { - void __iomem *base; -- int i; - - base = apc->ctrl_base; - - __raw_writel(0, base + AR724X_PCI_REG_INT_MASK); - __raw_writel(0, base + AR724X_PCI_REG_INT_STATUS); - -- apc->irq_base = ATH79_PCI_IRQ_BASE + (id * AR724X_PCI_IRQ_COUNT); -- -- for (i = apc->irq_base; -- i < apc->irq_base + AR724X_PCI_IRQ_COUNT; i++) { -- irq_set_chip_and_handler(i, &ar724x_pci_irq_chip, -- handle_level_irq); -- irq_set_chip_data(i, apc); -- } -- -+ apc->domain = irq_domain_add_linear(apc->np, 2, -+ &ar724x_pci_domain_ops, apc); - irq_set_chained_handler_and_data(apc->irq, ar724x_pci_irq_handler, - apc); - } -@@ -388,29 +396,11 @@ static int ar724x_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; -- -+ apc->np = pdev->dev.of_node; - apc->pci_controller.pci_ops = &ar724x_pci_ops; - apc->pci_controller.io_resource = &apc->io_res; - apc->pci_controller.mem_resource = &apc->mem_res; -+ pci_load_of_ranges(&apc->pci_controller, pdev->dev.of_node); - - /* - * Do the full PCIE Root Complex Initialization Sequence if the PCIe -@@ -432,10 +422,16 @@ static int ar724x_pci_probe(struct platf - return 0; - } - -+static const struct of_device_id ar724x_pci_ids[] = { -+ { .compatible = "qcom,ar7240-pci" }, -+ {}, -+}; -+ - static struct platform_driver ar724x_pci_driver = { - .probe = ar724x_pci_probe, - .driver = { - .name = "ar724x-pci", -+ .of_match_table = of_match_ptr(ar724x_pci_ids), - }, - }; - |