f577cb25c0
The following patches were dropped because they are already applied upstream: - 0038-MIPS-lantiq-fpi-on-ar9.patch - 0039-MIPS-lantiq-initialize-usb-on-boot.patch - 0042-USB-DWC2-big-endian-support.patch - 0043-gpio-stp-xway-fix-phy-mask.patch All other patches were simply refreshed, except the following: - 0001-MIPS-lantiq-add-pcie-driver.patch Changes to arch/mips/lantiq/xway/sysctrl.c (these changes disabled some PMU gates for the vrx200 / VR9 SoCs) were removed since the upstream kernel disables unused PMU gates automatically (since 95135bfa7ead1becc2879230f72583dde2b71a0c "MIPS: Lantiq: Deactivate most of the devices by default"). - 0025-NET-MIPS-lantiq-adds-xrx200-net.patch Since OpenWrt commit 55ba20afcc2fe785146316e5be2c2473cb329885 drivers should use of_get_mac_address(). of_get_mac_address_mtd is not available for drivers anymore since it's called automatically within of_get_mac_address(). - 0028-NET-lantiq-various-etop-fixes.patch Same changes as in 0025-NET-MIPS-lantiq-adds-xrx200-net.patch While refreshing the kernel configuration SPI support had to be moved to config-4.4 because otherwise M25P80 was disabled. Signed-off-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com> SVN-Revision: 48307
159 lines
4.5 KiB
Diff
159 lines
4.5 KiB
Diff
--- a/arch/mips/pci/ifxmips_pcie.c
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+++ b/arch/mips/pci/ifxmips_pcie.c
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@@ -18,6 +18,9 @@
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#include <linux/pci_regs.h>
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#include <linux/module.h>
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+#include <linux/of_gpio.h>
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+#include <linux/of_platform.h>
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+
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#include "ifxmips_pcie.h"
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#include "ifxmips_pcie_reg.h"
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@@ -40,6 +43,7 @@
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static DEFINE_SPINLOCK(ifx_pcie_lock);
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u32 g_pcie_debug_flag = PCIE_MSG_ANY & (~PCIE_MSG_CFG);
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+static int pcie_reset_gpio;
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static ifx_pcie_irq_t pcie_irqs[IFX_PCIE_CORE_NR] = {
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{
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@@ -82,6 +86,22 @@ void ifx_pcie_debug(const char *fmt, ...
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printk("%s", buf);
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}
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+static inline void pcie_ep_gpio_rst_init(int pcie_port)
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+{
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+ gpio_direction_output(pcie_reset_gpio, 1);
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+ gpio_set_value(pcie_reset_gpio, 1);
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+}
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+
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+static inline void pcie_device_rst_assert(int pcie_port)
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+{
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+ gpio_set_value(pcie_reset_gpio, 0);
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+}
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+
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+static inline void pcie_device_rst_deassert(int pcie_port)
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+{
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+ mdelay(100);
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+ gpio_direction_output(pcie_reset_gpio, 1);
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+}
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static inline int pcie_ltssm_enable(int pcie_port)
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{
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@@ -1045,8 +1065,9 @@ pcie_rc_initialize(int pcie_port)
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return 0;
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}
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-static int __init ifx_pcie_bios_init(void)
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+static int __init ifx_pcie_bios_probe(struct platform_device *pdev)
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{
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+ struct device_node *node = pdev->dev.of_node;
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void __iomem *io_map_base;
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int pcie_port;
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int startup_port;
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@@ -1055,7 +1076,17 @@ static int __init ifx_pcie_bios_init(voi
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pcie_ahb_pmu_setup();
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startup_port = IFX_PCIE_PORT0;
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-
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+
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+ pcie_reset_gpio = of_get_named_gpio(node, "gpio-reset", 0);
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+ if (gpio_is_valid(pcie_reset_gpio)) {
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+ int ret = devm_gpio_request(&pdev->dev, pcie_reset_gpio, "pcie-reset");
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+ if (ret) {
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+ dev_err(&pdev->dev, "failed to request gpio %d\n", pcie_reset_gpio);
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+ return ret;
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+ }
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+ gpio_direction_output(pcie_reset_gpio, 1);
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+ }
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+
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for (pcie_port = startup_port; pcie_port < IFX_PCIE_CORE_NR; pcie_port++){
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if (pcie_rc_initialize(pcie_port) == 0) {
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IFX_PCIE_PRINT(PCIE_MSG_INIT, "%s: ifx_pcie_cfg_base 0x%p\n",
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@@ -1083,6 +1114,30 @@ static int __init ifx_pcie_bios_init(voi
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return 0;
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}
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+
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+static const struct of_device_id ifxmips_pcie_match[] = {
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+ { .compatible = "lantiq,pcie-xrx200" },
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+ {},
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+};
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+MODULE_DEVICE_TABLE(of, ifxmips_pcie_match);
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+
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+static struct platform_driver ltq_pci_driver = {
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+ .probe = ifx_pcie_bios_probe,
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+ .driver = {
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+ .name = "pcie-xrx200",
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+ .owner = THIS_MODULE,
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+ .of_match_table = ifxmips_pcie_match,
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+ },
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+};
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+
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+int __init ifx_pcie_bios_init(void)
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+{
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+ int ret = platform_driver_register(<q_pci_driver);
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+ if (ret)
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+ pr_info("pcie-xrx200: Error registering platform driver!");
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+ return ret;
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+}
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+
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arch_initcall(ifx_pcie_bios_init);
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MODULE_LICENSE("GPL");
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--- a/arch/mips/pci/ifxmips_pcie_vr9.h
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+++ b/arch/mips/pci/ifxmips_pcie_vr9.h
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@@ -22,8 +22,6 @@
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#include <linux/gpio.h>
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#include <lantiq_soc.h>
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-#define IFX_PCIE_GPIO_RESET 494
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-
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#define IFX_REG_R32 ltq_r32
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#define IFX_REG_W32 ltq_w32
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#define CONFIG_IFX_PCIE_HW_SWAP
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@@ -53,21 +51,6 @@
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#define OUT ((volatile u32*)(IFX_GPIO + 0x0070))
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-static inline void pcie_ep_gpio_rst_init(int pcie_port)
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-{
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-
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- gpio_request(IFX_PCIE_GPIO_RESET, "pcie-reset");
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- gpio_direction_output(IFX_PCIE_GPIO_RESET, 1);
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- gpio_set_value(IFX_PCIE_GPIO_RESET, 1);
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-
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-/* ifx_gpio_pin_reserve(IFX_PCIE_GPIO_RESET, ifx_pcie_gpio_module_id);
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- ifx_gpio_output_set(IFX_PCIE_GPIO_RESET, ifx_pcie_gpio_module_id);
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- ifx_gpio_dir_out_set(IFX_PCIE_GPIO_RESET, ifx_pcie_gpio_module_id);
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- ifx_gpio_altsel0_clear(IFX_PCIE_GPIO_RESET, ifx_pcie_gpio_module_id);
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- ifx_gpio_altsel1_clear(IFX_PCIE_GPIO_RESET, ifx_pcie_gpio_module_id);
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- ifx_gpio_open_drain_set(IFX_PCIE_GPIO_RESET, ifx_pcie_gpio_module_id);*/
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-}
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-
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static inline void pcie_ahb_pmu_setup(void)
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{
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/* Enable AHB bus master/slave */
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@@ -180,20 +163,6 @@ static inline void pcie_phy_rst_deassert
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IFX_REG_W32(reg, IFX_RCU_RST_REQ);
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}
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-static inline void pcie_device_rst_assert(int pcie_port)
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-{
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- gpio_set_value(IFX_PCIE_GPIO_RESET, 0);
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-// ifx_gpio_output_clear(IFX_PCIE_GPIO_RESET, ifx_pcie_gpio_module_id);
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-}
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-
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-static inline void pcie_device_rst_deassert(int pcie_port)
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-{
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- mdelay(100);
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- gpio_direction_output(IFX_PCIE_GPIO_RESET, 1);
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-// gpio_set_value(IFX_PCIE_GPIO_RESET, 1);
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- //ifx_gpio_output_set(IFX_PCIE_GPIO_RESET, ifx_pcie_gpio_module_id);
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-}
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-
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static inline void pcie_core_pmu_setup(int pcie_port)
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{
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struct clk *clk;
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