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PCI: rockchip: dw: Add macro to control threaded init controllers

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Sometimes we may need disable threaded init controllers, for instance,
multiple PCIe-2-SATA usage need to disable threaded init in order to
fix the sequence of disk number.

Signed-off-by: Shawn Lin <shawn.lin@rock-chips.com>
Change-Id: I34d22c619046b3f0d7c03e4a19a5ff07680be057
This commit is contained in:
Shawn Lin
2022-01-24 17:35:49 +08:00
committed by Tao Huang
parent f89f45e5ef
commit 6bb6ab5f00
2 changed files with 22 additions and 9 deletions
Download Patch File Download Diff File Expand all files Collapse all files

7
drivers/pci/controller/dwc/Kconfig
View File

@@ -91,6 +91,13 @@ config PCIE_DW_ROCKCHIP
help
Enables support for the DW PCIe controller in the Rockchip SoC.
config PCIE_RK_THREADED_INIT
bool "Threaded initialize Rockchip DW based PCIe controller"
depends on PCIE_DW_ROCKCHIP
default y
help
Enables threaded initialize Rockchip DW based PCIe controller.
config PCI_EXYNOS
bool "Samsung Exynos PCIe controller"
depends on SOC_EXYNOS5440 || COMPILE_TEST

24
drivers/pci/controller/dwc/pcie-dw-rockchip.c
View File

@@ -55,6 +55,8 @@ struct reset_bulk_data {
struct reset_control *rst;
};
#define RK_PCIE_DBG 0
#define PCIE_DMA_OFFSET 0x380000
#define PCIE_DMA_WR_ENB 0xc
@@ -119,7 +121,6 @@ struct reset_bulk_data {
#define PCIE_CLIENT_DBG_FIFO_STATUS 0x350
#define PCIE_CLIENT_DBG_TRANSITION_DATA 0xffff0000
#define PCIE_CLIENT_DBF_EN 0xffff0003
#define RK_PCIE_DBG 0
#define PCIE_PHY_LINKUP BIT(0)
#define PCIE_DATA_LINKUP BIT(1)
@@ -1877,22 +1878,27 @@ deinit_clk:
rk_pcie_clk_deinit(rk_pcie);
disable_vpcie3v3:
rk_pcie_disable_power(rk_pcie);
device_release_driver(dev);
if (IS_ENABLED(CONFIG_PCIE_RK_THREADED_INIT))
device_release_driver(dev);
return ret;
}
static int rk_pcie_probe(struct platform_device *pdev)
{
struct task_struct *tsk;
if (IS_ENABLED(CONFIG_PCIE_RK_THREADED_INIT)) {
struct task_struct *tsk;
tsk = kthread_run(rk_pcie_really_probe, pdev, "rk-pcie");
if (IS_ERR(tsk)) {
dev_err(&pdev->dev, "start rk-pcie thread failed\n");
return PTR_ERR(tsk);
tsk = kthread_run(rk_pcie_really_probe, pdev, "rk-pcie");
if (IS_ERR(tsk)) {
dev_err(&pdev->dev, "start rk-pcie thread failed\n");
return PTR_ERR(tsk);
}
return 0;
}
return 0;
return rk_pcie_really_probe(pdev);
}
static int __maybe_unused rockchip_dw_pcie_suspend(struct device *dev)