summaryrefslogtreecommitdiffstats
path: root/drivers/pci/host/pcie-mediatek.c
Commit message (Collapse)AuthorAgeFilesLines
* PCI: Add SPDX GPL-2.0 to replace GPL v2 boilerplateBjorn Helgaas2018-01-281-9/+1
| | | | | | | | | | | Add SPDX GPL-2.0 to all PCI files that specified the GPL version 2 license. Remove the boilerplate GPL version 2 language, relying on the assertion in b24413180f56 ("License cleanup: add SPDX GPL-2.0 license identifier to files with no license") that the SPDX identifier may be used instead of the full boilerplate text. Signed-off-by: Bjorn Helgaas <bhelgaas@google.com> Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* PCI: mediatek: Use PCI_NUM_INTXHonghui Zhang2017-08-301-3/+2
| | | | | | | | Switch from using custom INTX_NUM macro to the generic PCI_NUM_INTX definition for the number of INTx interrupts. Signed-off-by: Honghui Zhang <honghui.zhang@mediatek.com> [bhelgaas: use subject/changelog from similar patches] Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
* PCI: mediatek: Add MSI support for MT2712 and MT7622Honghui Zhang2017-08-301-1/+155
| | | | | | | | | | | | | | MT2712 and MT7622's PCIe host controller support MSI, but only 32-bit MSI addresses are supported. It connects to GIC with the same IRQ number as the INTx IRQ, so it shares the same IRQ with INTx IRQ. Add MSI support for MT2712 and MT7622. Signed-off-by: Honghui Zhang <honghui.zhang@mediatek.com> [bhelgaas: changes to follow rcar & tegra: rename to mtk_pcie_msi_alloc(), add mtk_pcie_msi_free(), free hwirq if irq_create_mapping() fails, call irq_dispose_mapping() from mtk_msi_teardown_irq()] Signed-off-by: Bjorn Helgaas <bhelgaas@google.com> Acked-by: Ryder Lee <ryder.lee@mediatek.com>
* PCI: mediatek: Use bus->sysdata to get host private dataHonghui Zhang2017-08-301-2/+1
| | | | | | | | | 75983c6d1f38 ("PCI: mediatek: Add controller support for MT2712 and MT7622") has put the mtk_pcie * into bus->sysdata. Take advantage of that to get the private data and simplify the code. Signed-off-by: Honghui Zhang <honghui.zhang@mediatek.com> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com> Acked-by: Ryder Lee <ryder.lee@mediatek.com>
* PCI: mediatek: Add controller support for MT2712 and MT7622Ryder Lee2017-08-301-4/+458
| | | | | | | | | | | | | | | | | | | MT2712 and MT7622 using a new IP block of Gen2 controller which has two root ports and shares the same probing flow with MT2701/MT7623. Both MT2712 and MT7622 have the same per-port control registers, but there are slight differences between them: - MT7622 has more clocks than MT2712. - MT7622 has shared control registers which are used to enable LTSSM and ASPM while MT2712 does not. Add host controller support for MT2712/MT7622. Signed-off-by: Ryder Lee <ryder.lee@mediatek.com> Signed-off-by: Honghui Zhang <honghui.zhang@mediatek.com> [bhelgaas: folded in fix from http://lkml.kernel.org/r/1502715868-17651-2-git-send-email-honghui.zhang@mediatek.com] Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
* PCI: mediatek: Switch to use platform_get_resource_byname()Ryder Lee2017-08-301-7/+10
| | | | | | | | | | | | | This is a transitional patch. We currently use platfarm_get_resource() for retrieving the IOMEM resources, but there might be some chips don't have subsys/shared registers part, which depends on platform design, and these will be introduced in further patches. Switch this function to use the platform_get_resource_byname() so that the binding can be agnostic of the resource order. Signed-off-by: Ryder Lee <ryder.lee@mediatek.com> Signed-off-by: Honghui Zhang <honghui.zhang@mediatek.com> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
* PCI: mediatek: Add a structure to abstract the controller generationsHonghui Zhang2017-08-301-5/+26
| | | | | | | | | | Introduce a structure "mtk_pcie_soc" to abstract the differences between controller generations, and the .startup() hook is used to encapsulate some SoC-dependent related setting. In doing so, the common code which will be reused by future chips. Signed-off-by: Ryder Lee <ryder.lee@mediatek.com> Signed-off-by: Honghui Zhang <honghui.zhang@mediatek.com> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
* PCI: mediatek: Rename port->index and mtk_pcie_parse_ports()Honghui Zhang2017-08-301-25/+25
| | | | | | | | | | Rename "port->index" to "port->slot" since the ports are hardwired at PCI_SLOT. Also rename "mtk_pcie_parse_ports()" to "mtk_pcie_parse_port()" since it parses one port each time. No functional change in this patch. Signed-off-by: Honghui Zhang <honghui.zhang@mediatek.com> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
* PCI: mediatek: Use readl_poll_timeout() to wait for Gen2 trainingRyder Lee2017-08-301-30/+22
| | | | | | | | Wait for Gen2 training with readl_poll_timeout(), and simplify the hardware assert logical by merging it into a new mtk_pcie_startup_port() interface. Signed-off-by: Ryder Lee <ryder.lee@mediatek.com> Signed-off-by: Honghui Zhang <honghui.zhang@mediatek.com> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
* PCI: mediatek: Explicitly request exclusive reset controlPhilipp Zabel2017-08-301-1/+1
| | | | | | | | | | | | | | Commit a53e35db70d1 ("reset: Ensure drivers are explicit when requesting reset lines") started to transition the reset control request API calls to explicitly state whether the driver needs exclusive or shared reset control behavior. Convert all drivers requesting exclusive resets to the explicit API call so the temporary transition helpers can be removed. No functional changes. Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com> Cc: Ryder Lee <ryder.lee@mediatek.com> Cc: Matthias Brugger <matthias.bgg@gmail.com>
* PCI: mediatek: Add MediaTek PCIe host controller supportRyder Lee2017-07-021-0/+554
Add support for the MediaTek PCIe Gen2 controller which can be found on MT7623 series SoCs. [bhelgaas: fold in mtk_pcie_parse_and_add_res() bugfix from http://lkml.kernel.org/r/1496644078-27122-1-git-send-email-ryder.lee@mediatek.com] [bhelgaas: fold in MAINTAINERS update from http://lkml.kernel.org/r/1497588789-28607-1-git-send-email-ryder.lee@mediatek.com] [bhelgaas: fold in pci_scan_root_bus_bridge() update and leak fix from http://lkml.kernel.org/r/1498555451-55073-2-git-send-email-ryder.lee@mediatek.com] [bhelgaas: fold in powerup fixes from http://lkml.kernel.org/r/1497866400-41844-2-git-send-email-ryder.lee@mediatek.com] [bhelgaas: fold in poweroff when link down fixes from http://lkml.kernel.org/r/1497866400-41844-3-git-send-email-ryder.lee@mediatek.com] [bhelgaas: fold in optional property fixes from http://lkml.kernel.org/r/1497866400-41844-4-git-send-email-ryder.lee@mediatek.com] [bhelgaas: set host->map_irq and host->swizzle_irq and drop pci_fixup_irqs(), remove unnecessary "return", rename mtk_pcie_link_is_up() to mtk_pcie_link_up() for consistency, add local struct device pointer] [bhelgaas: fold in pci_add_flags() removal from http://lkml.kernel.org/r/1499061300-55951-1-git-send-email-ryder.lee@mediatek.com] Signed-off-by: Ryder Lee <ryder.lee@mediatek.com> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-08 12:32:44 +0000