From: Zhiqiang Hou <Zhiqiang.Hou@nxp.com>
To: linux-pci@vger.kernel.org, linux-arm-kernel@lists.infradead.org,
devicetree@vger.kernel.org, linux-kernel@vger.kernel.org,
bhelgaas@google.com, robh+dt@kernel.org, andrew.murray@arm.com,
arnd@arndb.de, mark.rutland@arm.com,
l.subrahmanya@mobiveil.co.in, shawnguo@kernel.org,
m.karthikeyan@mobiveil.co.in, leoyang.li@nxp.com,
lorenzo.pieralisi@arm.com, catalin.marinas@arm.com,
will.deacon@arm.com
Cc: Mingkai.Hu@nxp.com, Minghuan.Lian@nxp.com, Xiaowei.Bao@nxp.com,
Hou Zhiqiang <Zhiqiang.Hou@nxp.com>
Subject: [PATCHv10 06/13] PCI: mobiveil: Add callback function for link up check
Date: Thu, 13 Feb 2020 12:06:37 +0800 [thread overview]
Message-ID: <20200213040644.45858-7-Zhiqiang.Hou@nxp.com> (raw)
In-Reply-To: <20200213040644.45858-1-Zhiqiang.Hou@nxp.com>
From: Hou Zhiqiang <Zhiqiang.Hou@nxp.com>
The platforms, in which the Mobiveil GPEX is integrated,
may have their specific mechanism to check link up status.
This patch is to enable these platforms to implement theirs.
Signed-off-by: Hou Zhiqiang <Zhiqiang.Hou@nxp.com>
Reviewed-by: Andrew Murray <andrew.murray@arm.com>
---
V10:
- No change
drivers/pci/controller/mobiveil/pcie-mobiveil.c | 3 +++
drivers/pci/controller/mobiveil/pcie-mobiveil.h | 5 +++++
2 files changed, 8 insertions(+)
diff --git a/drivers/pci/controller/mobiveil/pcie-mobiveil.c b/drivers/pci/controller/mobiveil/pcie-mobiveil.c
index 2773f823c9ea..b9ed2d95641c 100644
--- a/drivers/pci/controller/mobiveil/pcie-mobiveil.c
+++ b/drivers/pci/controller/mobiveil/pcie-mobiveil.c
@@ -125,6 +125,9 @@ void mobiveil_csr_write(struct mobiveil_pcie *pcie, u32 val, u32 off,
bool mobiveil_pcie_link_up(struct mobiveil_pcie *pcie)
{
+ if (pcie->ops->link_up)
+ return pcie->ops->link_up(pcie);
+
return (mobiveil_csr_readl(pcie, LTSSM_STATUS) &
LTSSM_STATUS_L0_MASK) == LTSSM_STATUS_L0;
}
diff --git a/drivers/pci/controller/mobiveil/pcie-mobiveil.h b/drivers/pci/controller/mobiveil/pcie-mobiveil.h
index 0e6b5468c026..346bf79a581b 100644
--- a/drivers/pci/controller/mobiveil/pcie-mobiveil.h
+++ b/drivers/pci/controller/mobiveil/pcie-mobiveil.h
@@ -148,6 +148,10 @@ struct mobiveil_root_port {
struct pci_host_bridge *bridge;
};
+struct mobiveil_pab_ops {
+ int (*link_up)(struct mobiveil_pcie *pcie);
+};
+
struct mobiveil_pcie {
struct platform_device *pdev;
void __iomem *csr_axi_slave_base; /* root port config base */
@@ -157,6 +161,7 @@ struct mobiveil_pcie {
int ppio_wins;
int ob_wins_configured; /* configured outbound windows */
int ib_wins_configured; /* configured inbound windows */
+ const struct mobiveil_pab_ops *ops;
struct mobiveil_root_port rp;
};
--
2.17.1
next prev parent reply other threads:[~2020-02-13 4:10 UTC|newest]
Thread overview: 38+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-02-13 4:06 [PATCHv10 00/13] PCI: Recode Mobiveil driver and add PCIe Gen4 driver for NXP Layerscape SoCs Zhiqiang Hou
2020-02-13 4:06 ` [PATCHv10 01/13] PCI: mobiveil: Introduce a new structure mobiveil_root_port Zhiqiang Hou
2020-02-20 17:12 ` Andrew Murray
2020-02-24 5:45 ` Z.q. Hou
2020-02-13 4:06 ` [PATCHv10 02/13] PCI: mobiveil: Move the host initialization into a function Zhiqiang Hou
2020-02-20 17:19 ` Andrew Murray
2020-02-24 5:48 ` Z.q. Hou
2020-02-21 12:15 ` Lorenzo Pieralisi
2020-02-13 4:06 ` [PATCHv10 03/13] PCI: mobiveil: Collect the interrupt related operations " Zhiqiang Hou
2020-02-20 17:23 ` Andrew Murray
2020-02-24 5:49 ` Z.q. Hou
2020-02-13 4:06 ` [PATCHv10 04/13] PCI: mobiveil: Modularize the Mobiveil PCIe Host Bridge IP driver Zhiqiang Hou
2020-02-13 4:06 ` [PATCHv10 05/13] PCI: mobiveil: Add callback function for interrupt initialization Zhiqiang Hou
2020-02-20 17:25 ` Andrew Murray
2020-02-24 5:49 ` Z.q. Hou
2020-02-13 4:06 ` Zhiqiang Hou [this message]
2020-02-13 4:06 ` [PATCHv10 07/13] PCI: mobiveil: Allow mobiveil_host_init() to be used to re-init host Zhiqiang Hou
2020-02-20 17:28 ` Andrew Murray
2020-02-24 5:49 ` Z.q. Hou
2020-02-13 4:06 ` [PATCHv10 08/13] PCI: mobiveil: Add 8-bit and 16-bit CSR register accessors Zhiqiang Hou
2020-02-20 17:29 ` Andrew Murray
2020-02-24 5:50 ` Z.q. Hou
2020-02-13 4:06 ` [PATCHv10 09/13] PCI: mobiveil: Add Header Type field check Zhiqiang Hou
2020-02-20 17:31 ` Andrew Murray
2020-02-24 5:50 ` Z.q. Hou
2020-02-13 4:06 ` [PATCHv10 10/13] dt-bindings: PCI: Add NXP Layerscape SoCs PCIe Gen4 controller Zhiqiang Hou
2020-02-13 4:06 ` [PATCHv10 11/13] PCI: mobiveil: Add PCIe Gen4 RC driver for NXP Layerscape SoCs Zhiqiang Hou
2020-02-20 17:43 ` Andrew Murray
2020-02-24 5:50 ` Z.q. Hou
2020-02-21 12:17 ` Lorenzo Pieralisi
2020-02-24 5:58 ` Z.q. Hou
2020-02-13 4:06 ` [PATCHv10 12/13] arm64: dts: lx2160a: Add PCIe controller DT nodes Zhiqiang Hou
2020-02-24 1:28 ` Shawn Guo
2020-02-24 6:11 ` Z.q. Hou
2020-02-13 4:06 ` [PATCHv10 13/13] arm64: defconfig: Enable CONFIG_PCIE_LAYERSCAPE_GEN4 Zhiqiang Hou
2020-02-24 1:29 ` Shawn Guo
2020-02-21 12:19 ` [PATCHv10 00/13] PCI: Recode Mobiveil driver and add PCIe Gen4 driver for NXP Layerscape SoCs Lorenzo Pieralisi
2020-02-24 6:07 ` Z.q. Hou
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