linux-kernel - [PATCHv6 26/28] PCI: mobiveil: Move PCIe PIO enablement out of inbound window routine

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Date:   Fri,  5 Jul 2019 17:56:54 +0800
From:   Hou Zhiqiang <Zhiqiang.Hou@....com>
To:     linux-pci@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
        bhelgaas@...gle.com, robh+dt@...nel.org, mark.rutland@....com,
        l.subrahmanya@...iveil.co.in, shawnguo@...nel.org,
        leoyang.li@....com, lorenzo.pieralisi@....com,
        catalin.marinas@....com, will.deacon@....com
Cc:     Mingkai.Hu@....com, Minghuan.Lian@....com, Xiaowei.Bao@....com,
        Hou Zhiqiang <Zhiqiang.Hou@....com>
Subject: [PATCHv6 26/28] PCI: mobiveil: Move PCIe PIO enablement out of inbound window routine

Move the PCIe PIO master enablement to function mobiveil_host_init().

Signed-off-by: Hou Zhiqiang <Zhiqiang.Hou@....com>
Reviewed-by: Minghuan Lian <Minghuan.Lian@....com>
Reviewed-by: Subrahmanya Lingappa <l.subrahmanya@...iveil.co.in>
---
V6:
 - Splited from #9 of v5 patches, no functional change.

 drivers/pci/controller/pcie-mobiveil.c |    9 +++++----
 1 files changed, 5 insertions(+), 4 deletions(-)

diff --git a/drivers/pci/controller/pcie-mobiveil.c b/drivers/pci/controller/pcie-mobiveil.c
index aeba37c..f35d14b 100644
--- a/drivers/pci/controller/pcie-mobiveil.c
+++ b/drivers/pci/controller/pcie-mobiveil.c
@@ -469,10 +469,6 @@ static void program_ib_windows(struct mobiveil_pcie *pcie, int win_num,
 		return;
 	}
 
-	value = csr_readl(pcie, PAB_PEX_PIO_CTRL);
-	value |= 1 << PIO_ENABLE_SHIFT;
-	csr_writel(pcie, value, PAB_PEX_PIO_CTRL);
-
 	value = csr_readl(pcie, PAB_PEX_AMAP_CTRL(win_num));
 	value &= ~(AMAP_CTRL_TYPE_MASK << AMAP_CTRL_TYPE_SHIFT | WIN_SIZE_MASK);
 	value |= type << AMAP_CTRL_TYPE_SHIFT | 1 << AMAP_CTRL_EN_SHIFT |
@@ -610,6 +606,11 @@ static int mobiveil_host_init(struct mobiveil_pcie *pcie)
 	value |= APIO_EN_MASK;
 	csr_writel(pcie, value, PAB_AXI_PIO_CTRL);
 
+	/* Enable PCIe PIO master */
+	value = csr_readl(pcie, PAB_PEX_PIO_CTRL);
+	value |= 1 << PIO_ENABLE_SHIFT;
+	csr_writel(pcie, value, PAB_PEX_PIO_CTRL);
+
 	/*
 	 * we'll program one outbound window for config reads and
 	 * another default inbound window for all the upstream traffic
-- 
1.7.1