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From: Andrey Smirnov <andrew.smirnov@gmail.com>
To: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Cc: Andrey Smirnov <andrew.smirnov@gmail.com>,
	Bjorn Helgaas <bhelgaas@google.com>,
	Fabio Estevam <fabio.estevam@nxp.com>,
	Chris Healy <cphealy@gmail.com>,
	Lucas Stach <l.stach@pengutronix.de>,
	Leonard Crestez <leonard.crestez@nxp.com>,
	"A.s. Dong" <aisheng.dong@nxp.com>,
	Richard Zhu <hongxing.zhu@nxp.com>,
	linux-imx@nxp.com, linux-arm-kernel@lists.infradead.org,
	linux-kernel@vger.kernel.org, linux-pci@vger.kernel.org
Subject: [PATCH 2/3] PCI: imx6: Invert checks in imx6_pcie_reset_phy() and imx6_setup_phy_mpll()
Date: Sun, 16 Dec 2018 15:09:15 -0800	[thread overview]
Message-ID: <20181216230916.22982-3-andrew.smirnov@gmail.com> (raw)
In-Reply-To: <20181216230916.22982-1-andrew.smirnov@gmail.com>

In order to avoid having potentially ever growing list of variants
that don't support methods implemented in imx6_pcie_reset_phy() and
imx6_setup_phy_mpll(), change logical checks in the to check for SoC's
that _do_ support what they implement. While at it, share the code via
a small helper function.

Cc: Bjorn Helgaas <bhelgaas@google.com>
Cc: Fabio Estevam <fabio.estevam@nxp.com>
Cc: Chris Healy <cphealy@gmail.com>
Cc: Lucas Stach <l.stach@pengutronix.de>
Cc: Leonard Crestez <leonard.crestez@nxp.com>
Cc: "A.s. Dong" <aisheng.dong@nxp.com>
Cc: Richard Zhu <hongxing.zhu@nxp.com>
Cc: linux-imx@nxp.com
Cc: linux-arm-kernel@lists.infradead.org
Cc: linux-kernel@vger.kernel.org
Cc: linux-pci@vger.kernel.org
Suggested-by: Bjorn Helgaas <helgaas@kernel.org>
Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com>
---
 drivers/pci/controller/dwc/pci-imx6.c | 13 +++++++++----
 1 file changed, 9 insertions(+), 4 deletions(-)

diff --git a/drivers/pci/controller/dwc/pci-imx6.c b/drivers/pci/controller/dwc/pci-imx6.c
index 4b7f638b8aff..59658577e81d 100644
--- a/drivers/pci/controller/dwc/pci-imx6.c
+++ b/drivers/pci/controller/dwc/pci-imx6.c
@@ -256,12 +256,18 @@ static int pcie_phy_write(struct imx6_pcie *imx6_pcie, int addr, int data)
 	return 0;
 }
 
+static bool imx6_pcie_has_imx6_phy(struct imx6_pcie *imx6_pcie)
+{
+	return imx6_pcie->variant == IMX6Q ||
+	       imx6_pcie->variant == IMX6SX ||
+	       imx6_pcie->variant == IMX6QP;
+}
+
 static void imx6_pcie_reset_phy(struct imx6_pcie *imx6_pcie)
 {
 	u32 tmp;
 
-	if (imx6_pcie->variant == IMX7D ||
-	    imx6_pcie->variant == IMX8MQ)
+	if (!imx6_pcie_has_imx6_phy(imx6_pcie))
 		return;
 
 	pcie_phy_read(imx6_pcie, PHY_RX_OVRD_IN_LO, &tmp);
@@ -637,8 +643,7 @@ static int imx6_setup_phy_mpll(struct imx6_pcie *imx6_pcie)
 	int mult, div;
 	u32 val;
 
-	if (imx6_pcie->variant == IMX7D ||
-	    imx6_pcie->variant == IMX8MQ)
+	if (!imx6_pcie_has_imx6_phy(imx6_pcie))
 		return 0;
 
 	switch (phy_rate) {
-- 
2.19.1


  parent reply	other threads:[~2018-12-16 23:09 UTC|newest]

Thread overview: 10+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2018-12-16 23:09 [PATCH 0/3] Fixes for "PCIE support for i.MX8MQ" Andrey Smirnov
2018-12-16 23:09 ` [PATCH 1/3] PCI: imx6: Fixup Kconfig and #endif placement Andrey Smirnov
2018-12-16 23:09 ` Andrey Smirnov [this message]
2018-12-17 10:24   ` [PATCH 2/3] PCI: imx6: Invert checks in imx6_pcie_reset_phy() and imx6_setup_phy_mpll() Leonard Crestez
2018-12-17 17:11     ` Andrey Smirnov
2018-12-16 23:09 ` [PATCH 3/3] PCI: imx6: Make fallthrough comments more consistent Andrey Smirnov
2018-12-17 13:58   ` Bjorn Helgaas
2018-12-17 18:03     ` Andrey Smirnov
2018-12-17 11:00 ` [PATCH 0/3] Fixes for "PCIE support for i.MX8MQ" Lorenzo Pieralisi
2018-12-17 17:18   ` Andrey Smirnov

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