diff options
| author | Andrey Smirnov <[email protected]> | 2019-04-14 17:46:30 -0700 |
|---|---|---|
| committer | Lorenzo Pieralisi <[email protected]> | 2019-05-01 11:35:47 +0100 |
| commit | 37d5d32ae091c7acff23a080e3c179977fb943cd (patch) | |
| tree | 108da2f4cd8718a786f9305642a54740fb8cfcf7 | |
| parent | c2c708bc1dbf9655211d3843e2f36c7951059cf0 (diff) | |
PCI: imx6: Restrict PHY register data to 16-bit
PHY registers on i.MX6 are 16-bit wide, so we can get rid of explicit
masking if we restrict pcie_phy_read()/pcie_phy_write() to use 'u16'
instead of 'int'. No functional change intended.
Signed-off-by: Andrey Smirnov <[email protected]>
Signed-off-by: Lorenzo Pieralisi <[email protected]>
Reviewed-by: Lucas Stach <[email protected]>
Cc: Lorenzo Pieralisi <[email protected]>
Cc: Bjorn Helgaas <[email protected]>
Cc: Chris Healy <[email protected]>
Cc: Lucas Stach <[email protected]>
Cc: [email protected]
Cc: [email protected]
| -rw-r--r-- | drivers/pci/controller/dwc/pci-imx6.c | 13 |
1 files changed, 6 insertions, 7 deletions
diff --git a/drivers/pci/controller/dwc/pci-imx6.c b/drivers/pci/controller/dwc/pci-imx6.c index 3fd084357488..30e764b6cbcc 100644 --- a/drivers/pci/controller/dwc/pci-imx6.c +++ b/drivers/pci/controller/dwc/pci-imx6.c @@ -195,10 +195,10 @@ static int pcie_phy_wait_ack(struct imx6_pcie *imx6_pcie, int addr) } /* Read from the 16-bit PCIe PHY control registers (not memory-mapped) */ -static int pcie_phy_read(struct imx6_pcie *imx6_pcie, int addr, int *data) +static int pcie_phy_read(struct imx6_pcie *imx6_pcie, int addr, u16 *data) { struct dw_pcie *pci = imx6_pcie->pci; - u32 val, phy_ctl; + u32 phy_ctl; int ret; ret = pcie_phy_wait_ack(imx6_pcie, addr); @@ -213,8 +213,7 @@ static int pcie_phy_read(struct imx6_pcie *imx6_pcie, int addr, int *data) if (ret) return ret; - val = dw_pcie_readl_dbi(pci, PCIE_PHY_STAT); - *data = val & 0xffff; + *data = dw_pcie_readl_dbi(pci, PCIE_PHY_STAT); /* deassert Read signal */ dw_pcie_writel_dbi(pci, PCIE_PHY_CTRL, 0x00); @@ -222,7 +221,7 @@ static int pcie_phy_read(struct imx6_pcie *imx6_pcie, int addr, int *data) return pcie_phy_poll_ack(imx6_pcie, false); } -static int pcie_phy_write(struct imx6_pcie *imx6_pcie, int addr, int data) +static int pcie_phy_write(struct imx6_pcie *imx6_pcie, int addr, u16 data) { struct dw_pcie *pci = imx6_pcie->pci; u32 var; @@ -279,7 +278,7 @@ static int pcie_phy_write(struct imx6_pcie *imx6_pcie, int addr, int data) static void imx6_pcie_reset_phy(struct imx6_pcie *imx6_pcie) { - u32 tmp; + u16 tmp; if (!(imx6_pcie->drvdata->flags & IMX6_PCIE_FLAG_IMX6_PHY)) return; @@ -675,7 +674,7 @@ static int imx6_setup_phy_mpll(struct imx6_pcie *imx6_pcie) { unsigned long phy_rate = clk_get_rate(imx6_pcie->pcie_phy); int mult, div; - u32 val; + u16 val; if (!(imx6_pcie->drvdata->flags & IMX6_PCIE_FLAG_IMX6_PHY)) return 0; |