From: Andrey Smirnov <andrew.smirnov@gmail.com>
To: linux-pci@vger.kernel.org
Cc: Andrey Smirnov <andrew.smirnov@gmail.com>,
Lorenzo Pieralisi <lorenzo.pieralisi@arm.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
Subject: [PATCH 15/21] PCI: imx6: Restrict PHY register data to 16-bit
Date: Thu, 20 Dec 2018 23:27:10 -0800 [thread overview]
Message-ID: <20181221072716.29017-16-andrew.smirnov@gmail.com> (raw)
In-Reply-To: <20181221072716.29017-1-andrew.smirnov@gmail.com>
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.
Cc: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
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
Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com>
---
drivers/pci/controller/dwc/pci-imx6.c | 13 ++++++-------
1 file changed, 6 insertions(+), 7 deletions(-)
diff --git a/drivers/pci/controller/dwc/pci-imx6.c b/drivers/pci/controller/dwc/pci-imx6.c
index ddab1859a07e..98e3730e75fa 100644
--- a/drivers/pci/controller/dwc/pci-imx6.c
+++ b/drivers/pci/controller/dwc/pci-imx6.c
@@ -152,10 +152,10 @@ 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);
@@ -170,8 +170,7 @@ 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);
@@ -179,7 +178,7 @@ static int pcie_phy_read(struct imx6_pcie *imx6_pcie, int addr, int *data)
return pcie_phy_poll_ack(imx6_pcie, 0);
}
-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;
@@ -236,7 +235,7 @@ 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;
pcie_phy_read(imx6_pcie, PHY_RX_OVRD_IN_LO, &tmp);
tmp |= (PHY_RX_OVRD_IN_LO_RX_DATA_EN |
@@ -547,7 +546,7 @@ 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;
switch (phy_rate) {
case 125000000:
--
2.19.1
next prev parent reply other threads:[~2018-12-21 7:29 UTC|newest]
Thread overview: 34+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-12-21 7:26 [PATCH 00/21] i.MX6, DesignWare PCI improvements Andrey Smirnov
2018-12-21 7:26 ` [PATCH 01/21] PCI: imx6: Simplify imx7d_pcie_wait_for_phy_pll_lock() Andrey Smirnov
2018-12-21 7:26 ` [PATCH 02/21] PCI: imx6: Remove redundant debug tracing Andrey Smirnov
2018-12-21 7:26 ` [PATCH 03/21] PCI: imx6: Return -ETIMEOUT from imx6_pcie_wait_for_speed_change() Andrey Smirnov
2018-12-21 7:26 ` [PATCH 04/21] PCI: imx6: Remove duplicate macro definitions Andrey Smirnov
2018-12-21 7:27 ` [PATCH 05/21] PCI: imx6: Remove PCIE_PL_PFLR_* constants Andrey Smirnov
2018-12-21 7:27 ` [PATCH 06/21] PCI: imx6: Remove PCIE_PHY_RX_ASIC_OUT* constants Andrey Smirnov
2018-12-21 7:27 ` [PATCH 07/21] PCI: designware: Make use of IS_ALIGNED() Andrey Smirnov
2019-01-02 9:33 ` Gustavo Pimentel
2019-01-04 18:37 ` Joe Perches
2019-01-04 18:52 ` Andrey Smirnov
2018-12-21 7:27 ` [PATCH 08/21] PCI: designware: Share code for dw_pcie_rd/wr_other_conf() Andrey Smirnov
2019-01-02 10:21 ` Gustavo Pimentel
2018-12-21 7:27 ` [PATCH 09/21] PCI: imx6: Drop imx6_pcie_link_up() Andrey Smirnov
2018-12-21 18:55 ` Trent Piepho
2018-12-22 0:39 ` Andrey Smirnov
2018-12-21 7:27 ` [PATCH 10/21] PCI: designware: imx6: Share PHY debug register definitions Andrey Smirnov
2018-12-21 7:27 ` [PATCH 11/21] PCI: designware: Make use of BIT() in constant definitions Andrey Smirnov
2018-12-26 15:14 ` Gustavo Pimentel
2019-01-02 18:28 ` Andrey Smirnov
2019-01-02 18:31 ` Gustavo Pimentel
2018-12-21 7:27 ` [PATCH 12/21] PCI: imx6: " Andrey Smirnov
2018-12-21 7:27 ` [PATCH 13/21] PCI: imx6: Simplify bit operations in PHY functions Andrey Smirnov
2018-12-21 7:27 ` [PATCH 14/21] PCI: imx6: Simplify pcie_phy_poll_ack() Andrey Smirnov
2018-12-21 7:27 ` Andrey Smirnov [this message]
2018-12-21 7:27 ` [PATCH 16/21] PCI: imx6: Pass data to dw_pcie_writel_dbi() directly Andrey Smirnov
2018-12-21 7:27 ` [PATCH 17/21] PCI: imx6: Use common mask in imx6_pcie_reset_phy() Andrey Smirnov
2018-12-21 7:27 ` [PATCH 18/21] PCI: imx6: Simplify bit operations in imx6_setup_phy_mpll() Andrey Smirnov
2018-12-21 7:27 ` [PATCH 19/21] PCI: imx6: Remove magic numbers from imx6_pcie_establish_link() Andrey Smirnov
2018-12-21 7:27 ` [PATCH 20/21] PCI: designware: Make use of GENMASK/FIELD_PREP Andrey Smirnov
2018-12-26 15:07 ` Gustavo Pimentel
2018-12-21 7:27 ` [PATCH 21/21] PCI: designware: Remove superfluous shifting in definitions Andrey Smirnov
2018-12-26 14:49 ` Gustavo Pimentel
2018-12-26 15:26 ` [PATCH 00/21] i.MX6, DesignWare PCI improvements Gustavo Pimentel
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20181221072716.29017-16-andrew.smirnov@gmail.com \
--to=andrew.smirnov@gmail.com \
--cc=aisheng.dong@nxp.com \
--cc=bhelgaas@google.com \
--cc=cphealy@gmail.com \
--cc=fabio.estevam@nxp.com \
--cc=hongxing.zhu@nxp.com \
--cc=l.stach@pengutronix.de \
--cc=leonard.crestez@nxp.com \
--cc=linux-arm-kernel@lists.infradead.org \
--cc=linux-imx@nxp.com \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-pci@vger.kernel.org \
--cc=lorenzo.pieralisi@arm.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).