From: Frank Li <Frank.Li@nxp.com>
To: helgaas@kernel.org, manivannan.sadhasivam@linaro.org
Cc: Frank.li@nxp.com, bhelgaas@google.com, conor+dt@kernel.org,
devicetree@vger.kernel.org, festevam@gmail.com,
hongxing.zhu@nxp.com, imx@lists.linux.dev, kernel@pengutronix.de,
krzysztof.kozlowski+dt@linaro.org, kw@linux.com,
l.stach@pengutronix.de, linux-arm-kernel@lists.infradead.org,
linux-imx@nxp.com, linux-kernel@vger.kernel.org,
linux-pci@vger.kernel.org, lpieralisi@kernel.org,
robh@kernel.org, s.hauer@pengutronix.de, shawnguo@kernel.org
Subject: [PATCH v2 6/9] PCI: imx6: Simplify configure_type() by using mode_off and mode_mask
Date: Thu, 7 Dec 2023 14:34:27 -0500 [thread overview]
Message-ID: <20231207193430.431994-7-Frank.Li@nxp.com> (raw)
In-Reply-To: <20231207193430.431994-1-Frank.Li@nxp.com>
Add drvdata::mode_off and drvdata::mode_mask to simple
imx6_pcie_configure_type() logic.
Signed-off-by: Frank Li <Frank.Li@nxp.com>
---
Notes:
Change from v1 to v2
- use ffs() to fixe build error.
powerpc-linux-ld: drivers/pci/controller/dwc/pci-imx6.o: in function `imx6_pcie_host_init':
>> pci-imx6.c:(.text.imx6_pcie_host_init+0x120): undefined reference to `__ffsdi2'
drivers/pci/controller/dwc/pci-imx6.c | 60 ++++++++++++++++++---------
1 file changed, 40 insertions(+), 20 deletions(-)
diff --git a/drivers/pci/controller/dwc/pci-imx6.c b/drivers/pci/controller/dwc/pci-imx6.c
index 5bfb780e441fd..1fac6129eeb5f 100644
--- a/drivers/pci/controller/dwc/pci-imx6.c
+++ b/drivers/pci/controller/dwc/pci-imx6.c
@@ -69,6 +69,7 @@ enum imx6_pcie_variants {
#define imx6_check_flag(pci, val) (pci->drvdata->flags & val)
+#define IMX6_PCIE_MAX_INSTANCES 2
struct imx6_pcie_drvdata {
enum imx6_pcie_variants variant;
enum dw_pcie_device_mode mode;
@@ -77,6 +78,8 @@ struct imx6_pcie_drvdata {
const char *gpr;
const u32 ltssm_off;
const u32 ltssm_mask;
+ const u32 mode_off[IMX6_PCIE_MAX_INSTANCES];
+ const u32 mode_mask[IMX6_PCIE_MAX_INSTANCES];
};
struct imx6_pcie {
@@ -177,32 +180,25 @@ static unsigned int imx6_pcie_grp_offset(const struct imx6_pcie *imx6_pcie)
static void imx6_pcie_configure_type(struct imx6_pcie *imx6_pcie)
{
- unsigned int mask, val, mode;
+ const struct imx6_pcie_drvdata *drvdata = imx6_pcie->drvdata;
+ unsigned int mask, val, mode, id;
- if (imx6_pcie->drvdata->mode == DW_PCIE_EP_TYPE)
+ if (drvdata->mode == DW_PCIE_EP_TYPE)
mode = PCI_EXP_TYPE_ENDPOINT;
else
mode = PCI_EXP_TYPE_ROOT_PORT;
- switch (imx6_pcie->drvdata->variant) {
- case IMX8MQ:
- case IMX8MQ_EP:
- if (imx6_pcie->controller_id == 1) {
- mask = IMX8MQ_GPR12_PCIE2_CTRL_DEVICE_TYPE;
- val = FIELD_PREP(IMX8MQ_GPR12_PCIE2_CTRL_DEVICE_TYPE,
- mode);
- } else {
- mask = IMX6Q_GPR12_DEVICE_TYPE;
- val = FIELD_PREP(IMX6Q_GPR12_DEVICE_TYPE, mode);
- }
- break;
- default:
- mask = IMX6Q_GPR12_DEVICE_TYPE;
- val = FIELD_PREP(IMX6Q_GPR12_DEVICE_TYPE, mode);
- break;
- }
+ id = imx6_pcie->controller_id;
+
+ /* If mode_mask[id] is zero, means each controller have its individual gpr */
+ if (!drvdata->mode_mask[id])
+ id = 0;
+
+ mask = drvdata->mode_mask[id];
+ /* FIELD_PREP mask have been constant */
+ val = mode << (ffs(mask) - 1);
- regmap_update_bits(imx6_pcie->iomuxc_gpr, IOMUXC_GPR12, mask, val);
+ regmap_update_bits(imx6_pcie->iomuxc_gpr, drvdata->mode_off[id], mask, val);
}
static int pcie_phy_poll_ack(struct imx6_pcie *imx6_pcie, bool exp_val)
@@ -1437,6 +1433,8 @@ static const struct imx6_pcie_drvdata drvdata[] = {
.gpr = "fsl,imx6q-iomuxc-gpr",
.ltssm_off = IOMUXC_GPR12,
.ltssm_mask = IMX6Q_GPR12_PCIE_CTL_2,
+ .mode_off[0] = IOMUXC_GPR12,
+ .mode_mask[0] = IMX6Q_GPR12_DEVICE_TYPE,
},
[IMX6SX] = {
.variant = IMX6SX,
@@ -1447,6 +1445,8 @@ static const struct imx6_pcie_drvdata drvdata[] = {
.gpr = "fsl,imx6q-iomuxc-gpr",
.ltssm_off = IOMUXC_GPR12,
.ltssm_mask = IMX6Q_GPR12_PCIE_CTL_2,
+ .mode_off[0] = IOMUXC_GPR12,
+ .mode_mask[0] = IMX6Q_GPR12_DEVICE_TYPE,
},
[IMX6QP] = {
.variant = IMX6QP,
@@ -1457,6 +1457,8 @@ static const struct imx6_pcie_drvdata drvdata[] = {
.gpr = "fsl,imx6q-iomuxc-gpr",
.ltssm_off = IOMUXC_GPR12,
.ltssm_mask = IMX6Q_GPR12_PCIE_CTL_2,
+ .mode_off[0] = IOMUXC_GPR12,
+ .mode_mask[0] = IMX6Q_GPR12_DEVICE_TYPE,
},
[IMX7D] = {
.variant = IMX7D,
@@ -1464,6 +1466,8 @@ static const struct imx6_pcie_drvdata drvdata[] = {
IMX6_PCIE_FLAG_HAS_APP_RESET |
IMX6_PCIE_FLAG_HAS_PHY_RESET,
.gpr = "fsl,imx7d-iomuxc-gpr",
+ .mode_off[0] = IOMUXC_GPR12,
+ .mode_mask[0] = IMX6Q_GPR12_DEVICE_TYPE,
},
[IMX8MQ] = {
.variant = IMX8MQ,
@@ -1471,6 +1475,10 @@ static const struct imx6_pcie_drvdata drvdata[] = {
IMX6_PCIE_FLAG_HAS_APP_RESET |
IMX6_PCIE_FLAG_HAS_PHY_RESET,
.gpr = "fsl,imx8mq-iomuxc-gpr",
+ .mode_off[0] = IOMUXC_GPR12,
+ .mode_mask[0] = IMX6Q_GPR12_DEVICE_TYPE,
+ .mode_off[1] = IOMUXC_GPR12,
+ .mode_mask[1] = IMX8MQ_GPR12_PCIE2_CTRL_DEVICE_TYPE,
},
[IMX8MM] = {
.variant = IMX8MM,
@@ -1479,6 +1487,8 @@ static const struct imx6_pcie_drvdata drvdata[] = {
IMX6_PCIE_FLAG_HAS_PHY |
IMX6_PCIE_FLAG_HAS_APP_RESET,
.gpr = "fsl,imx8mm-iomuxc-gpr",
+ .mode_off[0] = IOMUXC_GPR12,
+ .mode_mask[0] = IMX6Q_GPR12_DEVICE_TYPE,
},
[IMX8MP] = {
.variant = IMX8MP,
@@ -1487,6 +1497,8 @@ static const struct imx6_pcie_drvdata drvdata[] = {
IMX6_PCIE_FLAG_HAS_PHY |
IMX6_PCIE_FLAG_HAS_APP_RESET,
.gpr = "fsl,imx8mp-iomuxc-gpr",
+ .mode_off[0] = IOMUXC_GPR12,
+ .mode_mask[0] = IMX6Q_GPR12_DEVICE_TYPE,
},
[IMX8MQ_EP] = {
.variant = IMX8MQ_EP,
@@ -1495,6 +1507,10 @@ static const struct imx6_pcie_drvdata drvdata[] = {
IMX6_PCIE_FLAG_HAS_PHY_RESET,
.mode = DW_PCIE_EP_TYPE,
.gpr = "fsl,imx8mq-iomuxc-gpr",
+ .mode_off[0] = IOMUXC_GPR12,
+ .mode_mask[0] = IMX6Q_GPR12_DEVICE_TYPE,
+ .mode_off[1] = IOMUXC_GPR12,
+ .mode_mask[1] = IMX8MQ_GPR12_PCIE2_CTRL_DEVICE_TYPE,
},
[IMX8MM_EP] = {
.variant = IMX8MM_EP,
@@ -1502,12 +1518,16 @@ static const struct imx6_pcie_drvdata drvdata[] = {
IMX6_PCIE_FLAG_HAS_PHY,
.mode = DW_PCIE_EP_TYPE,
.gpr = "fsl,imx8mm-iomuxc-gpr",
+ .mode_off[0] = IOMUXC_GPR12,
+ .mode_mask[0] = IMX6Q_GPR12_DEVICE_TYPE,
},
[IMX8MP_EP] = {
.variant = IMX8MP_EP,
.flags = IMX6_PCIE_FLAG_HAS_CLK_AUX,
.mode = DW_PCIE_EP_TYPE,
.gpr = "fsl,imx8mp-iomuxc-gpr",
+ .mode_off[0] = IOMUXC_GPR12,
+ .mode_mask[0] = IMX6Q_GPR12_DEVICE_TYPE,
},
};
--
2.34.1
next prev parent reply other threads:[~2023-12-07 19:35 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-12-07 19:34 [PATCH v2 0/9] PCI: imx6: Clean up and add imx95 pci support Frank Li
2023-12-07 19:34 ` [PATCH v2 1/9] PCI: imx6: Simplify clock handling by using HAS_CLK_* bitmask Frank Li
2023-12-07 19:34 ` [PATCH v2 2/9] PCI: imx6: Simplify phy handling by using by using IMX6_PCIE_FLAG_HAS_PHY Frank Li
2023-12-07 19:34 ` [PATCH v2 3/9] PCI: imx6: Simplify reset handling by using by using *_FLAG_HAS_*_RESET Frank Li
2023-12-07 19:34 ` [PATCH v2 4/9] PCI: imx6: Using "linux,pci-domain" as slot ID Frank Li
2023-12-07 19:34 ` [PATCH v2 5/9] PCI: imx6: Simplify ltssm_enable() by using ltssm_off and ltssm_mask Frank Li
2023-12-07 19:34 ` Frank Li [this message]
2023-12-07 19:34 ` [PATCH v2 7/9] PCI: imx6: Simplify switch-case logic by involve init_phy callback Frank Li
2023-12-07 19:34 ` [PATCH v2 8/9] dt-bindings: imx6q-pcie: Add imx95 pcie compatible string Frank Li
2023-12-07 19:34 ` [PATCH v2 9/9] PCI: imx6: Add iMX95 PCIe support Frank Li
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