From: Bjorn Helgaas <helgaas@kernel.org> To: Richard Zhu <hongxing.zhu@nxp.com>, Lucas Stach <l.stach@pengutronix.de>, Rob Herring <robh+dt@kernel.org>, Mark Brown <broonie@kernel.org>, Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>, Fabio Estevam <festevam@gmail.com>, Francesco Dolcini <francesco.dolcini@toradex.com> Cc: linux-pci@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, kernel@pengutronix.de, linux-imx@nxp.com, Bjorn Helgaas <bhelgaas@google.com> Subject: [PATCH v12 12/13] PCI: imx6: Do not hide phy driver callbacks and refine the error handling Date: Wed, 15 Jun 2022 18:15:50 -0500 [thread overview] Message-ID: <20220615231551.1054753-13-helgaas@kernel.org> (raw) In-Reply-To: <20220615231551.1054753-1-helgaas@kernel.org> From: Richard Zhu <hongxing.zhu@nxp.com> - Move the phy_power_on() to host_init and resume functions from imx6_pcie_clk_enable(). - Move the phy_init() to host_init and resume functions from imx6_pcie_deassert_core_reset(). Refine the error handling in imx6_pcie_host_init() and imx6_pcie_resume_noirq() functions accordingly. [bhelgaas: add "ret" back since it's used again] Link: https://lore.kernel.org/r/1655189942-12678-9-git-send-email-hongxing.zhu@nxp.com Signed-off-by: Richard Zhu <hongxing.zhu@nxp.com> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com> --- drivers/pci/controller/dwc/pci-imx6.c | 70 +++++++++++++++++++++------ 1 file changed, 56 insertions(+), 14 deletions(-) diff --git a/drivers/pci/controller/dwc/pci-imx6.c b/drivers/pci/controller/dwc/pci-imx6.c index b6e5420d67b6..bd736aff94a3 100644 --- a/drivers/pci/controller/dwc/pci-imx6.c +++ b/drivers/pci/controller/dwc/pci-imx6.c @@ -639,14 +639,6 @@ static int imx6_pcie_clk_enable(struct imx6_pcie *imx6_pcie) goto err_ref_clk; } - switch (imx6_pcie->drvdata->variant) { - case IMX8MM: - if (phy_power_on(imx6_pcie->phy)) - dev_err(dev, "unable to power on PHY\n"); - break; - default: - break; - } /* allow the clocks to stabilize */ usleep_range(200, 500); return 0; @@ -733,10 +725,6 @@ static int imx6_pcie_deassert_core_reset(struct imx6_pcie *imx6_pcie) case IMX8MQ: reset_control_deassert(imx6_pcie->pciephy_reset); break; - case IMX8MM: - if (phy_init(imx6_pcie->phy)) - dev_err(dev, "waiting for phy ready timeout!\n"); - break; case IMX7D: reset_control_deassert(imx6_pcie->pciephy_reset); @@ -772,6 +760,7 @@ static int imx6_pcie_deassert_core_reset(struct imx6_pcie *imx6_pcie) usleep_range(200, 500); break; case IMX6Q: /* Nothing to do */ + case IMX8MM: break; } @@ -923,15 +912,39 @@ static int imx6_pcie_host_init(struct pcie_port *pp) imx6_pcie_assert_core_reset(imx6_pcie); imx6_pcie_init_phy(imx6_pcie); + if (imx6_pcie->phy) { + ret = phy_power_on(imx6_pcie->phy); + if (ret) { + dev_err(dev, "pcie phy power up failed.\n"); + return ret; + } + } + ret = imx6_pcie_deassert_core_reset(imx6_pcie); if (ret < 0) { dev_err(dev, "pcie host init failed: %d\n", ret); - return ret; + goto err_phy_off; + } + if (imx6_pcie->phy) { + ret = phy_init(imx6_pcie->phy); + if (ret) { + dev_err(dev, "waiting for phy ready timeout!\n"); + goto err_phy_init; + } } imx6_setup_phy_mpll(imx6_pcie); return 0; + +err_phy_init: + imx6_pcie_clk_disable(imx6_pcie); + if (imx6_pcie->vpcie) + regulator_disable(imx6_pcie->vpcie); +err_phy_off: + if (imx6_pcie->phy) + phy_power_off(imx6_pcie->phy); + return ret; } static const struct dw_pcie_host_ops imx6_pcie_host_ops = { @@ -1029,18 +1042,47 @@ static int imx6_pcie_resume_noirq(struct device *dev) { struct imx6_pcie *imx6_pcie = dev_get_drvdata(dev); struct pcie_port *pp = &imx6_pcie->pci->pp; + int ret; if (!(imx6_pcie->drvdata->flags & IMX6_PCIE_FLAG_SUPPORTS_SUSPEND)) return 0; imx6_pcie_assert_core_reset(imx6_pcie); imx6_pcie_init_phy(imx6_pcie); - imx6_pcie_deassert_core_reset(imx6_pcie); + if (imx6_pcie->phy) { + ret = phy_power_on(imx6_pcie->phy); + if (ret) { + dev_err(dev, "pcie phy power up failed.\n"); + return ret; + } + } + + ret = imx6_pcie_deassert_core_reset(imx6_pcie); + if (ret < 0) { + dev_err(dev, "pcie deassert core reset failed: %d.\n", ret); + goto err_phy_off; + } else if (imx6_pcie->phy) { + ret = phy_init(imx6_pcie->phy); + if (ret) { + dev_err(dev, "pcie phy init failed.\n"); + goto err_phy_init; + } + } + dw_pcie_setup_rc(pp); if (imx6_pcie->link_is_up) imx6_pcie_start_link(imx6_pcie->pci); return 0; + +err_phy_init: + imx6_pcie_clk_disable(imx6_pcie); + if (imx6_pcie->vpcie) + regulator_disable(imx6_pcie->vpcie); +err_phy_off: + if (imx6_pcie->phy) + phy_power_off(imx6_pcie->phy); + return ret; } #endif -- 2.25.1
WARNING: multiple messages have this Message-ID (diff)
From: Bjorn Helgaas <helgaas@kernel.org> To: Richard Zhu <hongxing.zhu@nxp.com>, Lucas Stach <l.stach@pengutronix.de>, Rob Herring <robh+dt@kernel.org>, Mark Brown <broonie@kernel.org>, Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>, Fabio Estevam <festevam@gmail.com>, Francesco Dolcini <francesco.dolcini@toradex.com> Cc: linux-pci@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, kernel@pengutronix.de, linux-imx@nxp.com, Bjorn Helgaas <bhelgaas@google.com> Subject: [PATCH v12 12/13] PCI: imx6: Do not hide phy driver callbacks and refine the error handling Date: Wed, 15 Jun 2022 18:15:50 -0500 [thread overview] Message-ID: <20220615231551.1054753-13-helgaas@kernel.org> (raw) In-Reply-To: <20220615231551.1054753-1-helgaas@kernel.org> From: Richard Zhu <hongxing.zhu@nxp.com> - Move the phy_power_on() to host_init and resume functions from imx6_pcie_clk_enable(). - Move the phy_init() to host_init and resume functions from imx6_pcie_deassert_core_reset(). Refine the error handling in imx6_pcie_host_init() and imx6_pcie_resume_noirq() functions accordingly. [bhelgaas: add "ret" back since it's used again] Link: https://lore.kernel.org/r/1655189942-12678-9-git-send-email-hongxing.zhu@nxp.com Signed-off-by: Richard Zhu <hongxing.zhu@nxp.com> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com> --- drivers/pci/controller/dwc/pci-imx6.c | 70 +++++++++++++++++++++------ 1 file changed, 56 insertions(+), 14 deletions(-) diff --git a/drivers/pci/controller/dwc/pci-imx6.c b/drivers/pci/controller/dwc/pci-imx6.c index b6e5420d67b6..bd736aff94a3 100644 --- a/drivers/pci/controller/dwc/pci-imx6.c +++ b/drivers/pci/controller/dwc/pci-imx6.c @@ -639,14 +639,6 @@ static int imx6_pcie_clk_enable(struct imx6_pcie *imx6_pcie) goto err_ref_clk; } - switch (imx6_pcie->drvdata->variant) { - case IMX8MM: - if (phy_power_on(imx6_pcie->phy)) - dev_err(dev, "unable to power on PHY\n"); - break; - default: - break; - } /* allow the clocks to stabilize */ usleep_range(200, 500); return 0; @@ -733,10 +725,6 @@ static int imx6_pcie_deassert_core_reset(struct imx6_pcie *imx6_pcie) case IMX8MQ: reset_control_deassert(imx6_pcie->pciephy_reset); break; - case IMX8MM: - if (phy_init(imx6_pcie->phy)) - dev_err(dev, "waiting for phy ready timeout!\n"); - break; case IMX7D: reset_control_deassert(imx6_pcie->pciephy_reset); @@ -772,6 +760,7 @@ static int imx6_pcie_deassert_core_reset(struct imx6_pcie *imx6_pcie) usleep_range(200, 500); break; case IMX6Q: /* Nothing to do */ + case IMX8MM: break; } @@ -923,15 +912,39 @@ static int imx6_pcie_host_init(struct pcie_port *pp) imx6_pcie_assert_core_reset(imx6_pcie); imx6_pcie_init_phy(imx6_pcie); + if (imx6_pcie->phy) { + ret = phy_power_on(imx6_pcie->phy); + if (ret) { + dev_err(dev, "pcie phy power up failed.\n"); + return ret; + } + } + ret = imx6_pcie_deassert_core_reset(imx6_pcie); if (ret < 0) { dev_err(dev, "pcie host init failed: %d\n", ret); - return ret; + goto err_phy_off; + } + if (imx6_pcie->phy) { + ret = phy_init(imx6_pcie->phy); + if (ret) { + dev_err(dev, "waiting for phy ready timeout!\n"); + goto err_phy_init; + } } imx6_setup_phy_mpll(imx6_pcie); return 0; + +err_phy_init: + imx6_pcie_clk_disable(imx6_pcie); + if (imx6_pcie->vpcie) + regulator_disable(imx6_pcie->vpcie); +err_phy_off: + if (imx6_pcie->phy) + phy_power_off(imx6_pcie->phy); + return ret; } static const struct dw_pcie_host_ops imx6_pcie_host_ops = { @@ -1029,18 +1042,47 @@ static int imx6_pcie_resume_noirq(struct device *dev) { struct imx6_pcie *imx6_pcie = dev_get_drvdata(dev); struct pcie_port *pp = &imx6_pcie->pci->pp; + int ret; if (!(imx6_pcie->drvdata->flags & IMX6_PCIE_FLAG_SUPPORTS_SUSPEND)) return 0; imx6_pcie_assert_core_reset(imx6_pcie); imx6_pcie_init_phy(imx6_pcie); - imx6_pcie_deassert_core_reset(imx6_pcie); + if (imx6_pcie->phy) { + ret = phy_power_on(imx6_pcie->phy); + if (ret) { + dev_err(dev, "pcie phy power up failed.\n"); + return ret; + } + } + + ret = imx6_pcie_deassert_core_reset(imx6_pcie); + if (ret < 0) { + dev_err(dev, "pcie deassert core reset failed: %d.\n", ret); + goto err_phy_off; + } else if (imx6_pcie->phy) { + ret = phy_init(imx6_pcie->phy); + if (ret) { + dev_err(dev, "pcie phy init failed.\n"); + goto err_phy_init; + } + } + dw_pcie_setup_rc(pp); if (imx6_pcie->link_is_up) imx6_pcie_start_link(imx6_pcie->pci); return 0; + +err_phy_init: + imx6_pcie_clk_disable(imx6_pcie); + if (imx6_pcie->vpcie) + regulator_disable(imx6_pcie->vpcie); +err_phy_off: + if (imx6_pcie->phy) + phy_power_off(imx6_pcie->phy); + return ret; } #endif -- 2.25.1 _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
next prev parent reply other threads:[~2022-06-15 23:17 UTC|newest] Thread overview: 48+ messages / expand[flat|nested] mbox.gz Atom feed top 2022-06-15 23:15 [PATCH v12 00/13] PCI: imx6: refine codes and add the error propagation Bjorn Helgaas 2022-06-15 23:15 ` Bjorn Helgaas 2022-06-15 23:15 ` [PATCH v12 01/13] PCI: imx6: Move imx6_pcie_grp_offset(), imx6_pcie_configure_type() earlier Bjorn Helgaas 2022-06-15 23:15 ` Bjorn Helgaas 2022-06-16 2:23 ` Hongxing Zhu 2022-06-16 2:23 ` Hongxing Zhu 2022-06-15 23:15 ` [PATCH v12 02/13] PCI: imx6: Move PHY management functions together Bjorn Helgaas 2022-06-15 23:15 ` Bjorn Helgaas 2022-06-16 2:23 ` Hongxing Zhu 2022-06-16 2:23 ` Hongxing Zhu 2022-06-15 23:15 ` [PATCH v12 03/13] PCI: imx6: Move imx6_pcie_enable_ref_clk() earlier Bjorn Helgaas 2022-06-15 23:15 ` Bjorn Helgaas 2022-06-16 2:23 ` Hongxing Zhu 2022-06-16 2:23 ` Hongxing Zhu 2022-06-15 23:15 ` [PATCH v12 04/13] PCI: imx6: Move imx6_pcie_clk_disable() earlier Bjorn Helgaas 2022-06-15 23:15 ` Bjorn Helgaas 2022-06-15 23:15 ` [PATCH v12 05/13] PCI: imx6: Factor out ref clock disable to match enable Bjorn Helgaas 2022-06-15 23:15 ` Bjorn Helgaas 2022-06-16 2:23 ` Hongxing Zhu 2022-06-16 2:23 ` Hongxing Zhu 2022-06-15 23:15 ` [PATCH v12 06/13] PCI: imx6: Collect clock enables in imx6_pcie_clk_enable() Bjorn Helgaas 2022-06-15 23:15 ` Bjorn Helgaas 2022-06-15 23:15 ` [PATCH v12 07/13] PCI: imx6: Propagate .host_init() errors to caller Bjorn Helgaas 2022-06-15 23:15 ` Bjorn Helgaas 2022-06-15 23:15 ` [PATCH v12 08/13] PCI: imx6: Disable i.MX6QDL clock when disabling ref clocks Bjorn Helgaas 2022-06-15 23:15 ` Bjorn Helgaas 2022-06-15 23:15 ` [PATCH v12 09/13] PCI: imx6: Turn off regulator when system is in suspend mode Bjorn Helgaas 2022-06-15 23:15 ` Bjorn Helgaas 2022-06-15 23:30 ` Bjorn Helgaas 2022-06-15 23:30 ` Bjorn Helgaas 2022-06-16 2:23 ` Hongxing Zhu 2022-06-16 2:23 ` Hongxing Zhu 2022-06-16 15:56 ` Bjorn Helgaas 2022-06-16 15:56 ` Bjorn Helgaas 2022-06-17 5:57 ` Hongxing Zhu 2022-06-17 5:57 ` Hongxing Zhu 2022-06-15 23:15 ` [PATCH v12 10/13] PCI: imx6: Mark the link down as non-fatal error Bjorn Helgaas 2022-06-15 23:15 ` Bjorn Helgaas 2022-06-15 23:15 ` [PATCH v12 11/13] PCI: imx6: Reduce resume time by only starting link if it was up before suspend Bjorn Helgaas 2022-06-15 23:15 ` Bjorn Helgaas 2022-06-15 23:15 ` Bjorn Helgaas [this message] 2022-06-15 23:15 ` [PATCH v12 12/13] PCI: imx6: Do not hide phy driver callbacks and refine the error handling Bjorn Helgaas 2022-06-15 23:15 ` [PATCH v12 13/13] PCI: imx6: Disable clocks in reverse order of enable Bjorn Helgaas 2022-06-15 23:15 ` Bjorn Helgaas 2022-06-15 23:27 ` Bjorn Helgaas 2022-06-15 23:27 ` Bjorn Helgaas 2022-06-16 2:23 ` Hongxing Zhu 2022-06-16 2:23 ` Hongxing Zhu
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=20220615231551.1054753-13-helgaas@kernel.org \ --to=helgaas@kernel.org \ --cc=bhelgaas@google.com \ --cc=broonie@kernel.org \ --cc=festevam@gmail.com \ --cc=francesco.dolcini@toradex.com \ --cc=hongxing.zhu@nxp.com \ --cc=kernel@pengutronix.de \ --cc=l.stach@pengutronix.de \ --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 \ --cc=robh+dt@kernel.org \ /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: linkBe sure your reply has a Subject: header at the top and a blank line before the message body.
This is an external index of several public inboxes, see mirroring instructions on how to clone and mirror all data and code used by this external index.