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Ip=[211.75.126.7]; Helo=[NTHCCAS01.nuvoton.com] X-MS-Exchange-CrossTenant-AuthSource: SG2PEPF000B66CD.apcprd03.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: TYZPR03MB7956 X-Spam-Status: No, score=-0.1 required=5.0 tests=BAYES_00,DKIM_ADSP_CUSTOM_MED, DKIM_SIGNED,DKIM_VALID,FORGED_GMAIL_RCVD,FREEMAIL_FORGED_FROMDOMAIN, FREEMAIL_FROM,HEADER_FROM_DIFFERENT_DOMAINS,NML_ADSP_CUSTOM_MED, RCVD_IN_DNSWL_BLOCKED,RCVD_IN_MSPIKE_H2,SPF_HELO_PASS,SPF_PASS autolearn=no autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lindbergh.monkeyblade.net Adding CI_HDRC_FORCE_VBUS_ACTIVE_ALWAYS flag to modify the vbus_active parameter to active in case the ChipIdea USB IP role is device-only and there is no otgsc register. Signed-off-by: Tomer Maimon Acked-by: Peter Chen --- drivers/usb/chipidea/otg.c | 5 ++++- include/linux/usb/chipidea.h | 1 + 2 files changed, 5 insertions(+), 1 deletion(-) diff --git a/drivers/usb/chipidea/otg.c b/drivers/usb/chipidea/otg.c index f5490f2a5b6b..647e98f4e351 100644 --- a/drivers/usb/chipidea/otg.c +++ b/drivers/usb/chipidea/otg.c @@ -130,8 +130,11 @@ enum ci_role ci_otg_role(struct ci_hdrc *ci) void ci_handle_vbus_change(struct ci_hdrc *ci) { - if (!ci->is_otg) + if (!ci->is_otg) { + if (ci->platdata->flags & CI_HDRC_FORCE_VBUS_ACTIVE_ALWAYS) + usb_gadget_vbus_connect(&ci->gadget); return; + } if (hw_read_otgsc(ci, OTGSC_BSV) && !ci->vbus_active) usb_gadget_vbus_connect(&ci->gadget); diff --git a/include/linux/usb/chipidea.h b/include/linux/usb/chipidea.h index 0b4f2d5faa08..5a7f96684ea2 100644 --- a/include/linux/usb/chipidea.h +++ b/include/linux/usb/chipidea.h @@ -64,6 +64,7 @@ struct ci_hdrc_platform_data { #define CI_HDRC_PMQOS BIT(15) #define CI_HDRC_PHY_VBUS_CONTROL BIT(16) #define CI_HDRC_HAS_PORTSC_PEC_MISSED BIT(17) +#define CI_HDRC_FORCE_VBUS_ACTIVE_ALWAYS BIT(18) enum usb_dr_mode dr_mode; 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Signed-off-by: Tomer Maimon --- Documentation/devicetree/bindings/usb/ci-hdrc-usb2.yaml | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/Documentation/devicetree/bindings/usb/ci-hdrc-usb2.yaml b/Documentation/devicetree/bindings/usb/ci-hdrc-usb2.yaml index 1394557517b1..a9e173432002 100644 --- a/Documentation/devicetree/bindings/usb/ci-hdrc-usb2.yaml +++ b/Documentation/devicetree/bindings/usb/ci-hdrc-usb2.yaml @@ -16,6 +16,8 @@ properties: - enum: - chipidea,usb2 - lsi,zevio-usb + - nuvoton,npcm750-udc + - nuvoton,npcm845-udc - nvidia,tegra20-ehci - nvidia,tegra20-udc - nvidia,tegra30-ehci @@ -388,6 +390,8 @@ allOf: enum: - chipidea,usb2 - lsi,zevio-usb + - nuvoton,npcm750-udc + - nuvoton,npcm845-udc - nvidia,tegra20-udc - nvidia,tegra30-udc - nvidia,tegra114-udc From patchwork Mon Oct 2 16:13:50 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Tomer Maimon X-Patchwork-Id: 728699 Received: from lindbergh.monkeyblade.net (lindbergh.monkeyblade.net [23.128.96.19]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 555741DA41; 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Ip=[175.98.123.7]; Helo=[NTHCCAS04.nuvoton.com] X-MS-Exchange-CrossTenant-AuthSource: SG1PEPF000082E3.apcprd02.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: PSAPR03MB5525 X-Spam-Status: No, score=-0.1 required=5.0 tests=BAYES_00,DKIM_ADSP_CUSTOM_MED, DKIM_SIGNED,DKIM_VALID,FORGED_GMAIL_RCVD,FREEMAIL_FORGED_FROMDOMAIN, FREEMAIL_FROM,HEADER_FROM_DIFFERENT_DOMAINS,NML_ADSP_CUSTOM_MED, RCVD_IN_DNSWL_BLOCKED,RCVD_IN_MSPIKE_H2,SPF_HELO_PASS,SPF_PASS autolearn=no autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lindbergh.monkeyblade.net Add Nuvoton NPCM BMC SoCs support to USB ChipIdea driver. NPCM SoC include ChipIdea IP block that used for USB device controller mode. Signed-off-by: Tomer Maimon Acked-by: Peter Chen --- drivers/usb/chipidea/Kconfig | 4 + drivers/usb/chipidea/Makefile | 1 + drivers/usb/chipidea/ci_hdrc_npcm.c | 114 ++++++++++++++++++++++++++++ 3 files changed, 119 insertions(+) create mode 100644 drivers/usb/chipidea/ci_hdrc_npcm.c diff --git a/drivers/usb/chipidea/Kconfig b/drivers/usb/chipidea/Kconfig index c815824a0b2d..bab45bc62361 100644 --- a/drivers/usb/chipidea/Kconfig +++ b/drivers/usb/chipidea/Kconfig @@ -43,6 +43,10 @@ config USB_CHIPIDEA_MSM tristate "Enable MSM hsusb glue driver" if EXPERT default USB_CHIPIDEA +config USB_CHIPIDEA_NPCM + tristate "Enable NPCM hsusb glue driver" if EXPERT + default USB_CHIPIDEA + config USB_CHIPIDEA_IMX tristate "Enable i.MX USB glue driver" if EXPERT depends on OF diff --git a/drivers/usb/chipidea/Makefile b/drivers/usb/chipidea/Makefile index 71afeab97e83..718cb24603dd 100644 --- a/drivers/usb/chipidea/Makefile +++ b/drivers/usb/chipidea/Makefile @@ -13,6 +13,7 @@ ci_hdrc-$(CONFIG_USB_OTG_FSM) += otg_fsm.o obj-$(CONFIG_USB_CHIPIDEA_GENERIC) += ci_hdrc_usb2.o obj-$(CONFIG_USB_CHIPIDEA_MSM) += ci_hdrc_msm.o +obj-$(CONFIG_USB_CHIPIDEA_NPCM) += ci_hdrc_npcm.o obj-$(CONFIG_USB_CHIPIDEA_PCI) += ci_hdrc_pci.o obj-$(CONFIG_USB_CHIPIDEA_IMX) += usbmisc_imx.o ci_hdrc_imx.o obj-$(CONFIG_USB_CHIPIDEA_TEGRA) += ci_hdrc_tegra.o diff --git a/drivers/usb/chipidea/ci_hdrc_npcm.c b/drivers/usb/chipidea/ci_hdrc_npcm.c new file mode 100644 index 000000000000..37b64a3dbd96 --- /dev/null +++ b/drivers/usb/chipidea/ci_hdrc_npcm.c @@ -0,0 +1,114 @@ +// SPDX-License-Identifier: GPL-2.0 +// Copyright (c) 2023 Nuvoton Technology corporation. + +#include +#include +#include +#include +#include +#include +#include +#include + +#include "ci.h" + +struct npcm_udc_data { + struct platform_device *ci; + struct clk *core_clk; + struct ci_hdrc_platform_data pdata; +}; + +static int npcm_udc_notify_event(struct ci_hdrc *ci, unsigned event) +{ + struct device *dev = ci->dev->parent; + + switch (event) { + case CI_HDRC_CONTROLLER_RESET_EVENT: + /* clear all mode bits */ + hw_write(ci, OP_USBMODE, 0xffffffff, 0x0); + break; + default: + dev_dbg(dev, "unknown ci_hdrc event\n"); + break; + } + + return 0; +} + +static int npcm_udc_probe(struct platform_device *pdev) +{ + int ret; + struct npcm_udc_data *ci; + struct platform_device *plat_ci; + struct device *dev = &pdev->dev; + + ci = devm_kzalloc(&pdev->dev, sizeof(*ci), GFP_KERNEL); + if (!ci) + return -ENOMEM; + platform_set_drvdata(pdev, ci); + + ci->core_clk = devm_clk_get_optional(dev, NULL); + if (IS_ERR(ci->core_clk)) + return PTR_ERR(ci->core_clk); + + ret = clk_prepare_enable(ci->core_clk); + if (ret) + return dev_err_probe(dev, ret, "failed to enable the clock: %d\n", ret); + + ci->pdata.name = dev_name(dev); + ci->pdata.capoffset = DEF_CAPOFFSET; + ci->pdata.flags = CI_HDRC_REQUIRES_ALIGNED_DMA | + CI_HDRC_FORCE_VBUS_ACTIVE_ALWAYS; + ci->pdata.phy_mode = USBPHY_INTERFACE_MODE_UTMI; + ci->pdata.notify_event = npcm_udc_notify_event; + + plat_ci = ci_hdrc_add_device(dev, pdev->resource, pdev->num_resources, + &ci->pdata); + if (IS_ERR(plat_ci)) { + ret = PTR_ERR(plat_ci); + dev_err(dev, "failed to register HDRC NPCM device: %d\n", ret); + goto clk_err; + } + + pm_runtime_no_callbacks(dev); + pm_runtime_enable(dev); + + return 0; + +clk_err: + clk_disable_unprepare(ci->core_clk); + return ret; +} + +static int npcm_udc_remove(struct platform_device *pdev) +{ + struct npcm_udc_data *ci = platform_get_drvdata(pdev); + + pm_runtime_disable(&pdev->dev); + ci_hdrc_remove_device(ci->ci); + clk_disable_unprepare(ci->core_clk); + + return 0; +} + +static const struct of_device_id npcm_udc_dt_match[] = { + { .compatible = "nuvoton,npcm750-udc", }, + { .compatible = "nuvoton,npcm845-udc", }, + { } +}; +MODULE_DEVICE_TABLE(of, npcm_udc_dt_match); + +static struct platform_driver npcm_udc_driver = { + .probe = npcm_udc_probe, + .remove = npcm_udc_remove, + .driver = { + .name = "npcm_udc", + .of_match_table = npcm_udc_dt_match, + }, +}; + +module_platform_driver(npcm_udc_driver); + +MODULE_DESCRIPTION("NPCM USB device controller driver"); +MODULE_AUTHOR("Tomer Maimon "); +MODULE_LICENSE("GPL v2");