From patchwork Thu Nov 14 05:34:10 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Even Xu X-Patchwork-Id: 843284 Received: from mgamail.intel.com (mgamail.intel.com [192.198.163.18]) (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 C7C421F8189; Thu, 14 Nov 2024 05:35:14 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=192.198.163.18 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1731562516; cv=none; b=HSY6hzZuRM4VqQOb36/2ztQ3DkyANokmswsQ2yGrEv5kPaHqcI2AmkEraVE+MJGJHFO4eztn2XQHyhFXMSTL5AicdY4su8z2/1n25IemNvuiAsIXWU18A1VLHmP48RoBv9hhuuz/FqpJzwnXZHFyO0rUXHy66X4I6g8YMByXfVk= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1731562516; c=relaxed/simple; bh=5yCUFzs3zN1FfZluvljTmuMj+BFmI1yA7vXRGfz2/eY=; h=From:To:Cc:Subject:Date:Message-Id:In-Reply-To:References: MIME-Version; b=kpbA/ZM5dQnLymQfl5wnEgHuo6TONKxinbPl7H+EmwFZYc8q1KW+g5qTXdhD+oWElbGpxmYl6Fvqo1dQ+tqLYS6Lcezsoc5zLTFVfs64UEIrgOIUOH5S8aGi368PapaOAvCwsHXxXH+Db7WjG08belHZvJLlX0QCFvPLM2KMWBM= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=intel.com; spf=pass smtp.mailfrom=intel.com; dkim=pass (2048-bit key) header.d=intel.com header.i=@intel.com header.b=Kkcsaa8d; arc=none smtp.client-ip=192.198.163.18 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=intel.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=intel.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=intel.com header.i=@intel.com header.b="Kkcsaa8d" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1731562514; x=1763098514; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=5yCUFzs3zN1FfZluvljTmuMj+BFmI1yA7vXRGfz2/eY=; b=Kkcsaa8dC5+IQK5l1CL30DR0XVMUVFP1rl5vvZbRcih26iSLHyqWgJBo a1cGqmHtxLtVARog6xA25U5k2+GRc4Hbj9mhaNuXwvaS0NxR5nOdPn+Nx iffEWXfbh1cU91wpnk2y0dQ83F7jWWqjTWSxT7pYu09Y8R2r8/JkUhkVs ZXl6O7BIDlwmedSv2es3wJf+Mh9bEj/f24hh5hcWKkLEYuTNuF+e/V0Q+ woi/0psMZfU9sYM7D6oo+YR8/f3Pi26ALYdiNbWaJSl037037v1YWvGSj DKu10nmZmHMoSN/7Di8OOxNyP+cgOHLNYtHLr0CQ6MNXDpT4gCZlaD5ns A==; X-CSE-ConnectionGUID: omHAWzEsQC+xCtPlXrlYrw== X-CSE-MsgGUID: D5zBv/OERs+Sjk086OE21Q== X-IronPort-AV: E=McAfee;i="6700,10204,11255"; a="30869127" X-IronPort-AV: E=Sophos;i="6.12,153,1728975600"; d="scan'208";a="30869127" Received: from fmviesa004.fm.intel.com ([10.60.135.144]) by fmvoesa112.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 13 Nov 2024 21:35:14 -0800 X-CSE-ConnectionGUID: k8dRpgDHSTGTPUD0SKFv+g== X-CSE-MsgGUID: 1GuLbWFpSQOmbyDbNC3fPQ== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.12,153,1728975600"; d="scan'208";a="92891682" Received: from shsensorbuild.sh.intel.com ([10.239.133.18]) by fmviesa004.fm.intel.com with ESMTP; 13 Nov 2024 21:35:11 -0800 From: Even Xu To: jikos@kernel.org, bentiss@kernel.org, corbet@lwn.net, bagasdotme@gmail.com, aaron.ma@canonical.com Cc: linux-input@vger.kernel.org, linux-kernel@vger.kernel.org, linux-doc@vger.kernel.org, Even Xu , Xinpeng Sun , Rui Zhang , Srinivas Pandruvada Subject: [PATCH v2 16/22] HID: intel-thc-hid: intel-quickspi: Add PM implementation Date: Thu, 14 Nov 2024 13:34:10 +0800 Message-Id: <20241114053416.4085715-17-even.xu@intel.com> X-Mailer: git-send-email 2.40.1 In-Reply-To: <20241114053416.4085715-1-even.xu@intel.com> References: <20241114053416.4085715-1-even.xu@intel.com> Precedence: bulk X-Mailing-List: linux-input@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Implement THC QuickSPI driver power management callbacks. Co-developed-by: Xinpeng Sun Signed-off-by: Xinpeng Sun Signed-off-by: Even Xu Tested-by: Rui Zhang Reviewed-by: Srinivas Pandruvada --- .../intel-quickspi/pci-quickspi.c | 246 ++++++++++++++++++ .../intel-quickspi/quickspi-dev.h | 8 + .../intel-quickspi/quickspi-hid.c | 8 + 3 files changed, 262 insertions(+) diff --git a/drivers/hid/intel-thc-hid/intel-quickspi/pci-quickspi.c b/drivers/hid/intel-thc-hid/intel-quickspi/pci-quickspi.c index 73be89933f1e..9c0df1163bcd 100644 --- a/drivers/hid/intel-thc-hid/intel-quickspi/pci-quickspi.c +++ b/drivers/hid/intel-thc-hid/intel-quickspi/pci-quickspi.c @@ -9,6 +9,7 @@ #include #include #include +#include #include "intel-thc-dev.h" #include "intel-thc-hw.h" @@ -281,6 +282,10 @@ static irqreturn_t quickspi_irq_thread_handler(int irq, void *dev_id) if (qsdev->state == QUICKSPI_DISABLED) return IRQ_HANDLED; + ret = pm_runtime_resume_and_get(qsdev->dev); + if (ret) + return IRQ_HANDLED; + int_mask = thc_interrupt_handler(qsdev->thc_hw); if (int_mask & BIT(THC_FATAL_ERR_INT) || int_mask & BIT(THC_TXN_ERR_INT)) { @@ -318,6 +323,9 @@ static irqreturn_t quickspi_irq_thread_handler(int irq, void *dev_id) if (try_recover(qsdev)) qsdev->state = QUICKSPI_DISABLED; + pm_runtime_mark_last_busy(qsdev->dev); + pm_runtime_put_autosuspend(qsdev->dev); + return IRQ_HANDLED; } @@ -641,6 +649,13 @@ static int quickspi_probe(struct pci_dev *pdev, qsdev->state = QUICKSPI_ENABLED; + /* Enable runtime power management */ + pm_runtime_use_autosuspend(qsdev->dev); + pm_runtime_set_autosuspend_delay(qsdev->dev, DEFAULT_AUTO_SUSPEND_DELAY_MS); + pm_runtime_mark_last_busy(qsdev->dev); + pm_runtime_put_noidle(qsdev->dev); + pm_runtime_put_autosuspend(qsdev->dev); + dev_dbg(&pdev->dev, "QuickSPI probe success\n"); return 0; @@ -677,6 +692,8 @@ static void quickspi_remove(struct pci_dev *pdev) quickspi_hid_remove(qsdev); quickspi_dma_deinit(qsdev); + pm_runtime_get_noresume(qsdev->dev); + quickspi_dev_deinit(qsdev); pcim_iounmap_regions(pdev, BIT(0)); @@ -707,6 +724,234 @@ static void quickspi_shutdown(struct pci_dev *pdev) quickspi_dev_deinit(qsdev); } +static int quickspi_suspend(struct device *device) +{ + struct pci_dev *pdev = to_pci_dev(device); + struct quickspi_device *qsdev; + int ret; + + qsdev = pci_get_drvdata(pdev); + if (!qsdev) + return -ENODEV; + + ret = quickspi_set_power(qsdev, HIDSPI_SLEEP); + if (ret) + return ret; + + ret = thc_interrupt_quiesce(qsdev->thc_hw, true); + if (ret) + return ret; + + thc_interrupt_enable(qsdev->thc_hw, false); + + thc_dma_unconfigure(qsdev->thc_hw); + + return 0; +} + +static int quickspi_resume(struct device *device) +{ + struct pci_dev *pdev = to_pci_dev(device); + struct quickspi_device *qsdev; + int ret; + + qsdev = pci_get_drvdata(pdev); + if (!qsdev) + return -ENODEV; + + ret = thc_port_select(qsdev->thc_hw, THC_PORT_TYPE_SPI); + if (ret) + return ret; + + thc_interrupt_config(qsdev->thc_hw); + + thc_interrupt_enable(qsdev->thc_hw, true); + + ret = thc_dma_configure(qsdev->thc_hw); + if (ret) + return ret; + + ret = thc_interrupt_quiesce(qsdev->thc_hw, false); + if (ret) + return ret; + + ret = quickspi_set_power(qsdev, HIDSPI_ON); + if (ret) + return ret; + + return 0; +} + +static int quickspi_freeze(struct device *device) +{ + struct pci_dev *pdev = to_pci_dev(device); + struct quickspi_device *qsdev; + int ret; + + qsdev = pci_get_drvdata(pdev); + if (!qsdev) + return -ENODEV; + + ret = thc_interrupt_quiesce(qsdev->thc_hw, true); + if (ret) + return ret; + + thc_interrupt_enable(qsdev->thc_hw, false); + + thc_dma_unconfigure(qsdev->thc_hw); + + return 0; +} + +static int quickspi_thaw(struct device *device) +{ + struct pci_dev *pdev = to_pci_dev(device); + struct quickspi_device *qsdev; + int ret; + + qsdev = pci_get_drvdata(pdev); + if (!qsdev) + return -ENODEV; + + ret = thc_dma_configure(qsdev->thc_hw); + if (ret) + return ret; + + thc_interrupt_enable(qsdev->thc_hw, true); + + ret = thc_interrupt_quiesce(qsdev->thc_hw, false); + if (ret) + return ret; + + return 0; +} + +static int quickspi_poweroff(struct device *device) +{ + struct pci_dev *pdev = to_pci_dev(device); + struct quickspi_device *qsdev; + int ret; + + qsdev = pci_get_drvdata(pdev); + if (!qsdev) + return -ENODEV; + + ret = thc_interrupt_quiesce(qsdev->thc_hw, true); + if (ret) + return ret; + + thc_interrupt_enable(qsdev->thc_hw, false); + + thc_ltr_unconfig(qsdev->thc_hw); + + quickspi_dma_deinit(qsdev); + + return 0; +} + +static int quickspi_restore(struct device *device) +{ + struct pci_dev *pdev = to_pci_dev(device); + struct quickspi_device *qsdev; + int ret; + + qsdev = pci_get_drvdata(pdev); + if (!qsdev) + return -ENODEV; + + /* Reconfig THC HW when back from hibernate */ + ret = thc_port_select(qsdev->thc_hw, THC_PORT_TYPE_SPI); + if (ret) + return ret; + + thc_spi_input_output_address_config(qsdev->thc_hw, + qsdev->input_report_hdr_addr, + qsdev->input_report_bdy_addr, + qsdev->output_report_addr); + + ret = thc_spi_read_config(qsdev->thc_hw, qsdev->spi_freq_val, + qsdev->spi_read_io_mode, + qsdev->spi_read_opcode, + qsdev->spi_packet_size); + if (ret) + return ret; + + ret = thc_spi_write_config(qsdev->thc_hw, qsdev->spi_freq_val, + qsdev->spi_write_io_mode, + qsdev->spi_write_opcode, + qsdev->spi_packet_size, + qsdev->performance_limit); + if (ret) + return ret; + + thc_interrupt_config(qsdev->thc_hw); + + thc_interrupt_enable(qsdev->thc_hw, true); + + ret = thc_interrupt_quiesce(qsdev->thc_hw, false); + if (ret) + return ret; + + /* TIC may lose power, needs go through reset flow */ + ret = reset_tic(qsdev); + if (ret) + return ret; + + ret = thc_dma_configure(qsdev->thc_hw); + if (ret) + return ret; + + thc_ltr_config(qsdev->thc_hw, + qsdev->active_ltr_val, + qsdev->low_power_ltr_val); + + thc_change_ltr_mode(qsdev->thc_hw, THC_LTR_MODE_ACTIVE); + + return 0; +} + +static int quickspi_runtime_suspend(struct device *device) +{ + struct pci_dev *pdev = to_pci_dev(device); + struct quickspi_device *qsdev; + + qsdev = pci_get_drvdata(pdev); + if (!qsdev) + return -ENODEV; + + thc_change_ltr_mode(qsdev->thc_hw, THC_LTR_MODE_LP); + + pci_save_state(pdev); + + return 0; +} + +static int quickspi_runtime_resume(struct device *device) +{ + struct pci_dev *pdev = to_pci_dev(device); + struct quickspi_device *qsdev; + + qsdev = pci_get_drvdata(pdev); + if (!qsdev) + return -ENODEV; + + thc_change_ltr_mode(qsdev->thc_hw, THC_LTR_MODE_ACTIVE); + + return 0; +} + +static const struct dev_pm_ops quickspi_pm_ops = { + .suspend = quickspi_suspend, + .resume = quickspi_resume, + .freeze = quickspi_freeze, + .thaw = quickspi_thaw, + .poweroff = quickspi_poweroff, + .restore = quickspi_restore, + .runtime_suspend = quickspi_runtime_suspend, + .runtime_resume = quickspi_runtime_resume, + .runtime_idle = NULL, +}; + static const struct pci_device_id quickspi_pci_tbl[] = { {PCI_DEVICE_DATA(INTEL, THC_MTL_DEVICE_ID_SPI_PORT1, &mtl), }, {PCI_DEVICE_DATA(INTEL, THC_MTL_DEVICE_ID_SPI_PORT2, &mtl), }, @@ -726,6 +971,7 @@ static struct pci_driver quickspi_driver = { .probe = quickspi_probe, .remove = quickspi_remove, .shutdown = quickspi_shutdown, + .driver.pm = &quickspi_pm_ops, .driver.probe_type = PROBE_PREFER_ASYNCHRONOUS, }; diff --git a/drivers/hid/intel-thc-hid/intel-quickspi/quickspi-dev.h b/drivers/hid/intel-thc-hid/intel-quickspi/quickspi-dev.h index 49b0322b9ebb..c7400667cd70 100644 --- a/drivers/hid/intel-thc-hid/intel-quickspi/quickspi-dev.h +++ b/drivers/hid/intel-thc-hid/intel-quickspi/quickspi-dev.h @@ -47,6 +47,14 @@ #define MAX_PACKET_SIZE_VALUE_MTL 128 #define MAX_PACKET_SIZE_VALUE_LNL 256 +/* + * THC uses runtime auto suspend to dynamically switch between THC active LTR + * and low power LTR to save CPU power. + * Default value is 5000ms, that means if no touch event in this time, THC will + * change to low power LTR mode. + */ +#define DEFAULT_AUTO_SUSPEND_DELAY_MS 5000 + enum quickspi_dev_state { QUICKSPI_NONE, QUICKSPI_RESETING, diff --git a/drivers/hid/intel-thc-hid/intel-quickspi/quickspi-hid.c b/drivers/hid/intel-thc-hid/intel-quickspi/quickspi-hid.c index 2553d4b42b51..ad52e402c28a 100644 --- a/drivers/hid/intel-thc-hid/intel-quickspi/quickspi-hid.c +++ b/drivers/hid/intel-thc-hid/intel-quickspi/quickspi-hid.c @@ -3,6 +3,7 @@ #include #include +#include #include "quickspi-dev.h" #include "quickspi-hid.h" @@ -54,6 +55,10 @@ static int quickspi_hid_raw_request(struct hid_device *hid, struct quickspi_device *qsdev = hid->driver_data; int ret = 0; + ret = pm_runtime_resume_and_get(qsdev->dev); + if (ret) + return ret; + switch (reqtype) { case HID_REQ_GET_REPORT: ret = quickspi_get_report(qsdev, rtype, reportnum, buf); @@ -66,6 +71,9 @@ static int quickspi_hid_raw_request(struct hid_device *hid, break; } + pm_runtime_mark_last_busy(qsdev->dev); + pm_runtime_put_autosuspend(qsdev->dev); + return ret; }