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Date: Sat, 22 Jan 2022 05:33:28 +0800
From: kernel test robot <lkp@...el.com>
To: Chevron Li <chevron.li@...hubtech.com>, adrian.hunter@...el.com,
ulf.hansson@...aro.org, agross@...nel.org,
bjorn.andersson@...aro.org, linux-mmc@...r.kernel.org,
linux-arm-msm@...r.kernel.org, linux-kernel@...r.kernel.org
Cc: kbuild-all@...ts.01.org, shirley.her@...hubtech.com,
fred.ai@...hubtech.com, xiaoguang.yu@...hubtech.com
Subject: Re: [PATCH 1/2] mmc:sdhci-msm:fix Qualcomm sd host 7180 SD card
compatibility issue
Hi Chevron,
Thank you for the patch! Perhaps something to improve:
[auto build test WARNING on c9e6606c7fe92b50a02ce51dda82586ebdf99b48]
url: https://github.com/0day-ci/linux/commits/Chevron-Li/mmc-sdhci-msm-fix-Qualcomm-sd-host-7180-SD-card-compatibility-issue/20220121-191113
base: c9e6606c7fe92b50a02ce51dda82586ebdf99b48
config: arc-randconfig-r043-20220121 (https://download.01.org/0day-ci/archive/20220122/202201220531.njLkAypI-lkp@intel.com/config)
compiler: arceb-elf-gcc (GCC) 11.2.0
reproduce (this is a W=1 build):
wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
chmod +x ~/bin/make.cross
# https://github.com/0day-ci/linux/commit/bba780c9359fe89c2a3e769bfa6373f58b90ee76
git remote add linux-review https://github.com/0day-ci/linux
git fetch --no-tags linux-review Chevron-Li/mmc-sdhci-msm-fix-Qualcomm-sd-host-7180-SD-card-compatibility-issue/20220121-191113
git checkout bba780c9359fe89c2a3e769bfa6373f58b90ee76
# save the config file to linux build tree
mkdir build_dir
COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-11.2.0 make.cross O=build_dir ARCH=arc SHELL=/bin/bash
If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@...el.com>
All warnings (new ones prefixed by >>):
drivers/mmc/host/sdhci-msm.c: In function 'sdhci_msm_probe':
>> drivers/mmc/host/sdhci-msm.c:2535:40: warning: variable 'bht_host' set but not used [-Wunused-but-set-variable]
2535 | struct sdhci_bht_host *bht_host;
| ^~~~~~~~
vim +/bht_host +2535 drivers/mmc/host/sdhci-msm.c
2498
2499
2500 static int sdhci_msm_probe(struct platform_device *pdev)
2501 {
2502 struct sdhci_host *host;
2503 struct sdhci_pltfm_host *pltfm_host;
2504 struct sdhci_msm_host *msm_host;
2505 struct clk *clk;
2506 int ret;
2507 u16 host_version, core_minor;
2508 u32 core_version, config;
2509 u8 core_major;
2510 const struct sdhci_msm_offset *msm_offset;
2511 const struct sdhci_msm_variant_info *var_info;
2512 struct device_node *node = pdev->dev.of_node;
2513
2514 /* Bayhub patch: memory allocate for sdhci_bht_host structure */
2515 if (of_find_property(node, "use-bayhub-bh201", NULL))
2516 host = sdhci_pltfm_init(pdev, &sdhci_msm_pdata,
2517 sizeof(*msm_host) + sizeof(struct sdhci_bht_host));
2518 else
2519 host = sdhci_pltfm_init(pdev, &sdhci_msm_pdata, sizeof(*msm_host));
2520 if (IS_ERR(host))
2521 return PTR_ERR(host);
2522
2523 host->sdma_boundary = 0;
2524 pltfm_host = sdhci_priv(host);
2525 msm_host = sdhci_pltfm_priv(pltfm_host);
2526 msm_host->mmc = host->mmc;
2527 msm_host->pdev = pdev;
2528
2529 ret = mmc_of_parse(host->mmc);
2530 if (ret)
2531 goto pltfm_free;
2532
2533 /* Bayhub patch: resource assign and mmc_rescan routine overload */
2534 if (of_find_property(node, "use-bayhub-bh201", NULL)) {
> 2535 struct sdhci_bht_host *bht_host;
2536
2537 bht_host = sdhci_msm_priv(msm_host);
2538 sdhci_bht_parse(msm_host->mmc);
2539 INIT_DELAYED_WORK(&host->mmc->detect, mmc_rescan_bht);
2540 }
2541
2542 /*
2543 * Based on the compatible string, load the required msm host info from
2544 * the data associated with the version info.
2545 */
2546 var_info = of_device_get_match_data(&pdev->dev);
2547
2548 msm_host->mci_removed = var_info->mci_removed;
2549 msm_host->restore_dll_config = var_info->restore_dll_config;
2550 msm_host->var_ops = var_info->var_ops;
2551 msm_host->offset = var_info->offset;
2552
2553 msm_offset = msm_host->offset;
2554
2555 sdhci_get_of_property(pdev);
2556 sdhci_msm_get_of_property(pdev, host);
2557
2558 msm_host->saved_tuning_phase = INVALID_TUNING_PHASE;
2559
2560 /* Setup SDCC bus voter clock. */
2561 msm_host->bus_clk = devm_clk_get(&pdev->dev, "bus");
2562 if (!IS_ERR(msm_host->bus_clk)) {
2563 /* Vote for max. clk rate for max. performance */
2564 ret = clk_set_rate(msm_host->bus_clk, INT_MAX);
2565 if (ret)
2566 goto pltfm_free;
2567 ret = clk_prepare_enable(msm_host->bus_clk);
2568 if (ret)
2569 goto pltfm_free;
2570 }
2571
2572 /* Setup main peripheral bus clock */
2573 clk = devm_clk_get(&pdev->dev, "iface");
2574 if (IS_ERR(clk)) {
2575 ret = PTR_ERR(clk);
2576 dev_err(&pdev->dev, "Peripheral clk setup failed (%d)\n", ret);
2577 goto bus_clk_disable;
2578 }
2579 msm_host->bulk_clks[1].clk = clk;
2580
2581 /* Setup SDC MMC clock */
2582 clk = devm_clk_get(&pdev->dev, "core");
2583 if (IS_ERR(clk)) {
2584 ret = PTR_ERR(clk);
2585 dev_err(&pdev->dev, "SDC MMC clk setup failed (%d)\n", ret);
2586 goto bus_clk_disable;
2587 }
2588 msm_host->bulk_clks[0].clk = clk;
2589
2590 /* Check for optional interconnect paths */
2591 ret = dev_pm_opp_of_find_icc_paths(&pdev->dev, NULL);
2592 if (ret)
2593 goto bus_clk_disable;
2594
2595 ret = devm_pm_opp_set_clkname(&pdev->dev, "core");
2596 if (ret)
2597 goto bus_clk_disable;
2598
2599 /* OPP table is optional */
2600 ret = devm_pm_opp_of_add_table(&pdev->dev);
2601 if (ret && ret != -ENODEV) {
2602 dev_err(&pdev->dev, "Invalid OPP table in Device tree\n");
2603 goto bus_clk_disable;
2604 }
2605
2606 /* Vote for maximum clock rate for maximum performance */
2607 ret = dev_pm_opp_set_rate(&pdev->dev, INT_MAX);
2608 if (ret)
2609 dev_warn(&pdev->dev, "core clock boost failed\n");
2610
2611 clk = devm_clk_get(&pdev->dev, "cal");
2612 if (IS_ERR(clk))
2613 clk = NULL;
2614 msm_host->bulk_clks[2].clk = clk;
2615
2616 clk = devm_clk_get(&pdev->dev, "sleep");
2617 if (IS_ERR(clk))
2618 clk = NULL;
2619 msm_host->bulk_clks[3].clk = clk;
2620
2621 clk = sdhci_msm_ice_get_clk(&pdev->dev);
2622 if (IS_ERR(clk))
2623 clk = NULL;
2624 msm_host->bulk_clks[4].clk = clk;
2625
2626 ret = clk_bulk_prepare_enable(ARRAY_SIZE(msm_host->bulk_clks),
2627 msm_host->bulk_clks);
2628 if (ret)
2629 goto bus_clk_disable;
2630
2631 /*
2632 * xo clock is needed for FLL feature of cm_dll.
2633 * In case if xo clock is not mentioned in DT, warn and proceed.
2634 */
2635 msm_host->xo_clk = devm_clk_get(&pdev->dev, "xo");
2636 if (IS_ERR(msm_host->xo_clk)) {
2637 ret = PTR_ERR(msm_host->xo_clk);
2638 dev_warn(&pdev->dev, "TCXO clk not present (%d)\n", ret);
2639 }
2640
2641 if (!msm_host->mci_removed) {
2642 msm_host->core_mem = devm_platform_ioremap_resource(pdev, 1);
2643 if (IS_ERR(msm_host->core_mem)) {
2644 ret = PTR_ERR(msm_host->core_mem);
2645 goto clk_disable;
2646 }
2647 }
2648
2649 /* Reset the vendor spec register to power on reset state */
2650 writel_relaxed(CORE_VENDOR_SPEC_POR_VAL,
2651 host->ioaddr + msm_offset->core_vendor_spec);
2652
2653 if (!msm_host->mci_removed) {
2654 /* Set HC_MODE_EN bit in HC_MODE register */
2655 msm_host_writel(msm_host, HC_MODE_EN, host,
2656 msm_offset->core_hc_mode);
2657 config = msm_host_readl(msm_host, host,
2658 msm_offset->core_hc_mode);
2659 config |= FF_CLK_SW_RST_DIS;
2660 msm_host_writel(msm_host, config, host,
2661 msm_offset->core_hc_mode);
2662 }
2663
2664 host_version = readw_relaxed((host->ioaddr + SDHCI_HOST_VERSION));
2665 dev_dbg(&pdev->dev, "Host Version: 0x%x Vendor Version 0x%x\n",
2666 host_version, ((host_version & SDHCI_VENDOR_VER_MASK) >>
2667 SDHCI_VENDOR_VER_SHIFT));
2668
2669 core_version = msm_host_readl(msm_host, host,
2670 msm_offset->core_mci_version);
2671 core_major = (core_version & CORE_VERSION_MAJOR_MASK) >>
2672 CORE_VERSION_MAJOR_SHIFT;
2673 core_minor = core_version & CORE_VERSION_MINOR_MASK;
2674 dev_dbg(&pdev->dev, "MCI Version: 0x%08x, major: 0x%04x, minor: 0x%02x\n",
2675 core_version, core_major, core_minor);
2676
2677 if (core_major == 1 && core_minor >= 0x42)
2678 msm_host->use_14lpp_dll_reset = true;
2679
2680 /*
2681 * SDCC 5 controller with major version 1, minor version 0x34 and later
2682 * with HS 400 mode support will use CM DLL instead of CDC LP 533 DLL.
2683 */
2684 if (core_major == 1 && core_minor < 0x34)
2685 msm_host->use_cdclp533 = true;
2686
2687 /*
2688 * Support for some capabilities is not advertised by newer
2689 * controller versions and must be explicitly enabled.
2690 */
2691 if (core_major >= 1 && core_minor != 0x11 && core_minor != 0x12) {
2692 config = readl_relaxed(host->ioaddr + SDHCI_CAPABILITIES);
2693 config |= SDHCI_CAN_VDD_300 | SDHCI_CAN_DO_8BIT;
2694 writel_relaxed(config, host->ioaddr +
2695 msm_offset->core_vendor_spec_capabilities0);
2696 }
2697
2698 if (core_major == 1 && core_minor >= 0x49)
2699 msm_host->updated_ddr_cfg = true;
2700
2701 if (core_major == 1 && core_minor >= 0x71)
2702 msm_host->uses_tassadar_dll = true;
2703
2704 ret = sdhci_msm_register_vreg(msm_host);
2705 if (ret)
2706 goto clk_disable;
2707
2708 /*
2709 * Power on reset state may trigger power irq if previous status of
2710 * PWRCTL was either BUS_ON or IO_HIGH_V. So before enabling pwr irq
2711 * interrupt in GIC, any pending power irq interrupt should be
2712 * acknowledged. Otherwise power irq interrupt handler would be
2713 * fired prematurely.
2714 */
2715 sdhci_msm_handle_pwr_irq(host, 0);
2716
2717 /*
2718 * Ensure that above writes are propogated before interrupt enablement
2719 * in GIC.
2720 */
2721 mb();
2722
2723 /* Setup IRQ for handling power/voltage tasks with PMIC */
2724 msm_host->pwr_irq = platform_get_irq_byname(pdev, "pwr_irq");
2725 if (msm_host->pwr_irq < 0) {
2726 ret = msm_host->pwr_irq;
2727 goto clk_disable;
2728 }
2729
2730 sdhci_msm_init_pwr_irq_wait(msm_host);
2731 /* Enable pwr irq interrupts */
2732 msm_host_writel(msm_host, INT_MASK, host,
2733 msm_offset->core_pwrctl_mask);
2734
2735 ret = devm_request_threaded_irq(&pdev->dev, msm_host->pwr_irq, NULL,
2736 sdhci_msm_pwr_irq, IRQF_ONESHOT,
2737 dev_name(&pdev->dev), host);
2738 if (ret) {
2739 dev_err(&pdev->dev, "Request IRQ failed (%d)\n", ret);
2740 goto clk_disable;
2741 }
2742
2743 msm_host->mmc->caps |= MMC_CAP_WAIT_WHILE_BUSY | MMC_CAP_NEED_RSP_BUSY;
2744
2745 /* Set the timeout value to max possible */
2746 host->max_timeout_count = 0xF;
2747
2748 pm_runtime_get_noresume(&pdev->dev);
2749 pm_runtime_set_active(&pdev->dev);
2750 pm_runtime_enable(&pdev->dev);
2751 pm_runtime_set_autosuspend_delay(&pdev->dev,
2752 MSM_MMC_AUTOSUSPEND_DELAY_MS);
2753 pm_runtime_use_autosuspend(&pdev->dev);
2754
2755 host->mmc_host_ops.start_signal_voltage_switch =
2756 sdhci_msm_start_signal_voltage_switch;
2757 host->mmc_host_ops.execute_tuning = sdhci_msm_execute_tuning;
2758 /* Bayhub patch: overload the mmc_host_ops.execute_tuning routine */
2759 if (of_find_property(node, "use-bayhub-bh201", NULL))
2760 host->mmc_host_ops.execute_tuning = sdhci_bht_execute_tuning;
2761 if (of_property_read_bool(node, "supports-cqe"))
2762 ret = sdhci_msm_cqe_add_host(host, pdev);
2763 else
2764 ret = sdhci_add_host(host);
2765 if (ret)
2766 goto pm_runtime_disable;
2767
2768 pm_runtime_mark_last_busy(&pdev->dev);
2769 pm_runtime_put_autosuspend(&pdev->dev);
2770
2771 return 0;
2772
2773 pm_runtime_disable:
2774 pm_runtime_disable(&pdev->dev);
2775 pm_runtime_set_suspended(&pdev->dev);
2776 pm_runtime_put_noidle(&pdev->dev);
2777 clk_disable:
2778 clk_bulk_disable_unprepare(ARRAY_SIZE(msm_host->bulk_clks),
2779 msm_host->bulk_clks);
2780 bus_clk_disable:
2781 if (!IS_ERR(msm_host->bus_clk))
2782 clk_disable_unprepare(msm_host->bus_clk);
2783 pltfm_free:
2784 /* Bayhub patch: release assigned resource */
2785 if (of_find_property(node, "use-bayhub-bh201", NULL))
2786 sdhci_bht_resource_free(msm_host);
2787 sdhci_pltfm_free(pdev);
2788 return ret;
2789 }
2790
---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org
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