linux-kernel - [PATCH 1/4] [1/4] mmc: core: expose MMC_CAP2

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Date:   Mon, 17 Feb 2020 14:31:48 +0800
From:   Chun-Hung Wu <chun-hung.wu@...iatek.com>
To:     Chaotian Jing <chaotian.jing@...iatek.com>,
        Ulf Hansson <ulf.hansson@...aro.org>,
        Rob Herring <robh+dt@...nel.org>,
        Mark Rutland <mark.rutland@....com>,
        Matthias Brugger <matthias.bgg@...il.com>,
        Linus Walleij <linus.walleij@...aro.org>,
        Pavel Machek <pavel@....cz>,
        Kate Stewart <kstewart@...uxfoundation.org>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Martin Blumenstingl <martin.blumenstingl@...glemail.com>,
        Pan Bian <bianpan2016@....com>,
        Thomas Gleixner <tglx@...utronix.de>,
        Allison Randal <allison@...utok.net>,
        Mathieu Malaterre <malat@...ian.org>,
        Stanley Chu <stanley.chu@...iatek.com>,
        Kuohong Wang <kuohong.wang@...iatek.com>
CC:     <kernel-team@...roid.com>, <linux-kernel@...r.kernel.org>,
        <linux-mmc@...r.kernel.org>, <linux-mediatek@...ts.infradead.org>,
        <devicetree@...r.kernel.org>, <wsd_upstream@...iatek.com>,
        <linux-arm-kernel@...ts.infradead.org>,
        Chun-Hung Wu <chun-hung.wu@...iatek.com>
Subject: [PATCH 1/4] [1/4] mmc: core: expose MMC_CAP2_CQE* to dt

Expose MMC_CAP2_CQE and MMC_CAP2_CQE_DCMD
to host->caps2 if
1. "supports-cqe" is defined in dt and
2. "disable-cqe-dcmd" is not defined in dt.

---
 drivers/mmc/core/host.c | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/drivers/mmc/core/host.c b/drivers/mmc/core/host.c
index 105b7a7..efb0dbe 100644
--- a/drivers/mmc/core/host.c
+++ b/drivers/mmc/core/host.c
@@ -319,6 +319,14 @@ int mmc_of_parse(struct mmc_host *host)
 		host->caps2 |= MMC_CAP2_NO_SD;
 	if (device_property_read_bool(dev, "no-mmc"))
 		host->caps2 |= MMC_CAP2_NO_MMC;
+	if (device_property_read_bool(dev, "supports-cqe"))
+		host->caps2 |= MMC_CAP2_CQE;
+
+	/* Must be after "supports-cqe" check */
+	if (!device_property_read_bool(dev, "disable-cqe-dcmd")) {
+		if (host->caps2 & MMC_CAP2_CQE)
+			host->caps2 |= MMC_CAP2_CQE_DCMD;
+	}
 
 	/* Must be after "non-removable" check */
 	if (device_property_read_u32(dev, "fixed-emmc-driver-type", &drv_type) == 0) {
-- 
1.9.1