From: Zhou Yanjie <zhouyanjie@zoho.com>
To: linux-mips@vger.kernel.org
Cc: linux-kernel@vger.kernel.org, linux-mmc@vger.kernel.org,
devicetree@vger.kernel.org, ulf.hansson@linaro.org,
paul.burton@mips.com, linus.walleij@linaro.org,
paul@crapouillou.net, malat@debian.org, yuehaibing@huawei.com,
ezequiel@collabora.com, robh+dt@kernel.org, mark.rutland@arm.com,
syq@debian.org, jiaxun.yang@flygoat.com
Subject: [PATCH 2/4] MMC: Ingenic: Add 8bit mode support.
Date: Thu, 5 Sep 2019 15:38:07 +0800 [thread overview]
Message-ID: <1567669089-88693-3-git-send-email-zhouyanjie@zoho.com> (raw)
In-Reply-To: <1567669089-88693-1-git-send-email-zhouyanjie@zoho.com>
Add support for 8bit mode, now supports 1bit/4bit/8bit modes.
Signed-off-by: Zhou Yanjie <zhouyanjie@zoho.com>
---
drivers/mmc/host/jz4740_mmc.c | 12 ++++++++++--
1 file changed, 10 insertions(+), 2 deletions(-)
diff --git a/drivers/mmc/host/jz4740_mmc.c b/drivers/mmc/host/jz4740_mmc.c
index 1b1fcb7..d6811a7 100644
--- a/drivers/mmc/host/jz4740_mmc.c
+++ b/drivers/mmc/host/jz4740_mmc.c
@@ -79,6 +79,8 @@
#define JZ_MMC_CMDAT_IO_ABORT BIT(11)
#define JZ_MMC_CMDAT_BUS_WIDTH_4BIT BIT(10)
+#define JZ_MMC_CMDAT_BUS_WIDTH_8BIT (BIT(10) | BIT(9))
+#define JZ_MMC_CMDAT_BUS_WIDTH_MASK (BIT(10) | BIT(9))
#define JZ_MMC_CMDAT_DMA_EN BIT(8)
#define JZ_MMC_CMDAT_INIT BIT(7)
#define JZ_MMC_CMDAT_BUSY BIT(6)
@@ -899,11 +901,16 @@ static void jz4740_mmc_set_ios(struct mmc_host *mmc, struct mmc_ios *ios)
switch (ios->bus_width) {
case MMC_BUS_WIDTH_1:
- host->cmdat &= ~JZ_MMC_CMDAT_BUS_WIDTH_4BIT;
+ host->cmdat &= ~JZ_MMC_CMDAT_BUS_WIDTH_MASK;
break;
case MMC_BUS_WIDTH_4:
+ host->cmdat &= ~JZ_MMC_CMDAT_BUS_WIDTH_MASK;
host->cmdat |= JZ_MMC_CMDAT_BUS_WIDTH_4BIT;
break;
+ case MMC_BUS_WIDTH_8:
+ host->cmdat &= ~JZ_MMC_CMDAT_BUS_WIDTH_MASK;
+ host->cmdat |= JZ_MMC_CMDAT_BUS_WIDTH_8BIT;
+ break;
default:
break;
}
@@ -1034,7 +1041,8 @@ static int jz4740_mmc_probe(struct platform_device* pdev)
dev_info(&pdev->dev, "Using %s, %d-bit mode\n",
host->use_dma ? "DMA" : "PIO",
- (mmc->caps & MMC_CAP_4_BIT_DATA) ? 4 : 1);
+ (mmc->caps & MMC_CAP_8_BIT_DATA) ? 8 :
+ ((mmc->caps & MMC_CAP_4_BIT_DATA) ? 4 : 1));
return 0;
--
2.7.4
next prev parent reply other threads:[~2019-09-05 7:39 UTC|newest]
Thread overview: 23+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-09-05 7:38 MMC: Ingenic: Add support for 8bit mode and LPM and JZ4760 Soc Zhou Yanjie
2019-09-05 7:38 ` [PATCH 1/4] MMC: Ingenic: Adjust the macro definition name Zhou Yanjie
2019-09-13 15:32 ` Ezequiel Garcia
2019-09-13 15:59 ` Zhou Yanjie
2019-09-05 7:38 ` Zhou Yanjie [this message]
2019-09-05 7:38 ` [PATCH 3/4] dt-bindings: MMC: Add JZ4760 bindings Zhou Yanjie
2019-09-13 14:36 ` Rob Herring
2019-09-05 7:38 ` [PATCH 4/4] MMC: Ingenic: Add support for JZ4760 and support for LPM Zhou Yanjie
2019-10-03 10:00 ` Ulf Hansson
2019-10-06 5:58 ` Zhou Yanjie
2019-10-12 5:13 ` MMC: JZ4740: Add support for 8bit mode and LPM and JZ4760 Soc v2 Zhou Yanjie
2019-10-12 5:13 ` [PATCH 1/6 v2] MMC: Ingenic: Add 8bit mode support Zhou Yanjie
2019-10-12 5:13 ` [PATCH 2/6 v2] dt-bindings: MMC: Add JZ4760 bindings Zhou Yanjie
2019-10-12 5:13 ` [PATCH 3/6 v2] MMC: JZ4740: Add support for the JZ4760 Zhou Yanjie
2019-10-12 5:13 ` [PATCH 4/6 v2] dt-bindings: MMC: Add X1000 bindings Zhou Yanjie
2019-10-14 18:15 ` Rob Herring
2019-10-12 5:13 ` [PATCH 5/6 v2] MMC: JZ4740: Add support for the X1000 Zhou Yanjie
2019-10-12 5:13 ` [PATCH 6/6 v2] MMC: JZ4740: Add support for LPM Zhou Yanjie
2019-10-18 8:52 ` Ulf Hansson
2019-10-18 15:37 ` Paul Cercueil
2019-10-18 16:54 ` Zhou Yanjie
2019-10-19 20:44 ` Ezequiel Garcia
2019-10-21 14:57 ` Ulf Hansson
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