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ralink: the mmc driver can now handle CD lines that are active low

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Signed-off-by: John Crispin <blogic@openwrt.org>

SVN-Revision: 47074
This commit is contained in:
John Crispin 2015-10-01 18:13:47 +00:00
parent 9e1268b168
commit e1b1b0cbfd
1 changed files with 14 additions and 4 deletions
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18
target/linux/ramips/patches-3.18/0053-mmc-MIPS-ralink-add-sdhci-for-mt7620a-SoC.patch
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@ -25,7 +25,7 @@ Signed-off-by: John Crispin <blogic@openwrt.org>
--- a/drivers/mmc/host/Kconfig
+++ b/drivers/mmc/host/Kconfig
@@ -773,3 +773,5 @@ config MMC_SUNXI
@@ -773,3 +773,5 @@
help
This selects support for the SD/MMC Host Controller on
Allwinner sunxi SoCs.
@ -1760,7 +1760,7 @@ Signed-off-by: John Crispin <blogic@openwrt.org>
+
--- /dev/null
+++ b/drivers/mmc/host/mtk-mmc/sd.c
@@ -0,0 +1,3050 @@
@@ -0,0 +1,3060 @@
+/* Copyright Statement:
+ *
+ * This software/firmware and related documentation ("MediaTek Software") are
@ -1919,6 +1919,8 @@ Signed-off-by: John Crispin <blogic@openwrt.org>
+
+static int mtk_sw_poll;
+
+static int cd_active_low = 1;
+
+//=================================
+#define PERI_MSDC0_PDN (15)
+//#define PERI_MSDC1_PDN (16)
@ -2337,7 +2339,10 @@ Signed-off-by: John Crispin <blogic@openwrt.org>
+ inserted = hw->get_cd_status();
+ } else {
+ status = sdr_read32(MSDC_PS);
+ inserted = (status & MSDC_PS_CDSTS) ? 0 : 1;
+ if (cd_active_low)
+ inserted = (status & MSDC_PS_CDSTS) ? 0 : 1;
+ else
+ inserted = (status & MSDC_PS_CDSTS) ? 1 : 0;
+ }
+
+#if 0
@ -4081,7 +4086,11 @@ Signed-off-by: John Crispin <blogic@openwrt.org>
+#if 0
+ present = host->card_inserted; /* why not read from H/W: Fix me*/
+#else
+ present = (sdr_read32(MSDC_PS) & MSDC_PS_CDSTS) ? 0 : 1;
+ // CD
+ if (cd_active_low)
+ present = (sdr_read32(MSDC_PS) & MSDC_PS_CDSTS) ? 0 : 1;
+ else
+ present = (sdr_read32(MSDC_PS) & MSDC_PS_CDSTS) ? 1 : 0;
+ host->card_inserted = present;
+#endif
+ spin_unlock_irqrestore(&host->lock, flags);
@ -4534,6 +4543,7 @@ Signed-off-by: John Crispin <blogic@openwrt.org>
+ if ((hw->flags & MSDC_SDIO_IRQ) || (hw->flags & MSDC_EXT_SDIO_IRQ))
+ mmc->caps |= MMC_CAP_SDIO_IRQ; /* yes for sdio */
+
+ cd_active_low = !of_property_read_bool(pdev->dev.of_node, "mediatek,cd-high");
+ mtk_sw_poll = of_property_read_bool(pdev->dev.of_node, "mediatek,cd-poll");
+
+ if (mtk_sw_poll)