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ramips: add CD polling to sd driver

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

SVN-Revision: 46475
This commit is contained in:
John Crispin 2015-07-24 09:12:10 +00:00
parent ebe957fad6
commit 351a55ac29
1 changed files with 15 additions and 12 deletions
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27
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 +1,3047 @@
@@ -0,0 +1,3050 @@
+/* Copyright Statement:
+ *
+ * This software/firmware and related documentation ("MediaTek Software") are
@ -1821,6 +1821,7 @@ Signed-off-by: John Crispin <blogic@openwrt.org>
+#include <linux/kernel.h>
+#include <linux/version.h>
+#include <linux/pm.h>
+#include <linux/of.h>
+
+#define MSDC_SMPL_FALLING (1)
+#define MSDC_CD_PIN_EN (1 << 0) /* card detection pin is wired */
@ -1916,6 +1917,8 @@ Signed-off-by: John Crispin <blogic@openwrt.org>
+static struct msdc_regs *msdc_reg[HOST_MAX_NUM];
+#endif
+
+static int mtk_sw_poll;
+
+//=================================
+#define PERI_MSDC0_PDN (15)
+//#define PERI_MSDC1_PDN (16)
@ -2331,7 +2334,7 @@ Signed-off-by: John Crispin <blogic@openwrt.org>
+ spin_lock(&host->lock);
+
+ if (hw->get_cd_status) { // NULL
+ inserted = hw->get_cd_status();
+ inserted = hw->get_cd_status();
+ } else {
+ status = sdr_read32(MSDC_PS);
+ inserted = (status & MSDC_PS_CDSTS) ? 0 : 1;
@ -2401,7 +2404,7 @@ Signed-off-by: John Crispin <blogic@openwrt.org>
+ //u8 clksrc = hw->clk_src;
+
+ if (!hz) { // set mmc system clock to 0 ?
+ ERR_MSG("set mclk to 0!!!");
+ //ERR_MSG("set mclk to 0!!!");
+ msdc_reset();
+ return;
+ }
@ -3899,7 +3902,7 @@ Signed-off-by: John Crispin <blogic@openwrt.org>
+
+ if (msdc_do_request(mmc,mrq)) {
+ if(host->hw->flags & MSDC_REMOVABLE && mrq->data && mrq->data->error) {
+ msdc_tune_request(mmc,mrq);
+ //msdc_tune_request(mmc,mrq);
+ }
+ }
+
@ -4148,10 +4151,9 @@ Signed-off-by: John Crispin <blogic@openwrt.org>
+
+ /* card change interrupt */
+ if (intsts & MSDC_INT_CDSC){
+#if defined CONFIG_MTK_MMC_CD_POLL
+ return IRQ_HANDLED;
+#endif
+ IRQ_MSG("MSDC_INT_CDSC irq<0x%.8x>", intsts);
+ if (mtk_sw_poll)
+ return IRQ_HANDLED;
+ IRQ_MSG("MSDC_INT_CDSC irq<0x%.8x>", intsts);
+#if 0 /* ---/+++ by chhung: fix slot mechanical bounce issue */
+ tasklet_hi_schedule(&host->card_tasklet);
+#else
@ -4532,9 +4534,10 @@ 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 */
+
+#if defined CONFIG_MTK_MMC_CD_POLL
+ mmc->caps |= MMC_CAP_NEEDS_POLL;
+#endif
+ mtk_sw_poll = of_property_read_bool(pdev->dev.of_node, "mediatek,cd-poll");
+
+ if (mtk_sw_poll)
+ mmc->caps |= MMC_CAP_NEEDS_POLL;
+
+ /* MMC core transfer sizes tunable parameters */
+#if LINUX_VERSION_CODE > KERNEL_VERSION(3,10,0)