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196 lines
6.4 KiB
Diff
196 lines
6.4 KiB
Diff
From d1b6aa1480c937e326bef99746299cd004a51f28 Mon Sep 17 00:00:00 2001
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From: Alison Wang <b18965@freescale.com>
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Date: Thu, 4 Aug 2011 09:59:46 +0800
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Subject: [PATCH 28/52] Add SD/MMC/SDIO over SPI support for MCF54451 and MCF54418
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Add SD/MMC/SDIO over SPI support for MCF54451 and MCF54418.
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Signed-off-by: Alison Wang <b18965@freescale.com>
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---
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drivers/mmc/core/sdio.c | 9 +++++-
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drivers/mmc/host/Kconfig | 35 +++++++++++++++++++++
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drivers/mmc/host/mmc_spi.c | 73 ++++++++++++++++++++++++++++++++++++++++++++
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3 files changed, 116 insertions(+), 1 deletions(-)
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--- a/drivers/mmc/core/sdio.c
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+++ b/drivers/mmc/core/sdio.c
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@@ -566,8 +566,15 @@ static void mmc_sdio_detect(struct mmc_h
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/*
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* Just check if our card has been removed.
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*/
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+#if defined(M54451_SD_HW_DETECT)
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+ {
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+ unsigned char x;
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+ err = mmc_io_rw_direct(host->card, 0, 0,
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+ SDIO_FBR_BASE(0) + SDIO_FBR_CIS + 0, 0, &x);
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+ }
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+#else
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err = mmc_select_card(host->card);
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-
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+#endif
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mmc_release_host(host);
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/*
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--- a/drivers/mmc/host/Kconfig
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+++ b/drivers/mmc/host/Kconfig
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@@ -368,6 +368,41 @@ config MMC_SPI
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If unsure, or if your system has no SPI master driver, say N.
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+config M54451_SD_HW_DETECT
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+ tristate "use extern IRQ7 to detect SD/MMC card"
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+ depends on MMC_SPI && M54451
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+ default y
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+ help
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+ MMC/SD interface on 54551evb was over SPI. Enable this option will
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+ use irq7 to dectect the card inserting/removing.
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+
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+config M5441X_SD_HW_DETECT
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+ tristate "use extern IRQ to detect SD/MMC card"
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+ depends on MMC_SPI && M5441X
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+ help
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+ MMC/SD interface on 54418evb was over SPI. Enable this option will
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+ use irq7 or irq1 to dectect the card inserting/removing.
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+
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+choice
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+ prompt "MMC/SD card detect "
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+ depends on M5441X_SD_HW_DETECT
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+
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+config DETECT_USE_EXTERN_IRQ7
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+ tristate "based extern IRQ7"
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+ depends on M5441X_SD_HW_DETECT
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+ help
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+ MMC/SD cards using spi controller,
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+ we use the extern irq7 to detect card.
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+
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+config DETECT_USE_EXTERN_IRQ1
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+ tristate "based extern IRQ1"
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+ depends on M5441X_SD_HW_DETECT
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+ help
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+ MMC/SD cards using spi controller,
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+ we use the extern irq1 to detect card.
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+
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+endchoice
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+
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config MMC_S3C
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tristate "Samsung S3C SD/MMC Card Interface support"
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depends on ARCH_S3C2410
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--- a/drivers/mmc/host/mmc_spi.c
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+++ b/drivers/mmc/host/mmc_spi.c
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@@ -9,6 +9,10 @@
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* (C) Copyright 2007, ATRON electronic GmbH,
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* Jan Nikitenko <jan.nikitenko@gmail.com>
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*
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+ * Copyright (C) 2009-2011 Freescale Semiconductor, Inc. All Rights Reserved.
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+ * Modified for M54451EVB/M54418TWR boards.
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+ * Shrek Wu <b16972@freescale.com>
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+ * Jingchang Lu <b22599@freescale.com>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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@@ -32,6 +36,14 @@
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#include <linux/crc7.h>
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#include <linux/crc-itu-t.h>
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#include <linux/scatterlist.h>
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+#if defined(CONFIG_M54451_SD_HW_DETECT)
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+#include <asm/mcf5445x_eport.h>
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+#include <asm/mcf5445x_intc.h>
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+#include <asm/mcfsim.h>
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+#elif defined(CONFIG_M5441X_SD_HW_DETECT)
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+#include <asm/mcf5441x_eport.h>
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+#include <asm/mcfsim.h>
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+#endif
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#include <linux/mmc/host.h>
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#include <linux/mmc/mmc.h> /* for R1_SPI_* bit values */
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@@ -268,6 +280,9 @@ static int mmc_spi_response_get(struct m
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unsigned short rotator;
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int i;
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char tag[32];
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+#if defined(CONFIG_M54451_SD_HW_DETECT) || defined(CONFIG_M5441X_SD_HW_DETECT)
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+ u8 oldcp_value = 0;
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+#endif
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snprintf(tag, sizeof(tag), " ... CMD%d response SPI_%s",
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cmd->opcode, maptype(cmd));
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@@ -278,6 +293,9 @@ static int mmc_spi_response_get(struct m
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* first byte. After STOP_TRANSMISSION command it may include
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* two data bits, but otherwise it's all ones.
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*/
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+#if defined(CONFIG_M54451_SD_HW_DETECT) || defined(CONFIG_M5441X_SD_HW_DETECT)
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+ oldcp_value = *cp;
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+#endif
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cp += 8;
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while (cp < end && *cp == 0xff)
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cp++;
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@@ -310,6 +328,15 @@ static int mmc_spi_response_get(struct m
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}
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checkstatus:
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+#if defined(CONFIG_M54451_SD_HW_DETECT) || defined(CONFIG_M5441X_SD_HW_DETECT)
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+ if ((*cp == 0) && (oldcp_value == 0)) {
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+ dev_dbg(&host->spi->dev, "NO CARD in the SD SOCKET, "
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+ "new status %02x, old status %02x\n",
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+ *cp, oldcp_value);
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+ value = -EBADR;
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+ goto done;
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+ }
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+#endif
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bitshift = 0;
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if (*cp & 0x80) {
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/* Houston, we have an ugly card with a bit-shifted response */
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@@ -1313,7 +1340,53 @@ mmc_spi_detect_irq(int irq, void *mmc)
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struct mmc_spi_host *host = mmc_priv(mmc);
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u16 delay_msec = max(host->pdata->detect_delay, (u16)100);
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+#if defined(CONFIG_M54451_SD_HW_DETECT)
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+ dev_dbg(&host->spi->dev, "mmc_spi_detect_irq "
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+ "MCF_EPORT_EPPAR %x, MCF_EPORT_EPIER %x,"
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+ "MCF_INTC0_ICR7 %x, MCF_GPIO_PAR_IRQ %x,"
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+ "MCF_EPORT_EPDDR %x, MCF_EPORT_EPFR %x\n",
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+ MCF_EPORT_EPPAR, MCF_EPORT_EPIER,
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+ MCF_INTC0_ICR7, MCF_GPIO_PAR_IRQ,
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+ MCF_EPORT_EPDDR, MCF_EPORT_EPFR);
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+
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+ MCF_EPORT_EPIER &= (~MCF_EPORT_EPIER_EPIE7);
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+#elif defined(CONFIG_M5441X_SD_HW_DETECT)
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+#if defined(CONFIG_DETECT_USE_EXTERN_IRQ1)
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+ MCF_EPORT_EPIER = MCF_EPORT_EPIER & (~MCF_EPORT_EPIER_EPIE1);
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+#elif defined(CONFIG_DETECT_USE_EXTERN_IRQ7)
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+ MCF_EPORT_EPIER = MCF_EPORT_EPIER & (~MCF_EPORT_EPIER_EPIE7);
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+#else
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+ MCF_EPORT_EPIER = MCF_EPORT_EPIER & (~MCF_EPORT_EPIER_EPIE7);
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+#endif
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+#endif
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mmc_detect_change(mmc, msecs_to_jiffies(delay_msec));
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+#if defined(CONFIG_M54451_SD_HW_DETECT)
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+ MCF_EPORT_EPPAR |= MCF_EPORT_EPPAR_EPPA7_BOTH;
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+ MCF_EPORT_EPIER = MCF_EPORT_EPIER | MCF_EPORT_EPIER_EPIE7;
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+ MCF_EPORT_EPFR |= MCF_EPORT_EPFR_EPF7;
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+ dev_dbg(&host->spi->dev, "mmc_spi_detect_irq "
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+ "MCF_EPORT_EPPAR %x, MCF_EPORT_EPIER %x,"
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+ "MCF_INTC0_ICR7 %x, MCF_GPIO_PAR_IRQ %x,"
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+ "MCF_EPORT_EPDDR %x, MCF_EPORT_EPFR %x\n",
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+ MCF_EPORT_EPPAR, MCF_EPORT_EPIER,
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+ MCF_INTC0_ICR7, MCF_GPIO_PAR_IRQ,
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+ MCF_EPORT_EPDDR, MCF_EPORT_EPFR);
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+
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+#elif defined(CONFIG_M5441X_SD_HW_DETECT)
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+#if defined(CONFIG_DETECT_USE_EXTERN_IRQ1)
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+ MCF_EPORT_EPPAR = MCF_EPORT_EPPAR | MCF_EPORT_EPPAR_EPPA1_BOTH;
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+ MCF_EPORT_EPIER = MCF_EPORT_EPIER | MCF_EPORT_EPIER_EPIE1;
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+ MCF_EPORT_EPFR = MCF_EPORT_EPFR | MCF_EPORT_EPFR_EPF1;
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+#elif defined(CONFIG_DETECT_USE_EXTERN_IRQ7)
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+ MCF_EPORT_EPPAR = MCF_EPORT_EPPAR | MCF_EPORT_EPPAR_EPPA7_BOTH;
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+ MCF_EPORT_EPIER = MCF_EPORT_EPIER | MCF_EPORT_EPIER_EPIE7;
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+ MCF_EPORT_EPFR = MCF_EPORT_EPFR | MCF_EPORT_EPFR_EPF7;
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+#else
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+ MCF_EPORT_EPPAR = MCF_EPORT_EPPAR | MCF_EPORT_EPPAR_EPPA7_BOTH;
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+ MCF_EPORT_EPIER = MCF_EPORT_EPIER | MCF_EPORT_EPIER_EPIE7;
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+ MCF_EPORT_EPFR = MCF_EPORT_EPFR | MCF_EPORT_EPFR_EPF7;
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+#endif
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+#endif
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return IRQ_HANDLED;
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}
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