mirror of
git://projects.qi-hardware.com/openwrt-xburst.git
synced 2024-12-05 06:18:26 +02:00
196 lines
6.4 KiB
Diff
196 lines
6.4 KiB
Diff
|
From d1b6aa1480c937e326bef99746299cd004a51f28 Mon Sep 17 00:00:00 2001
|
||
|
From: Alison Wang <b18965@freescale.com>
|
||
|
Date: Thu, 4 Aug 2011 09:59:46 +0800
|
||
|
Subject: [PATCH 28/52] Add SD/MMC/SDIO over SPI support for MCF54451 and MCF54418
|
||
|
|
||
|
Add SD/MMC/SDIO over SPI support for MCF54451 and MCF54418.
|
||
|
|
||
|
Signed-off-by: Alison Wang <b18965@freescale.com>
|
||
|
---
|
||
|
drivers/mmc/core/sdio.c | 9 +++++-
|
||
|
drivers/mmc/host/Kconfig | 35 +++++++++++++++++++++
|
||
|
drivers/mmc/host/mmc_spi.c | 73 ++++++++++++++++++++++++++++++++++++++++++++
|
||
|
3 files changed, 116 insertions(+), 1 deletions(-)
|
||
|
|
||
|
--- a/drivers/mmc/core/sdio.c
|
||
|
+++ b/drivers/mmc/core/sdio.c
|
||
|
@@ -566,8 +566,15 @@ static void mmc_sdio_detect(struct mmc_h
|
||
|
/*
|
||
|
* Just check if our card has been removed.
|
||
|
*/
|
||
|
+#if defined(M54451_SD_HW_DETECT)
|
||
|
+ {
|
||
|
+ unsigned char x;
|
||
|
+ err = mmc_io_rw_direct(host->card, 0, 0,
|
||
|
+ SDIO_FBR_BASE(0) + SDIO_FBR_CIS + 0, 0, &x);
|
||
|
+ }
|
||
|
+#else
|
||
|
err = mmc_select_card(host->card);
|
||
|
-
|
||
|
+#endif
|
||
|
mmc_release_host(host);
|
||
|
|
||
|
/*
|
||
|
--- a/drivers/mmc/host/Kconfig
|
||
|
+++ b/drivers/mmc/host/Kconfig
|
||
|
@@ -368,6 +368,41 @@ config MMC_SPI
|
||
|
|
||
|
If unsure, or if your system has no SPI master driver, say N.
|
||
|
|
||
|
+config M54451_SD_HW_DETECT
|
||
|
+ tristate "use extern IRQ7 to detect SD/MMC card"
|
||
|
+ depends on MMC_SPI && M54451
|
||
|
+ default y
|
||
|
+ help
|
||
|
+ MMC/SD interface on 54551evb was over SPI. Enable this option will
|
||
|
+ use irq7 to dectect the card inserting/removing.
|
||
|
+
|
||
|
+config M5441X_SD_HW_DETECT
|
||
|
+ tristate "use extern IRQ to detect SD/MMC card"
|
||
|
+ depends on MMC_SPI && M5441X
|
||
|
+ help
|
||
|
+ MMC/SD interface on 54418evb was over SPI. Enable this option will
|
||
|
+ use irq7 or irq1 to dectect the card inserting/removing.
|
||
|
+
|
||
|
+choice
|
||
|
+ prompt "MMC/SD card detect "
|
||
|
+ depends on M5441X_SD_HW_DETECT
|
||
|
+
|
||
|
+config DETECT_USE_EXTERN_IRQ7
|
||
|
+ tristate "based extern IRQ7"
|
||
|
+ depends on M5441X_SD_HW_DETECT
|
||
|
+ help
|
||
|
+ MMC/SD cards using spi controller,
|
||
|
+ we use the extern irq7 to detect card.
|
||
|
+
|
||
|
+config DETECT_USE_EXTERN_IRQ1
|
||
|
+ tristate "based extern IRQ1"
|
||
|
+ depends on M5441X_SD_HW_DETECT
|
||
|
+ help
|
||
|
+ MMC/SD cards using spi controller,
|
||
|
+ we use the extern irq1 to detect card.
|
||
|
+
|
||
|
+endchoice
|
||
|
+
|
||
|
config MMC_S3C
|
||
|
tristate "Samsung S3C SD/MMC Card Interface support"
|
||
|
depends on ARCH_S3C2410
|
||
|
--- a/drivers/mmc/host/mmc_spi.c
|
||
|
+++ b/drivers/mmc/host/mmc_spi.c
|
||
|
@@ -9,6 +9,10 @@
|
||
|
* (C) Copyright 2007, ATRON electronic GmbH,
|
||
|
* Jan Nikitenko <jan.nikitenko@gmail.com>
|
||
|
*
|
||
|
+ * Copyright (C) 2009-2011 Freescale Semiconductor, Inc. All Rights Reserved.
|
||
|
+ * Modified for M54451EVB/M54418TWR boards.
|
||
|
+ * Shrek Wu <b16972@freescale.com>
|
||
|
+ * Jingchang Lu <b22599@freescale.com>
|
||
|
*
|
||
|
* This program is free software; you can redistribute it and/or modify
|
||
|
* it under the terms of the GNU General Public License as published by
|
||
|
@@ -32,6 +36,14 @@
|
||
|
#include <linux/crc7.h>
|
||
|
#include <linux/crc-itu-t.h>
|
||
|
#include <linux/scatterlist.h>
|
||
|
+#if defined(CONFIG_M54451_SD_HW_DETECT)
|
||
|
+#include <asm/mcf5445x_eport.h>
|
||
|
+#include <asm/mcf5445x_intc.h>
|
||
|
+#include <asm/mcfsim.h>
|
||
|
+#elif defined(CONFIG_M5441X_SD_HW_DETECT)
|
||
|
+#include <asm/mcf5441x_eport.h>
|
||
|
+#include <asm/mcfsim.h>
|
||
|
+#endif
|
||
|
|
||
|
#include <linux/mmc/host.h>
|
||
|
#include <linux/mmc/mmc.h> /* for R1_SPI_* bit values */
|
||
|
@@ -268,6 +280,9 @@ static int mmc_spi_response_get(struct m
|
||
|
unsigned short rotator;
|
||
|
int i;
|
||
|
char tag[32];
|
||
|
+#if defined(CONFIG_M54451_SD_HW_DETECT) || defined(CONFIG_M5441X_SD_HW_DETECT)
|
||
|
+ u8 oldcp_value = 0;
|
||
|
+#endif
|
||
|
|
||
|
snprintf(tag, sizeof(tag), " ... CMD%d response SPI_%s",
|
||
|
cmd->opcode, maptype(cmd));
|
||
|
@@ -278,6 +293,9 @@ static int mmc_spi_response_get(struct m
|
||
|
* first byte. After STOP_TRANSMISSION command it may include
|
||
|
* two data bits, but otherwise it's all ones.
|
||
|
*/
|
||
|
+#if defined(CONFIG_M54451_SD_HW_DETECT) || defined(CONFIG_M5441X_SD_HW_DETECT)
|
||
|
+ oldcp_value = *cp;
|
||
|
+#endif
|
||
|
cp += 8;
|
||
|
while (cp < end && *cp == 0xff)
|
||
|
cp++;
|
||
|
@@ -310,6 +328,15 @@ static int mmc_spi_response_get(struct m
|
||
|
}
|
||
|
|
||
|
checkstatus:
|
||
|
+#if defined(CONFIG_M54451_SD_HW_DETECT) || defined(CONFIG_M5441X_SD_HW_DETECT)
|
||
|
+ if ((*cp == 0) && (oldcp_value == 0)) {
|
||
|
+ dev_dbg(&host->spi->dev, "NO CARD in the SD SOCKET, "
|
||
|
+ "new status %02x, old status %02x\n",
|
||
|
+ *cp, oldcp_value);
|
||
|
+ value = -EBADR;
|
||
|
+ goto done;
|
||
|
+ }
|
||
|
+#endif
|
||
|
bitshift = 0;
|
||
|
if (*cp & 0x80) {
|
||
|
/* Houston, we have an ugly card with a bit-shifted response */
|
||
|
@@ -1313,7 +1340,53 @@ mmc_spi_detect_irq(int irq, void *mmc)
|
||
|
struct mmc_spi_host *host = mmc_priv(mmc);
|
||
|
u16 delay_msec = max(host->pdata->detect_delay, (u16)100);
|
||
|
|
||
|
+#if defined(CONFIG_M54451_SD_HW_DETECT)
|
||
|
+ dev_dbg(&host->spi->dev, "mmc_spi_detect_irq "
|
||
|
+ "MCF_EPORT_EPPAR %x, MCF_EPORT_EPIER %x,"
|
||
|
+ "MCF_INTC0_ICR7 %x, MCF_GPIO_PAR_IRQ %x,"
|
||
|
+ "MCF_EPORT_EPDDR %x, MCF_EPORT_EPFR %x\n",
|
||
|
+ MCF_EPORT_EPPAR, MCF_EPORT_EPIER,
|
||
|
+ MCF_INTC0_ICR7, MCF_GPIO_PAR_IRQ,
|
||
|
+ MCF_EPORT_EPDDR, MCF_EPORT_EPFR);
|
||
|
+
|
||
|
+ MCF_EPORT_EPIER &= (~MCF_EPORT_EPIER_EPIE7);
|
||
|
+#elif defined(CONFIG_M5441X_SD_HW_DETECT)
|
||
|
+#if defined(CONFIG_DETECT_USE_EXTERN_IRQ1)
|
||
|
+ MCF_EPORT_EPIER = MCF_EPORT_EPIER & (~MCF_EPORT_EPIER_EPIE1);
|
||
|
+#elif defined(CONFIG_DETECT_USE_EXTERN_IRQ7)
|
||
|
+ MCF_EPORT_EPIER = MCF_EPORT_EPIER & (~MCF_EPORT_EPIER_EPIE7);
|
||
|
+#else
|
||
|
+ MCF_EPORT_EPIER = MCF_EPORT_EPIER & (~MCF_EPORT_EPIER_EPIE7);
|
||
|
+#endif
|
||
|
+#endif
|
||
|
mmc_detect_change(mmc, msecs_to_jiffies(delay_msec));
|
||
|
+#if defined(CONFIG_M54451_SD_HW_DETECT)
|
||
|
+ MCF_EPORT_EPPAR |= MCF_EPORT_EPPAR_EPPA7_BOTH;
|
||
|
+ MCF_EPORT_EPIER = MCF_EPORT_EPIER | MCF_EPORT_EPIER_EPIE7;
|
||
|
+ MCF_EPORT_EPFR |= MCF_EPORT_EPFR_EPF7;
|
||
|
+ dev_dbg(&host->spi->dev, "mmc_spi_detect_irq "
|
||
|
+ "MCF_EPORT_EPPAR %x, MCF_EPORT_EPIER %x,"
|
||
|
+ "MCF_INTC0_ICR7 %x, MCF_GPIO_PAR_IRQ %x,"
|
||
|
+ "MCF_EPORT_EPDDR %x, MCF_EPORT_EPFR %x\n",
|
||
|
+ MCF_EPORT_EPPAR, MCF_EPORT_EPIER,
|
||
|
+ MCF_INTC0_ICR7, MCF_GPIO_PAR_IRQ,
|
||
|
+ MCF_EPORT_EPDDR, MCF_EPORT_EPFR);
|
||
|
+
|
||
|
+#elif defined(CONFIG_M5441X_SD_HW_DETECT)
|
||
|
+#if defined(CONFIG_DETECT_USE_EXTERN_IRQ1)
|
||
|
+ MCF_EPORT_EPPAR = MCF_EPORT_EPPAR | MCF_EPORT_EPPAR_EPPA1_BOTH;
|
||
|
+ MCF_EPORT_EPIER = MCF_EPORT_EPIER | MCF_EPORT_EPIER_EPIE1;
|
||
|
+ MCF_EPORT_EPFR = MCF_EPORT_EPFR | MCF_EPORT_EPFR_EPF1;
|
||
|
+#elif defined(CONFIG_DETECT_USE_EXTERN_IRQ7)
|
||
|
+ MCF_EPORT_EPPAR = MCF_EPORT_EPPAR | MCF_EPORT_EPPAR_EPPA7_BOTH;
|
||
|
+ MCF_EPORT_EPIER = MCF_EPORT_EPIER | MCF_EPORT_EPIER_EPIE7;
|
||
|
+ MCF_EPORT_EPFR = MCF_EPORT_EPFR | MCF_EPORT_EPFR_EPF7;
|
||
|
+#else
|
||
|
+ MCF_EPORT_EPPAR = MCF_EPORT_EPPAR | MCF_EPORT_EPPAR_EPPA7_BOTH;
|
||
|
+ MCF_EPORT_EPIER = MCF_EPORT_EPIER | MCF_EPORT_EPIER_EPIE7;
|
||
|
+ MCF_EPORT_EPFR = MCF_EPORT_EPFR | MCF_EPORT_EPFR_EPF7;
|
||
|
+#endif
|
||
|
+#endif
|
||
|
return IRQ_HANDLED;
|
||
|
}
|
||
|
|