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CVS Update@linux-mips.org: linux

To: linux-cvs-patches@linux-mips.org
Subject: CVS Update@linux-mips.org: linux
From: ppopov@linux-mips.org
Date: Sun, 30 Jan 2005 08:07:07 +0000
Reply-to: linux-mips@linux-mips.org
Sender: linux-cvs-patches-bounce@linux-mips.org
CVSROOT:        /home/cvs
Module name:    linux
Changes by:     ppopov@ftp.linux-mips.org       05/01/30 08:07:01

Added files:
        arch/mips/au1000/db1x00: Tag: linux_2_4 mmc_support.c 

Log message:
        db1x mmc support functions.

diff -urN linux/arch/mips/au1000/db1x00/mmc_support.c 
linux/arch/mips/au1000/db1x00/mmc_support.c
--- linux/arch/mips/au1000/db1x00/Attic/mmc_support.c   1970/01/01 00:00:00
+++ linux/arch/mips/au1000/db1x00/Attic/mmc_support.c   Sun Jan 30 08:07:01 
2005        1.1.2.1
@@ -0,0 +1,126 @@
+/*
+ * BRIEF MODULE DESCRIPTION
+ *
+ *     MMC support routines for DB1100.
+ *
+ *
+ * Copyright (c) 2003-2004 Embedded Edge, LLC.
+ * Author: Embedded Edge, LLC.
+ * Contact: dan@embeddededge.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 the
+ *  Free Software Foundation;  either version 2 of the  License, or (at your
+ *  option) any later version.
+ *
+ *  THIS  SOFTWARE  IS PROVIDED   ``AS  IS'' AND   ANY  EXPRESS OR IMPLIED
+ *  WARRANTIES,   INCLUDING, BUT NOT  LIMITED  TO, THE IMPLIED WARRANTIES OF
+ *  MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.  IN
+ *  NO  EVENT  SHALL   THE AUTHOR  BE    LIABLE FOR ANY   DIRECT, INDIRECT,
+ *  INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ *  NOT LIMITED   TO, PROCUREMENT OF  SUBSTITUTE GOODS  OR SERVICES; LOSS OF
+ *  USE, DATA,  OR PROFITS; OR  BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
+ *  ANY THEORY OF LIABILITY, WHETHER IN  CONTRACT, STRICT LIABILITY, OR TORT
+ *  (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ *  THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ *  You should have received a copy of the  GNU General Public License along
+ *  with this program; if not, write  to the Free Software Foundation, Inc.,
+ *  675 Mass Ave, Cambridge, MA 02139, USA.
+ *
+ */
+
+
+#include <linux/config.h>
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/init.h>
+
+#include <asm/irq.h>
+#include <asm/au1000.h>
+#include <asm/au1100_mmc.h>
+#include <asm/db1x00.h>
+
+
+/* SD/MMC controller support functions */
+
+/*
+ * Detect card.
+ */
+void mmc_card_inserted(int _n_, int *_res_)
+{
+       u32 gpios = au_readl(SYS_PINSTATERD);
+       u32 emptybit = (_n_) ? (1<<20) : (1<<19);
+       *_res_ = ((gpios & emptybit) == 0);
+}
+
+/*
+ * Check card write protection.
+ */
+void mmc_card_writable(int _n_, int *_res_)
+{
+       BCSR * const bcsr = (BCSR *)BCSR_KSEG1_ADDR;
+       unsigned long mmc_wp, board_specific;
+
+       if (_n_) {
+               mmc_wp = BCSR_BOARD_SD1_WP;
+       } else {
+               mmc_wp = BCSR_BOARD_SD0_WP;
+       }
+
+       board_specific = au_readl((unsigned long)(&bcsr->specific));
+
+       if (!(board_specific & mmc_wp)) {/* low means card writable */
+               *_res_ = 1;
+       } else {
+               *_res_ = 0;
+       }
+}
+
+/*
+ * Apply power to card slot.
+ */
+void mmc_power_on(int _n_)
+{
+       BCSR * const bcsr = (BCSR *)BCSR_KSEG1_ADDR;
+       unsigned long mmc_pwr, board_specific;
+
+       if (_n_) {
+               mmc_pwr = BCSR_BOARD_SD1_PWR;
+       } else {
+               mmc_pwr = BCSR_BOARD_SD0_PWR;
+       }
+
+       board_specific = au_readl((unsigned long)(&bcsr->specific));
+       board_specific |= mmc_pwr;
+
+       au_writel(board_specific, (int)(&bcsr->specific));
+       au_sync_delay(1);
+}
+
+/*
+ * Remove power from card slot.
+ */
+void mmc_power_off(int _n_)
+{
+       BCSR * const bcsr = (BCSR *)BCSR_KSEG1_ADDR;
+       unsigned long mmc_pwr, board_specific;
+
+       if (_n_) {
+               mmc_pwr = BCSR_BOARD_SD1_PWR;
+       } else {
+               mmc_pwr = BCSR_BOARD_SD0_PWR;
+       }
+
+       board_specific = au_readl((unsigned long)(&bcsr->specific));
+       board_specific &= ~mmc_pwr;
+
+       au_writel(board_specific, (int)(&bcsr->specific));
+       au_sync_delay(1);
+}
+
+EXPORT_SYMBOL(mmc_card_inserted);
+EXPORT_SYMBOL(mmc_card_writable);
+EXPORT_SYMBOL(mmc_power_on);
+EXPORT_SYMBOL(mmc_power_off);
+

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