2009-10-02 02:22:09 +00:00
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/*
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* SuperH Mobile SDHI
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*
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* Copyright (C) 2009 Magnus Damm
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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 version 2 as
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* published by the Free Software Foundation.
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*
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* Based on "Compaq ASIC3 support":
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*
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* Copyright 2001 Compaq Computer Corporation.
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* Copyright 2004-2005 Phil Blundell
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* Copyright 2007-2008 OpenedHand Ltd.
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*
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* Authors: Phil Blundell <pb@handhelds.org>,
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* Samuel Ortiz <sameo@openedhand.com>
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*
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*/
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#include <linux/kernel.h>
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#include <linux/clk.h>
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include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h
percpu.h is included by sched.h and module.h and thus ends up being
included when building most .c files. percpu.h includes slab.h which
in turn includes gfp.h making everything defined by the two files
universally available and complicating inclusion dependencies.
percpu.h -> slab.h dependency is about to be removed. Prepare for
this change by updating users of gfp and slab facilities include those
headers directly instead of assuming availability. As this conversion
needs to touch large number of source files, the following script is
used as the basis of conversion.
http://userweb.kernel.org/~tj/misc/slabh-sweep.py
The script does the followings.
* Scan files for gfp and slab usages and update includes such that
only the necessary includes are there. ie. if only gfp is used,
gfp.h, if slab is used, slab.h.
* When the script inserts a new include, it looks at the include
blocks and try to put the new include such that its order conforms
to its surrounding. It's put in the include block which contains
core kernel includes, in the same order that the rest are ordered -
alphabetical, Christmas tree, rev-Xmas-tree or at the end if there
doesn't seem to be any matching order.
* If the script can't find a place to put a new include (mostly
because the file doesn't have fitting include block), it prints out
an error message indicating which .h file needs to be added to the
file.
The conversion was done in the following steps.
1. The initial automatic conversion of all .c files updated slightly
over 4000 files, deleting around 700 includes and adding ~480 gfp.h
and ~3000 slab.h inclusions. The script emitted errors for ~400
files.
2. Each error was manually checked. Some didn't need the inclusion,
some needed manual addition while adding it to implementation .h or
embedding .c file was more appropriate for others. This step added
inclusions to around 150 files.
3. The script was run again and the output was compared to the edits
from #2 to make sure no file was left behind.
4. Several build tests were done and a couple of problems were fixed.
e.g. lib/decompress_*.c used malloc/free() wrappers around slab
APIs requiring slab.h to be added manually.
5. The script was run on all .h files but without automatically
editing them as sprinkling gfp.h and slab.h inclusions around .h
files could easily lead to inclusion dependency hell. Most gfp.h
inclusion directives were ignored as stuff from gfp.h was usually
wildly available and often used in preprocessor macros. Each
slab.h inclusion directive was examined and added manually as
necessary.
6. percpu.h was updated not to include slab.h.
7. Build test were done on the following configurations and failures
were fixed. CONFIG_GCOV_KERNEL was turned off for all tests (as my
distributed build env didn't work with gcov compiles) and a few
more options had to be turned off depending on archs to make things
build (like ipr on powerpc/64 which failed due to missing writeq).
* x86 and x86_64 UP and SMP allmodconfig and a custom test config.
* powerpc and powerpc64 SMP allmodconfig
* sparc and sparc64 SMP allmodconfig
* ia64 SMP allmodconfig
* s390 SMP allmodconfig
* alpha SMP allmodconfig
* um on x86_64 SMP allmodconfig
8. percpu.h modifications were reverted so that it could be applied as
a separate patch and serve as bisection point.
Given the fact that I had only a couple of failures from tests on step
6, I'm fairly confident about the coverage of this conversion patch.
If there is a breakage, it's likely to be something in one of the arch
headers which should be easily discoverable easily on most builds of
the specific arch.
Signed-off-by: Tejun Heo <tj@kernel.org>
Guess-its-ok-by: Christoph Lameter <cl@linux-foundation.org>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Lee Schermerhorn <Lee.Schermerhorn@hp.com>
2010-03-24 08:04:11 +00:00
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#include <linux/slab.h>
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2012-05-01 16:03:43 +00:00
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#include <linux/mod_devicetable.h>
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2011-07-03 19:15:51 +00:00
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#include <linux/module.h>
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2013-02-15 15:13:56 +00:00
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#include <linux/of_device.h>
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2009-10-02 02:22:09 +00:00
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#include <linux/platform_device.h>
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2010-02-22 04:37:09 +00:00
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#include <linux/mmc/host.h>
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2011-03-14 08:52:33 +00:00
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#include <linux/mmc/sh_mobile_sdhi.h>
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2009-10-02 02:22:09 +00:00
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#include <linux/mfd/tmio.h>
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2010-05-19 18:34:16 +00:00
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#include <linux/sh_dma.h>
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2011-06-20 23:00:10 +00:00
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#include <linux/delay.h>
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2009-10-02 02:22:09 +00:00
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2011-03-14 08:52:33 +00:00
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#include "tmio_mmc.h"
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2013-02-15 15:13:56 +00:00
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struct sh_mobile_sdhi_of_data {
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unsigned long tmio_flags;
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};
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static const struct sh_mobile_sdhi_of_data sh_mobile_sdhi_of_cfg[] = {
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{
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.tmio_flags = TMIO_MMC_HAS_IDLE_WAIT,
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},
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};
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2009-10-02 02:22:09 +00:00
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struct sh_mobile_sdhi {
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struct clk *clk;
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struct tmio_mmc_data mmc_data;
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2010-05-19 18:34:16 +00:00
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struct tmio_mmc_dma dma_priv;
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2009-10-02 02:22:09 +00:00
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};
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2012-06-20 17:10:32 +00:00
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static int sh_mobile_sdhi_clk_enable(struct platform_device *pdev, unsigned int *f)
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{
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2013-06-03 04:41:03 +00:00
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struct mmc_host *mmc = platform_get_drvdata(pdev);
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2012-06-20 17:10:32 +00:00
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struct tmio_mmc_host *host = mmc_priv(mmc);
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struct sh_mobile_sdhi *priv = container_of(host->pdata, struct sh_mobile_sdhi, mmc_data);
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int ret = clk_enable(priv->clk);
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if (ret < 0)
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return ret;
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*f = clk_get_rate(priv->clk);
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return 0;
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}
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static void sh_mobile_sdhi_clk_disable(struct platform_device *pdev)
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{
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2013-06-03 04:41:03 +00:00
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struct mmc_host *mmc = platform_get_drvdata(pdev);
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2012-06-20 17:10:32 +00:00
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struct tmio_mmc_host *host = mmc_priv(mmc);
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struct sh_mobile_sdhi *priv = container_of(host->pdata, struct sh_mobile_sdhi, mmc_data);
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clk_disable(priv->clk);
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}
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2011-06-20 23:00:10 +00:00
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static int sh_mobile_sdhi_wait_idle(struct tmio_mmc_host *host)
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{
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int timeout = 1000;
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while (--timeout && !(sd_ctrl_read16(host, CTL_STATUS2) & (1 << 13)))
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udelay(1);
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if (!timeout) {
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dev_warn(host->pdata->dev, "timeout waiting for SD bus idle\n");
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return -EBUSY;
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}
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return 0;
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}
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static int sh_mobile_sdhi_write16_hook(struct tmio_mmc_host *host, int addr)
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{
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switch (addr)
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{
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case CTL_SD_CMD:
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case CTL_STOP_INTERNAL_ACTION:
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case CTL_XFER_BLK_COUNT:
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case CTL_SD_CARD_CLK_CTL:
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case CTL_SD_XFER_LEN:
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case CTL_SD_MEM_CARD_OPT:
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case CTL_TRANSACTION_CTL:
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case CTL_DMA_ENABLE:
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return sh_mobile_sdhi_wait_idle(host);
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}
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return 0;
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}
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2012-03-09 09:16:00 +00:00
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static void sh_mobile_sdhi_cd_wakeup(const struct platform_device *pdev)
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{
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2013-06-03 04:41:03 +00:00
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mmc_detect_change(platform_get_drvdata(pdev), msecs_to_jiffies(100));
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2012-03-09 09:16:00 +00:00
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}
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static const struct sh_mobile_sdhi_ops sdhi_ops = {
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.cd_wakeup = sh_mobile_sdhi_cd_wakeup,
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};
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2013-02-15 15:13:56 +00:00
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static const struct of_device_id sh_mobile_sdhi_of_match[] = {
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{ .compatible = "renesas,shmobile-sdhi" },
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{ .compatible = "renesas,sh7372-sdhi" },
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2013-07-17 01:22:50 +00:00
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{ .compatible = "renesas,sh73a0-sdhi", .data = &sh_mobile_sdhi_of_cfg[0], },
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{ .compatible = "renesas,r8a73a4-sdhi", .data = &sh_mobile_sdhi_of_cfg[0], },
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2013-02-15 15:13:56 +00:00
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{ .compatible = "renesas,r8a7740-sdhi", .data = &sh_mobile_sdhi_of_cfg[0], },
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2013-07-17 01:22:50 +00:00
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{ .compatible = "renesas,r8a7778-sdhi", .data = &sh_mobile_sdhi_of_cfg[0], },
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{ .compatible = "renesas,r8a7779-sdhi", .data = &sh_mobile_sdhi_of_cfg[0], },
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{ .compatible = "renesas,r8a7790-sdhi", .data = &sh_mobile_sdhi_of_cfg[0], },
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2013-02-15 15:13:56 +00:00
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{},
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};
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MODULE_DEVICE_TABLE(of, sh_mobile_sdhi_of_match);
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2012-11-19 18:23:06 +00:00
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static int sh_mobile_sdhi_probe(struct platform_device *pdev)
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2009-10-02 02:22:09 +00:00
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{
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2013-02-15 15:13:56 +00:00
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const struct of_device_id *of_id =
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of_match_device(sh_mobile_sdhi_of_match, &pdev->dev);
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2009-10-02 02:22:09 +00:00
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struct sh_mobile_sdhi *priv;
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2010-05-19 18:34:16 +00:00
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struct tmio_mmc_data *mmc_data;
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struct sh_mobile_sdhi_info *p = pdev->dev.platform_data;
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2011-03-14 08:52:33 +00:00
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struct tmio_mmc_host *host;
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2011-08-26 08:42:39 +00:00
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int irq, ret, i = 0;
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bool multiplexed_isr = true;
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2013-04-26 15:47:19 +00:00
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struct tmio_mmc_dma *dma_priv;
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2009-10-02 02:22:09 +00:00
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2013-02-15 15:13:58 +00:00
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priv = devm_kzalloc(&pdev->dev, sizeof(struct sh_mobile_sdhi), GFP_KERNEL);
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2009-10-02 02:22:09 +00:00
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if (priv == NULL) {
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dev_err(&pdev->dev, "kzalloc failed\n");
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return -ENOMEM;
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}
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2010-05-19 18:34:16 +00:00
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mmc_data = &priv->mmc_data;
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2013-04-26 15:47:19 +00:00
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dma_priv = &priv->dma_priv;
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2010-05-19 18:34:16 +00:00
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2012-05-01 16:03:43 +00:00
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if (p) {
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if (p->init) {
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ret = p->init(pdev, &sdhi_ops);
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if (ret)
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2013-02-15 15:13:58 +00:00
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return ret;
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2012-05-01 16:03:43 +00:00
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}
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2012-03-16 16:19:29 +00:00
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}
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2013-02-15 15:13:58 +00:00
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priv->clk = devm_clk_get(&pdev->dev, NULL);
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2009-10-02 02:22:09 +00:00
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if (IS_ERR(priv->clk)) {
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ret = PTR_ERR(priv->clk);
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2012-11-28 09:24:21 +00:00
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dev_err(&pdev->dev, "cannot get clock: %d\n", ret);
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2011-03-14 08:52:33 +00:00
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goto eclkget;
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2009-10-02 02:22:09 +00:00
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}
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2012-06-20 17:10:32 +00:00
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mmc_data->clk_enable = sh_mobile_sdhi_clk_enable;
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mmc_data->clk_disable = sh_mobile_sdhi_clk_disable;
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2010-05-19 18:34:16 +00:00
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mmc_data->capabilities = MMC_CAP_MMC_HIGHSPEED;
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2013-02-15 15:13:50 +00:00
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mmc_data->write16_hook = sh_mobile_sdhi_write16_hook;
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2010-05-19 18:37:36 +00:00
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if (p) {
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2010-05-19 18:36:08 +00:00
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mmc_data->flags = p->tmio_flags;
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2010-05-19 18:37:36 +00:00
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mmc_data->ocr_mask = p->tmio_ocr_mask;
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2010-08-24 15:27:00 +00:00
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mmc_data->capabilities |= p->tmio_caps;
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2012-05-23 09:05:33 +00:00
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mmc_data->capabilities2 |= p->tmio_caps2;
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2012-02-09 21:57:10 +00:00
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mmc_data->cd_gpio = p->cd_gpio;
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2011-03-14 08:52:33 +00:00
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2011-05-24 10:24:07 +00:00
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if (p->dma_slave_tx > 0 && p->dma_slave_rx > 0) {
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2013-04-26 15:47:18 +00:00
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/*
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* Yes, we have to provide slave IDs twice to TMIO:
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* once as a filter parameter and once for channel
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* configuration as an explicit slave ID
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*/
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dma_priv->chan_priv_tx = (void *)p->dma_slave_tx;
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dma_priv->chan_priv_rx = (void *)p->dma_slave_rx;
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dma_priv->slave_id_tx = p->dma_slave_tx;
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dma_priv->slave_id_rx = p->dma_slave_rx;
|
2011-03-14 08:52:33 +00:00
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}
|
2010-05-19 18:37:36 +00:00
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}
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2010-05-19 18:34:16 +00:00
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2013-04-26 15:47:19 +00:00
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dma_priv->alignment_shift = 1; /* 2-byte alignment */
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dma_priv->filter = shdma_chan_filter;
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mmc_data->dma = dma_priv;
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|
2010-08-30 10:50:19 +00:00
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|
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/*
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* All SDHI blocks support 2-byte and larger block sizes in 4-bit
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* bus width mode.
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*/
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mmc_data->flags |= TMIO_MMC_BLKSZ_2BYTES;
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|
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|
2010-12-28 22:22:32 +00:00
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/*
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* All SDHI blocks support SDIO IRQ signalling.
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|
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*/
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mmc_data->flags |= TMIO_MMC_SDIO_IRQ;
|
|
|
|
|
2013-02-15 15:13:56 +00:00
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if (of_id && of_id->data) {
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|
|
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const struct sh_mobile_sdhi_of_data *of_data = of_id->data;
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|
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mmc_data->flags |= of_data->tmio_flags;
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|
|
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}
|
|
|
|
|
2011-03-14 08:52:33 +00:00
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ret = tmio_mmc_host_probe(&host, pdev, mmc_data);
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if (ret < 0)
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goto eprobe;
|
2009-10-02 02:22:09 +00:00
|
|
|
|
2011-08-26 08:42:39 +00:00
|
|
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/*
|
|
|
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* Allow one or more specific (named) ISRs or
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* one or more multiplexed (un-named) ISRs.
|
|
|
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*/
|
|
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|
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irq = platform_get_irq_byname(pdev, SH_MOBILE_SDHI_IRQ_CARD_DETECT);
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|
|
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if (irq >= 0) {
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multiplexed_isr = false;
|
2013-02-15 15:13:58 +00:00
|
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|
ret = devm_request_irq(&pdev->dev, irq, tmio_mmc_card_detect_irq, 0,
|
2011-08-26 08:42:39 +00:00
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dev_name(&pdev->dev), host);
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if (ret)
|
2013-02-15 15:13:58 +00:00
|
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goto eirq;
|
2011-08-26 08:42:39 +00:00
|
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}
|
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|
|
irq = platform_get_irq_byname(pdev, SH_MOBILE_SDHI_IRQ_SDIO);
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|
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if (irq >= 0) {
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|
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multiplexed_isr = false;
|
2013-02-15 15:13:58 +00:00
|
|
|
ret = devm_request_irq(&pdev->dev, irq, tmio_mmc_sdio_irq, 0,
|
2011-08-26 08:42:39 +00:00
|
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dev_name(&pdev->dev), host);
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if (ret)
|
2013-02-15 15:13:58 +00:00
|
|
|
goto eirq;
|
2011-08-26 08:42:39 +00:00
|
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|
}
|
|
|
|
|
|
|
|
irq = platform_get_irq_byname(pdev, SH_MOBILE_SDHI_IRQ_SDCARD);
|
|
|
|
if (irq >= 0) {
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|
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multiplexed_isr = false;
|
2013-02-15 15:13:58 +00:00
|
|
|
ret = devm_request_irq(&pdev->dev, irq, tmio_mmc_sdcard_irq, 0,
|
2011-05-06 11:02:45 +00:00
|
|
|
dev_name(&pdev->dev), host);
|
2011-08-26 08:42:39 +00:00
|
|
|
if (ret)
|
2013-02-15 15:13:58 +00:00
|
|
|
goto eirq;
|
2011-08-26 08:42:39 +00:00
|
|
|
} else if (!multiplexed_isr) {
|
|
|
|
dev_err(&pdev->dev,
|
|
|
|
"Principal SD-card IRQ is missing among named interrupts\n");
|
|
|
|
ret = irq;
|
2013-02-15 15:13:58 +00:00
|
|
|
goto eirq;
|
2011-08-26 08:42:39 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
if (multiplexed_isr) {
|
|
|
|
while (1) {
|
|
|
|
irq = platform_get_irq(pdev, i);
|
|
|
|
if (irq < 0)
|
|
|
|
break;
|
|
|
|
i++;
|
2013-02-15 15:13:58 +00:00
|
|
|
ret = devm_request_irq(&pdev->dev, irq, tmio_mmc_irq, 0,
|
2011-08-26 08:42:39 +00:00
|
|
|
dev_name(&pdev->dev), host);
|
|
|
|
if (ret)
|
2013-02-15 15:13:58 +00:00
|
|
|
goto eirq;
|
2011-05-06 11:02:45 +00:00
|
|
|
}
|
2011-08-26 08:42:39 +00:00
|
|
|
|
|
|
|
/* There must be at least one IRQ source */
|
2013-05-28 05:26:50 +00:00
|
|
|
if (!i) {
|
|
|
|
ret = irq;
|
2013-02-15 15:13:58 +00:00
|
|
|
goto eirq;
|
2013-05-28 05:26:50 +00:00
|
|
|
}
|
2011-05-06 11:02:33 +00:00
|
|
|
}
|
2011-08-26 08:42:39 +00:00
|
|
|
|
2011-05-06 11:02:41 +00:00
|
|
|
dev_info(&pdev->dev, "%s base at 0x%08lx clock rate %u MHz\n",
|
|
|
|
mmc_hostname(host->mmc), (unsigned long)
|
2012-02-09 21:57:10 +00:00
|
|
|
(platform_get_resource(pdev, IORESOURCE_MEM, 0)->start),
|
2012-11-28 09:24:13 +00:00
|
|
|
host->mmc->f_max / 1000000);
|
2009-10-02 02:22:09 +00:00
|
|
|
|
2011-03-14 08:52:33 +00:00
|
|
|
return ret;
|
2009-10-02 02:22:09 +00:00
|
|
|
|
2013-02-15 15:13:58 +00:00
|
|
|
eirq:
|
2011-05-06 11:02:33 +00:00
|
|
|
tmio_mmc_host_remove(host);
|
2011-03-14 08:52:33 +00:00
|
|
|
eprobe:
|
|
|
|
eclkget:
|
2012-05-01 16:03:43 +00:00
|
|
|
if (p && p->cleanup)
|
2012-03-16 16:19:29 +00:00
|
|
|
p->cleanup(pdev);
|
2009-10-02 02:22:09 +00:00
|
|
|
return ret;
|
|
|
|
}
|
|
|
|
|
|
|
|
static int sh_mobile_sdhi_remove(struct platform_device *pdev)
|
|
|
|
{
|
2011-03-14 08:52:33 +00:00
|
|
|
struct mmc_host *mmc = platform_get_drvdata(pdev);
|
|
|
|
struct tmio_mmc_host *host = mmc_priv(mmc);
|
2011-05-11 16:51:15 +00:00
|
|
|
struct sh_mobile_sdhi_info *p = pdev->dev.platform_data;
|
2011-05-06 11:02:45 +00:00
|
|
|
|
2011-05-27 14:54:05 +00:00
|
|
|
tmio_mmc_host_remove(host);
|
|
|
|
|
2012-05-01 16:03:43 +00:00
|
|
|
if (p && p->cleanup)
|
2012-03-16 16:19:29 +00:00
|
|
|
p->cleanup(pdev);
|
|
|
|
|
2009-10-02 02:22:09 +00:00
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
2011-05-05 16:13:12 +00:00
|
|
|
static const struct dev_pm_ops tmio_mmc_dev_pm_ops = {
|
|
|
|
.suspend = tmio_mmc_host_suspend,
|
|
|
|
.resume = tmio_mmc_host_resume,
|
2011-05-11 16:51:15 +00:00
|
|
|
.runtime_suspend = tmio_mmc_host_runtime_suspend,
|
|
|
|
.runtime_resume = tmio_mmc_host_runtime_resume,
|
2011-05-05 16:13:12 +00:00
|
|
|
};
|
|
|
|
|
2009-10-02 02:22:09 +00:00
|
|
|
static struct platform_driver sh_mobile_sdhi_driver = {
|
|
|
|
.driver = {
|
|
|
|
.name = "sh_mobile_sdhi",
|
|
|
|
.owner = THIS_MODULE,
|
2011-05-05 16:13:12 +00:00
|
|
|
.pm = &tmio_mmc_dev_pm_ops,
|
2012-05-01 16:03:43 +00:00
|
|
|
.of_match_table = sh_mobile_sdhi_of_match,
|
2009-10-02 02:22:09 +00:00
|
|
|
},
|
|
|
|
.probe = sh_mobile_sdhi_probe,
|
2012-11-19 18:20:26 +00:00
|
|
|
.remove = sh_mobile_sdhi_remove,
|
2009-10-02 02:22:09 +00:00
|
|
|
};
|
|
|
|
|
2011-11-26 04:55:43 +00:00
|
|
|
module_platform_driver(sh_mobile_sdhi_driver);
|
2009-10-02 02:22:09 +00:00
|
|
|
|
|
|
|
MODULE_DESCRIPTION("SuperH Mobile SDHI driver");
|
|
|
|
MODULE_AUTHOR("Magnus Damm");
|
|
|
|
MODULE_LICENSE("GPL v2");
|
2011-03-14 08:52:33 +00:00
|
|
|
MODULE_ALIAS("platform:sh_mobile_sdhi");
|