From: Adrian Hunter <adrian.hunter@nokia.com>
To: Pierre Ossman <drzeus-mmc@drzeus.cx>
Cc: Jarkko Lavinen <jarkko.lavinen@nokia.com>,
Adrian Hunter <adrian.hunter@nokia.com>,
Grazvydas Ignotas <notasas@gmail.com>,
David Brownell <david-b@pacbell.net>,
linux-omap Mailing List <linux-omap@vger.kernel.org>,
Tony Lindgren <tony@atomide.com>,
lkml <linux-kernel@vger.kernel.org>
Subject: [PATCH 4/10] OMAP: HSMMC: Add 8-bit bus width mode support
Date: Thu, 12 Mar 2009 18:23:19 +0200 [thread overview]
Message-ID: <20090312162319.19421.94489.sendpatchset@ahunter-laptop> (raw)
In-Reply-To: <20090312162252.19421.34019.sendpatchset@ahunter-laptop>
>From 7961505a57b8a9dff7b6fc8bbee654165a1b05b2 Mon Sep 17 00:00:00 2001
From: Jarkko Lavinen <jarkko.lavinen@nokia.com>
Date: Fri, 21 Nov 2008 16:49:54 +0200
Subject: [PATCH] OMAP: HSMMC: Add 8-bit bus width mode support
Signed-off-by: Jarkko Lavinen <jarkko.lavinen@nokia.com>
---
drivers/mmc/host/omap_hsmmc.c | 12 +++++++++++-
1 files changed, 11 insertions(+), 1 deletions(-)
diff --git a/drivers/mmc/host/omap_hsmmc.c b/drivers/mmc/host/omap_hsmmc.c
index 483e591..fd1657a 100644
--- a/drivers/mmc/host/omap_hsmmc.c
+++ b/drivers/mmc/host/omap_hsmmc.c
@@ -77,6 +77,7 @@
#define MSBS (1 << 5)
#define BCE (1 << 1)
#define FOUR_BIT (1 << 1)
+#define DW8 (1 << 5)
#define CC 0x1
#define TC 0x02
#define OD 0x1
@@ -817,6 +818,7 @@ static void omap_mmc_set_ios(struct mmc_host *mmc, struct mmc_ios *ios)
u16 dsor = 0;
unsigned long regval;
unsigned long timeout;
+ u32 con;
switch (ios->power_mode) {
case MMC_POWER_OFF:
@@ -827,12 +829,18 @@ static void omap_mmc_set_ios(struct mmc_host *mmc, struct mmc_ios *ios)
break;
}
+ con = OMAP_HSMMC_READ(host->base, CON);
switch (mmc->ios.bus_width) {
+ case MMC_BUS_WIDTH_8:
+ OMAP_HSMMC_WRITE(host->base, CON, con | DW8);
+ break;
case MMC_BUS_WIDTH_4:
+ OMAP_HSMMC_WRITE(host->base, CON, con & ~DW8);
OMAP_HSMMC_WRITE(host->base, HCTL,
OMAP_HSMMC_READ(host->base, HCTL) | FOUR_BIT);
break;
case MMC_BUS_WIDTH_1:
+ OMAP_HSMMC_WRITE(host->base, CON, con & ~DW8);
OMAP_HSMMC_WRITE(host->base, HCTL,
OMAP_HSMMC_READ(host->base, HCTL) & ~FOUR_BIT);
break;
@@ -1057,7 +1065,9 @@ static int __init omap_mmc_probe(struct platform_device *pdev)
mmc->ocr_avail = mmc_slot(host).ocr_mask;
mmc->caps |= MMC_CAP_MMC_HIGHSPEED | MMC_CAP_SD_HIGHSPEED;
- if (pdata->slots[host->slot_id].wires >= 4)
+ if (pdata->slots[host->slot_id].wires >= 8)
+ mmc->caps |= MMC_CAP_8_BIT_DATA;
+ else if (pdata->slots[host->slot_id].wires >= 4)
mmc->caps |= MMC_CAP_4_BIT_DATA;
omap_hsmmc_init(host);
--
1.5.6.3
next prev parent reply other threads:[~2009-03-12 16:25 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-03-12 16:22 [PATCH 0/10] omap_hsmmc patches Adrian Hunter
2009-03-12 16:22 ` [PATCH 1/10] OMAP: HSMMC: Do dma cleanup also with data CRC errors Adrian Hunter
2009-03-12 16:23 ` [PATCH 2/10] OMAP: HSMMC: Fix response type for busy after response Adrian Hunter
2009-03-12 16:23 ` [PATCH 3/10] OMAP: HSMMC: Implement scatter-gather emulation Adrian Hunter
2009-03-12 16:23 ` Adrian Hunter [this message]
2009-03-12 16:23 ` [PATCH 5/10] OMAP: HSMMC: Allow cover switch to cause rescan Adrian Hunter
2009-03-12 16:23 ` [PATCH 6/10] OMAP: HSMMC: Do not prefix slot name Adrian Hunter
2009-03-12 16:23 ` [PATCH 7/10] OMAP: HSMMC: Disable SDBP at suspend Adrian Hunter
2009-03-12 16:23 ` [PATCH 8/10] OMAP: HSMMC: Make driver support dynamic idle Adrian Hunter
2009-03-22 14:30 ` Pierre Ossman
2009-03-22 14:30 ` Pierre Ossman
2009-03-12 16:23 ` [PATCH 9/10] OMAP: HSMMC: Fix MMC3 dma Adrian Hunter
2009-03-13 10:16 ` Adrian Hunter
2009-03-12 16:24 ` [PATCH 10/10] OMAP: HSMMC: Wait for SDBP Adrian Hunter
2009-03-22 14:31 ` [PATCH 0/10] omap_hsmmc patches Pierre Ossman
2009-03-22 14:31 ` Pierre Ossman
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20090312162319.19421.94489.sendpatchset@ahunter-laptop \
--to=adrian.hunter@nokia.com \
--cc=david-b@pacbell.net \
--cc=drzeus-mmc@drzeus.cx \
--cc=jarkko.lavinen@nokia.com \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-omap@vger.kernel.org \
--cc=notasas@gmail.com \
--cc=tony@atomide.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.