From: Jun Nie <jun.nie-QSEj5FYQhm4dnm+yROfE0A@public.gmane.org>
To: robh+dt-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org,
mark.rutland-5wv7dgnIgG8@public.gmane.org,
shawn.guo-QSEj5FYQhm4dnm+yROfE0A@public.gmane.org,
xie.baoyou-Th6q7B73Y6EnDS1+zs4M5A@public.gmane.org,
devicetree-u79uwXL29TY76Z2rM5mHXA@public.gmane.org
Cc: ulf.hansson-QSEj5FYQhm4dnm+yROfE0A@public.gmane.org,
jh80.chung-Sze3O3UU22JBDgjK7y7TUQ@public.gmane.org,
jason.liu-QSEj5FYQhm4dnm+yROfE0A@public.gmane.org,
chen.chaokai-Th6q7B73Y6EnDS1+zs4M5A@public.gmane.org,
lai.binz-Th6q7B73Y6EnDS1+zs4M5A@public.gmane.org,
linux-mmc-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
Jun Nie <jun.nie-QSEj5FYQhm4dnm+yROfE0A@public.gmane.org>
Subject: [PATCH v9 2/5] mmc: dw: Add fifo address property
Date: Fri, 6 Jan 2017 12:24:43 +0800 [thread overview]
Message-ID: <1483676686-17011-3-git-send-email-jun.nie@linaro.org> (raw)
In-Reply-To: <1483676686-17011-1-git-send-email-jun.nie-QSEj5FYQhm4dnm+yROfE0A@public.gmane.org>
The FIFO address may break default address assumption of 0x100
(version < 0x240A) and 0x200(version >= 0x240A) in current driver.
The new property is introduced to override fifo address via DT
node information.
Signed-off-by: Jun Nie <jun.nie-QSEj5FYQhm4dnm+yROfE0A@public.gmane.org>
Reviewed-by: Shawn Lin <shawn.lin-TNX95d0MmH7DzftRWevZcw@public.gmane.org>
---
drivers/mmc/host/dw_mmc.c | 6 +++++-
include/linux/mmc/dw_mmc.h | 2 ++
2 files changed, 7 insertions(+), 1 deletion(-)
diff --git a/drivers/mmc/host/dw_mmc.c b/drivers/mmc/host/dw_mmc.c
index b44306b..b600170 100644
--- a/drivers/mmc/host/dw_mmc.c
+++ b/drivers/mmc/host/dw_mmc.c
@@ -2977,6 +2977,8 @@ static struct dw_mci_board *dw_mci_parse_dt(struct dw_mci *host)
of_property_read_u32(np, "card-detect-delay", &pdata->detect_delay_ms);
+ of_property_read_u32(np, "data-addr", &host->data_addr_override);
+
if (!of_property_read_u32(np, "clock-frequency", &clock_frequency))
pdata->bus_hz = clock_frequency;
@@ -3180,7 +3182,9 @@ int dw_mci_probe(struct dw_mci *host)
host->verid = SDMMC_GET_VERID(mci_readl(host, VERID));
dev_info(host->dev, "Version ID is %04x\n", host->verid);
- if (host->verid < DW_MMC_240A)
+ if (host->data_addr_override)
+ host->fifo_reg = host->regs + host->data_addr_override;
+ else if (host->verid < DW_MMC_240A)
host->fifo_reg = host->regs + DATA_OFFSET;
else
host->fifo_reg = host->regs + DATA_240A_OFFSET;
diff --git a/include/linux/mmc/dw_mmc.h b/include/linux/mmc/dw_mmc.h
index 15db6f8..1c09cca 100644
--- a/include/linux/mmc/dw_mmc.h
+++ b/include/linux/mmc/dw_mmc.h
@@ -113,6 +113,7 @@ struct dw_mci_dma_slave {
* @ciu_clk: Pointer to card interface unit clock instance.
* @slot: Slots sharing this MMC controller.
* @fifo_depth: depth of FIFO.
+ * @data_addr_override: override fifo reg offset with this value.
* @data_shift: log2 of FIFO item size.
* @part_buf_start: Start index in part_buf.
* @part_buf_count: Bytes of partial data in part_buf.
@@ -160,6 +161,7 @@ struct dw_mci {
spinlock_t irq_lock;
void __iomem *regs;
void __iomem *fifo_reg;
+ u32 data_addr_override;
struct scatterlist *sg;
struct sg_mapping_iter sg_miter;
--
1.9.1
--
To unsubscribe from this list: send the line "unsubscribe devicetree" in
the body of a message to majordomo-u79uwXL29TY76Z2rM5mHXA@public.gmane.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
next prev parent reply other threads:[~2017-01-06 4:24 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <CGME20170106042538epcas4p1a06bd50f6335ae882f0f891b6a2f0f29@epcas4p1.samsung.com>
2017-01-06 4:24 ` [PATCH v9 0/5] Add intial support to DW MMC host on ZTE SoC Jun Nie
2017-01-06 4:24 ` [PATCH v9 1/5] Documentation: synopsys-dw-mshc: add binding for fifo quirks Jun Nie
2017-01-06 4:24 ` [PATCH v9 3/5] mmc: dw: Add fifo watermark alignment property Jun Nie
[not found] ` <1483676686-17011-1-git-send-email-jun.nie-QSEj5FYQhm4dnm+yROfE0A@public.gmane.org>
2017-01-06 4:24 ` Jun Nie [this message]
2017-01-06 4:24 ` [PATCH v9 4/5] mmc: dt-bindings: add ZTE ZX296718 MMC bindings Jun Nie
2017-01-06 4:24 ` [PATCH v9 5/5] mmc: zx: Initial support for ZX mmc controller Jun Nie
2017-01-11 6:51 ` [PATCH v9 0/5] Add intial support to DW MMC host on ZTE SoC Jaehoon Chung
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=1483676686-17011-3-git-send-email-jun.nie@linaro.org \
--to=jun.nie-qsej5fyqhm4dnm+yrofe0a@public.gmane.org \
--cc=chen.chaokai-Th6q7B73Y6EnDS1+zs4M5A@public.gmane.org \
--cc=devicetree-u79uwXL29TY76Z2rM5mHXA@public.gmane.org \
--cc=jason.liu-QSEj5FYQhm4dnm+yROfE0A@public.gmane.org \
--cc=jh80.chung-Sze3O3UU22JBDgjK7y7TUQ@public.gmane.org \
--cc=lai.binz-Th6q7B73Y6EnDS1+zs4M5A@public.gmane.org \
--cc=linux-mmc-u79uwXL29TY76Z2rM5mHXA@public.gmane.org \
--cc=mark.rutland-5wv7dgnIgG8@public.gmane.org \
--cc=robh+dt-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org \
--cc=shawn.guo-QSEj5FYQhm4dnm+yROfE0A@public.gmane.org \
--cc=ulf.hansson-QSEj5FYQhm4dnm+yROfE0A@public.gmane.org \
--cc=xie.baoyou-Th6q7B73Y6EnDS1+zs4M5A@public.gmane.org \
/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 a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).