From: Shawn Lin <shawn.lin@rock-chips.com>
To: Jaehoon Chung <jh80.chung@samsung.com>,
Ulf Hansson <ulf.hansson@linaro.org>
Cc: Rob Herring <robh+dt@kernel.org>,
linux-mmc@vger.kernel.org, linux-kernel@vger.kernel.org,
Heiko Stuebner <heiko@sntech.de>,
linux-rockchip@lists.infradead.org, devicetree@vger.kernel.org,
Shawn Lin <shawn.lin@rock-chips.com>
Subject: [PATCH v2 4/6] mmc: dw_mmc: split out dw_mci_set_power_reg
Date: Sun, 7 Aug 2016 09:34:46 +0800 [thread overview]
Message-ID: <1470533686-16482-1-git-send-email-shawn.lin@rock-chips.com> (raw)
In-Reply-To: <1470533618-16312-1-git-send-email-shawn.lin@rock-chips.com>
Splite out dw_mci_set_power_reg to set PWREN register
in case that we need more complicated power control.
Signed-off-by: Shawn Lin <shawn.lin@rock-chips.com>
---
Changes in v2: None
drivers/mmc/host/dw_mmc.c | 26 ++++++++++++++++++--------
1 file changed, 18 insertions(+), 8 deletions(-)
diff --git a/drivers/mmc/host/dw_mmc.c b/drivers/mmc/host/dw_mmc.c
index 0e5ed23..c35a26a 100644
--- a/drivers/mmc/host/dw_mmc.c
+++ b/drivers/mmc/host/dw_mmc.c
@@ -1276,10 +1276,25 @@ static void dw_mci_request(struct mmc_host *mmc, struct mmc_request *mrq)
spin_unlock_bh(&host->lock);
}
+static inline void dw_mci_set_power_reg(struct dw_mci_slot *slot,
+ bool enable)
+{
+ u32 regs;
+
+ if (enable) {
+ regs = mci_readl(slot->host, PWREN);
+ regs |= (1 << slot->id);
+ mci_writel(slot->host, PWREN, regs);
+ } else {
+ regs = mci_readl(slot->host, PWREN);
+ regs &= ~(1 << slot->id);
+ mci_writel(slot->host, PWREN, regs);
+ }
+}
+
static int dw_mci_set_power(struct mmc_host *mmc, struct mmc_ios *ios)
{
struct dw_mci_slot *slot = mmc_priv(mmc);
- u32 regs;
switch (ios->power_mode) {
case MMC_POWER_UP:
@@ -1291,9 +1306,7 @@ static int dw_mci_set_power(struct mmc_host *mmc, struct mmc_ios *ios)
return -EINVAL;
}
set_bit(DW_MMC_CARD_NEED_INIT, &slot->flags);
- regs = mci_readl(slot->host, PWREN);
- regs |= (1 << slot->id);
- mci_writel(slot->host, PWREN, regs);
+ dw_mci_set_power_reg(slot, true);
break;
case MMC_POWER_ON:
if (!slot->host->vqmmc_enabled) {
@@ -1325,10 +1338,7 @@ static int dw_mci_set_power(struct mmc_host *mmc, struct mmc_ios *ios)
if (!IS_ERR(mmc->supply.vqmmc) && slot->host->vqmmc_enabled)
regulator_disable(mmc->supply.vqmmc);
slot->host->vqmmc_enabled = false;
-
- regs = mci_readl(slot->host, PWREN);
- regs &= ~(1 << slot->id);
- mci_writel(slot->host, PWREN, regs);
+ dw_mci_set_power_reg(slot, false);
break;
default:
break;
--
2.3.7
next prev parent reply other threads:[~2016-08-07 1:34 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <CGME20160807013720epcas1p235628058a90efa6f0062b03a4b2e4284@epcas1p2.samsung.com>
2016-08-07 1:33 ` [PATCH v2 0/6] Add support of inverting power control and some minor cleanup Shawn Lin
[not found] ` <1470533618-16312-1-git-send-email-shawn.lin-TNX95d0MmH7DzftRWevZcw@public.gmane.org>
2016-08-07 1:34 ` [PATCH v2 1/6] dt-bindings: rockchip-dw-mshc: add description of rockchip,power-invert Shawn Lin
[not found] ` <1470533644-16357-1-git-send-email-shawn.lin-TNX95d0MmH7DzftRWevZcw@public.gmane.org>
2016-08-10 18:46 ` Rob Herring
2016-08-07 1:34 ` [PATCH v2 3/6] mmc: dw_mmc: split out dw_mci_set_power Shawn Lin
2016-08-07 1:34 ` [PATCH v2 2/6] mmc: dw_mmc: cleanup power setting of set_ios callback Shawn Lin
2016-08-07 1:34 ` Shawn Lin [this message]
2016-08-07 1:34 ` [PATCH v2 5/6] mmc: dw_mmc: support inverted power control Shawn Lin
2016-08-07 1:35 ` [PATCH v2 6/6] mmc: dw_mmc-rockchip: add parsing of power control from DT Shawn Lin
2016-08-08 10:24 ` [PATCH v2 0/6] Add support of inverting power control and some minor cleanup Jaehoon Chung
2016-08-09 1:49 ` Shawn Lin
2016-08-09 2:12 ` Shawn Lin
2016-08-11 10:08 ` Jaehoon Chung
2016-08-12 2:57 ` Shawn Lin
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