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Message-ID: <1532084355-31482-3-git-send-email-avienamo@nvidia.com>
Date: Fri, 20 Jul 2018 13:59:10 +0300
From: Aapo Vienamo <avienamo@...dia.com>
To: Rob Herring <robh+dt@...nel.org>,
Mark Rutland <mark.rutland@....com>,
Thierry Reding <thierry.reding@...il.com>,
Jonathan Hunter <jonathanh@...dia.com>,
Mikko Perttunen <mperttunen@...dia.com>,
"Laxman Dewangan" <ldewangan@...dia.com>
CC: Aapo Vienamo <avienamo@...dia.com>, <devicetree@...r.kernel.org>,
<linux-tegra@...r.kernel.org>, <linux-kernel@...r.kernel.org>
Subject: [PATCH v5 2/7] soc/tegra: pmc: Factor out DPD register bit calculation
Factor out the the code to calculate the correct DPD register and bit
number for a given pad. This logic will be needed to query the status
register.
Signed-off-by: Aapo Vienamo <avienamo@...dia.com>
Acked-by: Jon Hunter <jonathanh@...dia.com>
---
drivers/soc/tegra/pmc.c | 20 +++++++++++++++++---
1 file changed, 17 insertions(+), 3 deletions(-)
diff --git a/drivers/soc/tegra/pmc.c b/drivers/soc/tegra/pmc.c
index f926332..393ca72 100644
--- a/drivers/soc/tegra/pmc.c
+++ b/drivers/soc/tegra/pmc.c
@@ -922,11 +922,12 @@ tegra_io_pad_find(struct tegra_pmc *pmc, enum tegra_io_pad id)
return NULL;
}
-static int tegra_io_pad_prepare(enum tegra_io_pad id, unsigned long *request,
- unsigned long *status, u32 *mask)
+static int tegra_io_pad_get_dpd_register_bit(enum tegra_io_pad id,
+ unsigned long *request,
+ unsigned long *status,
+ u32 *mask)
{
const struct tegra_io_pad_soc *pad;
- unsigned long rate, value;
pad = tegra_io_pad_find(pmc, id);
if (!pad) {
@@ -947,6 +948,19 @@ static int tegra_io_pad_prepare(enum tegra_io_pad id, unsigned long *request,
*request = pmc->soc->regs->dpd2_req;
}
+ return 0;
+}
+
+static int tegra_io_pad_prepare(enum tegra_io_pad id, unsigned long *request,
+ unsigned long *status, u32 *mask)
+{
+ unsigned long rate, value;
+ int err;
+
+ err = tegra_io_pad_get_dpd_register_bit(id, request, status, mask);
+ if (err)
+ return err;
+
if (pmc->clk) {
rate = clk_get_rate(pmc->clk);
if (!rate) {
--
2.7.4
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