From: Aapo Vienamo <avienamo@nvidia.com>
To: Rob Herring <robh+dt@kernel.org>,
Mark Rutland <mark.rutland@arm.com>,
Thierry Reding <thierry.reding@gmail.com>,
Jonathan Hunter <jonathanh@nvidia.com>,
Ulf Hansson <ulf.hansson@linaro.org>,
Adrian Hunter <adrian.hunter@intel.com>,
Mikko Perttunen <mperttunen@nvidia.com>,
"Stefan Agner" <stefan@agner.ch>
Cc: <devicetree@vger.kernel.org>, <linux-tegra@vger.kernel.org>,
<linux-kernel@vger.kernel.org>, <linux-mmc@vger.kernel.org>,
Aapo Vienamo <avienamo@nvidia.com>
Subject: [PATCH 07/40] soc/tegra: pmc: Implement tegra_io_pad_is_powered()
Date: Wed, 1 Aug 2018 19:31:57 +0300 [thread overview]
Message-ID: <1533141150-10511-8-git-send-email-avienamo@nvidia.com> (raw)
In-Reply-To: <1533141150-10511-1-git-send-email-avienamo@nvidia.com>
Implement a function to query whether a pad is in deep power down mode.
This will is needed by the pinctrl callbacks.
Signed-off-by: Aapo Vienamo <avienamo@nvidia.com>
Acked-by: Jon Hunter <jonathanh@nvidia.com>
---
drivers/soc/tegra/pmc.c | 16 ++++++++++++++++
1 file changed, 16 insertions(+)
diff --git a/drivers/soc/tegra/pmc.c b/drivers/soc/tegra/pmc.c
index 393ca72..784c182 100644
--- a/drivers/soc/tegra/pmc.c
+++ b/drivers/soc/tegra/pmc.c
@@ -1075,6 +1075,22 @@ int tegra_io_pad_power_disable(enum tegra_io_pad id)
}
EXPORT_SYMBOL(tegra_io_pad_power_disable);
+static int tegra_io_pad_is_powered(enum tegra_io_pad id)
+{
+ unsigned long request, status;
+ u32 mask;
+ u32 value;
+ int err;
+
+ err = tegra_io_pad_get_dpd_register_bit(id, &request, &status, &mask);
+ if (err)
+ return err;
+
+ value = tegra_pmc_readl(status);
+
+ return !(value & mask);
+}
+
int tegra_io_pad_set_voltage(enum tegra_io_pad id,
enum tegra_io_pad_voltage voltage)
{
--
2.7.4
next prev parent reply other threads:[~2018-08-01 16:33 UTC|newest]
Thread overview: 60+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-08-01 16:31 [PATCH 00/40] Tegra SDHCI add support for HS200 and UHS signaling Aapo Vienamo
2018-08-01 16:31 ` [PATCH 01/40] dt-bindings: Add Tegra PMC pad configuration bindings Aapo Vienamo
2018-08-09 12:13 ` Thierry Reding
2018-08-09 16:24 ` Aapo Vienamo
2018-08-01 16:31 ` [PATCH 02/40] dt-bindings: mmc: tegra: Add pad voltage control properties Aapo Vienamo
2018-08-09 12:15 ` Thierry Reding
2018-08-09 16:36 ` Aapo Vienamo
2018-08-01 16:31 ` [PATCH 03/40] dt-bindings: Add Tegra SDHCI pad pdpu offset bindings Aapo Vienamo
2018-08-09 12:18 ` Thierry Reding
2018-08-01 16:31 ` [PATCH 04/40] dt-bindings: mmc: Add Tegra SDHCI sampling trimmer values Aapo Vienamo
2018-08-01 16:31 ` [PATCH 05/40] soc/tegra: pmc: Fix pad voltage configuration for Tegra186 Aapo Vienamo
2018-08-09 12:20 ` Thierry Reding
2018-08-01 16:31 ` [PATCH 06/40] soc/tegra: pmc: Factor out DPD register bit calculation Aapo Vienamo
2018-08-01 16:31 ` Aapo Vienamo [this message]
2018-08-09 12:22 ` [PATCH 07/40] soc/tegra: pmc: Implement tegra_io_pad_is_powered() Thierry Reding
2018-08-01 16:31 ` [PATCH 08/40] soc/tegra: pmc: Use X macro to generate IO pad tables Aapo Vienamo
2018-08-01 16:31 ` [PATCH 09/40] soc/tegra: pmc: Remove public pad voltage APIs Aapo Vienamo
2018-08-01 16:32 ` [PATCH 10/40] soc/tegra: pmc: Implement pad configuration via pinctrl Aapo Vienamo
2018-08-09 12:27 ` Thierry Reding
2018-08-09 12:44 ` Aapo Vienamo
2018-08-09 13:12 ` Thierry Reding
2018-08-01 16:32 ` [PATCH 11/40] mmc: sdhci: Add a quirk to skip clearing the transfer mode register on tuning Aapo Vienamo
2018-08-01 16:32 ` [PATCH 12/40] mmc: tegra: Reconfigure pad voltages during voltage switching Aapo Vienamo
2018-08-09 12:43 ` Thierry Reding
2018-08-09 12:52 ` Aapo Vienamo
2018-08-09 13:14 ` Thierry Reding
2018-08-01 16:32 ` [PATCH 13/40] mmc: tegra: Poll for calibration completion Aapo Vienamo
2018-08-09 12:46 ` Thierry Reding
2018-08-09 12:56 ` Aapo Vienamo
2018-08-09 13:44 ` Thierry Reding
2018-08-01 16:32 ` [PATCH 14/40] mmc: tegra: Set calibration pad voltage reference Aapo Vienamo
2018-08-01 16:32 ` [PATCH 15/40] mmc: tegra: Power on the calibration pad Aapo Vienamo
2018-08-09 12:52 ` Thierry Reding
2018-08-01 16:32 ` [PATCH 16/40] mmc: tegra: Disable card clock during pad calibration Aapo Vienamo
2018-08-09 12:54 ` Thierry Reding
2018-08-01 16:32 ` [PATCH 17/40] mmc: tegra: Program pad autocal offsets from dt Aapo Vienamo
2018-08-01 16:32 ` [PATCH 18/40] mmc: tegra: Perform pad calibration after voltage switch Aapo Vienamo
2018-08-01 16:32 ` [PATCH 19/40] mmc: tegra: Enable pad calibration on Tegra210 and Tegra186 Aapo Vienamo
2018-08-01 16:32 ` [PATCH 20/40] mmc: tegra: Add a workaround for tap value change glitch Aapo Vienamo
2018-08-09 12:58 ` Thierry Reding
2018-08-01 16:32 ` [PATCH 21/40] mmc: tegra: Parse default trim and tap from dt Aapo Vienamo
2018-08-01 16:32 ` [PATCH 22/40] mmc: tegra: Configure default tap values Aapo Vienamo
2018-08-01 16:32 ` [PATCH 23/40] mmc: tegra: Configure default trim value on reset Aapo Vienamo
2018-08-01 16:32 ` [PATCH 24/40] mmc: tegra: Use standard SDHCI tuning on Tegra210 and Tegra186 Aapo Vienamo
2018-08-01 16:32 ` [PATCH 25/40] mmc: sdhci: Add a quirk to disable card clock during tuning Aapo Vienamo
2018-08-01 16:32 ` [PATCH 26/40] mmc: tegra: Enable workaround for tuning transfer mode bug Aapo Vienamo
2018-08-01 16:32 ` [PATCH 27/40] mmc: tegra: Set SDHCI_QUIRK2_TUNE_DIS_CARD_CLK on Tegra210 Aapo Vienamo
2018-08-01 16:32 ` [PATCH 28/40] mmc: tegra: Enable UHS and HS200 modes for Tegra210 Aapo Vienamo
2018-08-01 16:32 ` [PATCH 29/40] mmc: tegra: Enable UHS and HS200 modes for Tegra186 Aapo Vienamo
2018-08-01 16:32 ` [PATCH 30/40] arm64: dts: Add Tegra210 sdmmc pinctrl voltage states Aapo Vienamo
2018-08-01 16:32 ` [PATCH 31/40] arm64: dts: Add Tegra186 " Aapo Vienamo
2018-08-01 16:32 ` [PATCH 32/40] arm64: dts: tegra210-p2180: Allow ldo2 to go down to 1.8 V Aapo Vienamo
2018-08-01 16:32 ` [PATCH 33/40] arm64: dts: tegra210-p2180: Correct sdmmc4 vqmmc-supply Aapo Vienamo
2018-08-01 16:32 ` [PATCH 34/40] arm64: dts: tegra210-p2597: Remove no-1-8-v from sdmmc1 Aapo Vienamo
2018-08-01 16:32 ` [PATCH 35/40] arm64: dts: tegra186: Add sdmmc pad auto calibration offsets Aapo Vienamo
2018-08-01 16:32 ` [PATCH 36/40] arm64: dts: tegra210: " Aapo Vienamo
2018-08-01 16:32 ` [PATCH 37/40] arm64: dts: tegra210: Add SDHCI tap and trim values Aapo Vienamo
2018-08-01 16:32 ` [PATCH 38/40] arm64: dts: tegra186: " Aapo Vienamo
2018-08-01 16:32 ` [PATCH 39/40] arm64: dts: tegra186: Assign clocks for sdmmc1 and sdmmc4 Aapo Vienamo
2018-08-01 16:32 ` [PATCH 40/40] arm64: dts: tegra210: " Aapo Vienamo
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