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| author | Aapo Vienamo | 2018-08-10 20:08:08 +0200 |
|---|---|---|
| committer | Thierry Reding | 2018-08-27 12:25:17 +0200 |
| commit | 00ead3c913afe8872a428e56e2a815adb2b230d1 (patch) | |
| tree | d5156cc9193871b9c37d2d6a0fe6ecd80f3e60f0 /drivers/soc/tegra | |
| parent | soc/tegra: pmc: Fix pad voltage configuration for Tegra186 (diff) | |
| download | kernel-qcow2-linux-00ead3c913afe8872a428e56e2a815adb2b230d1.tar.gz kernel-qcow2-linux-00ead3c913afe8872a428e56e2a815adb2b230d1.tar.xz kernel-qcow2-linux-00ead3c913afe8872a428e56e2a815adb2b230d1.zip | |
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@nvidia.com>
Acked-by: Jon Hunter <jonathanh@nvidia.com>
Signed-off-by: Thierry Reding <treding@nvidia.com>
Diffstat (limited to 'drivers/soc/tegra')
| -rw-r--r-- | drivers/soc/tegra/pmc.c | 20 |
1 files changed, 17 insertions, 3 deletions
diff --git a/drivers/soc/tegra/pmc.c b/drivers/soc/tegra/pmc.c index 75fd907fce23..c04ff5eb7cad 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) { |