diff options
author | Vivek Gautam <vivek.gautam@codeaurora.org> | 2017-07-19 17:59:08 +0200 |
---|---|---|
committer | Thierry Reding <treding@nvidia.com> | 2018-03-19 09:42:39 +0100 |
commit | 4c817ccf73abaf7b06a2630e8352d82648c8bc70 (patch) | |
tree | 5d2f68eb642bfa3c99fde676b8ffd7a085f190b5 /drivers/soc/tegra/pmc.c | |
parent | 507c655a06c8553a67122c371608b024b997b0e0 (diff) |
soc/tegra: pmc: Use the new reset APIs to manage reset controllers
Make use of of_reset_control_array_get_exclusive() to manage
an array of reset controllers available with the device.
Cc: Jon Hunter <jonathanh@nvidia.com>
Cc: Thierry Reding <treding@nvidia.com>
Signed-off-by: Vivek Gautam <vivek.gautam@codeaurora.org>
[p.zabel@pengutronix.de: switch to hidden reset control array]
Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
Acked-by: Jon Hunter <jonathanh@nvidia.com>
Signed-off-by: Thierry Reding <treding@nvidia.com>
Diffstat (limited to 'drivers/soc/tegra/pmc.c')
-rw-r--r-- | drivers/soc/tegra/pmc.c | 92 |
1 files changed, 18 insertions, 74 deletions
diff --git a/drivers/soc/tegra/pmc.c b/drivers/soc/tegra/pmc.c index 0efdc4ec019f..d9fcdb592b39 100644 --- a/drivers/soc/tegra/pmc.c +++ b/drivers/soc/tegra/pmc.c @@ -127,8 +127,7 @@ struct tegra_powergate { unsigned int id; struct clk **clks; unsigned int num_clks; - struct reset_control **resets; - unsigned int num_resets; + struct reset_control *reset; }; struct tegra_io_pad_soc { @@ -369,34 +368,6 @@ out: return err; } -static int tegra_powergate_reset_assert(struct tegra_powergate *pg) -{ - unsigned int i; - int err; - - for (i = 0; i < pg->num_resets; i++) { - err = reset_control_assert(pg->resets[i]); - if (err) - return err; - } - - return 0; -} - -static int tegra_powergate_reset_deassert(struct tegra_powergate *pg) -{ - unsigned int i; - int err; - - for (i = 0; i < pg->num_resets; i++) { - err = reset_control_deassert(pg->resets[i]); - if (err) - return err; - } - - return 0; -} - int __weak tegra210_clk_handle_mbist_war(unsigned int id) { return 0; @@ -407,7 +378,7 @@ static int tegra_powergate_power_up(struct tegra_powergate *pg, { int err; - err = tegra_powergate_reset_assert(pg); + err = reset_control_assert(pg->reset); if (err) return err; @@ -431,7 +402,7 @@ static int tegra_powergate_power_up(struct tegra_powergate *pg, usleep_range(10, 20); - err = tegra_powergate_reset_deassert(pg); + err = reset_control_deassert(pg->reset); if (err) goto powergate_off; @@ -467,7 +438,7 @@ static int tegra_powergate_power_down(struct tegra_powergate *pg) usleep_range(10, 20); - err = tegra_powergate_reset_assert(pg); + err = reset_control_assert(pg->reset); if (err) goto disable_clks; @@ -486,7 +457,7 @@ static int tegra_powergate_power_down(struct tegra_powergate *pg) assert_resets: tegra_powergate_enable_clocks(pg); usleep_range(10, 20); - tegra_powergate_reset_deassert(pg); + reset_control_deassert(pg->reset); usleep_range(10, 20); disable_clks: @@ -597,8 +568,7 @@ int tegra_powergate_sequence_power_up(unsigned int id, struct clk *clk, pg.id = id; pg.clks = &clk; pg.num_clks = 1; - pg.resets = &rst; - pg.num_resets = 1; + pg.reset = rst; pg.pmc = pmc; err = tegra_powergate_power_up(&pg, false); @@ -787,45 +757,22 @@ err: static int tegra_powergate_of_get_resets(struct tegra_powergate *pg, struct device_node *np, bool off) { - struct reset_control *rst; - unsigned int i, count; int err; - count = of_count_phandle_with_args(np, "resets", "#reset-cells"); - if (count == 0) - return -ENODEV; - - pg->resets = kcalloc(count, sizeof(rst), GFP_KERNEL); - if (!pg->resets) - return -ENOMEM; - - for (i = 0; i < count; i++) { - pg->resets[i] = of_reset_control_get_by_index(np, i); - if (IS_ERR(pg->resets[i])) { - err = PTR_ERR(pg->resets[i]); - goto error; - } - - if (off) - err = reset_control_assert(pg->resets[i]); - else - err = reset_control_deassert(pg->resets[i]); - - if (err) { - reset_control_put(pg->resets[i]); - goto error; - } + pg->reset = of_reset_control_array_get_exclusive(np); + if (IS_ERR(pg->reset)) { + err = PTR_ERR(pg->reset); + pr_err("failed to get device resets: %d\n", err); + return err; } - pg->num_resets = count; - - return 0; - -error: - while (i--) - reset_control_put(pg->resets[i]); + if (off) + err = reset_control_assert(pg->reset); + else + err = reset_control_deassert(pg->reset); - kfree(pg->resets); + if (err) + reset_control_put(pg->reset); return err; } @@ -917,10 +864,7 @@ remove_genpd: pm_genpd_remove(&pg->genpd); remove_resets: - while (pg->num_resets--) - reset_control_put(pg->resets[pg->num_resets]); - - kfree(pg->resets); + reset_control_put(pg->reset); remove_clks: while (pg->num_clks--) |