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| author | Dmitry Osipenko <digetx@gmail.com> | 2020-12-28 18:49:16 +0300 |
|---|---|---|
| committer | Krzysztof Kozlowski <krzk@kernel.org> | 2021-01-05 18:00:09 +0100 |
| commit | 281462e593483350d8072a118c6e072c550a80fa (patch) | |
| tree | aedb622d4b8e73213c869eae85999fe03cced566 /include/linux/clk | |
| parent | 5c8fe583cce542aa0b84adc939ce85293de36e5e (diff) | |
| download | lwn-281462e593483350d8072a118c6e072c550a80fa.tar.gz lwn-281462e593483350d8072a118c6e072c550a80fa.zip | |
memory: tegra124-emc: Make driver modular
Add modularization support to the Tegra124 EMC driver, which now can be
compiled as a loadable kernel module.
Note that EMC clock must be registered at clk-init time, otherwise PLLM
will be disabled as unused clock at boot time if EMC driver is compiled
as a module. Hence add a prepare/complete callbacks. similarly to what is
done for the Tegra20/30 EMC drivers.
Tested-by: Nicolas Chauvet <kwizart@gmail.com>
Signed-off-by: Dmitry Osipenko <digetx@gmail.com>
Link: https://lore.kernel.org/r/20201228154920.18846-2-digetx@gmail.com
Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>
Diffstat (limited to 'include/linux/clk')
| -rw-r--r-- | include/linux/clk/tegra.h | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/include/linux/clk/tegra.h b/include/linux/clk/tegra.h index 3f01d43f0598..eb016fc9cc0b 100644 --- a/include/linux/clk/tegra.h +++ b/include/linux/clk/tegra.h @@ -136,6 +136,7 @@ extern void tegra210_clk_emc_dll_update_setting(u32 emc_dll_src_value); extern void tegra210_clk_emc_update_setting(u32 emc_src_value); struct clk; +struct tegra_emc; typedef long (tegra20_clk_emc_round_cb)(unsigned long rate, unsigned long min_rate, @@ -146,6 +147,13 @@ void tegra20_clk_set_emc_round_callback(tegra20_clk_emc_round_cb *round_cb, void *cb_arg); int tegra20_clk_prepare_emc_mc_same_freq(struct clk *emc_clk, bool same); +typedef int (tegra124_emc_prepare_timing_change_cb)(struct tegra_emc *emc, + unsigned long rate); +typedef void (tegra124_emc_complete_timing_change_cb)(struct tegra_emc *emc, + unsigned long rate); +void tegra124_clk_set_emc_callbacks(tegra124_emc_prepare_timing_change_cb *prep_cb, + tegra124_emc_complete_timing_change_cb *complete_cb); + struct tegra210_clk_emc_config { unsigned long rate; bool same_freq; |