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Diffstat (limited to 'drivers/clk/tegra/clk-dfll.h')
| -rw-r--r-- | drivers/clk/tegra/clk-dfll.h | 55 |
1 files changed, 55 insertions, 0 deletions
diff --git a/drivers/clk/tegra/clk-dfll.h b/drivers/clk/tegra/clk-dfll.h new file mode 100644 index 000000000000..473411d098ae --- /dev/null +++ b/drivers/clk/tegra/clk-dfll.h @@ -0,0 +1,55 @@ +/* + * clk-dfll.h - prototypes and macros for the Tegra DFLL clocksource driver + * Copyright (C) 2013 NVIDIA Corporation. All rights reserved. + * + * Aleksandr Frid <afrid@nvidia.com> + * Paul Walmsley <pwalmsley@nvidia.com> + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + * + * This program is distributed in the hope that it will be useful, but WITHOUT + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or + * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for + * more details. + */ + +#ifndef __DRIVERS_CLK_TEGRA_CLK_DFLL_H +#define __DRIVERS_CLK_TEGRA_CLK_DFLL_H + +#include <linux/platform_device.h> +#include <linux/types.h> + +/** + * struct tegra_dfll_soc_data - SoC-specific hooks/integration for the DFLL driver + * @opp_dev: struct device * that holds the OPP table for the DFLL + * @min_millivolts: minimum voltage (in mV) that the DFLL can operate + * @tune0_low: DFLL tuning register 0 (low voltage range) + * @tune0_high: DFLL tuning register 0 (high voltage range) + * @tune1: DFLL tuning register 1 + * @assert_dvco_reset: fn ptr to place the DVCO in reset + * @deassert_dvco_reset: fn ptr to release the DVCO reset + * @set_clock_trimmers_high: fn ptr to tune clock trimmers for high voltage + * @set_clock_trimmers_low: fn ptr to tune clock trimmers for low voltage + */ +struct tegra_dfll_soc_data { + struct device *opp_dev; + unsigned int min_millivolts; + u32 tune0_low; + u32 tune0_high; + u32 tune1; + void (*assert_dvco_reset)(void); + void (*deassert_dvco_reset)(void); + void (*init_clock_trimmers)(void); + void (*set_clock_trimmers_high)(void); + void (*set_clock_trimmers_low)(void); +}; + +int tegra_dfll_register(struct platform_device *pdev, + struct tegra_dfll_soc_data *soc); +int tegra_dfll_unregister(struct platform_device *pdev); +int tegra_dfll_runtime_suspend(struct device *dev); +int tegra_dfll_runtime_resume(struct device *dev); + +#endif /* __DRIVERS_CLK_TEGRA_CLK_DFLL_H */ |