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kernel/linux-rt-4.4.41/include/linux/platform_data/si5351.h 3.45 KB
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  /*
   * Si5351A/B/C programmable clock generator platform_data.
   */
  
  #ifndef __LINUX_PLATFORM_DATA_SI5351_H__
  #define __LINUX_PLATFORM_DATA_SI5351_H__
  
  /**
   * enum si5351_pll_src - Si5351 pll clock source
   * @SI5351_PLL_SRC_DEFAULT: default, do not change eeprom config
   * @SI5351_PLL_SRC_XTAL: pll source clock is XTAL input
   * @SI5351_PLL_SRC_CLKIN: pll source clock is CLKIN input (Si5351C only)
   */
  enum si5351_pll_src {
  	SI5351_PLL_SRC_DEFAULT = 0,
  	SI5351_PLL_SRC_XTAL = 1,
  	SI5351_PLL_SRC_CLKIN = 2,
  };
  
  /**
   * enum si5351_multisynth_src - Si5351 multisynth clock source
   * @SI5351_MULTISYNTH_SRC_DEFAULT: default, do not change eeprom config
   * @SI5351_MULTISYNTH_SRC_VCO0: multisynth source clock is VCO0
   * @SI5351_MULTISYNTH_SRC_VCO1: multisynth source clock is VCO1/VXCO
   */
  enum si5351_multisynth_src {
  	SI5351_MULTISYNTH_SRC_DEFAULT = 0,
  	SI5351_MULTISYNTH_SRC_VCO0 = 1,
  	SI5351_MULTISYNTH_SRC_VCO1 = 2,
  };
  
  /**
   * enum si5351_clkout_src - Si5351 clock output clock source
   * @SI5351_CLKOUT_SRC_DEFAULT: default, do not change eeprom config
   * @SI5351_CLKOUT_SRC_MSYNTH_N: clkout N source clock is multisynth N
   * @SI5351_CLKOUT_SRC_MSYNTH_0_4: clkout N source clock is multisynth 0 (N<4)
   *                                or 4 (N>=4)
   * @SI5351_CLKOUT_SRC_XTAL: clkout N source clock is XTAL
   * @SI5351_CLKOUT_SRC_CLKIN: clkout N source clock is CLKIN (Si5351C only)
   */
  enum si5351_clkout_src {
  	SI5351_CLKOUT_SRC_DEFAULT = 0,
  	SI5351_CLKOUT_SRC_MSYNTH_N = 1,
  	SI5351_CLKOUT_SRC_MSYNTH_0_4 = 2,
  	SI5351_CLKOUT_SRC_XTAL = 3,
  	SI5351_CLKOUT_SRC_CLKIN = 4,
  };
  
  /**
   * enum si5351_drive_strength - Si5351 clock output drive strength
   * @SI5351_DRIVE_DEFAULT: default, do not change eeprom config
   * @SI5351_DRIVE_2MA: 2mA clock output drive strength
   * @SI5351_DRIVE_4MA: 4mA clock output drive strength
   * @SI5351_DRIVE_6MA: 6mA clock output drive strength
   * @SI5351_DRIVE_8MA: 8mA clock output drive strength
   */
  enum si5351_drive_strength {
  	SI5351_DRIVE_DEFAULT = 0,
  	SI5351_DRIVE_2MA = 2,
  	SI5351_DRIVE_4MA = 4,
  	SI5351_DRIVE_6MA = 6,
  	SI5351_DRIVE_8MA = 8,
  };
  
  /**
   * enum si5351_disable_state - Si5351 clock output disable state
   * @SI5351_DISABLE_DEFAULT: default, do not change eeprom config
   * @SI5351_DISABLE_LOW: CLKx is set to a LOW state when disabled
   * @SI5351_DISABLE_HIGH: CLKx is set to a HIGH state when disabled
   * @SI5351_DISABLE_FLOATING: CLKx is set to a FLOATING state when
   *				disabled
   * @SI5351_DISABLE_NEVER: CLKx is NEVER disabled
   */
  enum si5351_disable_state {
  	SI5351_DISABLE_DEFAULT = 0,
  	SI5351_DISABLE_LOW,
  	SI5351_DISABLE_HIGH,
  	SI5351_DISABLE_FLOATING,
  	SI5351_DISABLE_NEVER,
  };
  
  /**
   * struct si5351_clkout_config - Si5351 clock output configuration
   * @clkout: clkout number
   * @multisynth_src: multisynth source clock
   * @clkout_src: clkout source clock
   * @pll_master: if true, clkout can also change pll rate
   * @drive: output drive strength
   * @rate: initial clkout rate, or default if 0
   */
  struct si5351_clkout_config {
  	enum si5351_multisynth_src multisynth_src;
  	enum si5351_clkout_src clkout_src;
  	enum si5351_drive_strength drive;
  	enum si5351_disable_state disable_state;
  	bool pll_master;
  	unsigned long rate;
  };
  
  /**
   * struct si5351_platform_data - Platform data for the Si5351 clock driver
   * @clk_xtal: xtal input clock
   * @clk_clkin: clkin input clock
   * @pll_src: array of pll source clock setting
   * @clkout: array of clkout configuration
   */
  struct si5351_platform_data {
  	enum si5351_pll_src pll_src[2];
  	struct si5351_clkout_config clkout[8];
  };
  
  #endif