lpss.c File Reference

#include <device/mmio.h>
#include <device/pci_def.h>
#include <device/pci_ops.h>
#include <intelblocks/lpss.h>

Include dependency graph for lpss.c:

Go to the source code of this file.

Macros
#define	LPSS_CLOCK_CTL_REG   0x200
#define	LPSS_CNT_CLOCK_EN   1
#define	LPSS_CNT_CLK_UPDATE   (1 << 31)
#define	LPSS_CLOCK_DIV_N(n)   (((n) & 0x7fff) << 16)
#define	LPSS_CLOCK_DIV_M(m)   (((m) & 0x7fff) << 1)
#define	LPSS_RESET_CTL_REG   0x204
#define	LPSS_CNT_RST_RELEASE   3
#define	LPSS_DMA_RST_RELEASE   (1 << 2)
#define	PME_CTRL_STATUS   0x84
#define	POWER_STATE_MASK   3

Functions
bool	lpss_is_controller_in_reset (uintptr_t base)
void	lpss_reset_release (uintptr_t base)
void	lpss_clk_update (uintptr_t base, uint32_t clk_m_val, uint32_t clk_n_val)
void	lpss_set_power_state (pci_devfn_t devfn, enum lpss_pwr_state state)

Macro Definition Documentation

LPSS_CLOCK_CTL_REG

#define LPSS_CLOCK_CTL_REG   0x200

Definition at line 9 of file lpss.c.

LPSS_CLOCK_DIV_M

#define LPSS_CLOCK_DIV_M

(

m

)

(((m) & 0x7fff) << 1)

Definition at line 13 of file lpss.c.

LPSS_CLOCK_DIV_N

#define LPSS_CLOCK_DIV_N

(

n

)

(((n) & 0x7fff) << 16)

Definition at line 12 of file lpss.c.

LPSS_CNT_CLK_UPDATE

#define LPSS_CNT_CLK_UPDATE   (1 << 31)

Definition at line 11 of file lpss.c.

LPSS_CNT_CLOCK_EN

#define LPSS_CNT_CLOCK_EN   1

Definition at line 10 of file lpss.c.

LPSS_CNT_RST_RELEASE

#define LPSS_CNT_RST_RELEASE   3

Definition at line 26 of file lpss.c.

LPSS_DMA_RST_RELEASE

#define LPSS_DMA_RST_RELEASE   (1 << 2)

Definition at line 29 of file lpss.c.

LPSS_RESET_CTL_REG

#define LPSS_RESET_CTL_REG   0x204

Definition at line 16 of file lpss.c.

PME_CTRL_STATUS

#define PME_CTRL_STATUS   0x84

Definition at line 32 of file lpss.c.

POWER_STATE_MASK

#define POWER_STATE_MASK   3

Definition at line 34 of file lpss.c.

Function Documentation

lpss_clk_update()

void lpss_clk_update	(	uintptr_t	base,
		uint32_t	clk_m_val,
		uint32_t	clk_n_val
	)

Definition at line 55 of file lpss.c.

References addr, base, LPSS_CLOCK_CTL_REG, LPSS_CLOCK_DIV_M, LPSS_CLOCK_DIV_N, LPSS_CNT_CLK_UPDATE, LPSS_CNT_CLOCK_EN, and write32().

Referenced by uart_lpss_init().

Here is the call graph for this function:

Here is the caller graph for this function:

lpss_is_controller_in_reset()

bool lpss_is_controller_in_reset

(

uintptr_t

base

)

Definition at line 36 of file lpss.c.

References addr, base, LPSS_CNT_RST_RELEASE, LPSS_RESET_CTL_REG, read32(), and val.

Referenced by uart_is_controller_initialized().

Here is the call graph for this function:

Here is the caller graph for this function:

lpss_reset_release()

void lpss_reset_release

(

uintptr_t

base

)

Definition at line 47 of file lpss.c.

References addr, base, LPSS_CNT_RST_RELEASE, LPSS_RESET_CTL_REG, and write32().

Referenced by lpss_i2c_early_init_bus(), and uart_lpss_init().

Here is the call graph for this function:

Here is the caller graph for this function:

lpss_set_power_state()

void lpss_set_power_state	(	pci_devfn_t	devfn,
		enum lpss_pwr_state	state
	)

Definition at line 68 of file lpss.c.

References pci_s_read_config8(), pci_s_write_config8(), PME_CTRL_STATUS, and POWER_STATE_MASK.

Referenced by gspi_ctrlr_setup(), lpss_i2c_early_init_bus(), and uart_lpss_init().

Here is the call graph for this function:

Here is the caller graph for this function: