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Diffstat (limited to 'arch/arm/plat-mxc/include/mach/dvfs_dptc_struct.h')
| -rw-r--r-- | arch/arm/plat-mxc/include/mach/dvfs_dptc_struct.h | 169 |
1 files changed, 169 insertions, 0 deletions
diff --git a/arch/arm/plat-mxc/include/mach/dvfs_dptc_struct.h b/arch/arm/plat-mxc/include/mach/dvfs_dptc_struct.h new file mode 100644 index 000000000000..d24549ab97fe --- /dev/null +++ b/arch/arm/plat-mxc/include/mach/dvfs_dptc_struct.h @@ -0,0 +1,169 @@ +/* + * Copyright 2004-2010 Freescale Semiconductor, Inc. All Rights Reserved. + */ + +/* + * The code contained herein is licensed under the GNU General Public + * License. You may obtain a copy of the GNU General Public License + * Version 2 or later at the following locations: + * + * http://www.opensource.org/licenses/gpl-license.html + * http://www.gnu.org/copyleft/gpl.html + */ + +/*! + * @file arch-mxc/dvfs_dptc_struct.h + * + * @brief MXC dvfs & dptc structure definitions file. + * + * @ingroup PM_MX27 PM_MX31 PM_MXC91321 PM_MXC91311 + */ +#ifndef __ASM_ARCH_MXC_DVFS_DPTC_STRUCT_H__ +#define __ASM_ARCH_MXC_DVFS_DPTC_STRUCT_H__ + +#include <linux/semaphore.h> +#include <mach/pm_api.h> + +/*! + * Number of entries in the DPTC log buffer + */ +#define LOG_ENTRIES 1024 + +/*! + * Log buffer Structure.\n + * This structure records the DPTC changes. \n + * This structure can be read by the user using the proc file system DPTC read entry. + */ +typedef struct { + /*! + * Index to the head of the log buffer + */ + int head; + + /*! + * Index to the tail of the log buffer + */ + int tail; + + /*! + * Mutex to allow access to the log buffer + */ + struct semaphore mutex; + + /*! + * Array of log buffer entries + */ + dptc_log_entry_s entries[LOG_ENTRIES]; +} dptc_log_s; + +/*! + * DPTC driver data structure.\n + * Holds all driver parameters and data structures. + */ +typedef struct { + /*! + * This variable holds the current frequency index + */ + int current_freq_index; + + /*! + * Boolean variable, if TRUE the DPTC module is enabled + * if FALSE the DPTC module is disabled + */ + int dptc_is_active; + + /*! + * Boolean variable, if TRUE turbo mode enable + * if FALSE turbo mode disabled + */ + int turbo_mode_active; + + /*! + * Boolean variable, if TRUE the DVFS module is enabled + * if FALSE the DPTC module is disabled + */ + int dvfs_is_active; + + /*! + * Boolean variable, if TRUE the DPTC module is suspended + */ + int suspended; + + unsigned char rc_state; + + /*! + * Pointer to the DVFS & DPTC translation table + */ + dvfs_dptc_tables_s *dvfs_dptc_tables_ptr; + + /*! + * The DPTC log buffer + */ + dptc_log_s dptc_log_buffer; + + /*! + * The DVFS log buffer + */ + unsigned char *dvfs_log_buffer; + + /*! + * The DVFS log buffer physical address (for SDMA) + */ + dma_addr_t dvfs_log_buffer_phys; + +#ifdef CONFIG_MXC_DVFS_SDMA + /*! + * SDMA channel number + */ + int sdma_channel; + + /*! + * This holds the previous working point + */ + int prev_wp; + + /*! + * Wait entry for predictive DVFS + */ + wait_queue_head_t dvfs_pred_wait; +#endif + + /*! + * This holds the current DVFS mode + */ + unsigned int dvfs_mode; + + /*! + * Log buffer read pointer + */ + unsigned char *read_ptr; + + /* + * Number of characters in log buffer + */ + int chars_in_buffer; +} dvfs_dptc_params_s; + +/*! + * This struct contains the array with values of supported frequencies in Hz + */ +typedef struct { + /* + * Number of supported states + */ + unsigned int num_of_states; + /*! + * Array of frequencies + */ + unsigned int *freqs; +} dvfs_states_table; + +/* + * if not defined define TREU and FALSE values. + */ +#ifndef TRUE +#define TRUE 1 +#define FALSE 0 +#endif /* TRUE */ + +#endif |