185 lines
5.5 KiB
C
185 lines
5.5 KiB
C
/*
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* PMIC management for epaper power control HAL
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*
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* Copyright (C) 2009 Dimitar Dimitrov, MM Solutions
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*
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* This file is subject to the terms and conditions of the GNU General Public
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* License. See the file COPYING in the main directory of this archive for
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* more details.
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*
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*/
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#ifndef PMIC_H
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#define PMIC_H
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#include <linux/kernel.h>
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#include <linux/workqueue.h>
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#include <linux/workqueue.h>
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#include <linux/regulator/consumer.h>
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#include <linux/i2c.h>
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struct pmic_sess;
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#define PMIC_DEFAULT_DWELL_TIME_MS 1111
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#define PMIC_DEFAULT_VCOMOFF_TIME_MS 20
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#define PMIC_DEFAULT_V3P3OFF_TIME_MS -1
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#if defined(FB_OMAP3EP_PAPYRUS_PM_VZERO)
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#define PAPYRUS_STANDBY_DWELL_TIME 4 /*sec*/
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#else
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#define PAPYRUS_STANDBY_DWELL_TIME 0
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#endif
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#define SEQ_VDD(index) ((index % 4) << 6)
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#define SEQ_VPOS(index) ((index % 4) << 4)
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#define SEQ_VEE(index) ((index % 4) << 2)
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#define SEQ_VNEG(index) ((index % 4) << 0)
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/* power up seq delay time */
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#define UDLY_3ms(index) (0x00 << ((index%4) * 2))
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#define UDLY_6ms(index) (0x01 << ((index%4) * 2))
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#define UDLY_9ms(index) (0x10 << ((index%4) * 2))
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#define UDLY_12ms(index) (0x11 << ((index%4) * 2))
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/* power down seq delay time */
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#define DDLY_6ms(index) (0x00 << ((index%4) * 2))
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#define DDLY_12ms(index) (0x01 << ((index%4) * 2))
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#define DDLY_24ms(index) (0x10 << ((index%4) * 2))
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#define DDLY_48ms(index) (0x11 << ((index%4) * 2))
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#define NUMBER_PMIC_REGS 10
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struct pmic_driver {
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const char *id;
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int vcom_min;
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int vcom_max;
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int vcom_step;
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int (*hw_read_temperature)(struct pmic_sess *sess, int *t);
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bool (*hw_power_ack)(struct pmic_sess *sess);
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void (*hw_power_req)(struct pmic_sess *sess, bool up);
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int (*set_enable)(struct pmic_sess *sess, int enable);
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int (*set_vcom_voltage)(struct pmic_sess *sess, int vcom_mv);
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int (*set_vcom1)(struct pmic_sess *sess, uint8_t vcom1);
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int (*set_vcom2)(struct pmic_sess *sess, uint8_t vcom2);
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int (*set_vadj)(struct pmic_sess *sess, uint8_t vadj);
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int (*set_int_en1)(struct pmic_sess *sess, uint8_t int_en1);
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int (*set_int_en2)(struct pmic_sess *sess, uint8_t int_en2);
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int (*set_upseq0)(struct pmic_sess *sess, uint8_t upseq0);
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int (*set_upseq1)(struct pmic_sess *sess, uint8_t upseq1);
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int (*set_dwnseq0)(struct pmic_sess *sess, uint8_t dwnseq0);
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int (*set_dwnseq1)(struct pmic_sess *sess, uint8_t dwnseq1);
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int (*set_tmst1)(struct pmic_sess *sess, uint8_t tmst1);
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int (*set_tmst2)(struct pmic_sess *sess, uint8_t tmst2);
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int (*set_vp_adjust)(struct pmic_sess *sess, uint8_t vp_adjust);
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int (*set_vn_adjust)(struct pmic_sess *sess, uint8_t vn_adjust);
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int (*set_vcom_adjust)(struct pmic_sess *sess, uint8_t vcom_adjust);
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int (*set_pwr_seq0)(struct pmic_sess *sess, uint8_t pwr_seq0);
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int (*set_pwr_seq1)(struct pmic_sess *sess, uint8_t pwr_seq1);
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int (*set_pwr_seq2)(struct pmic_sess *sess, uint8_t pwr_seq2);
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int (*set_tmst_config)(struct pmic_sess *sess, uint8_t tmst_config);
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int (*set_tmst_os)(struct pmic_sess *sess, uint8_t tmst_os);
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int (*set_tmst_hyst)(struct pmic_sess *sess, uint8_t tmst_hyst);
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int (*hw_vcom_switch)(struct pmic_sess *sess, bool state);
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int (*hw_set_dvcom)(struct pmic_sess *sess, int state);
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// int (*hw_init)(struct pmic_sess *pmsess, struct pmic_config *config, struct i2c_client *client);
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void (*hw_cleanup)(struct pmic_sess *sess);
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bool (*hw_standby_dwell_time_ready)(struct pmic_sess *sess);
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int (*hw_pm_sleep)(struct pmic_sess *sess);
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int (*hw_pm_resume)(struct pmic_sess *sess);
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};
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typedef enum {
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MASTER_PMIC_ID = 0,
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SLAVE_PMIC_ID = 1,
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MAX_PMIC_NUM = 2
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} PMIC_ID;
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struct pmic_sess {
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PMIC_ID id;
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bool powered;
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struct delayed_work powerdown_work;
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unsigned int dwell_time_ms;
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struct delayed_work vcomoff_work;
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unsigned int vcomoff_time_ms;
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int v3p3off_time_ms;
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const struct pmic_driver *drv;
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void *drvpar;
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int temp_man_offset;
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int revision;
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int is_inited;
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};
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struct pmic_config {
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u32 used_flag;
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char name[64];
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u32 twi_id;
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u32 twi_addr;
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struct device *dev;
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int wake_up_pin;
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int vcom_ctl_pin;
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int power_up_pin;
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int power_good_pin;
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int int_pin;
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char pmic_power_name[64];
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};
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struct pmic_mgr {
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struct pmic_config config[MAX_PMIC_NUM];
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struct pmic_sess sess[MAX_PMIC_NUM];
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};
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extern int pmic_probe(struct pmic_sess **sess, const char *id,
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unsigned int dwell_time_ms,
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unsigned int vcomoff_time_ms,
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int v3p3_time_ms);
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extern void pmic_remove(struct pmic_sess **sess);
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extern int pmic_set_registers_papyrus_1(struct pmic_sess *sess, uint8_t *vals);
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extern int pmic_set_registers_papyrus_2(struct pmic_sess *sess, uint8_t *vals);
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/*
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* Set VCOM voltage, in millivolts.
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* NB! Change will take effect with the next pmic power up!
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*/
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extern int pmic_set_vcom_voltage(struct pmic_sess *sess, int vcom_mv);
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/*Runtame Change VCOM state */
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extern int pmic_set_dvcom(struct pmic_sess *sess, int state);
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/* Request asynchronous power up. */
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extern int pmic_req_powerup(struct pmic_sess *sess);
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/* Ensure that power is OK. Called after a pmic_req_powerup(). */
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extern int pmic_sync_powerup(struct pmic_sess *sess);
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/* Get pmic temperature sensor measurement. */
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extern int pmic_get_temperature(struct pmic_sess *sess, int *t);
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/*
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* Asynchronously release the power up requirement. Power may go down
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* up to a few seconds after this call in order to avoid power up/down
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* cycles with frequent screen updates.
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*/
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extern void pmic_release_powerup_req(struct pmic_sess *sess);
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/* Get that enough delay between standby and sleep*/
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extern bool pmic_standby_dwell_time_ready(struct pmic_sess *sess);
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extern void pmic_pm_sleep(struct pmic_sess *sess);
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extern void pmic_pm_resume(struct pmic_sess *sess);
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#endif /* PMIC_H */
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