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Commit f744ad78 authored by Fenglin Wu's avatar Fenglin Wu
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input: qcom-hv-haptics: update LRA frequency detection sequence 



Update following settings in LRA frequency detection sequence according
to HW recommendation:
  1) Increase to 6 drive cycles before enabling High-Z period for auto
     resonance config.
  2) Disable adaptive drive duty function.

Change-Id: I551974603c99fcdad5d38fdef6edf15746c0033e
Signed-off-by: default avatarFenglin Wu <fenglinw@codeaurora.org>
parent f1a388a8

drivers/input/misc/qcom-hv-haptics.c

+16 −2
Original line number Diff line number Diff line
@@ -116,13 +116,16 @@ 
#define RC_CLK_CAL_COUNT_LSB_MASK		GENMASK(7, 0)



#define HAP_CFG_DRV_DUTY_CFG_REG		0x60

#define ADT_DRV_DUTY_EN_BIT			BIT(7)



#define HAP_CFG_ADT_DRV_DUTY_CFG_REG		0x61

#define HAP_CFG_ZX_WIND_CFG_REG			0x62



#define HAP_CFG_AUTORES_CFG_REG			0x63

#define AUTORES_EN_BIT				BIT(7)

#define AUTORES_EN_DLY_MASK			GENMASK(5, 2)

#define AUTORES_EN_DLY_1_CYCLE			0x2

#define AUTORES_EN_DLY(cycles)			((cycles) * 2)

#define AUTORES_EN_DLY_6_CYCLES			AUTORES_EN_DLY(6)

#define AUTORES_EN_DLY_SHIFT			2

#define AUTORES_ERR_WINDOW_MASK			GENMASK(1, 0)

#define AUTORES_ERR_WINDOW_12P5_PERCENT		0x0
@@ -4086,11 +4089,16 @@ static int haptics_detect_lra_frequency(struct haptics_chip *chip) 
	rc = haptics_masked_write(chip, chip->cfg_addr_base,

			HAP_CFG_AUTORES_CFG_REG, AUTORES_EN_BIT |

			AUTORES_EN_DLY_MASK | AUTORES_ERR_WINDOW_MASK,

			AUTORES_EN_DLY_1_CYCLE << AUTORES_EN_DLY_SHIFT

			AUTORES_EN_DLY_6_CYCLES << AUTORES_EN_DLY_SHIFT

			| AUTORES_ERR_WINDOW_50_PERCENT | AUTORES_EN_BIT);

	if (rc < 0)

		return rc;



	rc = haptics_masked_write(chip, chip->cfg_addr_base,

			HAP_CFG_DRV_DUTY_CFG_REG, ADT_DRV_DUTY_EN_BIT, 0);

	if (rc < 0)

		goto restore;



	rc = haptics_config_openloop_lra_period(chip, chip->config.t_lra_us);

	if (rc < 0)

		goto restore;
@@ -4143,6 +4151,12 @@ static int haptics_detect_lra_frequency(struct haptics_chip *chip) 


	rc = haptics_write(chip, chip->cfg_addr_base,

			HAP_CFG_AUTORES_CFG_REG, &autores_cfg, 1);

	if (rc < 0)

		return rc;



	rc = haptics_masked_write(chip, chip->cfg_addr_base,

			HAP_CFG_DRV_DUTY_CFG_REG, ADT_DRV_DUTY_EN_BIT,

			ADT_DRV_DUTY_EN_BIT);



	return rc;

}