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Commit 1b54d19f authored by Asha Magadi Venkateshamurthy's avatar Asha Magadi Venkateshamurthy
Browse files

regulator: cpr3-regulator: Add support for sdm660 



Add speed-bin 4 and 3 support for SDM660. Update temp based
adjustments config. Includes change to use scaled gate count
for aging measurements and use default step_quot during corner
switch.

Change-Id: Ie2bd2ad64915a75b7cabd31b3c2ea35b20967cc4
Signed-off-by: default avatarAsha Magadi Venkateshamurthy <amagad@codeaurora.org>
parent ae43e061

Documentation/devicetree/bindings/regulator/cpr3-regulator.txt

+9 −0
Original line number Diff line number Diff line
@@ -209,6 +209,15 @@ Platform independent properties: 
		    as the corresponding addresses are specified in

		    the qcom,cpr-panic-reg-addr-list property.



- qcom,cpr-reset-step-quot-loop-en

	Usage:      optional; only meaningful for CPR4 and CPRh controllers

	Value type: <empty>

	Definition: Boolean value which indicates that the CPR controller should

		    be configured to reset step_quot on each loop_en = 0

		    transition. This configuration allows the CPR controller to

		    first use the default step_quot and then later switch to the

		    run-time calibrated step_quot.



=================================================

Second Level Nodes - CPR Threads for a Controller

=================================================

drivers/regulator/cpr3-regulator.c

+28 −4
Original line number Diff line number Diff line 
/*

 * Copyright (c) 2015-2019, The Linux Foundation. All rights reserved.

 * Copyright (c) 2015-2020, The Linux Foundation. All rights reserved.

 *

 * This program is free software; you can redistribute it and/or modify

 * it under the terms of the GNU General Public License version 2 and
@@ -174,6 +174,7 @@ 
#define CPR4_CPR_TIMER_CLAMP_THREAD_AGGREGATION_EN	BIT(27)



#define CPR4_REG_MISC				0x700

#define CPR4_MISC_RESET_STEP_QUOT_LOOP_EN	BIT(2)

#define CPR4_MISC_MARGIN_TABLE_ROW_SELECT_MASK	GENMASK(23, 20)

#define CPR4_MISC_MARGIN_TABLE_ROW_SELECT_SHIFT	20

#define CPR4_MISC_TEMP_SENSOR_ID_START_MASK	GENMASK(27, 24)
@@ -316,6 +317,12 @@ 
 */

#define CPRH_DELTA_QUOT_STEP_FACTOR 4



/*

 * The multiplier applied to scaling factor value used to derive GCNT

 * for aging measurements.

 */

#define CPR3_AGING_GCNT_SCALING_UNITY	1000



static DEFINE_MUTEX(cpr3_controller_list_mutex);

static LIST_HEAD(cpr3_controller_list);

static struct dentry *cpr3_debugfs_base;
@@ -698,6 +705,11 @@ static int cpr3_regulator_init_cpr4(struct cpr3_controller *ctrl) 
	int thread_id = 0;

	u64 temp;



	if (ctrl->reset_step_quot_loop_en)

		cpr3_masked_write(ctrl, CPR4_REG_MISC,

				CPR4_MISC_RESET_STEP_QUOT_LOOP_EN,

				CPR4_MISC_RESET_STEP_QUOT_LOOP_EN);



	if (ctrl->supports_hw_closed_loop) {

		if (ctrl->saw_use_unit_mV)

			pmic_step_size = ctrl->step_volt / 1000;
@@ -1005,7 +1017,8 @@ static int cpr3_controller_program_sdelta(struct cpr3_controller *ctrl) 
		max_core_count << CPR4_MARGIN_ADJ_CTL_MAX_NUM_CORES_SHIFT

		| ((sdelta->allow_core_count_adj || sdelta->allow_boost)

			? CPR4_MARGIN_ADJ_CTL_CORE_ADJ_EN : 0)

		| ((sdelta->allow_temp_adj && ctrl->supports_hw_closed_loop)

		| ((sdelta->allow_temp_adj && ctrl->supports_hw_closed_loop

			&& sdelta->allow_core_count_adj)

			? CPR4_MARGIN_ADJ_CTL_TEMP_ADJ_EN : 0)

		| (((ctrl->use_hw_closed_loop && !sdelta->allow_boost)

		    || !ctrl->supports_hw_closed_loop)
@@ -1310,6 +1323,11 @@ static int cpr3_regulator_init_cprh(struct cpr3_controller *ctrl) 
		return rc;

	}



	if (ctrl->reset_step_quot_loop_en)

		cpr3_masked_write(ctrl, CPR4_REG_MISC,

				CPR4_MISC_RESET_STEP_QUOT_LOOP_EN,

				CPR4_MISC_RESET_STEP_QUOT_LOOP_EN);



	if (ctrl->saw_use_unit_mV)

		pmic_step_size = ctrl->step_volt / 1000;

	cpr3_masked_write(ctrl, CPR4_REG_MARGIN_ADJ_CTL,
@@ -3098,7 +3116,8 @@ static int _cpr3_regulator_update_ctrl_state(struct cpr3_controller *ctrl) 
	struct cpr4_sdelta *sdelta;

	bool valid = false;

	bool thread_valid;

	int i, j, rc, new_volt, vdd_volt, dynamic_floor_volt, last_corner_volt;

	int i, j, rc;

	int new_volt, vdd_volt, dynamic_floor_volt, last_corner_volt = 0;

	u32 reg_last_measurement = 0, sdelta_size;

	int *sdelta_table, *boost_table;
@@ -3551,7 +3570,12 @@ static int cpr3_regulator_measure_aging(struct cpr3_controller *ctrl, 
	gcnt0_restore = cpr3_read(ctrl, CPR3_REG_GCNT(0));

	gcnt1_restore = cpr3_read(ctrl, CPR3_REG_GCNT(1));

	gcnt_ref = cpr3_regulator_get_gcnt(ctrl);

	gcnt = gcnt_ref * 3 / 2;



	gcnt = gcnt_ref;

	if (ctrl->aging_gcnt_scaling_factor)

		gcnt = gcnt_ref * ctrl->aging_gcnt_scaling_factor

				/ CPR3_AGING_GCNT_SCALING_UNITY;



	cpr3_write(ctrl, CPR3_REG_GCNT(0), gcnt);

	cpr3_write(ctrl, CPR3_REG_GCNT(1), gcnt);

drivers/regulator/cpr3-regulator.h

+16 −1
Original line number Diff line number Diff line 
/*

 * Copyright (c) 2015-2019, The Linux Foundation. All rights reserved.

 * Copyright (c) 2015-2020, The Linux Foundation. All rights reserved.

 *

 * This program is free software; you can redistribute it and/or modify

 * it under the terms of the GNU General Public License version 2 and
@@ -702,6 +702,13 @@ struct cpr3_panic_regs_info { 
 * @aging_possible_val:	Optional value that the masked aging_possible_reg

 *			register must have in order for a CPR aging measurement

 *			to be possible.

 * @aging_gcnt_scaling_factor: The scaling factor used to derive the gate count

 *			used for aging measurements. This value is divided by

 *			1000 when used as shown in the below equation:

 *			      Aging_GCNT = GCNT_REF * scaling_factor / 1000.

 *			For example, a value of 1500 specifies that the gate

 *			count (GCNT) used for aging measurement should be 1.5

 *			times of reference gate count (GCNT_REF).

 * @step_quot_fixed:	Fixed step quotient value used for target quotient

 *			adjustment if use_dynamic_step_quot is not set.

 *			This parameter is only relevant for CPR4 controllers
@@ -735,6 +742,12 @@ struct cpr3_panic_regs_info { 
 * @panic_notifier:	Notifier block registered to global panic notifier list.

 * @support_ldo300_vreg: Boolean value which indicates that this CPR controller

 *			manages an underlying LDO regulator of type LDO300.

 * @reset_step_quot_loop_en: Boolean value which indicates that this CPR

 *			controller should be configured to reset step_quot on

 *			each loop_en = 0 transition. This configuration allows

 *			the CPR controller to first use the default step_quot

 *			and then later switch to the run-time calibrated

 *			step_quot.

 *

 * This structure contains both configuration and runtime state data.  The

 * elements cpr_allowed_sw, use_hw_closed_loop, aggr_corner, cpr_enabled,
@@ -821,6 +834,7 @@ struct cpr3_controller { 
	int			aging_sensor_count;

	u32			aging_possible_mask;

	u32			aging_possible_val;

	u32			aging_gcnt_scaling_factor;



	u32			step_quot_fixed;

	u32			initial_temp_band;
@@ -836,6 +850,7 @@ struct cpr3_controller { 
	struct cpr3_panic_regs_info *panic_regs_info;

	struct notifier_block	panic_notifier;

	bool			support_ldo300_vreg;

	bool			reset_step_quot_loop_en;

};



/* Used for rounding voltages to the closest physically available set point. */

drivers/regulator/cpr3-util.c

+8 −0
Original line number Diff line number Diff line
@@ -1220,6 +1220,14 @@ int cpr3_parse_common_ctrl_data(struct cpr3_controller *ctrl) 
		return -ENODEV;

	}



	/*

	 * Reset step_quot to default on each loop_en = 0 transition is

	 * optional.

	 */

	ctrl->reset_step_quot_loop_en

		= of_property_read_bool(ctrl->dev->of_node,

					"qcom,cpr-reset-step-quot-loop-en");



	/*

	 * Regulator device handles are not necessary for CPRh controllers

	 * since communication with the regulators is completely managed

drivers/regulator/cprh-kbss-regulator.c

+15 −3
Original line number Diff line number Diff line 
/*

 * Copyright (c) 2015-2019, The Linux Foundation. All rights reserved.

 * Copyright (c) 2015-2020, The Linux Foundation. All rights reserved.

 *

 * This program is free software; you can redistribute it and/or modify

 * it under the terms of the GNU General Public License version 2 and
@@ -76,9 +76,10 @@ struct cprh_kbss_fuses { 
 * Fuse combos 8 - 15 map to CPR fusing revision 0 - 7 with speed bin fuse = 1.

 * Fuse combos 16 - 23 map to CPR fusing revision 0 - 7 with speed bin fuse = 2.

 * Fuse combos 24 - 31 map to CPR fusing revision 0 - 7 with speed bin fuse = 3.

 * Fuse combos 32 - 39 map to CPR fusing revision 0 - 7 with speed bin fuse = 4.

 */

#define CPRH_MSM8998_KBSS_FUSE_COMBO_COUNT	32

#define CPRH_SDM660_KBSS_FUSE_COMBO_COUNT	16

#define CPRH_SDM660_KBSS_FUSE_COMBO_COUNT	40



/*

 * Constants which define the name of each fuse corner.
@@ -808,6 +809,12 @@ static int cprh_kbss_calculate_open_loop_voltages(struct cpr3_regulator *vreg) 
			CPRH_KBSS_FUSE_STEP_VOLT, fuse->init_voltage[i],

			CPRH_KBSS_VOLTAGE_FUSE_SIZE);



		/* SDM660 speed bin #3 does not support TURBO_L1/L2 */

		if (soc_revision == SDM660_SOC_ID && vreg->speed_bin_fuse == 3

		    && (id == CPRH_KBSS_PERFORMANCE_CLUSTER_ID)

		    && (i == CPRH_SDM660_PERF_KBSS_FUSE_CORNER_TURBO_L2))

			continue;



		/* Log fused open-loop voltage values for debugging purposes. */

		cpr3_info(vreg, "fused %8s: open-loop=%7d uV\n", corner_name[i],

			  fuse_volt[i]);
@@ -1354,6 +1361,11 @@ static int cprh_kbss_calculate_target_quotients(struct cpr3_regulator *vreg) 
				CPRH_SDM660_PERF_KBSS_FUSE_CORNER_SVS;

			highest_fuse_corner =

				CPRH_SDM660_PERF_KBSS_FUSE_CORNER_TURBO_L2;



			/* speed-bin 3 does not have Turbo_L2 fuse */

			if (vreg->speed_bin_fuse == 3)

				highest_fuse_corner =

					CPRH_SDM660_PERF_KBSS_FUSE_CORNER_TURBO;

		}

		break;

	case MSM8998_V1_SOC_ID:
@@ -1699,7 +1711,7 @@ static int cprh_kbss_init_regulator(struct cpr3_regulator *vreg) 
static int cprh_kbss_init_aging(struct cpr3_controller *ctrl)

{

	struct cprh_kbss_fuses *fuse = NULL;

	struct cpr3_regulator *vreg;

	struct cpr3_regulator *vreg = NULL;

	u32 aging_ro_scale;

	int i, j, rc = 0;