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path: root/drivers/regulator/ltc3589.c
blob: 853a06ad86d6c429cc52683b88566712ae431ea2 (plain) 
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-rw-r--r--drivers/net/ethernet/qlogic/qed/qed_cxt.c2
-rw-r--r--drivers/net/ethernet/qlogic/qed/qed_dev.c6
-rw-r--r--drivers/net/ethernet/qlogic/qed/qed_hw.c2
-rw-r--r--drivers/net/ethernet/qlogic/qed/qed_int.c8
-rw-r--r--drivers/net/ethernet/qlogic/qed/qed_mcp.c6
-rw-r--r--drivers/net/ethernet/qlogic/qed/qed_spq.c6
6 files changed, 15 insertions, 15 deletions
diff --git a/drivers/net/ethernet/qlogic/qed/qed_cxt.c b/drivers/net/ethernet/qlogic/qed/qed_cxt.c
index d3f7a0215e7e..fc767c07a264 100644
--- a/drivers/net/ethernet/qlogic/qed/qed_cxt.c
+++ b/drivers/net/ethernet/qlogic/qed/qed_cxt.c
@@ -448,7 +448,7 @@ int qed_cxt_mngr_alloc(struct qed_hwfn *p_hwfn)
struct qed_cxt_mngr *p_mngr;
u32 i;
- p_mngr = kzalloc(sizeof(*p_mngr), GFP_ATOMIC);
+ p_mngr = kzalloc(sizeof(*p_mngr), GFP_KERNEL);
if (!p_mngr) {
DP_NOTICE(p_hwfn, "Failed to allocate `struct qed_cxt_mngr'\n");
return -ENOMEM;
diff --git a/drivers/net/ethernet/qlogic/qed/qed_dev.c b/drivers/net/ethernet/qlogic/qed/qed_dev.c
index bc17ed2c9cac..acfe7be49a58 100644
--- a/drivers/net/ethernet/qlogic/qed/qed_dev.c
+++ b/drivers/net/ethernet/qlogic/qed/qed_dev.c
@@ -134,17 +134,17 @@ static int qed_init_qm_info(struct qed_hwfn *p_hwfn)
/* PQs will be arranged as follows: First per-TC PQ then pure-LB quete.
*/
qm_info->qm_pq_params = kzalloc(sizeof(*qm_info->qm_pq_params) *
- num_pqs, GFP_ATOMIC);
+ num_pqs, GFP_KERNEL);
if (!qm_info->qm_pq_params)
goto alloc_err;
qm_info->qm_vport_params = kzalloc(sizeof(*qm_info->qm_vport_params) *
- num_vports, GFP_ATOMIC);
+ num_vports, GFP_KERNEL);
if (!qm_info->qm_vport_params)
goto alloc_err;
qm_info->qm_port_params = kzalloc(sizeof(*qm_info->qm_port_params) *
- MAX_NUM_PORTS, GFP_ATOMIC);
+ MAX_NUM_PORTS, GFP_KERNEL);
if (!qm_info->qm_port_params)
goto alloc_err;
diff --git a/drivers/net/ethernet/qlogic/qed/qed_hw.c b/drivers/net/ethernet/qlogic/qed/qed_hw.c
index ffa99273b353..a95a3e4b3101 100644
--- a/drivers/net/ethernet/qlogic/qed/qed_hw.c
+++ b/drivers/net/ethernet/qlogic/qed/qed_hw.c
@@ -44,7 +44,7 @@ struct qed_ptt_pool {
int qed_ptt_pool_alloc(struct qed_hwfn *p_hwfn)
{
struct qed_ptt_pool *p_pool = kmalloc(sizeof(*p_pool),
- GFP_ATOMIC);
+ GFP_KERNEL);
int i;
if (!p_pool)
diff --git a/drivers/net/ethernet/qlogic/qed/qed_int.c b/drivers/net/ethernet/qlogic/qed/qed_int.c
index 9cc9d62c1fec..90ba1d71e67a 100644
--- a/drivers/net/ethernet/qlogic/qed/qed_int.c
+++ b/drivers/net/ethernet/qlogic/qed/qed_int.c
@@ -399,7 +399,7 @@ static int qed_int_sb_attn_alloc(struct qed_hwfn *p_hwfn,
dma_addr_t p_phys = 0;
/* SB struct */
- p_sb = kmalloc(sizeof(*p_sb), GFP_ATOMIC);
+ p_sb = kmalloc(sizeof(*p_sb), GFP_KERNEL);
if (!p_sb) {
DP_NOTICE(cdev, "Failed to allocate `struct qed_sb_attn_info'\n");
return -ENOMEM;
@@ -666,7 +666,7 @@ static int qed_int_sp_sb_alloc(struct qed_hwfn *p_hwfn,
void *p_virt;
/* SB struct */
- p_sb = kmalloc(sizeof(*p_sb), GFP_ATOMIC);
+ p_sb = kmalloc(sizeof(*p_sb), GFP_KERNEL);
if (!p_sb) {
DP_NOTICE(p_hwfn, "Failed to allocate `struct qed_sb_info'\n");
return -ENOMEM;
@@ -946,7 +946,7 @@ int qed_int_igu_read_cam(struct qed_hwfn *p_hwfn,
u16 sb_id;
u16 prev_sb_id = 0xFF;
- p_hwfn->hw_info.p_igu_info = kzalloc(sizeof(*p_igu_info), GFP_ATOMIC);
+ p_hwfn->hw_info.p_igu_info = kzalloc(sizeof(*p_igu_info), GFP_KERNEL);
if (!p_hwfn->hw_info.p_igu_info)
return -ENOMEM;
@@ -1072,7 +1072,7 @@ static void qed_int_sp_dpc_setup(struct qed_hwfn *p_hwfn)
static int qed_int_sp_dpc_alloc(struct qed_hwfn *p_hwfn)
{
- p_hwfn->sp_dpc = kmalloc(sizeof(*p_hwfn->sp_dpc), GFP_ATOMIC);
+ p_hwfn->sp_dpc = kmalloc(sizeof(*p_hwfn->sp_dpc), GFP_KERNEL);
if (!p_hwfn->sp_dpc)
return -ENOMEM;
diff --git a/drivers/net/ethernet/qlogic/qed/qed_mcp.c b/drivers/net/ethernet/qlogic/qed/qed_mcp.c
index 1457e30faccf..f23ce734ab63 100644
--- a/drivers/net/ethernet/qlogic/qed/qed_mcp.c
+++ b/drivers/net/ethernet/qlogic/qed/qed_mcp.c
@@ -147,7 +147,7 @@ int qed_mcp_cmd_init(struct qed_hwfn *p_hwfn,
u32 size;
/* Allocate mcp_info structure */
- p_hwfn->mcp_info = kzalloc(sizeof(*p_hwfn->mcp_info), GFP_ATOMIC);
+ p_hwfn->mcp_info = kzalloc(sizeof(*p_hwfn->mcp_info), GFP_KERNEL);
if (!p_hwfn->mcp_info)
goto err;
p_info = p_hwfn->mcp_info;
@@ -161,10 +161,10 @@ int qed_mcp_cmd_init(struct qed_hwfn *p_hwfn,
}
size = MFW_DRV_MSG_MAX_DWORDS(p_info->mfw_mb_length) * sizeof(u32);
- p_info->mfw_mb_cur = kzalloc(size, GFP_ATOMIC);
+ p_info->mfw_mb_cur = kzalloc(size, GFP_KERNEL);
p_info->mfw_mb_shadow =
kzalloc(sizeof(u32) * MFW_DRV_MSG_MAX_DWORDS(
- p_info->mfw_mb_length), GFP_ATOMIC);
+ p_info->mfw_mb_length), GFP_KERNEL);
if (!p_info->mfw_mb_shadow || !p_info->mfw_mb_addr)
goto err;
diff --git a/drivers/net/ethernet/qlogic/qed/qed_spq.c b/drivers/net/ethernet/qlogic/qed/qed_spq.c
index 3dd548ab8df1..f6c6c21601d7 100644
--- a/drivers/net/ethernet/qlogic/qed/qed_spq.c
+++ b/drivers/net/ethernet/qlogic/qed/qed_spq.c
@@ -327,7 +327,7 @@ struct qed_eq *qed_eq_alloc(struct qed_hwfn *p_hwfn,
struct qed_eq *p_eq;
/* Allocate EQ struct */
- p_eq = kzalloc(sizeof(*p_eq), GFP_ATOMIC);
+ p_eq = kzalloc(sizeof(*p_eq), GFP_KERNEL);
if (!p_eq) {
DP_NOTICE(p_hwfn, "Failed to allocate `struct qed_eq'\n");
return NULL;
@@ -457,7 +457,7 @@ int qed_spq_alloc(struct qed_hwfn *p_hwfn)
/* SPQ struct */
p_spq =
- kzalloc(sizeof(struct qed_spq), GFP_ATOMIC);
+ kzalloc(sizeof(struct qed_spq), GFP_KERNEL);
if (!p_spq) {
DP_NOTICE(p_hwfn, "Failed to allocate `struct qed_spq'\n");
return -ENOMEM;
@@ -853,7 +853,7 @@ struct qed_consq *qed_consq_alloc(struct qed_hwfn *p_hwfn)
struct qed_consq *p_consq;
/* Allocate ConsQ struct */
- p_consq = kzalloc(sizeof(*p_consq), GFP_ATOMIC);
+ p_consq = kzalloc(sizeof(*p_consq), GFP_KERNEL);
if (!p_consq) {
DP_NOTICE(p_hwfn, "Failed to allocate `struct qed_consq'\n");
return NULL;
generated by cgit v1.2.3 (git 2.25.1) at 2024-09-03 07:05:26 +0000
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/*
 * Linear Technology LTC3589,LTC3589-1 regulator support
 *
 * Copyright (c) 2014 Philipp Zabel <p.zabel@pengutronix.de>, Pengutronix
 *
 * See file CREDITS for list of people who contributed to this
 * project.
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License version 2
 * as published by the Free Software Foundation.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 */
#include <linux/i2c.h>
#include <linux/init.h>
#include <linux/interrupt.h>
#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/of.h>
#include <linux/of_device.h>
#include <linux/regmap.h>
#include <linux/regulator/driver.h>
#include <linux/regulator/of_regulator.h>

#define DRIVER_NAME		"ltc3589"

#define LTC3589_IRQSTAT		0x02
#define LTC3589_SCR1		0x07
#define LTC3589_OVEN		0x10
#define LTC3589_SCR2		0x12
#define LTC3589_PGSTAT		0x13
#define LTC3589_VCCR		0x20
#define LTC3589_CLIRQ		0x21
#define LTC3589_B1DTV1		0x23
#define LTC3589_B1DTV2		0x24
#define LTC3589_VRRCR		0x25
#define LTC3589_B2DTV1		0x26
#define LTC3589_B2DTV2		0x27
#define LTC3589_B3DTV1		0x29
#define LTC3589_B3DTV2		0x2a
#define LTC3589_L2DTV1		0x32
#define LTC3589_L2DTV2		0x33

#define LTC3589_IRQSTAT_PGOOD_TIMEOUT	BIT(3)
#define LTC3589_IRQSTAT_UNDERVOLT_WARN	BIT(4)
#define LTC3589_IRQSTAT_UNDERVOLT_FAULT	BIT(5)
#define LTC3589_IRQSTAT_THERMAL_WARN	BIT(6)
#define LTC3589_IRQSTAT_THERMAL_FAULT	BIT(7)

#define LTC3589_OVEN_SW1		BIT(0)
#define LTC3589_OVEN_SW2		BIT(1)
#define LTC3589_OVEN_SW3		BIT(2)
#define LTC3589_OVEN_BB_OUT		BIT(3)
#define LTC3589_OVEN_LDO2		BIT(4)
#define LTC3589_OVEN_LDO3		BIT(5)
#define LTC3589_OVEN_LDO4		BIT(6)
#define LTC3589_OVEN_SW_CTRL		BIT(7)

#define LTC3589_VCCR_SW1_GO		BIT(0)
#define LTC3589_VCCR_SW2_GO		BIT(2)
#define LTC3589_VCCR_SW3_GO		BIT(4)
#define LTC3589_VCCR_LDO2_GO		BIT(6)

enum ltc3589_variant {
	LTC3589,
	LTC3589_1,
	LTC3589_2,
};

enum ltc3589_reg {
	LTC3589_SW1,
	LTC3589_SW2,
	LTC3589_SW3,
	LTC3589_BB_OUT,
	LTC3589_LDO1,
	LTC3589_LDO2,
	LTC3589_LDO3,
	LTC3589_LDO4,
	LTC3589_NUM_REGULATORS,
};

struct ltc3589_regulator {
	struct regulator_desc desc;

	/* External feedback voltage divider */
	unsigned int r1;
	unsigned int r2;
};

struct ltc3589 {
	struct regmap *regmap;
	struct device *dev;
	enum ltc3589_variant variant;
	struct ltc3589_regulator regulator_descs[LTC3589_NUM_REGULATORS];
	struct regulator_dev *regulators[LTC3589_NUM_REGULATORS];
};

static const int ltc3589_ldo4[] = {
	2800000, 2500000, 1800000, 3300000,
};

static const int ltc3589_12_ldo4[] = {
	1200000, 1800000, 2500000, 3200000,
};

static int ltc3589_set_ramp_delay(struct regulator_dev *rdev, int ramp_delay)
{
	struct ltc3589 *ltc3589 = rdev_get_drvdata(rdev);
	int sel, shift;

	if (unlikely(ramp_delay <= 0))
		return -EINVAL;

	/* VRRCR slew rate offsets are the same as VCCR go bit offsets */
	shift = ffs(rdev->desc->apply_bit) - 1;

	/* The slew rate can be set to 0.88, 1.75, 3.5, or 7 mV/uS */
	for (sel = 0; sel < 4; sel++) {
		if ((880 << sel) >= ramp_delay) {
			return regmap_update_bits(ltc3589->regmap,
						  LTC3589_VRRCR,
						  0x3 << shift, sel << shift);
		}
	}
	return -EINVAL;
}

static int ltc3589_set_suspend_voltage(struct regulator_dev *rdev, int uV)
{
	struct ltc3589 *ltc3589 = rdev_get_drvdata(rdev);
	int sel;

	sel = regulator_map_voltage_linear(rdev, uV, uV);
	if (sel < 0)
		return sel;

	/* DTV2 register follows right after the corresponding DTV1 register */
	return regmap_update_bits(ltc3589->regmap, rdev->desc->vsel_reg + 1,
				  rdev->desc->vsel_mask, sel);
}

static int ltc3589_set_suspend_mode(struct regulator_dev *rdev,
				    unsigned int mode)
{
	struct ltc3589 *ltc3589 = rdev_get_drvdata(rdev);
	int mask, bit = 0;

	/* VCCR reference selects are right next to the VCCR go bits */
	mask = rdev->desc->apply_bit << 1;

	if (mode == REGULATOR_MODE_STANDBY)
		bit = mask;	/* Select DTV2 */

	mask |= rdev->desc->apply_bit;
	bit |= rdev->desc->apply_bit;
	return regmap_update_bits(ltc3589->regmap, LTC3589_VCCR, mask, bit);
}

/* SW1, SW2, SW3, LDO2 */
static const struct regulator_ops ltc3589_linear_regulator_ops = {
	.enable = regulator_enable_regmap,
	.disable = regulator_disable_regmap,
	.is_enabled = regulator_is_enabled_regmap,
	.list_voltage = regulator_list_voltage_linear,
	.set_voltage_sel = regulator_set_voltage_sel_regmap,
	.get_voltage_sel = regulator_get_voltage_sel_regmap,
	.set_ramp_delay = ltc3589_set_ramp_delay,
	.set_voltage_time_sel = regulator_set_voltage_time_sel,
	.set_suspend_voltage = ltc3589_set_suspend_voltage,
	.set_suspend_mode = ltc3589_set_suspend_mode,
};

/* BB_OUT, LDO3 */
static const struct regulator_ops ltc3589_fixed_regulator_ops = {
	.enable = regulator_enable_regmap,
	.disable = regulator_disable_regmap,
	.is_enabled = regulator_is_enabled_regmap,
};

/* LDO1 */
static const struct regulator_ops ltc3589_fixed_standby_regulator_ops = {
};

/* LDO4 */
static const struct regulator_ops ltc3589_table_regulator_ops = {
	.enable = regulator_enable_regmap,
	.disable = regulator_disable_regmap,
	.is_enabled = regulator_is_enabled_regmap,
	.list_voltage = regulator_list_voltage_table,
	.set_voltage_sel = regulator_set_voltage_sel_regmap,
	.get_voltage_sel = regulator_get_voltage_sel_regmap,
};


#define LTC3589_REG(_name, _ops, en_bit, dtv1_reg, dtv_mask, go_bit)	\
	[LTC3589_ ## _name] = {						\
		.desc = {						\
			.name = #_name,					\
			.n_voltages = (dtv_mask) + 1,			\
			.min_uV = (go_bit) ? 362500 : 0,		\
			.uV_step = (go_bit) ? 12500 : 0,		\
			.ramp_delay = (go_bit) ? 1750 : 0,		\
			.fixed_uV = (dtv_mask) ? 0 : 800000,		\
			.ops = &ltc3589_ ## _ops ## _regulator_ops,	\
			.type = REGULATOR_VOLTAGE,			\
			.id = LTC3589_ ## _name,			\
			.owner = THIS_MODULE,				\
			.vsel_reg = (dtv1_reg),			\
			.vsel_mask = (dtv_mask),			\
			.apply_reg = (go_bit) ? LTC3589_VCCR : 0,	\
			.apply_bit = (go_bit),				\
			.enable_reg = (en_bit) ? LTC3589_OVEN : 0,	\
			.enable_mask = (en_bit),			\
		},							\
	}

#define LTC3589_LINEAR_REG(_name, _dtv1)				\
	LTC3589_REG(_name, linear, LTC3589_OVEN_ ## _name,		\
		    LTC3589_ ## _dtv1, 0x1f,				\
		    LTC3589_VCCR_ ## _name ## _GO)

#define LTC3589_FIXED_REG(_name) \
	LTC3589_REG(_name, fixed, LTC3589_OVEN_ ## _name, 0, 0, 0)

static struct ltc3589_regulator ltc3589_regulators[LTC3589_NUM_REGULATORS] = {
	LTC3589_LINEAR_REG(SW1, B1DTV1),
	LTC3589_LINEAR_REG(SW2, B2DTV1),
	LTC3589_LINEAR_REG(SW3, B3DTV1),
	LTC3589_FIXED_REG(BB_OUT),
	LTC3589_REG(LDO1, fixed_standby, 0, 0, 0, 0),
	LTC3589_LINEAR_REG(LDO2, L2DTV1),
	LTC3589_FIXED_REG(LDO3),
	LTC3589_REG(LDO4, table, LTC3589_OVEN_LDO4, LTC3589_L2DTV2, 0x60, 0),
};

#ifdef CONFIG_OF
static struct of_regulator_match ltc3589_matches[LTC3589_NUM_REGULATORS] = {
	{ .name = "sw1",    },
	{ .name = "sw2",    },
	{ .name = "sw3",    },
	{ .name = "bb-out", },
	{ .name = "ldo1",   }, /* standby */
	{ .name = "ldo2",   },
	{ .name = "ldo3",   },
	{ .name = "ldo4",   },
};

static int ltc3589_parse_regulators_dt(struct ltc3589 *ltc3589)
{
	struct device *dev = ltc3589->dev;
	struct device_node *node;
	int i, ret;

	node = of_get_child_by_name(dev->of_node, "regulators");
	if (!node) {
		dev_err(dev, "regulators node not found\n");
		return -EINVAL;
	}

	ret = of_regulator_match(dev, node, ltc3589_matches,
				 ARRAY_SIZE(ltc3589_matches));
	of_node_put(node);
	if (ret < 0) {
		dev_err(dev, "Error parsing regulator init data: %d\n", ret);
		return ret;
	}
	if (ret != LTC3589_NUM_REGULATORS) {
		dev_err(dev, "Only %d regulators described in device tree\n",
			ret);
		return -EINVAL