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pinctrl: qcom: Extract chip specific LPASS LPI code
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Extract the chip specific SM8250 data from the LPASS LPI pinctrl driver
to allow reusing the common code in the addition of subsequent
platforms.

Signed-off-by: Srinivasa Rao Mandadapu <quic_srivasam@quicinc.com>
Co-developed-by: Venkata Prasad Potturu <quic_potturu@quicinc.com>
Signed-off-by: Venkata Prasad Potturu <quic_potturu@quicinc.com>
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@intel-lab-lkp
Srinivasa Rao Mandadapu authored and intel-lab-lkp committed Feb 21, 2022
1 parent 35b521e commit c6ece60
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Showing 5 changed files with 265 additions and 228 deletions.
8 changes: 8 additions & 0 deletions drivers/pinctrl/qcom/Kconfig
View file
Expand Up @@ -329,6 +329,14 @@ config PINCTRL_SM8250
Qualcomm Technologies Inc TLMM block found on the Qualcomm
Technologies Inc SM8250 platform.

config PINCTRL_SM8250_LPASS_LPI
tristate "Qualcomm Technologies Inc SM8250 LPASS LPI pin controller driver"
select PINCTRL_LPASS_LPI
help
This is the pinctrl, pinmux, pinconf and gpiolib driver for the
Qualcomm Technologies Inc LPASS (Low Power Audio SubSystem) LPI
(Low Power Island) found on the Qualcomm Technologies Inc SM8250 platform.

config PINCTRL_SM8350
tristate "Qualcomm Technologies Inc SM8350 pin controller driver"
depends on PINCTRL_MSM
Expand Down
1 change: 1 addition & 0 deletions drivers/pinctrl/qcom/Makefile
View file
Expand Up @@ -38,6 +38,7 @@ obj-$(CONFIG_PINCTRL_SM6350) += pinctrl-sm6350.o
obj-$(CONFIG_PINCTRL_SDX65) += pinctrl-sdx65.o
obj-$(CONFIG_PINCTRL_SM8150) += pinctrl-sm8150.o
obj-$(CONFIG_PINCTRL_SM8250) += pinctrl-sm8250.o
obj-$(CONFIG_PINCTRL_SM8250_LPASS_LPI) += pinctrl-sm8250-lpass-lpi.o
obj-$(CONFIG_PINCTRL_SM8350) += pinctrl-sm8350.o
obj-$(CONFIG_PINCTRL_SM8450) += pinctrl-sm8450.o
obj-$(CONFIG_PINCTRL_LPASS_LPI) += pinctrl-lpass-lpi.o
233 changes: 5 additions & 228 deletions drivers/pinctrl/qcom/pinctrl-lpass-lpi.c
View file
Expand Up @@ -4,91 +4,15 @@
* Copyright (c) 2020 Linaro Ltd.
*/

#include <linux/bitops.h>
#include <linux/bitfield.h>
#include <linux/clk.h>
#include <linux/gpio/driver.h>
#include <linux/io.h>
#include <linux/module.h>
#include <linux/of_device.h>
#include <linux/of.h>
#include <linux/pinctrl/pinconf-generic.h>
#include <linux/pinctrl/pinconf.h>
#include <linux/pinctrl/pinmux.h>
#include <linux/platform_device.h>
#include <linux/slab.h>
#include <linux/types.h>
#include "../core.h"
#include "../pinctrl-utils.h"

#define LPI_SLEW_RATE_CTL_REG 0xa000
#define LPI_TLMM_REG_OFFSET 0x1000
#define LPI_SLEW_RATE_MAX 0x03
#define LPI_SLEW_BITS_SIZE 0x02
#define LPI_SLEW_RATE_MASK GENMASK(1, 0)
#define LPI_GPIO_CFG_REG 0x00
#define LPI_GPIO_PULL_MASK GENMASK(1, 0)
#define LPI_GPIO_FUNCTION_MASK GENMASK(5, 2)
#define LPI_GPIO_OUT_STRENGTH_MASK GENMASK(8, 6)
#define LPI_GPIO_OE_MASK BIT(9)
#define LPI_GPIO_VALUE_REG 0x04
#define LPI_GPIO_VALUE_IN_MASK BIT(0)
#define LPI_GPIO_VALUE_OUT_MASK BIT(1)

#define LPI_GPIO_BIAS_DISABLE 0x0
#define LPI_GPIO_PULL_DOWN 0x1
#define LPI_GPIO_KEEPER 0x2
#define LPI_GPIO_PULL_UP 0x3
#define LPI_GPIO_DS_TO_VAL(v) (v / 2 - 1)
#define LPI_NO_SLEW -1

#define LPI_FUNCTION(fname) \
[LPI_MUX_##fname] = { \
.name = #fname, \
.groups = fname##_groups, \
.ngroups = ARRAY_SIZE(fname##_groups), \
}

#define LPI_PINGROUP(id, soff, f1, f2, f3, f4) \
{ \
.group.name = "gpio" #id, \
.group.pins = gpio##id##_pins, \
.pin = id, \
.slew_offset = soff, \
.group.num_pins = ARRAY_SIZE(gpio##id##_pins), \
.funcs = (int[]){ \
LPI_MUX_gpio, \
LPI_MUX_##f1, \
LPI_MUX_##f2, \
LPI_MUX_##f3, \
LPI_MUX_##f4, \
}, \
.nfuncs = 5, \
}

struct lpi_pingroup {
struct group_desc group;
unsigned int pin;
/* Bit offset in slew register for SoundWire pins only */
int slew_offset;
unsigned int *funcs;
unsigned int nfuncs;
};

struct lpi_function {
const char *name;
const char * const *groups;
unsigned int ngroups;
};

struct lpi_pinctrl_variant_data {
const struct pinctrl_pin_desc *pins;
int npins;
const struct lpi_pingroup *groups;
int ngroups;
const struct lpi_function *functions;
int nfunctions;
};
#include "pinctrl-lpass-lpi.h"

#define MAX_LPI_NUM_CLKS 2

Expand All @@ -104,136 +28,6 @@ struct lpi_pinctrl {
const struct lpi_pinctrl_variant_data *data;
};

/* sm8250 variant specific data */
static const struct pinctrl_pin_desc sm8250_lpi_pins[] = {
PINCTRL_PIN(0, "gpio0"),
PINCTRL_PIN(1, "gpio1"),
PINCTRL_PIN(2, "gpio2"),
PINCTRL_PIN(3, "gpio3"),
PINCTRL_PIN(4, "gpio4"),
PINCTRL_PIN(5, "gpio5"),
PINCTRL_PIN(6, "gpio6"),
PINCTRL_PIN(7, "gpio7"),
PINCTRL_PIN(8, "gpio8"),
PINCTRL_PIN(9, "gpio9"),
PINCTRL_PIN(10, "gpio10"),
PINCTRL_PIN(11, "gpio11"),
PINCTRL_PIN(12, "gpio12"),
PINCTRL_PIN(13, "gpio13"),
};

enum sm8250_lpi_functions {
LPI_MUX_dmic1_clk,
LPI_MUX_dmic1_data,
LPI_MUX_dmic2_clk,
LPI_MUX_dmic2_data,
LPI_MUX_dmic3_clk,
LPI_MUX_dmic3_data,
LPI_MUX_i2s1_clk,
LPI_MUX_i2s1_data,
LPI_MUX_i2s1_ws,
LPI_MUX_i2s2_clk,
LPI_MUX_i2s2_data,
LPI_MUX_i2s2_ws,
LPI_MUX_qua_mi2s_data,
LPI_MUX_qua_mi2s_sclk,
LPI_MUX_qua_mi2s_ws,
LPI_MUX_swr_rx_clk,
LPI_MUX_swr_rx_data,
LPI_MUX_swr_tx_clk,
LPI_MUX_swr_tx_data,
LPI_MUX_wsa_swr_clk,
LPI_MUX_wsa_swr_data,
LPI_MUX_gpio,
LPI_MUX__,
};

static int gpio0_pins[] = { 0 };
static int gpio1_pins[] = { 1 };
static int gpio2_pins[] = { 2 };
static int gpio3_pins[] = { 3 };
static int gpio4_pins[] = { 4 };
static int gpio5_pins[] = { 5 };
static int gpio6_pins[] = { 6 };
static int gpio7_pins[] = { 7 };
static int gpio8_pins[] = { 8 };
static int gpio9_pins[] = { 9 };
static int gpio10_pins[] = { 10 };
static int gpio11_pins[] = { 11 };
static int gpio12_pins[] = { 12 };
static int gpio13_pins[] = { 13 };
static const char * const swr_tx_clk_groups[] = { "gpio0" };
static const char * const swr_tx_data_groups[] = { "gpio1", "gpio2", "gpio5" };
static const char * const swr_rx_clk_groups[] = { "gpio3" };
static const char * const swr_rx_data_groups[] = { "gpio4", "gpio5" };
static const char * const dmic1_clk_groups[] = { "gpio6" };
static const char * const dmic1_data_groups[] = { "gpio7" };
static const char * const dmic2_clk_groups[] = { "gpio8" };
static const char * const dmic2_data_groups[] = { "gpio9" };
static const char * const i2s2_clk_groups[] = { "gpio10" };
static const char * const i2s2_ws_groups[] = { "gpio11" };
static const char * const dmic3_clk_groups[] = { "gpio12" };
static const char * const dmic3_data_groups[] = { "gpio13" };
static const char * const qua_mi2s_sclk_groups[] = { "gpio0" };
static const char * const qua_mi2s_ws_groups[] = { "gpio1" };
static const char * const qua_mi2s_data_groups[] = { "gpio2", "gpio3", "gpio4" };
static const char * const i2s1_clk_groups[] = { "gpio6" };
static const char * const i2s1_ws_groups[] = { "gpio7" };
static const char * const i2s1_data_groups[] = { "gpio8", "gpio9" };
static const char * const wsa_swr_clk_groups[] = { "gpio10" };
static const char * const wsa_swr_data_groups[] = { "gpio11" };
static const char * const i2s2_data_groups[] = { "gpio12", "gpio12" };

static const struct lpi_pingroup sm8250_groups[] = {
LPI_PINGROUP(0, 0, swr_tx_clk, qua_mi2s_sclk, _, _),
LPI_PINGROUP(1, 2, swr_tx_data, qua_mi2s_ws, _, _),
LPI_PINGROUP(2, 4, swr_tx_data, qua_mi2s_data, _, _),
LPI_PINGROUP(3, 8, swr_rx_clk, qua_mi2s_data, _, _),
LPI_PINGROUP(4, 10, swr_rx_data, qua_mi2s_data, _, _),
LPI_PINGROUP(5, 12, swr_tx_data, swr_rx_data, _, _),
LPI_PINGROUP(6, LPI_NO_SLEW, dmic1_clk, i2s1_clk, _, _),
LPI_PINGROUP(7, LPI_NO_SLEW, dmic1_data, i2s1_ws, _, _),
LPI_PINGROUP(8, LPI_NO_SLEW, dmic2_clk, i2s1_data, _, _),
LPI_PINGROUP(9, LPI_NO_SLEW, dmic2_data, i2s1_data, _, _),
LPI_PINGROUP(10, 16, i2s2_clk, wsa_swr_clk, _, _),
LPI_PINGROUP(11, 18, i2s2_ws, wsa_swr_data, _, _),
LPI_PINGROUP(12, LPI_NO_SLEW, dmic3_clk, i2s2_data, _, _),
LPI_PINGROUP(13, LPI_NO_SLEW, dmic3_data, i2s2_data, _, _),
};

static const struct lpi_function sm8250_functions[] = {
LPI_FUNCTION(dmic1_clk),
LPI_FUNCTION(dmic1_data),
LPI_FUNCTION(dmic2_clk),
LPI_FUNCTION(dmic2_data),
LPI_FUNCTION(dmic3_clk),
LPI_FUNCTION(dmic3_data),
LPI_FUNCTION(i2s1_clk),
LPI_FUNCTION(i2s1_data),
LPI_FUNCTION(i2s1_ws),
LPI_FUNCTION(i2s2_clk),
LPI_FUNCTION(i2s2_data),
LPI_FUNCTION(i2s2_ws),
LPI_FUNCTION(qua_mi2s_data),
LPI_FUNCTION(qua_mi2s_sclk),
LPI_FUNCTION(qua_mi2s_ws),
LPI_FUNCTION(swr_rx_clk),
LPI_FUNCTION(swr_rx_data),
LPI_FUNCTION(swr_tx_clk),
LPI_FUNCTION(swr_tx_data),
LPI_FUNCTION(wsa_swr_clk),
LPI_FUNCTION(wsa_swr_data),
};

static struct lpi_pinctrl_variant_data sm8250_lpi_data = {
.pins = sm8250_lpi_pins,
.npins = ARRAY_SIZE(sm8250_lpi_pins),
.groups = sm8250_groups,
.ngroups = ARRAY_SIZE(sm8250_groups),
.functions = sm8250_functions,
.nfunctions = ARRAY_SIZE(sm8250_functions),
};

static int lpi_gpio_read(struct lpi_pinctrl *state, unsigned int pin,
unsigned int addr)
{
Expand Down Expand Up @@ -580,7 +374,7 @@ static const struct gpio_chip lpi_gpio_template = {
.dbg_show = lpi_gpio_dbg_show,
};

static int lpi_pinctrl_probe(struct platform_device *pdev)
int lpi_pinctrl_probe(struct platform_device *pdev)
{
const struct lpi_pinctrl_variant_data *data;
struct device *dev = &pdev->dev;
Expand Down Expand Up @@ -659,8 +453,9 @@ static int lpi_pinctrl_probe(struct platform_device *pdev)

return ret;
}
EXPORT_SYMBOL_GPL(lpi_pinctrl_probe);

static int lpi_pinctrl_remove(struct platform_device *pdev)
int lpi_pinctrl_remove(struct platform_device *pdev)
{
struct lpi_pinctrl *pctrl = platform_get_drvdata(pdev);

Expand All @@ -669,25 +464,7 @@ static int lpi_pinctrl_remove(struct platform_device *pdev)

return 0;
}
EXPORT_SYMBOL_GPL(lpi_pinctrl_remove);

static const struct of_device_id lpi_pinctrl_of_match[] = {
{
.compatible = "qcom,sm8250-lpass-lpi-pinctrl",
.data = &sm8250_lpi_data,
},
{ }
};
MODULE_DEVICE_TABLE(of, lpi_pinctrl_of_match);

static struct platform_driver lpi_pinctrl_driver = {
.driver = {
.name = "qcom-lpass-lpi-pinctrl",
.of_match_table = lpi_pinctrl_of_match,
},
.probe = lpi_pinctrl_probe,
.remove = lpi_pinctrl_remove,
};

module_platform_driver(lpi_pinctrl_driver);
MODULE_DESCRIPTION("QTI LPI GPIO pin control driver");
MODULE_LICENSE("GPL");
85 changes: 85 additions & 0 deletions drivers/pinctrl/qcom/pinctrl-lpass-lpi.h
View file
@@ -0,0 +1,85 @@
/* SPDX-License-Identifier: GPL-2.0-only */
/*
* Copyright (c) 2016-2019, The Linux Foundation. All rights reserved.
* Copyright (c) 2020 Linaro Ltd.
*/
#ifndef __PINCTRL_LPASS_LPI_H__
#define __PINCTRL_LPASS_LPI_H__

#include <linux/bitops.h>
#include <linux/bitfield.h>
#include "../core.h"

#define LPI_SLEW_RATE_CTL_REG 0xa000
#define LPI_TLMM_REG_OFFSET 0x1000
#define LPI_SLEW_RATE_MAX 0x03
#define LPI_SLEW_BITS_SIZE 0x02
#define LPI_SLEW_RATE_MASK GENMASK(1, 0)
#define LPI_GPIO_CFG_REG 0x00
#define LPI_GPIO_PULL_MASK GENMASK(1, 0)
#define LPI_GPIO_FUNCTION_MASK GENMASK(5, 2)
#define LPI_GPIO_OUT_STRENGTH_MASK GENMASK(8, 6)
#define LPI_GPIO_OE_MASK BIT(9)
#define LPI_GPIO_VALUE_REG 0x04
#define LPI_GPIO_VALUE_IN_MASK BIT(0)
#define LPI_GPIO_VALUE_OUT_MASK BIT(1)

#define LPI_GPIO_BIAS_DISABLE 0x0
#define LPI_GPIO_PULL_DOWN 0x1
#define LPI_GPIO_KEEPER 0x2
#define LPI_GPIO_PULL_UP 0x3
#define LPI_GPIO_DS_TO_VAL(v) (v / 2 - 1)
#define LPI_NO_SLEW -1

#define LPI_FUNCTION(fname) \
[LPI_MUX_##fname] = { \
.name = #fname, \
.groups = fname##_groups, \
.ngroups = ARRAY_SIZE(fname##_groups), \
}

#define LPI_PINGROUP(id, soff, f1, f2, f3, f4) \
{ \
.group.name = "gpio" #id, \
.group.pins = gpio##id##_pins, \
.pin = id, \
.slew_offset = soff, \
.group.num_pins = ARRAY_SIZE(gpio##id##_pins), \
.funcs = (int[]){ \
LPI_MUX_gpio, \
LPI_MUX_##f1, \
LPI_MUX_##f2, \
LPI_MUX_##f3, \
LPI_MUX_##f4, \
}, \
.nfuncs = 5, \
}

struct lpi_pingroup {
struct group_desc group;
unsigned int pin;
/* Bit offset in slew register for SoundWire pins only */
int slew_offset;
unsigned int *funcs;
unsigned int nfuncs;
};

struct lpi_function {
const char *name;
const char * const *groups;
unsigned int ngroups;
};

struct lpi_pinctrl_variant_data {
const struct pinctrl_pin_desc *pins;
int npins;
const struct lpi_pingroup *groups;
int ngroups;
const struct lpi_function *functions;
int nfunctions;
};

int lpi_pinctrl_probe(struct platform_device *pdev);
int lpi_pinctrl_remove(struct platform_device *pdev);

#endif /*__PINCTRL_LPASS_LPI_H__*/

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