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linux/drivers/input/joystick/psxpad-spi.c
Uwe Kleine-König a78acec53b
Input: pxspad - follow renaming of SPI "master" to "controller" 
In commit 8caab75fd2 ("spi: Generalize SPI "master" to "controller"")
some functions and struct members were renamed. To not break all drivers
compatibility macros were provided.

To be able to remove these compatibility macros push the renaming into
this driver.

Acked-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Acked-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Link: https://lore.kernel.org/r/820fa151077dc192391d546aec35328680803f9f.1707324794.git.u.kleine-koenig@pengutronix.de
Signed-off-by: Mark Brown <broonie@kernel.org>
2024-02-08 11:54:38 +00:00

409 lines
11 KiB
C
Raw Blame History

// SPDX-License-Identifier: GPL-2.0-or-later
/*
* PlayStation 1/2 joypads via SPI interface Driver
*
* Copyright (C) 2017 Tomohiro Yoshidomi <sylph23k@gmail.com>
*
* PlayStation 1/2 joypad's plug (not socket)
* 123 456 789
* (...|...|...)
*
* 1: DAT -> MISO (pullup with 1k owm to 3.3V)
* 2: CMD -> MOSI
* 3: 9V (for motor, if not use N.C.)
* 4: GND
* 5: 3.3V
* 6: Attention -> CS(SS)
* 7: SCK -> SCK
* 8: N.C.
* 9: ACK -> N.C.
*/
#include <linux/kernel.h>
#include <linux/device.h>
#include <linux/input.h>
#include <linux/module.h>
#include <linux/spi/spi.h>
#include <linux/types.h>
#include <linux/pm.h>
#include <linux/pm_runtime.h>
#define REVERSE_BIT(x) ((((x) & 0x80) >> 7) | (((x) & 0x40) >> 5) | \
(((x) & 0x20) >> 3) | (((x) & 0x10) >> 1) | (((x) & 0x08) << 1) | \
(((x) & 0x04) << 3) | (((x) & 0x02) << 5) | (((x) & 0x01) << 7))
/* PlayStation 1/2 joypad command and response are LSBFIRST. */
/*
* 0x01, 0x42, 0x00, 0x00, 0x00,
* 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
* 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00
*/
static const u8 PSX_CMD_POLL[] = {
0x80, 0x42, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00
};
#ifdef CONFIG_JOYSTICK_PSXPAD_SPI_FF
/* 0x01, 0x43, 0x00, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00 */
static const u8 PSX_CMD_ENTER_CFG[] = {
0x80, 0xC2, 0x00, 0x80, 0x00, 0x00, 0x00, 0x00, 0x00
};
/* 0x01, 0x43, 0x00, 0x00, 0x5A, 0x5A, 0x5A, 0x5A, 0x5A */
static const u8 PSX_CMD_EXIT_CFG[] = {
0x80, 0xC2, 0x00, 0x00, 0x5A, 0x5A, 0x5A, 0x5A, 0x5A
};
/* 0x01, 0x4D, 0x00, 0x00, 0x01, 0xFF, 0xFF, 0xFF, 0xFF */
static const u8 PSX_CMD_ENABLE_MOTOR[] = {
0x80, 0xB2, 0x00, 0x00, 0x80, 0xFF, 0xFF, 0xFF, 0xFF
};
#endif /* CONFIG_JOYSTICK_PSXPAD_SPI_FF */
struct psxpad {
struct spi_device *spi;
struct input_dev *idev;
char phys[0x20];
bool motor1enable;
bool motor2enable;
u8 motor1level;
u8 motor2level;
u8 sendbuf[0x20] ____cacheline_aligned;
u8 response[sizeof(PSX_CMD_POLL)] ____cacheline_aligned;
};
static int psxpad_command(struct psxpad *pad, const u8 sendcmdlen)
{
struct spi_transfer xfers = {
.tx_buf = pad->sendbuf,
.rx_buf = pad->response,
.len = sendcmdlen,
};
int err;
err = spi_sync_transfer(pad->spi, &xfers, 1);
if (err) {
dev_err(&pad->spi->dev,
"%s: failed to SPI xfers mode: %d\n",
__func__, err);
return err;
}
return 0;
}
#ifdef CONFIG_JOYSTICK_PSXPAD_SPI_FF
static void psxpad_control_motor(struct psxpad *pad,
bool motor1enable, bool motor2enable)
{
int err;
pad->motor1enable = motor1enable;
pad->motor2enable = motor2enable;
memcpy(pad->sendbuf, PSX_CMD_ENTER_CFG, sizeof(PSX_CMD_ENTER_CFG));
err = psxpad_command(pad, sizeof(PSX_CMD_ENTER_CFG));
if (err) {
dev_err(&pad->spi->dev,
"%s: failed to enter config mode: %d\n",
__func__, err);
return;
}
memcpy(pad->sendbuf, PSX_CMD_ENABLE_MOTOR,
sizeof(PSX_CMD_ENABLE_MOTOR));
pad->sendbuf[3] = pad->motor1enable ? 0x00 : 0xFF;
pad->sendbuf[4] = pad->motor2enable ? 0x80 : 0xFF;
err = psxpad_command(pad, sizeof(PSX_CMD_ENABLE_MOTOR));
if (err) {
dev_err(&pad->spi->dev,
"%s: failed to enable motor mode: %d\n",
__func__, err);
return;
}
memcpy(pad->sendbuf, PSX_CMD_EXIT_CFG, sizeof(PSX_CMD_EXIT_CFG));
err = psxpad_command(pad, sizeof(PSX_CMD_EXIT_CFG));
if (err) {
dev_err(&pad->spi->dev,
"%s: failed to exit config mode: %d\n",
__func__, err);
return;
}
}
static void psxpad_set_motor_level(struct psxpad *pad,
u8 motor1level, u8 motor2level)
{
pad->motor1level = motor1level ? 0xFF : 0x00;
pad->motor2level = REVERSE_BIT(motor2level);
}
static int psxpad_spi_play_effect(struct input_dev *idev,
void *data, struct ff_effect *effect)
{
struct psxpad *pad = input_get_drvdata(idev);
switch (effect->type) {
case FF_RUMBLE:
psxpad_set_motor_level(pad,
(effect->u.rumble.weak_magnitude >> 8) & 0xFFU,
(effect->u.rumble.strong_magnitude >> 8) & 0xFFU);
break;
}
return 0;
}
static int psxpad_spi_init_ff(struct psxpad *pad)
{
int err;
input_set_capability(pad->idev, EV_FF, FF_RUMBLE);
err = input_ff_create_memless(pad->idev, NULL, psxpad_spi_play_effect);
if (err) {
dev_err(&pad->spi->dev,
"input_ff_create_memless() failed: %d\n", err);
return err;
}
return 0;
}
#else /* CONFIG_JOYSTICK_PSXPAD_SPI_FF */
static void psxpad_control_motor(struct psxpad *pad,
bool motor1enable, bool motor2enable)
{
}
static void psxpad_set_motor_level(struct psxpad *pad,
u8 motor1level, u8 motor2level)
{
}
static inline int psxpad_spi_init_ff(struct psxpad *pad)
{
return 0;
}
#endif /* CONFIG_JOYSTICK_PSXPAD_SPI_FF */
static int psxpad_spi_poll_open(struct input_dev *input)
{
struct psxpad *pad = input_get_drvdata(input);
pm_runtime_get_sync(&pad->spi->dev);
return 0;
}
static void psxpad_spi_poll_close(struct input_dev *input)
{
struct psxpad *pad = input_get_drvdata(input);
pm_runtime_put_sync(&pad->spi->dev);
}
static void psxpad_spi_poll(struct input_dev *input)
{
struct psxpad *pad = input_get_drvdata(input);
u8 b_rsp3, b_rsp4;
int err;
psxpad_control_motor(pad, true, true);
memcpy(pad->sendbuf, PSX_CMD_POLL, sizeof(PSX_CMD_POLL));
pad->sendbuf[3] = pad->motor1enable ? pad->motor1level : 0x00;
pad->sendbuf[4] = pad->motor2enable ? pad->motor2level : 0x00;
err = psxpad_command(pad, sizeof(PSX_CMD_POLL));
if (err) {
dev_err(&pad->spi->dev,
"%s: poll command failed mode: %d\n", __func__, err);
return;
}
switch (pad->response[1]) {
case 0xCE: /* 0x73 : analog 1 */
/* button data is inverted */
b_rsp3 = ~pad->response[3];
b_rsp4 = ~pad->response[4];
input_report_abs(input, ABS_X, REVERSE_BIT(pad->response[7]));
input_report_abs(input, ABS_Y, REVERSE_BIT(pad->response[8]));
input_report_abs(input, ABS_RX, REVERSE_BIT(pad->response[5]));
input_report_abs(input, ABS_RY, REVERSE_BIT(pad->response[6]));
input_report_key(input, BTN_DPAD_UP, b_rsp3 & BIT(3));
input_report_key(input, BTN_DPAD_DOWN, b_rsp3 & BIT(1));
input_report_key(input, BTN_DPAD_LEFT, b_rsp3 & BIT(0));
input_report_key(input, BTN_DPAD_RIGHT, b_rsp3 & BIT(2));
input_report_key(input, BTN_X, b_rsp4 & BIT(3));
input_report_key(input, BTN_A, b_rsp4 & BIT(2));
input_report_key(input, BTN_B, b_rsp4 & BIT(1));
input_report_key(input, BTN_Y, b_rsp4 & BIT(0));
input_report_key(input, BTN_TL, b_rsp4 & BIT(5));
input_report_key(input, BTN_TR, b_rsp4 & BIT(4));
input_report_key(input, BTN_TL2, b_rsp4 & BIT(7));
input_report_key(input, BTN_TR2, b_rsp4 & BIT(6));
input_report_key(input, BTN_THUMBL, b_rsp3 & BIT(6));
input_report_key(input, BTN_THUMBR, b_rsp3 & BIT(5));
input_report_key(input, BTN_SELECT, b_rsp3 & BIT(7));
input_report_key(input, BTN_START, b_rsp3 & BIT(4));
break;
case 0x82: /* 0x41 : digital */
/* button data is inverted */
b_rsp3 = ~pad->response[3];
b_rsp4 = ~pad->response[4];
input_report_abs(input, ABS_X, 0x80);
input_report_abs(input, ABS_Y, 0x80);
input_report_abs(input, ABS_RX, 0x80);
input_report_abs(input, ABS_RY, 0x80);
input_report_key(input, BTN_DPAD_UP, b_rsp3 & BIT(3));
input_report_key(input, BTN_DPAD_DOWN, b_rsp3 & BIT(1));
input_report_key(input, BTN_DPAD_LEFT, b_rsp3 & BIT(0));
input_report_key(input, BTN_DPAD_RIGHT, b_rsp3 & BIT(2));
input_report_key(input, BTN_X, b_rsp4 & BIT(3));
input_report_key(input, BTN_A, b_rsp4 & BIT(2));
input_report_key(input, BTN_B, b_rsp4 & BIT(1));
input_report_key(input, BTN_Y, b_rsp4 & BIT(0));
input_report_key(input, BTN_TL, b_rsp4 & BIT(5));
input_report_key(input, BTN_TR, b_rsp4 & BIT(4));
input_report_key(input, BTN_TL2, b_rsp4 & BIT(7));
input_report_key(input, BTN_TR2, b_rsp4 & BIT(6));
input_report_key(input, BTN_THUMBL, false);
input_report_key(input, BTN_THUMBR, false);
input_report_key(input, BTN_SELECT, b_rsp3 & BIT(7));
input_report_key(input, BTN_START, b_rsp3 & BIT(4));
break;
}
input_sync(input);
}
static int psxpad_spi_probe(struct spi_device *spi)
{
struct psxpad *pad;
struct input_dev *idev;
int err;
pad = devm_kzalloc(&spi->dev, sizeof(struct psxpad), GFP_KERNEL);
if (!pad)
return -ENOMEM;
idev = devm_input_allocate_device(&spi->dev);
if (!idev) {
dev_err(&spi->dev, "failed to allocate input device\n");
return -ENOMEM;
}
/* input poll device settings */
pad->idev = idev;
pad->spi = spi;
/* input device settings */
input_set_drvdata(idev, pad);
idev->name = "PlayStation 1/2 joypad";
snprintf(pad->phys, sizeof(pad->phys), "%s/input", dev_name(&spi->dev));
idev->id.bustype = BUS_SPI;
idev->open = psxpad_spi_poll_open;
idev->close = psxpad_spi_poll_close;
/* key/value map settings */
input_set_abs_params(idev, ABS_X, 0, 255, 0, 0);
input_set_abs_params(idev, ABS_Y, 0, 255, 0, 0);
input_set_abs_params(idev, ABS_RX, 0, 255, 0, 0);
input_set_abs_params(idev, ABS_RY, 0, 255, 0, 0);
input_set_capability(idev, EV_KEY, BTN_DPAD_UP);
input_set_capability(idev, EV_KEY, BTN_DPAD_DOWN);
input_set_capability(idev, EV_KEY, BTN_DPAD_LEFT);
input_set_capability(idev, EV_KEY, BTN_DPAD_RIGHT);
input_set_capability(idev, EV_KEY, BTN_A);
input_set_capability(idev, EV_KEY, BTN_B);
input_set_capability(idev, EV_KEY, BTN_X);
input_set_capability(idev, EV_KEY, BTN_Y);
input_set_capability(idev, EV_KEY, BTN_TL);
input_set_capability(idev, EV_KEY, BTN_TR);
input_set_capability(idev, EV_KEY, BTN_TL2);
input_set_capability(idev, EV_KEY, BTN_TR2);
input_set_capability(idev, EV_KEY, BTN_THUMBL);
input_set_capability(idev, EV_KEY, BTN_THUMBR);
input_set_capability(idev, EV_KEY, BTN_SELECT);
input_set_capability(idev, EV_KEY, BTN_START);
err = psxpad_spi_init_ff(pad);
if (err)
return err;
/* SPI settings */
spi->mode = SPI_MODE_3;
spi->bits_per_word = 8;
/* (PlayStation 1/2 joypad might be possible works 250kHz/500kHz) */
spi->controller->min_speed_hz = 125000;
spi->controller->max_speed_hz = 125000;
spi_setup(spi);
/* pad settings */
psxpad_set_motor_level(pad, 0, 0);
err = input_setup_polling(idev, psxpad_spi_poll);
if (err) {
dev_err(&spi->dev, "failed to set up polling: %d\n", err);
return err;
}
/* poll interval is about 60fps */
input_set_poll_interval(idev, 16);
input_set_min_poll_interval(idev, 8);
input_set_max_poll_interval(idev, 32);
/* register input poll device */
err = input_register_device(idev);
if (err) {
dev_err(&spi->dev,
"failed to register input device: %d\n", err);
return err;
}
pm_runtime_enable(&spi->dev);
return 0;
}
static int psxpad_spi_suspend(struct device *dev)
{
struct spi_device *spi = to_spi_device(dev);
struct psxpad *pad = spi_get_drvdata(spi);
psxpad_set_motor_level(pad, 0, 0);
return 0;
}
static DEFINE_SIMPLE_DEV_PM_OPS(psxpad_spi_pm, psxpad_spi_suspend, NULL);
static const struct spi_device_id psxpad_spi_id[] = {
{ "psxpad-spi", 0 },
{ }
};
MODULE_DEVICE_TABLE(spi, psxpad_spi_id);
static struct spi_driver psxpad_spi_driver = {
.driver = {
.name = "psxpad-spi",
.pm = pm_sleep_ptr(&psxpad_spi_pm),
},
.id_table = psxpad_spi_id,
.probe = psxpad_spi_probe,
};
module_spi_driver(psxpad_spi_driver);
MODULE_AUTHOR("Tomohiro Yoshidomi <sylph23k@gmail.com>");
MODULE_DESCRIPTION("PlayStation 1/2 joypads via SPI interface Driver");
MODULE_LICENSE("GPL");
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