On Sun, Apr 30, 2017 at 02:11:03PM +0900, Tomohiro Yoshidomi wrote: > PlayStation 1/2 joypads can be connected directly to the SPI interface. > > Signed-off-by: Tomohiro Yoshidomi <[email protected]>
Benjamin, David, I think this driver now matches the gamepad spec that we have in Drivers/input/gamepad.rst. Could you give it an one-over, as far as mappings go, otherwise I think it can be applied and merged with my 2nd pull request. Thanks! > --- > drivers/input/joystick/Kconfig | 22 ++ > drivers/input/joystick/Makefile | 1 + > drivers/input/joystick/psxpad-spi.c | 438 > ++++++++++++++++++++++++++++++++++++ > 3 files changed, 461 insertions(+) > create mode 100644 drivers/input/joystick/psxpad-spi.c > > diff --git a/drivers/input/joystick/Kconfig b/drivers/input/joystick/Kconfig > index 4215b538..cbcb9a6e 100644 > --- a/drivers/input/joystick/Kconfig > +++ b/drivers/input/joystick/Kconfig > @@ -330,4 +330,26 @@ config JOYSTICK_MAPLE > To compile this as a module choose M here: the module will be called > maplecontrol. > > +config JOYSTICK_PSXPAD_SPI > + tristate "PlayStation 1/2 joypads via SPI interface" > + depends on SPI > + select INPUT_POLLDEV > + help > + Say Y here if you wish to connect PlayStation 1/2 joypads > + via SPI interface. > + > + To compile this driver as a module, choose M here: the > + module will be called psxpad-spi. > + > +config JOYSTICK_PSXPAD_SPI_FF > + bool "PlayStation 1/2 joypads force feedback (rumble) support" > + depends on JOYSTICK_PSXPAD_SPI > + select INPUT_FF_MEMLESS > + help > + Say Y here if you want to take advantage of > + PlayStation 1/2 joypads rumble features. > + > + To drive rumble motor, > + a dedicated power supply is required. > + > endif > diff --git a/drivers/input/joystick/Makefile b/drivers/input/joystick/Makefile > index 92dc0de9..496fd56b 100644 > --- a/drivers/input/joystick/Makefile > +++ b/drivers/input/joystick/Makefile > @@ -21,6 +21,7 @@ obj-$(CONFIG_JOYSTICK_INTERACT) += interact.o > obj-$(CONFIG_JOYSTICK_JOYDUMP) += joydump.o > obj-$(CONFIG_JOYSTICK_MAGELLAN) += magellan.o > obj-$(CONFIG_JOYSTICK_MAPLE) += maplecontrol.o > +obj-$(CONFIG_JOYSTICK_PSXPAD_SPI) += psxpad-spi.o > obj-$(CONFIG_JOYSTICK_SIDEWINDER) += sidewinder.o > obj-$(CONFIG_JOYSTICK_SPACEBALL) += spaceball.o > obj-$(CONFIG_JOYSTICK_SPACEORB) += spaceorb.o > diff --git a/drivers/input/joystick/psxpad-spi.c > b/drivers/input/joystick/psxpad-spi.c > new file mode 100644 > index 00000000..2627aecb > --- /dev/null > +++ b/drivers/input/joystick/psxpad-spi.c > @@ -0,0 +1,438 @@ > +/* > + * PlayStation 1/2 joypads via SPI interface Driver > + * > + * Copyright (C) 2017 Tomohiro Yoshidomi <[email protected]> > + * Licensed under the GPL-2 or later. > + * > + * 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/input-polldev.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 > +}; > +/* 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 > +}; > + > +struct psxpad { > + struct spi_device *spi; > + struct input_polled_dev *pdev; > + 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_setenablemotor( > + 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); > +} > +#else /* CONFIG_JOYSTICK_PSXPAD_SPI_FF */ > +static void psxpad_setenablemotor( > + struct psxpad *pad, bool motor1enable, bool motor2enable) { } > + > +static void psxpad_set_motor_level( > + struct psxpad *pad, u8 motor1level, u8 motor2level) { } > +#endif /* CONFIG_JOYSTICK_PSXPAD_SPI_FF */ > + > +static void psxpad_spi_poll_open(struct input_polled_dev *pdev) > +{ > + struct psxpad *pad = pdev->private; > + > + pm_runtime_get_sync(&pad->spi->dev); > +} > + > +static void psxpad_spi_poll_close(struct input_polled_dev *pdev) > +{ > + struct psxpad *pad = pdev->private; > + > + pm_runtime_put_sync(&pad->spi->dev); > +} > + > +static void psxpad_spi_poll(struct input_polled_dev *pdev) > +{ > + struct psxpad *pad = pdev->private; > + int err; > + > + psxpad_setenablemotor(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: failed to poll cmd mode: %d\n", > + __func__, err); > + return; > + } > + > + switch (pad->response[1]) { > + case 0xCE: /* 0x73 : analog 1 */ > + input_report_abs(pad->idev, > + ABS_X, REVERSE_BIT(pad->response[7])); > + input_report_abs(pad->idev, > + ABS_Y, REVERSE_BIT(pad->response[8])); > + input_report_abs(pad->idev, > + ABS_RX, REVERSE_BIT(pad->response[5])); > + input_report_abs(pad->idev, > + ABS_RY, REVERSE_BIT(pad->response[6])); > + input_report_key(pad->idev, > + BTN_DPAD_UP, !(pad->response[3] & BIT(3))); > + input_report_key(pad->idev, > + BTN_DPAD_DOWN, !(pad->response[3] & BIT(1))); > + input_report_key(pad->idev, > + BTN_DPAD_LEFT, !(pad->response[3] & BIT(0))); > + input_report_key(pad->idev, > + BTN_DPAD_RIGHT, !(pad->response[3] & BIT(2))); > + input_report_key(pad->idev, > + BTN_X, !(pad->response[4] & BIT(3))); > + input_report_key(pad->idev, > + BTN_A, !(pad->response[4] & BIT(2))); > + input_report_key(pad->idev, > + BTN_B, !(pad->response[4] & BIT(1))); > + input_report_key(pad->idev, > + BTN_Y, !(pad->response[4] & BIT(0))); > + input_report_key(pad->idev, > + BTN_TL, !(pad->response[4] & BIT(5))); > + input_report_key(pad->idev, > + BTN_TR, !(pad->response[4] & BIT(4))); > + input_report_key(pad->idev, > + BTN_TL2, !(pad->response[4] & BIT(7))); > + input_report_key(pad->idev, > + BTN_TR2, !(pad->response[4] & BIT(6))); > + input_report_key(pad->idev, > + BTN_THUMBL, !(pad->response[3] & BIT(6))); > + input_report_key(pad->idev, > + BTN_THUMBR, !(pad->response[3] & BIT(5))); > + input_report_key(pad->idev, > + BTN_SELECT, !(pad->response[3] & BIT(7))); > + input_report_key(pad->idev, > + BTN_START, !(pad->response[3] & BIT(4))); > + break; > + > + case 0x82: /* 0x41 : digital */ > + input_report_abs(pad->idev, > + ABS_X, 0x80); > + input_report_abs(pad->idev, > + ABS_Y, 0x80); > + input_report_abs(pad->idev, > + ABS_RX, 0x80); > + input_report_abs(pad->idev, > + ABS_RY, 0x80); > + input_report_key(pad->idev, > + BTN_DPAD_UP, !(pad->response[3] & BIT(3))); > + input_report_key(pad->idev, > + BTN_DPAD_DOWN, !(pad->response[3] & BIT(1))); > + input_report_key(pad->idev, > + BTN_DPAD_LEFT, !(pad->response[3] & BIT(0))); > + input_report_key(pad->idev, > + BTN_DPAD_RIGHT, !(pad->response[3] & BIT(2))); > + input_report_key(pad->idev, > + BTN_X, !(pad->response[4] & BIT(3))); > + input_report_key(pad->idev, > + BTN_A, !(pad->response[4] & BIT(2))); > + input_report_key(pad->idev, > + BTN_B, !(pad->response[4] & BIT(1))); > + input_report_key(pad->idev, > + BTN_Y, !(pad->response[4] & BIT(0))); > + input_report_key(pad->idev, > + BTN_TL, !(pad->response[4] & BIT(5))); > + input_report_key(pad->idev, > + BTN_TR, !(pad->response[4] & BIT(4))); > + input_report_key(pad->idev, > + BTN_TL2, !(pad->response[4] & BIT(7))); > + input_report_key(pad->idev, > + BTN_TR2, !(pad->response[4] & BIT(6))); > + input_report_key(pad->idev, > + BTN_THUMBL, false); > + input_report_key(pad->idev, > + BTN_THUMBR, false); > + input_report_key(pad->idev, > + BTN_SELECT, !(pad->response[3] & BIT(7))); > + input_report_key(pad->idev, > + BTN_START, !(pad->response[3] & BIT(4))); > + break; > + } > + > + input_sync(pad->idev); > +} > + > +#ifdef CONFIG_JOYSTICK_PSXPAD_SPI_FF > +static int psxpad_spi_ff( > + struct input_dev *idev, void *data, struct ff_effect *effect) > +{ > + struct input_polled_dev *pdev = input_get_drvdata(idev); > + struct psxpad *pad = pdev->private; > + > + 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_ff); > + if (err) { > + dev_err(&pad->spi->dev, > + "%s: failed to ff alloc mode: %d\n", > + __func__, err); > + } > + > + return err; > +} > +#else /* CONFIG_JOYSTICK_PSXPAD_SPI_FF */ > +static inline int psxpad_spi_init_ff(struct psxpad *pad) > +{ > + return 0; > +} > +#endif /* CONFIG_JOYSTICK_PSXPAD_SPI_FF */ > + > +static int psxpad_spi_probe(struct spi_device *spi) > +{ > + struct psxpad *pad; > + struct input_polled_dev *pdev; > + struct input_dev *idev; > + int err; > + > + pad = devm_kzalloc(&spi->dev, sizeof(struct psxpad), GFP_KERNEL); > + if (!pad) > + return -ENOMEM; > + pdev = input_allocate_polled_device(); > + if (!pdev) { > + dev_err(&spi->dev, > + "%s: failed to pdev alloc\n", > + __func__); > + return -ENOMEM; > + } > + > + /* input poll device settings */ > + pad->pdev = pdev; > + pad->spi = spi; > + pad->motor1enable = false; > + pad->motor2enable = false; > + pdev->private = pad; > + pdev->open = psxpad_spi_poll_open; > + pdev->close = psxpad_spi_poll_close; > + pdev->poll = psxpad_spi_poll; > + /* poll interval is about 60fps */ > + pdev->poll_interval = 16; > + pdev->poll_interval_min = 8; > + pdev->poll_interval_max = 32; > + > + /* input device settings */ > + idev = pdev->input; > + pad->idev = idev; > + idev->name = "PlayStation 1/2 joypad"; > + snprintf(pad->phys, sizeof(pad->phys), "%s/input", dev_name(&spi->dev)); > + idev->id.bustype = BUS_SPI; > + > + /* 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); > + > + /* force feedback */ > + err = psxpad_spi_init_ff(pad); > + if (err) { > + dev_err(&spi->dev, > + "%s: failed to init ff mode: %d\n", > + __func__, 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->master->min_speed_hz = 125000; > + spi->master->max_speed_hz = 125000; > + spi_setup(spi); > + > + /* pad settings */ > + psxpad_set_motor_level(pad, 0, 0); > + > + /* register input poll device */ > + err = input_register_polled_device(pdev); > + if (err) { > + dev_err(&spi->dev, > + "%s: failed to register input poll device: %d\n", > + __func__, err); > + return err; > + } > + > + pm_runtime_enable(&spi->dev); > + > + return 0; > +} > + > +static int __maybe_unused 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 int __maybe_unused psxpad_spi_resume(struct device *dev) > +{ > + return 0; > +} > + > +static SIMPLE_DEV_PM_OPS(psxpad_spi_pm, psxpad_spi_suspend, > psxpad_spi_resume); > + > +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 = &psxpad_spi_pm, > + }, > + .id_table = psxpad_spi_id, > + .probe = psxpad_spi_probe, > +}; > + > +module_spi_driver(psxpad_spi_driver); > + > +MODULE_AUTHOR("Tomohiro Yoshidomi <[email protected]>"); > +MODULE_DESCRIPTION("PlayStation 1/2 joypads via SPI interface Driver"); > +MODULE_LICENSE("GPL"); > -- > 2.11.0 > -- Dmitry
