diff options
Diffstat (limited to 'drivers/tty/serial/max3100.c')
| -rw-r--r-- | drivers/tty/serial/max3100.c | 840 |
1 files changed, 840 insertions, 0 deletions
diff --git a/drivers/tty/serial/max3100.c b/drivers/tty/serial/max3100.c new file mode 100644 index 000000000..a5a5cd68f --- /dev/null +++ b/drivers/tty/serial/max3100.c @@ -0,0 +1,840 @@ +// SPDX-License-Identifier: GPL-2.0+ +/* + * Copyright (C) 2008 Christian Pellegrin <chripell@evolware.org> + * + * Notes: the MAX3100 doesn't provide an interrupt on CTS so we have + * to use polling for flow control. TX empty IRQ is unusable, since + * writing conf clears FIFO buffer and we cannot have this interrupt + * always asking us for attention. + * + * The initial minor number is 209 in the low-density serial port: + * mknod /dev/ttyMAX0 c 204 209 + */ + +#define MAX3100_MAJOR 204 +#define MAX3100_MINOR 209 +/* 4 MAX3100s should be enough for everyone */ +#define MAX_MAX3100 4 + +#include <linux/bitops.h> +#include <linux/container_of.h> +#include <linux/delay.h> +#include <linux/device.h> +#include <linux/freezer.h> +#include <linux/module.h> +#include <linux/pm.h> +#include <linux/property.h> +#include <linux/serial_core.h> +#include <linux/serial.h> +#include <linux/slab.h> +#include <linux/spi/spi.h> +#include <linux/tty_flip.h> +#include <linux/tty.h> +#include <linux/types.h> + +#include <linux/unaligned.h> + +#define MAX3100_C (1<<14) +#define MAX3100_D (0<<14) +#define MAX3100_W (1<<15) +#define MAX3100_RX (0<<15) + +#define MAX3100_WC (MAX3100_W | MAX3100_C) +#define MAX3100_RC (MAX3100_RX | MAX3100_C) +#define MAX3100_WD (MAX3100_W | MAX3100_D) +#define MAX3100_RD (MAX3100_RX | MAX3100_D) +#define MAX3100_CMD (3 << 14) + +#define MAX3100_T (1<<14) +#define MAX3100_R (1<<15) + +#define MAX3100_FEN (1<<13) +#define MAX3100_SHDN (1<<12) +#define MAX3100_TM (1<<11) +#define MAX3100_RM (1<<10) +#define MAX3100_PM (1<<9) +#define MAX3100_RAM (1<<8) +#define MAX3100_IR (1<<7) +#define MAX3100_ST (1<<6) +#define MAX3100_PE (1<<5) +#define MAX3100_L (1<<4) +#define MAX3100_BAUD (0xf) + +#define MAX3100_TE (1<<10) +#define MAX3100_RAFE (1<<10) +#define MAX3100_RTS (1<<9) +#define MAX3100_CTS (1<<9) +#define MAX3100_PT (1<<8) +#define MAX3100_DATA (0xff) + +#define MAX3100_RT (MAX3100_R | MAX3100_T) +#define MAX3100_RTC (MAX3100_RT | MAX3100_CTS | MAX3100_RAFE) + +/* the following simulate a status reg for ignore_status_mask */ +#define MAX3100_STATUS_PE 1 +#define MAX3100_STATUS_FE 2 +#define MAX3100_STATUS_OE 4 + +struct max3100_port { + struct uart_port port; + struct spi_device *spi; + + int cts; /* last CTS received for flow ctrl */ + int tx_empty; /* last TX empty bit */ + + spinlock_t conf_lock; /* shared data */ + int conf_commit; /* need to make changes */ + int conf; /* configuration for the MAX31000 + * (bits 0-7, bits 8-11 are irqs) */ + int rts_commit; /* need to change rts */ + int rts; /* rts status */ + int baud; /* current baud rate */ + + int parity; /* keeps track if we should send parity */ +#define MAX3100_PARITY_ON 1 +#define MAX3100_PARITY_ODD 2 +#define MAX3100_7BIT 4 + int rx_enabled; /* if we should rx chars */ + + int minor; /* minor number */ + int loopback_commit; /* need to change loopback */ + int loopback; /* 1 if we are in loopback mode */ + + /* for handling irqs: need workqueue since we do spi_sync */ + struct workqueue_struct *workqueue; + struct work_struct work; + /* set to 1 to make the workhandler exit as soon as possible */ + int force_end_work; + /* need to know we are suspending to avoid deadlock on workqueue */ + int suspending; + + struct timer_list timer; +}; + +static inline struct max3100_port *to_max3100_port(struct uart_port *port) +{ + return container_of(port, struct max3100_port, port); +} + +static struct max3100_port *max3100s[MAX_MAX3100]; /* the chips */ +static DEFINE_MUTEX(max3100s_lock); /* race on probe */ + +static int max3100_do_parity(struct max3100_port *s, u16 c) +{ + int parity; + + if (s->parity & MAX3100_PARITY_ODD) + parity = 1; + else + parity = 0; + + if (s->parity & MAX3100_7BIT) + c &= 0x7f; + else + c &= 0xff; + + parity = parity ^ parity8(c); + return parity; +} + +static int max3100_check_parity(struct max3100_port *s, u16 c) +{ + return max3100_do_parity(s, c) == ((c >> 8) & 1); +} + +static void max3100_calc_parity(struct max3100_port *s, u16 *c) +{ + if (s->parity & MAX3100_7BIT) + *c &= 0x7f; + else + *c &= 0xff; + + if (s->parity & MAX3100_PARITY_ON) + *c |= max3100_do_parity(s, *c) << 8; +} + +static int max3100_sr(struct max3100_port *s, u16 tx, u16 *rx) +{ + struct spi_message message; + __be16 etx, erx; + int status; + struct spi_transfer tran = { + .tx_buf = &etx, + .rx_buf = &erx, + .len = 2, + }; + + etx = cpu_to_be16(tx); + spi_message_init(&message); + spi_message_add_tail(&tran, &message); + status = spi_sync(s->spi, &message); + if (status) { + dev_warn(&s->spi->dev, "error while calling spi_sync\n"); + return -EIO; + } + *rx = be16_to_cpu(erx); + s->tx_empty = (*rx & MAX3100_T) > 0; + dev_dbg(&s->spi->dev, "%04x - %04x\n", tx, *rx); + return 0; +} + +static int max3100_handlerx_unlocked(struct max3100_port *s, u16 rx) +{ + unsigned int status = 0; + int ret = 0, cts; + u8 ch, flg; + + if (rx & MAX3100_R && s->rx_enabled) { + dev_dbg(&s->spi->dev, "%s\n", __func__); + ch = rx & (s->parity & MAX3100_7BIT ? 0x7f : 0xff); + if (rx & MAX3100_RAFE) { + s->port.icount.frame++; + flg = TTY_FRAME; + status |= MAX3100_STATUS_FE; + } else { + if (s->parity & MAX3100_PARITY_ON) { + if (max3100_check_parity(s, rx)) { + s->port.icount.rx++; + flg = TTY_NORMAL; + } else { + s->port.icount.parity++; + flg = TTY_PARITY; + status |= MAX3100_STATUS_PE; + } + } else { + s->port.icount.rx++; + flg = TTY_NORMAL; + } + } + uart_insert_char(&s->port, status, MAX3100_STATUS_OE, ch, flg); + ret = 1; + } + + cts = (rx & MAX3100_CTS) > 0; + if (s->cts != cts) { + s->cts = cts; + uart_handle_cts_change(&s->port, cts); + } + + return ret; +} + +static int max3100_handlerx(struct max3100_port *s, u16 rx) +{ + unsigned long flags; + int ret; + + uart_port_lock_irqsave(&s->port, &flags); + ret = max3100_handlerx_unlocked(s, rx); + uart_port_unlock_irqrestore(&s->port, flags); + return ret; +} + +static void max3100_work(struct work_struct *w) +{ + struct max3100_port *s = container_of(w, struct max3100_port, work); + struct tty_port *tport = &s->port.state->port; + unsigned char ch; + int conf, cconf, cloopback, crts; + int rxchars; + u16 tx, rx; + + dev_dbg(&s->spi->dev, "%s\n", __func__); + + rxchars = 0; + do { + spin_lock(&s->conf_lock); + conf = s->conf; + cconf = s->conf_commit; + s->conf_commit = 0; + cloopback = s->loopback_commit; + s->loopback_commit = 0; + crts = s->rts_commit; + s->rts_commit = 0; + spin_unlock(&s->conf_lock); + if (cconf) + max3100_sr(s, MAX3100_WC | conf, &rx); + if (cloopback) + max3100_sr(s, 0x4001, &rx); + if (crts) { + max3100_sr(s, MAX3100_WD | MAX3100_TE | + (s->rts ? MAX3100_RTS : 0), &rx); + rxchars += max3100_handlerx(s, rx); + } + + max3100_sr(s, MAX3100_RD, &rx); + rxchars += max3100_handlerx(s, rx); + + if (rx & MAX3100_T) { + tx = 0xffff; + if (s->port.x_char) { + tx = s->port.x_char; + s->port.icount.tx++; + s->port.x_char = 0; + } else if (!uart_tx_stopped(&s->port) && + uart_fifo_get(&s->port, &ch)) { + tx = ch; + } + if (tx != 0xffff) { + max3100_calc_parity(s, &tx); + tx |= MAX3100_WD | (s->rts ? MAX3100_RTS : 0); + max3100_sr(s, tx, &rx); + rxchars += max3100_handlerx(s, rx); + } + } + + if (rxchars > 16) { + tty_flip_buffer_push(&s->port.state->port); + rxchars = 0; + } + if (kfifo_len(&tport->xmit_fifo) < WAKEUP_CHARS) + uart_write_wakeup(&s->port); + + } while (!s->force_end_work && + !freezing(current) && + ((rx & MAX3100_R) || + (!kfifo_is_empty(&tport->xmit_fifo) && + !uart_tx_stopped(&s->port)))); + + if (rxchars > 0) + tty_flip_buffer_push(&s->port.state->port); +} + +static void max3100_dowork(struct max3100_port *s) +{ + if (!s->force_end_work && !freezing(current) && !s->suspending) + queue_work(s->workqueue, &s->work); +} + +static void max3100_timeout(struct timer_list *t) +{ + struct max3100_port *s = timer_container_of(s, t, timer); + + max3100_dowork(s); + mod_timer(&s->timer, jiffies + uart_poll_timeout(&s->port)); +} + +static irqreturn_t max3100_irq(int irqno, void *dev_id) +{ + struct max3100_port *s = dev_id; + + dev_dbg(&s->spi->dev, "%s\n", __func__); + + max3100_dowork(s); + return IRQ_HANDLED; +} + +static void max3100_enable_ms(struct uart_port *port) +{ + struct max3100_port *s = to_max3100_port(port); + + mod_timer(&s->timer, jiffies); + dev_dbg(&s->spi->dev, "%s\n", __func__); +} + +static void max3100_start_tx(struct uart_port *port) +{ + struct max3100_port *s = to_max3100_port(port); + + dev_dbg(&s->spi->dev, "%s\n", __func__); + + max3100_dowork(s); +} + +static void max3100_stop_rx(struct uart_port *port) +{ + struct max3100_port *s = to_max3100_port(port); + + dev_dbg(&s->spi->dev, "%s\n", __func__); + + s->rx_enabled = 0; + spin_lock(&s->conf_lock); + s->conf &= ~MAX3100_RM; + s->conf_commit = 1; + spin_unlock(&s->conf_lock); + max3100_dowork(s); +} + +static unsigned int max3100_tx_empty(struct uart_port *port) +{ + struct max3100_port *s = to_max3100_port(port); + + dev_dbg(&s->spi->dev, "%s\n", __func__); + + /* may not be truly up-to-date */ + max3100_dowork(s); + return s->tx_empty; +} + +static unsigned int max3100_get_mctrl(struct uart_port *port) +{ + struct max3100_port *s = to_max3100_port(port); + + dev_dbg(&s->spi->dev, "%s\n", __func__); + + /* may not be truly up-to-date */ + max3100_dowork(s); + /* always assert DCD and DSR since these lines are not wired */ + return (s->cts ? TIOCM_CTS : 0) | TIOCM_DSR | TIOCM_CAR; +} + +static void max3100_set_mctrl(struct uart_port *port, unsigned int mctrl) +{ + struct max3100_port *s = to_max3100_port(port); + int loopback, rts; + + dev_dbg(&s->spi->dev, "%s\n", __func__); + + loopback = (mctrl & TIOCM_LOOP) > 0; + rts = (mctrl & TIOCM_RTS) > 0; + + spin_lock(&s->conf_lock); + if (s->loopback != loopback) { + s->loopback = loopback; + s->loopback_commit = 1; + } + if (s->rts != rts) { + s->rts = rts; + s->rts_commit = 1; + } + if (s->loopback_commit || s->rts_commit) + max3100_dowork(s); + spin_unlock(&s->conf_lock); +} + +static void +max3100_set_termios(struct uart_port *port, struct ktermios *termios, + const struct ktermios *old) +{ + struct max3100_port *s = to_max3100_port(port); + unsigned int baud = port->uartclk / 16; + unsigned int baud230400 = (baud == 230400) ? 1 : 0; + unsigned cflag; + u32 param_new, param_mask, parity = 0; + + dev_dbg(&s->spi->dev, "%s\n", __func__); + + cflag = termios->c_cflag; + param_mask = 0; + + baud = tty_termios_baud_rate(termios); + param_new = s->conf & MAX3100_BAUD; + switch (baud) { + case 300: + if (baud230400) + baud = s->baud; + else + param_new = 15; + break; + case 600: + param_new = 14 + baud230400; + break; + case 1200: + param_new = 13 + baud230400; + break; + case 2400: + param_new = 12 + baud230400; + break; + case 4800: + param_new = 11 + baud230400; + break; + case 9600: + param_new = 10 + baud230400; + break; + case 19200: + param_new = 9 + baud230400; + break; + case 38400: + param_new = 8 + baud230400; + break; + case 57600: + param_new = 1 + baud230400; + break; + case 115200: + param_new = 0 + baud230400; + break; + case 230400: + if (baud230400) + param_new = 0; + else + baud = s->baud; + break; + default: + baud = s->baud; + } + tty_termios_encode_baud_rate(termios, baud, baud); + s->baud = baud; + param_mask |= MAX3100_BAUD; + + if ((cflag & CSIZE) == CS8) { + param_new &= ~MAX3100_L; + parity &= ~MAX3100_7BIT; + } else { + param_new |= MAX3100_L; + parity |= MAX3100_7BIT; + cflag = (cflag & ~CSIZE) | CS7; + } + param_mask |= MAX3100_L; + + if (cflag & CSTOPB) + param_new |= MAX3100_ST; + else + param_new &= ~MAX3100_ST; + param_mask |= MAX3100_ST; + + if (cflag & PARENB) { + param_new |= MAX3100_PE; + parity |= MAX3100_PARITY_ON; + } else { + param_new &= ~MAX3100_PE; + parity &= ~MAX3100_PARITY_ON; + } + param_mask |= MAX3100_PE; + + if (cflag & PARODD) + parity |= MAX3100_PARITY_ODD; + else + parity &= ~MAX3100_PARITY_ODD; + + /* mask termios capabilities we don't support */ + cflag &= ~CMSPAR; + termios->c_cflag = cflag; + + s->port.ignore_status_mask = 0; + if (termios->c_iflag & IGNPAR) + s->port.ignore_status_mask |= + MAX3100_STATUS_PE | MAX3100_STATUS_FE | + MAX3100_STATUS_OE; + + timer_delete_sync(&s->timer); + uart_update_timeout(port, termios->c_cflag, baud); + + spin_lock(&s->conf_lock); + s->conf = (s->conf & ~param_mask) | (param_new & param_mask); + s->conf_commit = 1; + s->parity = parity; + spin_unlock(&s->conf_lock); + max3100_dowork(s); + + if (UART_ENABLE_MS(&s->port, termios->c_cflag)) + max3100_enable_ms(&s->port); +} + +static void max3100_shutdown(struct uart_port *port) +{ + struct max3100_port *s = to_max3100_port(port); + u16 rx; + + dev_dbg(&s->spi->dev, "%s\n", __func__); + + if (s->suspending) + return; + + s->force_end_work = 1; + + timer_delete_sync(&s->timer); + + if (s->workqueue) { + destroy_workqueue(s->workqueue); + s->workqueue = NULL; + } + if (port->irq) + free_irq(port->irq, s); + + /* set shutdown mode to save power */ + max3100_sr(s, MAX3100_WC | MAX3100_SHDN, &rx); +} + +static int max3100_startup(struct uart_port *port) +{ + struct max3100_port *s = to_max3100_port(port); + char b[12]; + int ret; + + dev_dbg(&s->spi->dev, "%s\n", __func__); + + s->conf = MAX3100_RM; + s->baud = port->uartclk / 16; + s->rx_enabled = 1; + + if (s->suspending) + return 0; + + s->force_end_work = 0; + s->parity = 0; + s->rts = 0; + + sprintf(b, "max3100-%d", s->minor); + s->workqueue = create_freezable_workqueue(b); + if (!s->workqueue) { + dev_warn(&s->spi->dev, "cannot create workqueue\n"); + return -EBUSY; + } + INIT_WORK(&s->work, max3100_work); + + ret = request_irq(port->irq, max3100_irq, IRQF_TRIGGER_FALLING, "max3100", s); + if (ret < 0) { + dev_warn(&s->spi->dev, "cannot allocate irq %d\n", port->irq); + port->irq = 0; + destroy_workqueue(s->workqueue); + s->workqueue = NULL; + return -EBUSY; + } + + s->conf_commit = 1; + max3100_dowork(s); + /* wait for clock to settle */ + msleep(50); + + max3100_enable_ms(&s->port); + + return 0; +} + +static const char *max3100_type(struct uart_port *port) +{ + struct max3100_port *s = to_max3100_port(port); + + dev_dbg(&s->spi->dev, "%s\n", __func__); + + return s->port.type == PORT_MAX3100 ? "MAX3100" : NULL; +} + +static void max3100_release_port(struct uart_port *port) +{ + struct max3100_port *s = to_max3100_port(port); + + dev_dbg(&s->spi->dev, "%s\n", __func__); +} + +static void max3100_config_port(struct uart_port *port, int flags) +{ + struct max3100_port *s = to_max3100_port(port); + + dev_dbg(&s->spi->dev, "%s\n", __func__); + + if (flags & UART_CONFIG_TYPE) + s->port.type = PORT_MAX3100; +} + +static int max3100_verify_port(struct uart_port *port, + struct serial_struct *ser) +{ + struct max3100_port *s = to_max3100_port(port); + int ret = -EINVAL; + + dev_dbg(&s->spi->dev, "%s\n", __func__); + + if (ser->type == PORT_UNKNOWN || ser->type == PORT_MAX3100) + ret = 0; + return ret; +} + +static void max3100_stop_tx(struct uart_port *port) +{ + struct max3100_port *s = to_max3100_port(port); + + dev_dbg(&s->spi->dev, "%s\n", __func__); +} + +static int max3100_request_port(struct uart_port *port) +{ + struct max3100_port *s = to_max3100_port(port); + + dev_dbg(&s->spi->dev, "%s\n", __func__); + return 0; +} + +static void max3100_break_ctl(struct uart_port *port, int break_state) +{ + struct max3100_port *s = to_max3100_port(port); + + dev_dbg(&s->spi->dev, "%s\n", __func__); +} + +static const struct uart_ops max3100_ops = { + .tx_empty = max3100_tx_empty, + .set_mctrl = max3100_set_mctrl, + .get_mctrl = max3100_get_mctrl, + .stop_tx = max3100_stop_tx, + .start_tx = max3100_start_tx, + .stop_rx = max3100_stop_rx, + .enable_ms = max3100_enable_ms, + .break_ctl = max3100_break_ctl, + .startup = max3100_startup, + .shutdown = max3100_shutdown, + .set_termios = max3100_set_termios, + .type = max3100_type, + .release_port = max3100_release_port, + .request_port = max3100_request_port, + .config_port = max3100_config_port, + .verify_port = max3100_verify_port, +}; + +static struct uart_driver max3100_uart_driver = { + .owner = THIS_MODULE, + .driver_name = "ttyMAX", + .dev_name = "ttyMAX", + .major = MAX3100_MAJOR, + .minor = MAX3100_MINOR, + .nr = MAX_MAX3100, +}; +static int uart_driver_registered; + +static int max3100_probe(struct spi_device *spi) +{ + struct device *dev = &spi->dev; + int i, retval; + u16 rx; + + mutex_lock(&max3100s_lock); + + if (!uart_driver_registered) { + retval = uart_register_driver(&max3100_uart_driver); + if (retval) { + mutex_unlock(&max3100s_lock); + return dev_err_probe(dev, retval, "Couldn't register max3100 uart driver\n"); + } + + uart_driver_registered = 1; + } + + for (i = 0; i < MAX_MAX3100; i++) + if (!max3100s[i]) + break; + if (i == MAX_MAX3100) { + mutex_unlock(&max3100s_lock); + return dev_err_probe(dev, -ENOSPC, "too many MAX3100 chips\n"); + } + + max3100s[i] = kzalloc_obj(struct max3100_port); + if (!max3100s[i]) { + mutex_unlock(&max3100s_lock); + return -ENOMEM; + } + max3100s[i]->spi = spi; + spin_lock_init(&max3100s[i]->conf_lock); + spi_set_drvdata(spi, max3100s[i]); + max3100s[i]->minor = i; + timer_setup(&max3100s[i]->timer, max3100_timeout, 0); + + dev_dbg(&spi->dev, "%s: adding port %d\n", __func__, i); + max3100s[i]->port.irq = spi->irq; + max3100s[i]->port.fifosize = 16; + max3100s[i]->port.ops = &max3100_ops; + max3100s[i]->port.flags = UPF_SKIP_TEST | UPF_BOOT_AUTOCONF; + max3100s[i]->port.line = i; + max3100s[i]->port.iotype = UPIO_BUS; + max3100s[i]->port.type = PORT_MAX3100; + max3100s[i]->port.dev = &spi->dev; + + /* Read clock frequency from a property, uart_add_one_port() will fail if it's not set */ + device_property_read_u32(dev, "clock-frequency", &max3100s[i]->port.uartclk); + + retval = uart_add_one_port(&max3100_uart_driver, &max3100s[i]->port); + if (retval < 0) + dev_err_probe(dev, retval, "uart_add_one_port failed for line %d\n", i); + + /* set shutdown mode to save power. Will be woken-up on open */ + max3100_sr(max3100s[i], MAX3100_WC | MAX3100_SHDN, &rx); + mutex_unlock(&max3100s_lock); + return 0; +} + +static void max3100_remove(struct spi_device *spi) +{ + struct max3100_port *s = spi_get_drvdata(spi); + int i; + + mutex_lock(&max3100s_lock); + + /* find out the index for the chip we are removing */ + for (i = 0; i < MAX_MAX3100; i++) + if (max3100s[i] == s) { + dev_dbg(&spi->dev, "%s: removing port %d\n", __func__, i); + uart_remove_one_port(&max3100_uart_driver, &max3100s[i]->port); + kfree(max3100s[i]); + max3100s[i] = NULL; + break; + } + + WARN_ON(i == MAX_MAX3100); + + /* check if this is the last chip we have */ + for (i = 0; i < MAX_MAX3100; i++) + if (max3100s[i]) { + mutex_unlock(&max3100s_lock); + return; + } + pr_debug("removing max3100 driver\n"); + uart_unregister_driver(&max3100_uart_driver); + uart_driver_registered = 0; + + mutex_unlock(&max3100s_lock); +} + +static int max3100_suspend(struct device *dev) +{ + struct max3100_port *s = dev_get_drvdata(dev); + u16 rx; + + dev_dbg(&s->spi->dev, "%s\n", __func__); + + disable_irq(s->port.irq); + + s->suspending = 1; + uart_suspend_port(&max3100_uart_driver, &s->port); + + /* no HW suspend, so do SW one */ + max3100_sr(s, MAX3100_WC | MAX3100_SHDN, &rx); + return 0; +} + +static int max3100_resume(struct device *dev) +{ + struct max3100_port *s = dev_get_drvdata(dev); + + dev_dbg(&s->spi->dev, "%s\n", __func__); + + uart_resume_port(&max3100_uart_driver, &s->port); + s->suspending = 0; + + enable_irq(s->port.irq); + + s->conf_commit = 1; + if (s->workqueue) + max3100_dowork(s); + + return 0; +} + +static DEFINE_SIMPLE_DEV_PM_OPS(max3100_pm_ops, max3100_suspend, max3100_resume); + +static const struct spi_device_id max3100_spi_id[] = { + { "max3100" }, + { } +}; +MODULE_DEVICE_TABLE(spi, max3100_spi_id); + +static const struct of_device_id max3100_of_match[] = { + { .compatible = "maxim,max3100" }, + { } +}; +MODULE_DEVICE_TABLE(of, max3100_of_match); + +static struct spi_driver max3100_driver = { + .driver = { + .name = "max3100", + .of_match_table = max3100_of_match, + .pm = pm_sleep_ptr(&max3100_pm_ops), + }, + .probe = max3100_probe, + .remove = max3100_remove, + .id_table = max3100_spi_id, +}; + +module_spi_driver(max3100_driver); + +MODULE_DESCRIPTION("MAX3100 driver"); +MODULE_AUTHOR("Christian Pellegrin <chripell@evolware.org>"); +MODULE_LICENSE("GPL"); |