diff options
| -rw-r--r-- | drivers/tty/serial/ifx6x60.c | 170 | ||||
| -rw-r--r-- | drivers/tty/serial/ifx6x60.h | 13 | ||||
| -rw-r--r-- | include/linux/spi/ifx_modem.h | 5 |
3 files changed, 65 insertions, 123 deletions
diff --git a/drivers/tty/serial/ifx6x60.c b/drivers/tty/serial/ifx6x60.c index 32a0ccef9339..7d16fe41932f 100644 --- a/drivers/tty/serial/ifx6x60.c +++ b/drivers/tty/serial/ifx6x60.c @@ -39,7 +39,7 @@ #include <linux/fs.h> #include <linux/ip.h> #include <linux/dmapool.h> -#include <linux/gpio.h> +#include <linux/gpio/consumer.h> #include <linux/sched.h> #include <linux/time.h> #include <linux/wait.h> @@ -61,7 +61,6 @@ #define IFX_SPI_HEADER_F (-2) #define PO_POST_DELAY 200 -#define IFX_MDM_RST_PMU 4 /* forward reference */ static void ifx_spi_handle_srdy(struct ifx_spi_device *ifx_dev); @@ -81,7 +80,7 @@ static struct notifier_block ifx_modem_reboot_notifier_block = { static int ifx_modem_power_off(struct ifx_spi_device *ifx_dev) { - gpio_set_value(IFX_MDM_RST_PMU, 1); + gpiod_set_value(ifx_dev->gpio.pmu_reset, 1); msleep(PO_POST_DELAY); return 0; @@ -107,7 +106,7 @@ static int ifx_modem_reboot_callback(struct notifier_block *nfb, */ static inline void mrdy_set_high(struct ifx_spi_device *ifx) { - gpio_set_value(ifx->gpio.mrdy, 1); + gpiod_set_value(ifx->gpio.mrdy, 1); } /** @@ -117,7 +116,7 @@ static inline void mrdy_set_high(struct ifx_spi_device *ifx) */ static inline void mrdy_set_low(struct ifx_spi_device *ifx) { - gpio_set_value(ifx->gpio.mrdy, 0); + gpiod_set_value(ifx->gpio.mrdy, 0); } /** @@ -244,7 +243,7 @@ static inline void swap_buf_32(unsigned char *buf, int len, void *end) */ static void mrdy_assert(struct ifx_spi_device *ifx_dev) { - int val = gpio_get_value(ifx_dev->gpio.srdy); + int val = gpiod_get_value(ifx_dev->gpio.srdy); if (!val) { if (!test_and_set_bit(IFX_SPI_STATE_TIMER_PENDING, &ifx_dev->flags)) { @@ -691,7 +690,7 @@ complete_exit: clear_bit(IFX_SPI_STATE_IO_IN_PROGRESS, &(ifx_dev->flags)); queue_length = kfifo_len(&ifx_dev->tx_fifo); - srdy = gpio_get_value(ifx_dev->gpio.srdy); + srdy = gpiod_get_value(ifx_dev->gpio.srdy); if (!srdy) ifx_spi_power_state_clear(ifx_dev, IFX_SPI_POWER_SRDY); @@ -898,7 +897,7 @@ static irqreturn_t ifx_spi_srdy_interrupt(int irq, void *dev) static irqreturn_t ifx_spi_reset_interrupt(int irq, void *dev) { struct ifx_spi_device *ifx_dev = dev; - int val = gpio_get_value(ifx_dev->gpio.reset_out); + int val = gpiod_get_value(ifx_dev->gpio.reset_out); int solreset = test_bit(MR_START, &ifx_dev->mdm_reset_state); if (val == 0) { @@ -954,14 +953,14 @@ static int ifx_spi_reset(struct ifx_spi_device *ifx_dev) * to reset properly */ set_bit(MR_START, &ifx_dev->mdm_reset_state); - gpio_set_value(ifx_dev->gpio.po, 0); - gpio_set_value(ifx_dev->gpio.reset, 0); + gpiod_set_value(ifx_dev->gpio.po, 0); + gpiod_set_value(ifx_dev->gpio.reset, 0); msleep(25); - gpio_set_value(ifx_dev->gpio.reset, 1); + gpiod_set_value(ifx_dev->gpio.reset, 1); msleep(1); - gpio_set_value(ifx_dev->gpio.po, 1); + gpiod_set_value(ifx_dev->gpio.po, 1); msleep(1); - gpio_set_value(ifx_dev->gpio.po, 0); + gpiod_set_value(ifx_dev->gpio.po, 0); ret = wait_event_timeout(ifx_dev->mdm_reset_wait, test_bit(MR_COMPLETE, &ifx_dev->mdm_reset_state), @@ -1080,107 +1079,68 @@ static int ifx_spi_spi_probe(struct spi_device *spi) goto error_ret; } - ifx_dev->gpio.reset = pl_data->rst_pmu; - ifx_dev->gpio.po = pl_data->pwr_on; - ifx_dev->gpio.mrdy = pl_data->mrdy; - ifx_dev->gpio.srdy = pl_data->srdy; - ifx_dev->gpio.reset_out = pl_data->rst_out; - - dev_info(dev, "gpios %d, %d, %d, %d, %d", - ifx_dev->gpio.reset, ifx_dev->gpio.po, ifx_dev->gpio.mrdy, - ifx_dev->gpio.srdy, ifx_dev->gpio.reset_out); - - /* Configure gpios */ - ret = gpio_request(ifx_dev->gpio.reset, "ifxModem"); - if (ret < 0) { - dev_err(dev, "Unable to allocate GPIO%d (RESET)", - ifx_dev->gpio.reset); + ifx_dev->gpio.reset = devm_gpiod_get(dev, "reset", GPIOD_OUT_LOW); + if (IS_ERR(ifx_dev->gpio.reset)) { + dev_err(dev, "could not obtain reset GPIO\n"); + ret = PTR_ERR(ifx_dev->gpio.reset); goto error_ret; } - ret += gpio_direction_output(ifx_dev->gpio.reset, 0); - ret += gpio_export(ifx_dev->gpio.reset, 1); - if (ret) { - dev_err(dev, "Unable to configure GPIO%d (RESET)", - ifx_dev->gpio.reset); - ret = -EBUSY; - goto error_ret2; - } - - ret = gpio_request(ifx_dev->gpio.po, "ifxModem"); - ret += gpio_direction_output(ifx_dev->gpio.po, 0); - ret += gpio_export(ifx_dev->gpio.po, 1); - if (ret) { - dev_err(dev, "Unable to configure GPIO%d (ON)", - ifx_dev->gpio.po); - ret = -EBUSY; - goto error_ret3; - } - - ret = gpio_request(ifx_dev->gpio.mrdy, "ifxModem"); - if (ret < 0) { - dev_err(dev, "Unable to allocate GPIO%d (MRDY)", - ifx_dev->gpio.mrdy); - goto error_ret3; - } - ret += gpio_export(ifx_dev->gpio.mrdy, 1); - ret += gpio_direction_output(ifx_dev->gpio.mrdy, 0); - if (ret) { - dev_err(dev, "Unable to configure GPIO%d (MRDY)", - ifx_dev->gpio.mrdy); - ret = -EBUSY; - goto error_ret4; + gpiod_set_consumer_name(ifx_dev->gpio.reset, "ifxModem reset"); + ifx_dev->gpio.po = devm_gpiod_get(dev, "power", GPIOD_OUT_LOW); + if (IS_ERR(ifx_dev->gpio.po)) { + dev_err(dev, "could not obtain power GPIO\n"); + ret = PTR_ERR(ifx_dev->gpio.po); + goto error_ret; } - - ret = gpio_request(ifx_dev->gpio.srdy, "ifxModem"); - if (ret < 0) { - dev_err(dev, "Unable to allocate GPIO%d (SRDY)", - ifx_dev->gpio.srdy); - ret = -EBUSY; - goto error_ret4; + gpiod_set_consumer_name(ifx_dev->gpio.po, "ifxModem power"); + ifx_dev->gpio.mrdy = devm_gpiod_get(dev, "mrdy", GPIOD_OUT_LOW); + if (IS_ERR(ifx_dev->gpio.mrdy)) { + dev_err(dev, "could not obtain mrdy GPIO\n"); + ret = PTR_ERR(ifx_dev->gpio.mrdy); + goto error_ret; } - ret += gpio_export(ifx_dev->gpio.srdy, 1); - ret += gpio_direction_input(ifx_dev->gpio.srdy); - if (ret) { - dev_err(dev, "Unable to configure GPIO%d (SRDY)", - ifx_dev->gpio.srdy); - ret = -EBUSY; - goto error_ret5; + gpiod_set_consumer_name(ifx_dev->gpio.mrdy, "ifxModem mrdy"); + ifx_dev->gpio.srdy = devm_gpiod_get(dev, "srdy", GPIOD_IN); + if (IS_ERR(ifx_dev->gpio.srdy)) { + dev_err(dev, "could not obtain srdy GPIO\n"); + ret = PTR_ERR(ifx_dev->gpio.srdy); + goto error_ret; } - - ret = gpio_request(ifx_dev->gpio.reset_out, "ifxModem"); - if (ret < 0) { - dev_err(dev, "Unable to allocate GPIO%d (RESET_OUT)", - ifx_dev->gpio.reset_out); - goto error_ret5; + gpiod_set_consumer_name(ifx_dev->gpio.srdy, "ifxModem srdy"); + ifx_dev->gpio.reset_out = devm_gpiod_get(dev, "rst_out", GPIOD_IN); + if (IS_ERR(ifx_dev->gpio.reset_out)) { + dev_err(dev, "could not obtain rst_out GPIO\n"); + ret = PTR_ERR(ifx_dev->gpio.reset_out); + goto error_ret; } - ret += gpio_export(ifx_dev->gpio.reset_out, 1); - ret += gpio_direction_input(ifx_dev->gpio.reset_out); - if (ret) { - dev_err(dev, "Unable to configure GPIO%d (RESET_OUT)", - ifx_dev->gpio.reset_out); - ret = -EBUSY; - goto error_ret6; + gpiod_set_consumer_name(ifx_dev->gpio.reset_out, "ifxModem reset out"); + ifx_dev->gpio.pmu_reset = devm_gpiod_get(dev, "pmu_reset", GPIOD_ASIS); + if (IS_ERR(ifx_dev->gpio.pmu_reset)) { + dev_err(dev, "could not obtain pmu_reset GPIO\n"); + ret = PTR_ERR(ifx_dev->gpio.pmu_reset); + goto error_ret; } + gpiod_set_consumer_name(ifx_dev->gpio.pmu_reset, "ifxModem PMU reset"); - ret = request_irq(gpio_to_irq(ifx_dev->gpio.reset_out), + ret = request_irq(gpiod_to_irq(ifx_dev->gpio.reset_out), ifx_spi_reset_interrupt, IRQF_TRIGGER_RISING|IRQF_TRIGGER_FALLING, DRVNAME, ifx_dev); if (ret) { dev_err(dev, "Unable to get irq %x\n", - gpio_to_irq(ifx_dev->gpio.reset_out)); - goto error_ret6; + gpiod_to_irq(ifx_dev->gpio.reset_out)); + goto error_ret; } ret = ifx_spi_reset(ifx_dev); - ret = request_irq(gpio_to_irq(ifx_dev->gpio.srdy), + ret = request_irq(gpiod_to_irq(ifx_dev->gpio.srdy), ifx_spi_srdy_interrupt, IRQF_TRIGGER_RISING, DRVNAME, ifx_dev); if (ret) { dev_err(dev, "Unable to get irq %x", - gpio_to_irq(ifx_dev->gpio.srdy)); - goto error_ret7; + gpiod_to_irq(ifx_dev->gpio.srdy)); + goto error_ret2; } /* set pm runtime power state and register with power system */ @@ -1191,7 +1151,7 @@ static int ifx_spi_spi_probe(struct spi_device *spi) /* no outgoing tty open at this point, this just satisfies the * modem's read and should reset communication properly */ - srdy = gpio_get_value(ifx_dev->gpio.srdy); + srdy = gpiod_get_value(ifx_dev->gpio.srdy); if (srdy) { mrdy_assert(ifx_dev); @@ -1200,18 +1160,8 @@ static int ifx_spi_spi_probe(struct spi_device *spi) mrdy_set_low(ifx_dev); return 0; -error_ret7: - free_irq(gpio_to_irq(ifx_dev->gpio.reset_out), ifx_dev); -error_ret6: - gpio_free(ifx_dev->gpio.srdy); -error_ret5: - gpio_free(ifx_dev->gpio.mrdy); -error_ret4: - gpio_free(ifx_dev->gpio.reset); -error_ret3: - gpio_free(ifx_dev->gpio.po); error_ret2: - gpio_free(ifx_dev->gpio.reset_out); + free_irq(gpiod_to_irq(ifx_dev->gpio.reset_out), ifx_dev); error_ret: ifx_spi_free_device(ifx_dev); saved_ifx_dev = NULL; @@ -1235,14 +1185,8 @@ static int ifx_spi_spi_remove(struct spi_device *spi) pm_runtime_disable(&spi->dev); /* free irq */ - free_irq(gpio_to_irq(ifx_dev->gpio.reset_out), ifx_dev); - free_irq(gpio_to_irq(ifx_dev->gpio.srdy), ifx_dev); - - gpio_free(ifx_dev->gpio.srdy); - gpio_free(ifx_dev->gpio.mrdy); - gpio_free(ifx_dev->gpio.reset); - gpio_free(ifx_dev->gpio.po); - gpio_free(ifx_dev->gpio.reset_out); + free_irq(gpiod_to_irq(ifx_dev->gpio.reset_out), ifx_dev); + free_irq(gpiod_to_irq(ifx_dev->gpio.srdy), ifx_dev); /* free allocations */ ifx_spi_free_device(ifx_dev); diff --git a/drivers/tty/serial/ifx6x60.h b/drivers/tty/serial/ifx6x60.h index cacca5be7390..ecb841d928a7 100644 --- a/drivers/tty/serial/ifx6x60.h +++ b/drivers/tty/serial/ifx6x60.h @@ -10,6 +10,8 @@ #ifndef _IFX6X60_H #define _IFX6X60_H +struct gpio_desc; + #define DRVNAME "ifx6x60" #define TTYNAME "ttyIFX" @@ -94,11 +96,12 @@ struct ifx_spi_device { struct { /* gpio lines */ - unsigned short srdy; /* slave-ready gpio */ - unsigned short mrdy; /* master-ready gpio */ - unsigned short reset; /* modem-reset gpio */ - unsigned short po; /* modem-on gpio */ - unsigned short reset_out; /* modem-in-reset gpio */ + struct gpio_desc *srdy; /* slave-ready gpio */ + struct gpio_desc *mrdy; /* master-ready gpio */ + struct gpio_desc *reset; /* modem-reset gpio */ + struct gpio_desc *po; /* modem-on gpio */ + struct gpio_desc *reset_out; /* modem-in-reset gpio */ + struct gpio_desc *pmu_reset; /* PMU reset gpio */ /* state/stats */ int unack_srdy_int_nb; } gpio; diff --git a/include/linux/spi/ifx_modem.h b/include/linux/spi/ifx_modem.h index 694268c78d5d..6d19b09139d0 100644 --- a/include/linux/spi/ifx_modem.h +++ b/include/linux/spi/ifx_modem.h @@ -3,12 +3,7 @@ #define LINUX_IFX_MODEM_H struct ifx_modem_platform_data { - unsigned short rst_out; /* modem reset out */ - unsigned short pwr_on; /* power on */ - unsigned short rst_pmu; /* reset modem */ unsigned short tx_pwr; /* modem power threshold */ - unsigned short srdy; /* SRDY */ - unsigned short mrdy; /* MRDY */ unsigned char modem_type; /* Modem type */ unsigned long max_hz; /* max SPI frequency */ unsigned short use_dma:1; /* spi protocol driver supplies |