diff options
Diffstat (limited to 'drivers/net/can/spi/hi311x.c')
-rw-r--r-- | drivers/net/can/spi/hi311x.c | 115 |
1 files changed, 56 insertions, 59 deletions
diff --git a/drivers/net/can/spi/hi311x.c b/drivers/net/can/spi/hi311x.c index 89d9c986a229..e1b8533a602e 100644 --- a/drivers/net/can/spi/hi311x.c +++ b/drivers/net/can/spi/hi311x.c @@ -16,20 +16,20 @@ #include <linux/can/core.h> #include <linux/can/dev.h> -#include <linux/can/led.h> #include <linux/clk.h> #include <linux/completion.h> #include <linux/delay.h> #include <linux/device.h> +#include <linux/ethtool.h> #include <linux/freezer.h> #include <linux/interrupt.h> #include <linux/io.h> #include <linux/kernel.h> +#include <linux/mod_devicetable.h> #include <linux/module.h> #include <linux/netdevice.h> -#include <linux/of.h> -#include <linux/of_device.h> #include <linux/platform_device.h> +#include <linux/property.h> #include <linux/regulator/consumer.h> #include <linux/slab.h> #include <linux/spi/spi.h> @@ -153,7 +153,6 @@ struct hi3110_priv { u8 *spi_rx_buf; struct sk_buff *tx_skb; - int tx_len; struct workqueue_struct *wq; struct work_struct tx_work; @@ -166,6 +165,8 @@ struct hi3110_priv { #define HI3110_AFTER_SUSPEND_POWER 4 #define HI3110_AFTER_SUSPEND_RESTART 8 int restart_tx; + bool tx_busy; + struct regulator *power; struct regulator *transceiver; struct clk *clk; @@ -175,13 +176,13 @@ static void hi3110_clean(struct net_device *net) { struct hi3110_priv *priv = netdev_priv(net); - if (priv->tx_skb || priv->tx_len) + if (priv->tx_skb || priv->tx_busy) net->stats.tx_errors++; dev_kfree_skb(priv->tx_skb); - if (priv->tx_len) + if (priv->tx_busy) can_free_echo_skb(priv->net, 0, NULL); priv->tx_skb = NULL; - priv->tx_len = 0; + priv->tx_busy = false; } /* Note about handling of error return of hi3110_spi_trans: accessing @@ -343,18 +344,17 @@ static void hi3110_hw_rx(struct spi_device *spi) /* Data length */ frame->len = can_cc_dlc2len(buf[HI3110_FIFO_WOTIME_DLC_OFF] & 0x0F); - if (buf[HI3110_FIFO_WOTIME_ID_OFF + 3] & HI3110_FIFO_WOTIME_ID_RTR) + if (buf[HI3110_FIFO_WOTIME_ID_OFF + 3] & HI3110_FIFO_WOTIME_ID_RTR) { frame->can_id |= CAN_RTR_FLAG; - else + } else { memcpy(frame->data, buf + HI3110_FIFO_WOTIME_DAT_OFF, frame->len); + priv->net->stats.rx_bytes += frame->len; + } priv->net->stats.rx_packets++; - priv->net->stats.rx_bytes += frame->len; - - can_led_event(priv->net, CAN_LED_EVENT_RX); - netif_rx_ni(skb); + netif_rx(skb); } static void hi3110_hw_sleep(struct spi_device *spi) @@ -368,12 +368,12 @@ static netdev_tx_t hi3110_hard_start_xmit(struct sk_buff *skb, struct hi3110_priv *priv = netdev_priv(net); struct spi_device *spi = priv->spi; - if (priv->tx_skb || priv->tx_len) { + if (priv->tx_skb || priv->tx_busy) { dev_err(&spi->dev, "hard_xmit called while tx busy\n"); return NETDEV_TX_BUSY; } - if (can_dropped_invalid_skb(net, skb)) + if (can_dev_dropped_skb(net, skb)) return NETDEV_TX_OK; netif_stop_queue(net); @@ -565,8 +565,6 @@ static int hi3110_stop(struct net_device *net) mutex_unlock(&priv->hi3110_lock); - can_led_event(net, CAN_LED_EVENT_STOP); - return 0; } @@ -585,7 +583,7 @@ static void hi3110_tx_work_handler(struct work_struct *ws) } else { frame = (struct can_frame *)priv->tx_skb->data; hi3110_hw_tx(spi, frame); - priv->tx_len = 1 + frame->len; + priv->tx_busy = true; can_put_echo_skb(priv->tx_skb, net, 0, 0); priv->tx_skb = NULL; } @@ -670,12 +668,10 @@ static irqreturn_t hi3110_can_ist(int irq, void *dev_id) txerr = hi3110_read(spi, HI3110_READ_TEC); rxerr = hi3110_read(spi, HI3110_READ_REC); - cf->data[6] = txerr; - cf->data[7] = rxerr; tx_state = txerr >= rxerr ? new_state : 0; rx_state = txerr <= rxerr ? new_state : 0; can_change_state(net, cf, tx_state, rx_state); - netif_rx_ni(skb); + netif_rx(skb); if (new_state == CAN_STATE_BUS_OFF) { can_bus_off(net); @@ -684,6 +680,10 @@ static irqreturn_t hi3110_can_ist(int irq, void *dev_id) hi3110_hw_sleep(spi); break; } + } else { + cf->can_id |= CAN_ERR_CNT; + cf->data[6] = txerr; + cf->data[7] = rxerr; } } @@ -716,18 +716,14 @@ static irqreturn_t hi3110_can_ist(int irq, void *dev_id) cf->data[6] = hi3110_read(spi, HI3110_READ_TEC); cf->data[7] = hi3110_read(spi, HI3110_READ_REC); netdev_dbg(priv->net, "Bus Error\n"); - netif_rx_ni(skb); + netif_rx(skb); } } - if (priv->tx_len && statf & HI3110_STAT_TXMTY) { + if (priv->tx_busy && statf & HI3110_STAT_TXMTY) { net->stats.tx_packets++; - net->stats.tx_bytes += priv->tx_len - 1; - can_led_event(net, CAN_LED_EVENT_TX); - if (priv->tx_len) { - can_get_echo_skb(net, 0, NULL); - priv->tx_len = 0; - } + net->stats.tx_bytes += can_get_echo_skb(net, 0, NULL); + priv->tx_busy = false; netif_wake_queue(net); } @@ -754,7 +750,7 @@ static int hi3110_open(struct net_device *net) priv->force_quit = 0; priv->tx_skb = NULL; - priv->tx_len = 0; + priv->tx_busy = false; ret = request_threaded_irq(spi->irq, NULL, hi3110_can_ist, flags, DEVICE_NAME, priv); @@ -784,7 +780,6 @@ static int hi3110_open(struct net_device *net) if (ret) goto out_free_wq; - can_led_event(net, CAN_LED_EVENT_OPEN); netif_wake_queue(net); mutex_unlock(&priv->hi3110_lock); @@ -808,6 +803,10 @@ static const struct net_device_ops hi3110_netdev_ops = { .ndo_start_xmit = hi3110_hard_start_xmit, }; +static const struct ethtool_ops hi3110_ethtool_ops = { + .get_ts_info = ethtool_op_get_ts_info, +}; + static const struct of_device_id hi3110_of_match[] = { { .compatible = "holt,hi3110", @@ -828,19 +827,25 @@ MODULE_DEVICE_TABLE(spi, hi3110_id_table); static int hi3110_can_probe(struct spi_device *spi) { - const struct of_device_id *of_id = of_match_device(hi3110_of_match, - &spi->dev); + struct device *dev = &spi->dev; struct net_device *net; struct hi3110_priv *priv; + const void *match; struct clk *clk; - int freq, ret; + u32 freq; + int ret; - clk = devm_clk_get(&spi->dev, NULL); - if (IS_ERR(clk)) { - dev_err(&spi->dev, "no CAN clock source defined\n"); - return PTR_ERR(clk); + clk = devm_clk_get_optional(&spi->dev, NULL); + if (IS_ERR(clk)) + return dev_err_probe(dev, PTR_ERR(clk), "no CAN clock source defined\n"); + + if (clk) { + freq = clk_get_rate(clk); + } else { + ret = device_property_read_u32(dev, "clock-frequency", &freq); + if (ret) + return dev_err_probe(dev, ret, "Failed to get clock-frequency!\n"); } - freq = clk_get_rate(clk); /* Sanity check */ if (freq > 40000000) @@ -851,13 +856,12 @@ static int hi3110_can_probe(struct spi_device *spi) if (!net) return -ENOMEM; - if (!IS_ERR(clk)) { - ret = clk_prepare_enable(clk); - if (ret) - goto out_free; - } + ret = clk_prepare_enable(clk); + if (ret) + goto out_free; net->netdev_ops = &hi3110_netdev_ops; + net->ethtool_ops = &hi3110_ethtool_ops; net->flags |= IFF_ECHO; priv = netdev_priv(net); @@ -870,8 +874,9 @@ static int hi3110_can_probe(struct spi_device *spi) CAN_CTRLMODE_LISTENONLY | CAN_CTRLMODE_BERR_REPORTING; - if (of_id) - priv->model = (enum hi3110_model)(uintptr_t)of_id->data; + match = device_get_match_data(dev); + if (match) + priv->model = (enum hi3110_model)(uintptr_t)match; else priv->model = spi_get_device_id(spi)->driver_data; priv->net = net; @@ -918,9 +923,7 @@ static int hi3110_can_probe(struct spi_device *spi) ret = hi3110_hw_probe(spi); if (ret) { - if (ret == -ENODEV) - dev_err(&spi->dev, "Cannot initialize %x. Wrong wiring?\n", - priv->model); + dev_err_probe(dev, ret, "Cannot initialize %x. Wrong wiring?\n", priv->model); goto error_probe; } hi3110_hw_sleep(spi); @@ -929,7 +932,6 @@ static int hi3110_can_probe(struct spi_device *spi) if (ret) goto error_probe; - devm_can_led_init(net); netdev_info(net, "%x successfully initialized.\n", priv->model); return 0; @@ -938,17 +940,15 @@ static int hi3110_can_probe(struct spi_device *spi) hi3110_power_enable(priv->power, 0); out_clk: - if (!IS_ERR(clk)) - clk_disable_unprepare(clk); + clk_disable_unprepare(clk); out_free: free_candev(net); - dev_err(&spi->dev, "Probe failed, err=%d\n", -ret); - return ret; + return dev_err_probe(dev, ret, "Probe failed\n"); } -static int hi3110_can_remove(struct spi_device *spi) +static void hi3110_can_remove(struct spi_device *spi) { struct hi3110_priv *priv = spi_get_drvdata(spi); struct net_device *net = priv->net; @@ -957,12 +957,9 @@ static int hi3110_can_remove(struct spi_device *spi) hi3110_power_enable(priv->power, 0); - if (!IS_ERR(priv->clk)) - clk_disable_unprepare(priv->clk); + clk_disable_unprepare(priv->clk); free_candev(net); - - return 0; } static int __maybe_unused hi3110_can_suspend(struct device *dev) |