diff options
Diffstat (limited to 'drivers/rpmsg')
| -rw-r--r-- | drivers/rpmsg/qcom_glink_native.c | 48 | ||||
| -rw-r--r-- | drivers/rpmsg/qcom_glink_native.h | 3 | ||||
| -rw-r--r-- | drivers/rpmsg/qcom_glink_rpm.c | 50 | ||||
| -rw-r--r-- | drivers/rpmsg/qcom_glink_smem.c | 55 |
4 files changed, 107 insertions, 49 deletions
diff --git a/drivers/rpmsg/qcom_glink_native.c b/drivers/rpmsg/qcom_glink_native.c index 5fd8b70271b7..8dd8cf033b2d 100644 --- a/drivers/rpmsg/qcom_glink_native.c +++ b/drivers/rpmsg/qcom_glink_native.c @@ -11,7 +11,6 @@ #include <linux/module.h> #include <linux/of.h> #include <linux/of_address.h> -#include <linux/of_irq.h> #include <linux/platform_device.h> #include <linux/regmap.h> #include <linux/rpmsg.h> @@ -78,11 +77,8 @@ struct glink_core_rx_intent { /** * struct qcom_glink - driver context, relates to one remote subsystem * @dev: reference to the associated struct device - * @mbox_client: mailbox client - * @mbox_chan: mailbox channel * @rx_pipe: pipe object for receive FIFO * @tx_pipe: pipe object for transmit FIFO - * @irq: IRQ for signaling incoming events * @rx_work: worker for handling received control messages * @rx_lock: protects the @rx_queue * @rx_queue: queue of received control messages to be processed in @rx_work @@ -98,14 +94,9 @@ struct glink_core_rx_intent { struct qcom_glink { struct device *dev; - struct mbox_client mbox_client; - struct mbox_chan *mbox_chan; - struct qcom_glink_pipe *rx_pipe; struct qcom_glink_pipe *tx_pipe; - int irq; - struct work_struct rx_work; spinlock_t rx_lock; struct list_head rx_queue; @@ -305,8 +296,7 @@ static void qcom_glink_tx_write(struct qcom_glink *glink, static void qcom_glink_tx_kick(struct qcom_glink *glink) { - mbox_send_message(glink->mbox_chan, NULL); - mbox_client_txdone(glink->mbox_chan, 0); + glink->tx_pipe->kick(glink->tx_pipe); } static void qcom_glink_send_read_notify(struct qcom_glink *glink) @@ -1004,9 +994,8 @@ static int qcom_glink_rx_open_ack(struct qcom_glink *glink, unsigned int lcid) return 0; } -static irqreturn_t qcom_glink_native_intr(int irq, void *data) +void qcom_glink_native_rx(struct qcom_glink *glink) { - struct qcom_glink *glink = data; struct glink_msg msg; unsigned int param1; unsigned int param2; @@ -1075,9 +1064,8 @@ static irqreturn_t qcom_glink_native_intr(int irq, void *data) if (ret) break; } - - return IRQ_HANDLED; } +EXPORT_SYMBOL(qcom_glink_native_rx); /* Locally initiated rpmsg_create_ept */ static struct glink_channel *qcom_glink_create_local(struct qcom_glink *glink, @@ -1723,7 +1711,6 @@ struct qcom_glink *qcom_glink_native_probe(struct device *dev, struct qcom_glink_pipe *tx, bool intentless) { - int irq; int ret; struct qcom_glink *glink; @@ -1754,27 +1741,6 @@ struct qcom_glink *qcom_glink_native_probe(struct device *dev, if (ret) dev_err(dev, "failed to add groups\n"); - glink->mbox_client.dev = dev; - glink->mbox_client.knows_txdone = true; - glink->mbox_chan = mbox_request_channel(&glink->mbox_client, 0); - if (IS_ERR(glink->mbox_chan)) { - if (PTR_ERR(glink->mbox_chan) != -EPROBE_DEFER) - dev_err(dev, "failed to acquire IPC channel\n"); - return ERR_CAST(glink->mbox_chan); - } - - irq = of_irq_get(dev->of_node, 0); - ret = devm_request_irq(dev, irq, - qcom_glink_native_intr, - IRQF_NO_SUSPEND | IRQF_SHARED, - "glink-native", glink); - if (ret) { - dev_err(dev, "failed to request IRQ\n"); - return ERR_PTR(ret); - } - - glink->irq = irq; - ret = qcom_glink_send_version(glink); if (ret) return ERR_PTR(ret); @@ -1800,7 +1766,6 @@ void qcom_glink_native_remove(struct qcom_glink *glink) int cid; int ret; - disable_irq(glink->irq); qcom_glink_cancel_rx_work(glink); ret = device_for_each_child(glink->dev, NULL, qcom_glink_remove_device); @@ -1817,15 +1782,8 @@ void qcom_glink_native_remove(struct qcom_glink *glink) idr_destroy(&glink->lcids); idr_destroy(&glink->rcids); - mbox_free_channel(glink->mbox_chan); } EXPORT_SYMBOL_GPL(qcom_glink_native_remove); -void qcom_glink_native_unregister(struct qcom_glink *glink) -{ - device_unregister(glink->dev); -} -EXPORT_SYMBOL_GPL(qcom_glink_native_unregister); - MODULE_DESCRIPTION("Qualcomm GLINK driver"); MODULE_LICENSE("GPL v2"); diff --git a/drivers/rpmsg/qcom_glink_native.h b/drivers/rpmsg/qcom_glink_native.h index e9a8671616c7..9462b37eccee 100644 --- a/drivers/rpmsg/qcom_glink_native.h +++ b/drivers/rpmsg/qcom_glink_native.h @@ -24,6 +24,7 @@ struct qcom_glink_pipe { void (*write)(struct qcom_glink_pipe *glink_pipe, const void *hdr, size_t hlen, const void *data, size_t dlen); + void (*kick)(struct qcom_glink_pipe *glink_pipe); }; struct device; @@ -35,6 +36,6 @@ struct qcom_glink *qcom_glink_native_probe(struct device *dev, struct qcom_glink_pipe *tx, bool intentless); void qcom_glink_native_remove(struct qcom_glink *glink); +void qcom_glink_native_rx(struct qcom_glink *glink); -void qcom_glink_native_unregister(struct qcom_glink *glink); #endif diff --git a/drivers/rpmsg/qcom_glink_rpm.c b/drivers/rpmsg/qcom_glink_rpm.c index 6443843df6ca..5179f834a10f 100644 --- a/drivers/rpmsg/qcom_glink_rpm.c +++ b/drivers/rpmsg/qcom_glink_rpm.c @@ -11,6 +11,7 @@ #include <linux/module.h> #include <linux/of.h> #include <linux/of_address.h> +#include <linux/of_irq.h> #include <linux/platform_device.h> #include <linux/regmap.h> #include <linux/rpmsg.h> @@ -56,6 +57,11 @@ struct glink_rpm_pipe { struct glink_rpm { struct qcom_glink *glink; + int irq; + + struct mbox_client mbox_client; + struct mbox_chan *mbox_chan; + struct glink_rpm_pipe rx_pipe; struct glink_rpm_pipe tx_pipe; }; @@ -186,6 +192,24 @@ static void glink_rpm_tx_write(struct qcom_glink_pipe *glink_pipe, writel(head, pipe->head); } +static void glink_rpm_tx_kick(struct qcom_glink_pipe *glink_pipe) +{ + struct glink_rpm_pipe *pipe = to_rpm_pipe(glink_pipe); + struct glink_rpm *rpm = container_of(pipe, struct glink_rpm, tx_pipe); + + mbox_send_message(rpm->mbox_chan, NULL); + mbox_client_txdone(rpm->mbox_chan, 0); +} + +static irqreturn_t qcom_glink_rpm_intr(int irq, void *data) +{ + struct glink_rpm *rpm = data; + + qcom_glink_native_rx(rpm->glink); + + return IRQ_HANDLED; +} + static int glink_rpm_parse_toc(struct device *dev, void __iomem *msg_ram, size_t msg_ram_size, @@ -292,12 +316,28 @@ static int glink_rpm_probe(struct platform_device *pdev) if (ret) return ret; + rpm->irq = of_irq_get(dev->of_node, 0); + ret = devm_request_irq(dev, rpm->irq, qcom_glink_rpm_intr, + IRQF_NO_SUSPEND | IRQF_NO_AUTOEN, + "glink-rpm", rpm); + if (ret) { + dev_err(dev, "failed to request IRQ\n"); + return ret; + } + + rpm->mbox_client.dev = dev; + rpm->mbox_client.knows_txdone = true; + rpm->mbox_chan = mbox_request_channel(&rpm->mbox_client, 0); + if (IS_ERR(rpm->mbox_chan)) + return dev_err_probe(dev, PTR_ERR(rpm->mbox_chan), "failed to acquire IPC channel\n"); + /* Pipe specific accessors */ rpm->rx_pipe.native.avail = glink_rpm_rx_avail; rpm->rx_pipe.native.peak = glink_rpm_rx_peak; rpm->rx_pipe.native.advance = glink_rpm_rx_advance; rpm->tx_pipe.native.avail = glink_rpm_tx_avail; rpm->tx_pipe.native.write = glink_rpm_tx_write; + rpm->tx_pipe.native.kick = glink_rpm_tx_kick; writel(0, rpm->tx_pipe.head); writel(0, rpm->rx_pipe.tail); @@ -307,13 +347,17 @@ static int glink_rpm_probe(struct platform_device *pdev) &rpm->rx_pipe.native, &rpm->tx_pipe.native, true); - if (IS_ERR(glink)) + if (IS_ERR(glink)) { + mbox_free_channel(rpm->mbox_chan); return PTR_ERR(glink); + } rpm->glink = glink; platform_set_drvdata(pdev, rpm); + enable_irq(rpm->irq); + return 0; } @@ -322,8 +366,12 @@ static int glink_rpm_remove(struct platform_device *pdev) struct glink_rpm *rpm = platform_get_drvdata(pdev); struct qcom_glink *glink = rpm->glink; + disable_irq(rpm->irq); + qcom_glink_native_remove(glink); + mbox_free_channel(rpm->mbox_chan); + return 0; } diff --git a/drivers/rpmsg/qcom_glink_smem.c b/drivers/rpmsg/qcom_glink_smem.c index a9c477df4d68..05b4fe0a7387 100644 --- a/drivers/rpmsg/qcom_glink_smem.c +++ b/drivers/rpmsg/qcom_glink_smem.c @@ -7,8 +7,10 @@ #include <linux/module.h> #include <linux/of.h> #include <linux/of_address.h> +#include <linux/of_irq.h> #include <linux/interrupt.h> #include <linux/platform_device.h> +#include <linux/mailbox_client.h> #include <linux/mfd/syscon.h> #include <linux/slab.h> #include <linux/rpmsg.h> @@ -36,8 +38,12 @@ struct qcom_glink_smem { struct device dev; + int irq; struct qcom_glink *glink; + struct mbox_client mbox_client; + struct mbox_chan *mbox_chan; + u32 remote_pid; }; @@ -186,6 +192,24 @@ static void glink_smem_tx_write(struct qcom_glink_pipe *glink_pipe, *pipe->head = cpu_to_le32(head); } +static void glink_smem_tx_kick(struct qcom_glink_pipe *glink_pipe) +{ + struct glink_smem_pipe *pipe = to_smem_pipe(glink_pipe); + struct qcom_glink_smem *smem = pipe->smem; + + mbox_send_message(smem->mbox_chan, NULL); + mbox_client_txdone(smem->mbox_chan, 0); +} + +static irqreturn_t qcom_glink_smem_intr(int irq, void *data) +{ + struct qcom_glink_smem *smem = data; + + qcom_glink_native_rx(smem->glink); + + return IRQ_HANDLED; +} + static void qcom_glink_smem_release(struct device *dev) { struct qcom_glink_smem *smem = container_of(dev, struct qcom_glink_smem, dev); @@ -280,6 +304,24 @@ struct qcom_glink_smem *qcom_glink_smem_register(struct device *parent, goto err_put_dev; } + smem->irq = of_irq_get(smem->dev.of_node, 0); + ret = devm_request_irq(&smem->dev, smem->irq, qcom_glink_smem_intr, + IRQF_NO_SUSPEND | IRQF_NO_AUTOEN, + "glink-smem", smem); + if (ret) { + dev_err(&smem->dev, "failed to request IRQ\n"); + goto err_put_dev; + } + + smem->mbox_client.dev = &smem->dev; + smem->mbox_client.knows_txdone = true; + smem->mbox_chan = mbox_request_channel(&smem->mbox_client, 0); + if (IS_ERR(smem->mbox_chan)) { + ret = dev_err_probe(&smem->dev, PTR_ERR(smem->mbox_chan), + "failed to acquire IPC channel\n"); + goto err_put_dev; + } + rx_pipe->smem = smem; rx_pipe->native.avail = glink_smem_rx_avail; rx_pipe->native.peak = glink_smem_rx_peak; @@ -288,6 +330,7 @@ struct qcom_glink_smem *qcom_glink_smem_register(struct device *parent, tx_pipe->smem = smem; tx_pipe->native.avail = glink_smem_tx_avail; tx_pipe->native.write = glink_smem_tx_write; + tx_pipe->native.kick = glink_smem_tx_kick; *rx_pipe->tail = 0; *tx_pipe->head = 0; @@ -298,13 +341,17 @@ struct qcom_glink_smem *qcom_glink_smem_register(struct device *parent, false); if (IS_ERR(glink)) { ret = PTR_ERR(glink); - goto err_put_dev; + goto err_free_mbox; } smem->glink = glink; + enable_irq(smem->irq); + return smem; +err_free_mbox: + mbox_free_channel(smem->mbox_chan); err_put_dev: device_unregister(dev); @@ -317,8 +364,12 @@ void qcom_glink_smem_unregister(struct qcom_glink_smem *smem) { struct qcom_glink *glink = smem->glink; + disable_irq(smem->irq); + qcom_glink_native_remove(glink); - qcom_glink_native_unregister(glink); + + mbox_free_channel(smem->mbox_chan); + device_unregister(&smem->dev); } EXPORT_SYMBOL_GPL(qcom_glink_smem_unregister); |