From b853cb9628bfbcc4017da46d5f5b46e3eba9d8c6 Mon Sep 17 00:00:00 2001 From: Bjorn Andersson Date: Mon, 28 Mar 2016 21:35:22 -0700 Subject: [PATCH] soc: qcom: smd: Make callback pass channel reference By passing the smd channel reference to the callback, rather than the smd device, we can open additional smd channels from sub-devices of smd devices. Also updates the two smd clients today found in mainline. Signed-off-by: Bjorn Andersson Signed-off-by: Andy Gross --- drivers/soc/qcom/smd-rpm.c | 9 ++++++--- drivers/soc/qcom/smd.c | 22 ++++++++++++++++++---- drivers/soc/qcom/wcnss_ctrl.c | 8 ++++---- include/linux/soc/qcom/smd.h | 7 +++++-- 4 files changed, 33 insertions(+), 13 deletions(-) diff --git a/drivers/soc/qcom/smd-rpm.c b/drivers/soc/qcom/smd-rpm.c index 731fa066f712..6609d7e0edb0 100644 --- a/drivers/soc/qcom/smd-rpm.c +++ b/drivers/soc/qcom/smd-rpm.c @@ -33,6 +33,7 @@ */ struct qcom_smd_rpm { struct qcom_smd_channel *rpm_channel; + struct device *dev; struct completion ack; struct mutex lock; @@ -149,14 +150,14 @@ out: } EXPORT_SYMBOL(qcom_rpm_smd_write); -static int qcom_smd_rpm_callback(struct qcom_smd_device *qsdev, +static int qcom_smd_rpm_callback(struct qcom_smd_channel *channel, const void *data, size_t count) { const struct qcom_rpm_header *hdr = data; size_t hdr_length = le32_to_cpu(hdr->length); const struct qcom_rpm_message *msg; - struct qcom_smd_rpm *rpm = dev_get_drvdata(&qsdev->dev); + struct qcom_smd_rpm *rpm = qcom_smd_get_drvdata(channel); const u8 *buf = data + sizeof(struct qcom_rpm_header); const u8 *end = buf + hdr_length; char msgbuf[32]; @@ -165,7 +166,7 @@ static int qcom_smd_rpm_callback(struct qcom_smd_device *qsdev, if (le32_to_cpu(hdr->service_type) != RPM_SERVICE_TYPE_REQUEST || hdr_length < sizeof(struct qcom_rpm_message)) { - dev_err(&qsdev->dev, "invalid request\n"); + dev_err(rpm->dev, "invalid request\n"); return 0; } @@ -206,7 +207,9 @@ static int qcom_smd_rpm_probe(struct qcom_smd_device *sdev) mutex_init(&rpm->lock); init_completion(&rpm->ack); + rpm->dev = &sdev->dev; rpm->rpm_channel = sdev->channel; + qcom_smd_set_drvdata(sdev->channel, rpm); dev_set_drvdata(&sdev->dev, rpm); diff --git a/drivers/soc/qcom/smd.c b/drivers/soc/qcom/smd.c index b6434c4be86a..ac1957dfdf24 100644 --- a/drivers/soc/qcom/smd.c +++ b/drivers/soc/qcom/smd.c @@ -194,6 +194,8 @@ struct qcom_smd_channel { int pkt_size; + void *drvdata; + struct list_head list; struct list_head dev_list; }; @@ -513,7 +515,6 @@ static void qcom_smd_channel_advance(struct qcom_smd_channel *channel, */ static int qcom_smd_channel_recv_single(struct qcom_smd_channel *channel) { - struct qcom_smd_device *qsdev = channel->qsdev; unsigned tail; size_t len; void *ptr; @@ -533,7 +534,7 @@ static int qcom_smd_channel_recv_single(struct qcom_smd_channel *channel) len = channel->pkt_size; } - ret = channel->cb(qsdev, ptr, len); + ret = channel->cb(channel, ptr, len); if (ret < 0) return ret; @@ -1034,6 +1035,18 @@ int qcom_smd_driver_register(struct qcom_smd_driver *qsdrv) } EXPORT_SYMBOL(qcom_smd_driver_register); +void *qcom_smd_get_drvdata(struct qcom_smd_channel *channel) +{ + return channel->drvdata; +} +EXPORT_SYMBOL(qcom_smd_get_drvdata); + +void qcom_smd_set_drvdata(struct qcom_smd_channel *channel, void *data) +{ + channel->drvdata = data; +} +EXPORT_SYMBOL(qcom_smd_set_drvdata); + /** * qcom_smd_driver_unregister - unregister a smd driver * @qsdrv: qcom_smd_driver struct @@ -1079,12 +1092,13 @@ qcom_smd_find_channel(struct qcom_smd_edge *edge, const char *name) * Returns a channel handle on success, or -EPROBE_DEFER if the channel isn't * ready. */ -struct qcom_smd_channel *qcom_smd_open_channel(struct qcom_smd_device *sdev, +struct qcom_smd_channel *qcom_smd_open_channel(struct qcom_smd_channel *parent, const char *name, qcom_smd_cb_t cb) { struct qcom_smd_channel *channel; - struct qcom_smd_edge *edge = sdev->channel->edge; + struct qcom_smd_device *sdev = parent->qsdev; + struct qcom_smd_edge *edge = parent->edge; int ret; /* Wait up to HZ for the channel to appear */ diff --git a/drivers/soc/qcom/wcnss_ctrl.c b/drivers/soc/qcom/wcnss_ctrl.c index 7a986f881d5c..c544f3d2c6ee 100644 --- a/drivers/soc/qcom/wcnss_ctrl.c +++ b/drivers/soc/qcom/wcnss_ctrl.c @@ -100,17 +100,17 @@ struct wcnss_download_nv_resp { /** * wcnss_ctrl_smd_callback() - handler from SMD responses - * @qsdev: smd device handle + * @channel: smd channel handle * @data: pointer to the incoming data packet * @count: size of the incoming data packet * * Handles any incoming packets from the remote WCNSS_CTRL service. */ -static int wcnss_ctrl_smd_callback(struct qcom_smd_device *qsdev, +static int wcnss_ctrl_smd_callback(struct qcom_smd_channel *channel, const void *data, size_t count) { - struct wcnss_ctrl *wcnss = dev_get_drvdata(&qsdev->dev); + struct wcnss_ctrl *wcnss = qcom_smd_get_drvdata(channel); const struct wcnss_download_nv_resp *nvresp; const struct wcnss_version_resp *version; const struct wcnss_msg_hdr *hdr = data; @@ -246,7 +246,7 @@ static int wcnss_ctrl_probe(struct qcom_smd_device *sdev) init_completion(&wcnss->ack); INIT_WORK(&wcnss->download_nv_work, wcnss_download_nv); - dev_set_drvdata(&sdev->dev, wcnss); + qcom_smd_set_drvdata(sdev->channel, wcnss); return wcnss_request_version(wcnss); } diff --git a/include/linux/soc/qcom/smd.h b/include/linux/soc/qcom/smd.h index bd51c8a9d807..cb2f81559bc0 100644 --- a/include/linux/soc/qcom/smd.h +++ b/include/linux/soc/qcom/smd.h @@ -26,7 +26,7 @@ struct qcom_smd_device { struct qcom_smd_channel *channel; }; -typedef int (*qcom_smd_cb_t)(struct qcom_smd_device *, const void *, size_t); +typedef int (*qcom_smd_cb_t)(struct qcom_smd_channel *, const void *, size_t); /** * struct qcom_smd_driver - smd driver struct @@ -50,13 +50,16 @@ struct qcom_smd_driver { int qcom_smd_driver_register(struct qcom_smd_driver *drv); void qcom_smd_driver_unregister(struct qcom_smd_driver *drv); +void *qcom_smd_get_drvdata(struct qcom_smd_channel *channel); +void qcom_smd_set_drvdata(struct qcom_smd_channel *channel, void *data); + #define module_qcom_smd_driver(__smd_driver) \ module_driver(__smd_driver, qcom_smd_driver_register, \ qcom_smd_driver_unregister) int qcom_smd_send(struct qcom_smd_channel *channel, const void *data, int len); -struct qcom_smd_channel *qcom_smd_open_channel(struct qcom_smd_device *sdev, +struct qcom_smd_channel *qcom_smd_open_channel(struct qcom_smd_channel *channel, const char *name, qcom_smd_cb_t cb); -- 2.39.2