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Received: from foss.arm.com ([217.140.110.172]) by casper.infradead.org with esmtp (Exim 4.94 #2 (Red Hat Linux)) id 1lM9Cn-0003yf-Cw for linux-arm-kernel@lists.infradead.org; Tue, 16 Mar 2021 12:54:26 +0000 Received: from usa-sjc-imap-foss1.foss.arm.com (unknown [10.121.207.14]) by usa-sjc-mx-foss1.foss.arm.com (Postfix) with ESMTP id A59AA147A; Tue, 16 Mar 2021 05:49:54 -0700 (PDT) Received: from e120937-lin.home (unknown [172.31.20.19]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPSA id 9DE803F792; Tue, 16 Mar 2021 05:49:52 -0700 (PDT) From: Cristian Marussi To: linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org Cc: sudeep.holla@arm.com, lukasz.luba@arm.com, james.quinlan@broadcom.com, Jonathan.Cameron@Huawei.com, f.fainelli@gmail.com, etienne.carriere@linaro.org, thara.gopinath@linaro.org, vincent.guittot@linaro.org, souvik.chakravarty@arm.com, cristian.marussi@arm.com Subject: [PATCH v7 17/38] firmware: arm_scmi: port Clock protocol to new protocols interface Date: Tue, 16 Mar 2021 12:48:42 +0000 Message-Id: <20210316124903.35011-18-cristian.marussi@arm.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20210316124903.35011-1-cristian.marussi@arm.com> References: <20210316124903.35011-1-cristian.marussi@arm.com> X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20210316_125403_009634_0D6BC4C3 X-CRM114-Status: GOOD ( 18.80 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org Convert internals of protocol implementation to use protocol handles and expose a new protocol operations interface for SCMI driver using the new get/put common operations, while keeping the old handle->clk_ops still around to ease transition. Remove handle->clock_priv now unused. Signed-off-by: Cristian Marussi --- drivers/firmware/arm_scmi/clock.c | 182 ++++++++++++++++++++---------- include/linux/scmi_protocol.h | 20 +++- 2 files changed, 139 insertions(+), 63 deletions(-) diff --git a/drivers/firmware/arm_scmi/clock.c b/drivers/firmware/arm_scmi/clock.c index 2312e824ed3c..1b3b0278b73d 100644 --- a/drivers/firmware/arm_scmi/clock.c +++ b/drivers/firmware/arm_scmi/clock.c @@ -74,52 +74,53 @@ struct clock_info { struct scmi_clock_info *clk; }; -static int scmi_clock_protocol_attributes_get(const struct scmi_handle *handle, - struct clock_info *ci) +static int +scmi_clock_protocol_attributes_get(const struct scmi_protocol_handle *ph, + struct clock_info *ci) { int ret; struct scmi_xfer *t; struct scmi_msg_resp_clock_protocol_attributes *attr; - ret = scmi_xfer_get_init(handle, PROTOCOL_ATTRIBUTES, - SCMI_PROTOCOL_CLOCK, 0, sizeof(*attr), &t); + ret = ph->xops->xfer_get_init(ph, PROTOCOL_ATTRIBUTES, + 0, sizeof(*attr), &t); if (ret) return ret; attr = t->rx.buf; - ret = scmi_do_xfer(handle, t); + ret = ph->xops->do_xfer(ph, t); if (!ret) { ci->num_clocks = le16_to_cpu(attr->num_clocks); ci->max_async_req = attr->max_async_req; } - scmi_xfer_put(handle, t); + ph->xops->xfer_put(ph, t); return ret; } -static int scmi_clock_attributes_get(const struct scmi_handle *handle, +static int scmi_clock_attributes_get(const struct scmi_protocol_handle *ph, u32 clk_id, struct scmi_clock_info *clk) { int ret; struct scmi_xfer *t; struct scmi_msg_resp_clock_attributes *attr; - ret = scmi_xfer_get_init(handle, CLOCK_ATTRIBUTES, SCMI_PROTOCOL_CLOCK, - sizeof(clk_id), sizeof(*attr), &t); + ret = ph->xops->xfer_get_init(ph, CLOCK_ATTRIBUTES, + sizeof(clk_id), sizeof(*attr), &t); if (ret) return ret; put_unaligned_le32(clk_id, t->tx.buf); attr = t->rx.buf; - ret = scmi_do_xfer(handle, t); + ret = ph->xops->do_xfer(ph, t); if (!ret) strlcpy(clk->name, attr->name, SCMI_MAX_STR_SIZE); else clk->name[0] = '\0'; - scmi_xfer_put(handle, t); + ph->xops->xfer_put(ph, t); return ret; } @@ -136,7 +137,7 @@ static int rate_cmp_func(const void *_r1, const void *_r2) } static int -scmi_clock_describe_rates_get(const struct scmi_handle *handle, u32 clk_id, +scmi_clock_describe_rates_get(const struct scmi_protocol_handle *ph, u32 clk_id, struct scmi_clock_info *clk) { u64 *rate = NULL; @@ -148,8 +149,8 @@ scmi_clock_describe_rates_get(const struct scmi_handle *handle, u32 clk_id, struct scmi_msg_clock_describe_rates *clk_desc; struct scmi_msg_resp_clock_describe_rates *rlist; - ret = scmi_xfer_get_init(handle, CLOCK_DESCRIBE_RATES, - SCMI_PROTOCOL_CLOCK, sizeof(*clk_desc), 0, &t); + ret = ph->xops->xfer_get_init(ph, CLOCK_DESCRIBE_RATES, + sizeof(*clk_desc), 0, &t); if (ret) return ret; @@ -161,7 +162,7 @@ scmi_clock_describe_rates_get(const struct scmi_handle *handle, u32 clk_id, /* Set the number of rates to be skipped/already read */ clk_desc->rate_index = cpu_to_le32(tot_rate_cnt); - ret = scmi_do_xfer(handle, t); + ret = ph->xops->do_xfer(ph, t); if (ret) goto err; @@ -171,7 +172,7 @@ scmi_clock_describe_rates_get(const struct scmi_handle *handle, u32 clk_id, num_returned = NUM_RETURNED(rates_flag); if (tot_rate_cnt + num_returned > SCMI_MAX_NUM_RATES) { - dev_err(handle->dev, "No. of rates > MAX_NUM_RATES"); + dev_err(ph->dev, "No. of rates > MAX_NUM_RATES"); break; } @@ -179,7 +180,7 @@ scmi_clock_describe_rates_get(const struct scmi_handle *handle, u32 clk_id, clk->range.min_rate = RATE_TO_U64(rlist->rate[0]); clk->range.max_rate = RATE_TO_U64(rlist->rate[1]); clk->range.step_size = RATE_TO_U64(rlist->rate[2]); - dev_dbg(handle->dev, "Min %llu Max %llu Step %llu Hz\n", + dev_dbg(ph->dev, "Min %llu Max %llu Step %llu Hz\n", clk->range.min_rate, clk->range.max_rate, clk->range.step_size); break; @@ -188,12 +189,12 @@ scmi_clock_describe_rates_get(const struct scmi_handle *handle, u32 clk_id, rate = &clk->list.rates[tot_rate_cnt]; for (cnt = 0; cnt < num_returned; cnt++, rate++) { *rate = RATE_TO_U64(rlist->rate[cnt]); - dev_dbg(handle->dev, "Rate %llu Hz\n", *rate); + dev_dbg(ph->dev, "Rate %llu Hz\n", *rate); } tot_rate_cnt += num_returned; - scmi_reset_rx_to_maxsz(handle, t); + ph->xops->reset_rx_to_maxsz(ph, t); /* * check for both returned and remaining to avoid infinite * loop due to buggy firmware @@ -208,42 +209,52 @@ scmi_clock_describe_rates_get(const struct scmi_handle *handle, u32 clk_id, clk->rate_discrete = rate_discrete; err: - scmi_xfer_put(handle, t); + ph->xops->xfer_put(ph, t); return ret; } static int -scmi_clock_rate_get(const struct scmi_handle *handle, u32 clk_id, u64 *value) +scmi_clock_rate_get(const struct scmi_protocol_handle *ph, + u32 clk_id, u64 *value) { int ret; struct scmi_xfer *t; - ret = scmi_xfer_get_init(handle, CLOCK_RATE_GET, SCMI_PROTOCOL_CLOCK, - sizeof(__le32), sizeof(u64), &t); + ret = ph->xops->xfer_get_init(ph, CLOCK_RATE_GET, + sizeof(__le32), sizeof(u64), &t); if (ret) return ret; put_unaligned_le32(clk_id, t->tx.buf); - ret = scmi_do_xfer(handle, t); + ret = ph->xops->do_xfer(ph, t); if (!ret) *value = get_unaligned_le64(t->rx.buf); - scmi_xfer_put(handle, t); + ph->xops->xfer_put(ph, t); return ret; } -static int scmi_clock_rate_set(const struct scmi_handle *handle, u32 clk_id, - u64 rate) +static int +__scmi_clock_rate_get(const struct scmi_handle *handle, + u32 clk_id, u64 *value) +{ + const struct scmi_protocol_handle *ph = + scmi_map_protocol_handle(handle, SCMI_PROTOCOL_CLOCK); + + return scmi_clock_rate_get(ph, clk_id, value); +} + +static int scmi_clock_rate_set(const struct scmi_protocol_handle *ph, + u32 clk_id, u64 rate) { int ret; u32 flags = 0; struct scmi_xfer *t; struct scmi_clock_set_rate *cfg; - struct clock_info *ci = handle->clk_priv; + struct clock_info *ci = ph->get_priv(ph); - ret = scmi_xfer_get_init(handle, CLOCK_RATE_SET, SCMI_PROTOCOL_CLOCK, - sizeof(*cfg), 0, &t); + ret = ph->xops->xfer_get_init(ph, CLOCK_RATE_SET, sizeof(*cfg), 0, &t); if (ret) return ret; @@ -258,26 +269,36 @@ static int scmi_clock_rate_set(const struct scmi_handle *handle, u32 clk_id, cfg->value_high = cpu_to_le32(rate >> 32); if (flags & CLOCK_SET_ASYNC) - ret = scmi_do_xfer_with_response(handle, t); + ret = ph->xops->do_xfer_with_response(ph, t); else - ret = scmi_do_xfer(handle, t); + ret = ph->xops->do_xfer(ph, t); if (ci->max_async_req) atomic_dec(&ci->cur_async_req); - scmi_xfer_put(handle, t); + ph->xops->xfer_put(ph, t); return ret; } +static int __scmi_clock_rate_set(const struct scmi_handle *handle, + u32 clk_id, u64 rate) +{ + const struct scmi_protocol_handle *ph = + scmi_map_protocol_handle(handle, SCMI_PROTOCOL_CLOCK); + + return scmi_clock_rate_set(ph, clk_id, rate); +} + static int -scmi_clock_config_set(const struct scmi_handle *handle, u32 clk_id, u32 config) +scmi_clock_config_set(const struct scmi_protocol_handle *ph, u32 clk_id, + u32 config) { int ret; struct scmi_xfer *t; struct scmi_clock_set_config *cfg; - ret = scmi_xfer_get_init(handle, CLOCK_CONFIG_SET, SCMI_PROTOCOL_CLOCK, - sizeof(*cfg), 0, &t); + ret = ph->xops->xfer_get_init(ph, CLOCK_CONFIG_SET, + sizeof(*cfg), 0, &t); if (ret) return ret; @@ -285,33 +306,57 @@ scmi_clock_config_set(const struct scmi_handle *handle, u32 clk_id, u32 config) cfg->id = cpu_to_le32(clk_id); cfg->attributes = cpu_to_le32(config); - ret = scmi_do_xfer(handle, t); + ret = ph->xops->do_xfer(ph, t); - scmi_xfer_put(handle, t); + ph->xops->xfer_put(ph, t); return ret; } -static int scmi_clock_enable(const struct scmi_handle *handle, u32 clk_id) +static int scmi_clock_enable(const struct scmi_protocol_handle *ph, u32 clk_id) +{ + return scmi_clock_config_set(ph, clk_id, CLOCK_ENABLE); +} + +static int __scmi_clock_enable(const struct scmi_handle *handle, u32 clk_id) +{ + const struct scmi_protocol_handle *ph = + scmi_map_protocol_handle(handle, SCMI_PROTOCOL_CLOCK); + + return scmi_clock_enable(ph, clk_id); +} + +static int scmi_clock_disable(const struct scmi_protocol_handle *ph, u32 clk_id) { - return scmi_clock_config_set(handle, clk_id, CLOCK_ENABLE); + return scmi_clock_config_set(ph, clk_id, 0); } -static int scmi_clock_disable(const struct scmi_handle *handle, u32 clk_id) +static int __scmi_clock_disable(const struct scmi_handle *handle, u32 clk_id) { - return scmi_clock_config_set(handle, clk_id, 0); + const struct scmi_protocol_handle *ph = + scmi_map_protocol_handle(handle, SCMI_PROTOCOL_CLOCK); + + return scmi_clock_disable(ph, clk_id); } -static int scmi_clock_count_get(const struct scmi_handle *handle) +static int scmi_clock_count_get(const struct scmi_protocol_handle *ph) { - struct clock_info *ci = handle->clk_priv; + struct clock_info *ci = ph->get_priv(ph); return ci->num_clocks; } +static int __scmi_clock_count_get(const struct scmi_handle *handle) +{ + const struct scmi_protocol_handle *ph = + scmi_map_protocol_handle(handle, SCMI_PROTOCOL_CLOCK); + + return scmi_clock_count_get(ph); +} + static const struct scmi_clock_info * -scmi_clock_info_get(const struct scmi_handle *handle, u32 clk_id) +scmi_clock_info_get(const struct scmi_protocol_handle *ph, u32 clk_id) { - struct clock_info *ci = handle->clk_priv; + struct clock_info *ci = ph->get_priv(ph); struct scmi_clock_info *clk = ci->clk + clk_id; if (!clk->name[0]) @@ -320,7 +365,25 @@ scmi_clock_info_get(const struct scmi_handle *handle, u32 clk_id) return clk; } +static const struct scmi_clock_info * +__scmi_clock_info_get(const struct scmi_handle *handle, u32 clk_id) +{ + const struct scmi_protocol_handle *ph = + scmi_map_protocol_handle(handle, SCMI_PROTOCOL_CLOCK); + + return scmi_clock_info_get(ph, clk_id); +} + static const struct scmi_clk_ops clk_ops = { + .count_get = __scmi_clock_count_get, + .info_get = __scmi_clock_info_get, + .rate_get = __scmi_clock_rate_get, + .rate_set = __scmi_clock_rate_set, + .enable = __scmi_clock_enable, + .disable = __scmi_clock_disable, +}; + +static const struct scmi_clk_proto_ops clk_proto_ops = { .count_get = scmi_clock_count_get, .info_get = scmi_clock_info_get, .rate_get = scmi_clock_rate_get, @@ -329,24 +392,25 @@ static const struct scmi_clk_ops clk_ops = { .disable = scmi_clock_disable, }; -static int scmi_clock_protocol_init(struct scmi_handle *handle) +static int scmi_clock_protocol_init(const struct scmi_protocol_handle *ph) { u32 version; int clkid, ret; struct clock_info *cinfo; + struct scmi_handle *handle; - scmi_version_get(handle, SCMI_PROTOCOL_CLOCK, &version); + ph->xops->version_get(ph, &version); - dev_dbg(handle->dev, "Clock Version %d.%d\n", + dev_dbg(ph->dev, "Clock Version %d.%d\n", PROTOCOL_REV_MAJOR(version), PROTOCOL_REV_MINOR(version)); - cinfo = devm_kzalloc(handle->dev, sizeof(*cinfo), GFP_KERNEL); + cinfo = devm_kzalloc(ph->dev, sizeof(*cinfo), GFP_KERNEL); if (!cinfo) return -ENOMEM; - scmi_clock_protocol_attributes_get(handle, cinfo); + scmi_clock_protocol_attributes_get(ph, cinfo); - cinfo->clk = devm_kcalloc(handle->dev, cinfo->num_clocks, + cinfo->clk = devm_kcalloc(ph->dev, cinfo->num_clocks, sizeof(*cinfo->clk), GFP_KERNEL); if (!cinfo->clk) return -ENOMEM; @@ -354,22 +418,24 @@ static int scmi_clock_protocol_init(struct scmi_handle *handle) for (clkid = 0; clkid < cinfo->num_clocks; clkid++) { struct scmi_clock_info *clk = cinfo->clk + clkid; - ret = scmi_clock_attributes_get(handle, clkid, clk); + ret = scmi_clock_attributes_get(ph, clkid, clk); if (!ret) - scmi_clock_describe_rates_get(handle, clkid, clk); + scmi_clock_describe_rates_get(ph, clkid, clk); } cinfo->version = version; + + /* Transient code for legacy ops interface */ + handle = scmi_map_scmi_handle(ph); handle->clk_ops = &clk_ops; - handle->clk_priv = cinfo; - return 0; + return ph->set_priv(ph, cinfo); } static const struct scmi_protocol scmi_clock = { .id = SCMI_PROTOCOL_CLOCK, - .init = &scmi_clock_protocol_init, - .ops = &clk_ops, + .instance_init = &scmi_clock_protocol_init, + .ops = &clk_proto_ops, }; DEFINE_SCMI_PROTOCOL_REGISTER_UNREGISTER(clock, scmi_clock) diff --git a/include/linux/scmi_protocol.h b/include/linux/scmi_protocol.h index 2328d36b7597..b19797b23c5f 100644 --- a/include/linux/scmi_protocol.h +++ b/include/linux/scmi_protocol.h @@ -61,7 +61,7 @@ struct scmi_device; struct scmi_protocol_handle; /** - * struct scmi_clk_ops - represents the various operations provided + * struct scmi_clk_proto_ops - represents the various operations provided * by SCMI Clock Protocol * * @count_get: get the count of clocks provided by SCMI @@ -71,8 +71,21 @@ struct scmi_protocol_handle; * @enable: enables the specified clock * @disable: disables the specified clock */ +struct scmi_clk_proto_ops { + int (*count_get)(const struct scmi_protocol_handle *ph); + + const struct scmi_clock_info *(*info_get) + (const struct scmi_protocol_handle *ph, u32 clk_id); + int (*rate_get)(const struct scmi_protocol_handle *ph, u32 clk_id, + u64 *rate); + int (*rate_set)(const struct scmi_protocol_handle *ph, u32 clk_id, + u64 rate); + int (*enable)(const struct scmi_protocol_handle *ph, u32 clk_id); + int (*disable)(const struct scmi_protocol_handle *ph, u32 clk_id); +}; + struct scmi_clk_ops { - int (*count_get)(const struct scmi_handle *handle); + int (*count_get)(const struct scmi_handle *hamdle); const struct scmi_clock_info *(*info_get) (const struct scmi_handle *handle, u32 clk_id); @@ -613,8 +626,6 @@ struct scmi_notify_ops { * operations and a dedicated protocol handler * @devm_protocol_put: devres managed method to release a protocol * @notify_ops: pointer to set of notifications related operations - * @clk_priv: pointer to private data structure specific to clock - * protocol(for internal use only) * @sensor_priv: pointer to private data structure specific to sensors * protocol(for internal use only) * @reset_priv: pointer to private data structure specific to reset @@ -639,7 +650,6 @@ struct scmi_handle { const struct scmi_notify_ops *notify_ops; /* for protocol internal use */ - void *clk_priv; void *sensor_priv; void *reset_priv; void *voltage_priv; -- 2.17.1 _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel