From 01573e231f18eb2d99162747186f59511f56b64d Mon Sep 17 00:00:00 2001
From: hc <hc@nodka.com>
Date: Fri, 08 Dec 2023 10:40:48 +0000
Subject: [PATCH] 移去rt
---
kernel/drivers/firmware/arm_scmi/clock.c | 150 +++++++++++++++++++++++++++++--------------------
1 files changed, 88 insertions(+), 62 deletions(-)
diff --git a/kernel/drivers/firmware/arm_scmi/clock.c b/kernel/drivers/firmware/arm_scmi/clock.c
index b076f27..7fa1a8a 100644
--- a/kernel/drivers/firmware/arm_scmi/clock.c
+++ b/kernel/drivers/firmware/arm_scmi/clock.c
@@ -2,8 +2,11 @@
/*
* System Control and Management Interface (SCMI) Clock Protocol
*
- * Copyright (C) 2018 ARM Ltd.
+ * Copyright (C) 2018-2020 ARM Ltd.
*/
+
+#include <linux/module.h>
+#include <linux/sort.h>
#include "common.h"
@@ -72,60 +75,73 @@
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;
}
+static int rate_cmp_func(const void *_r1, const void *_r2)
+{
+ const u64 *r1 = _r1, *r2 = _r2;
+
+ if (*r1 < *r2)
+ return -1;
+ else if (*r1 == *r2)
+ return 0;
+ else
+ return 1;
+}
+
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;
+ u64 *rate = NULL;
int ret, cnt;
bool rate_discrete = false;
u32 tot_rate_cnt = 0, rates_flag;
@@ -134,8 +150,8 @@
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;
@@ -147,7 +163,7 @@
/* 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;
@@ -157,7 +173,7 @@
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;
}
@@ -165,7 +181,7 @@
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;
@@ -174,58 +190,63 @@
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;
+
+ ph->xops->reset_rx_to_maxsz(ph, t);
/*
* check for both returned and remaining to avoid infinite
* loop due to buggy firmware
*/
} while (num_returned && num_remaining);
- if (rate_discrete)
+ if (rate_discrete && rate) {
clk->list.num_rates = tot_rate_cnt;
+ sort(clk->list.rates, tot_rate_cnt, sizeof(*rate),
+ rate_cmp_func, NULL);
+ }
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_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;
@@ -240,26 +261,27 @@
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_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;
@@ -267,33 +289,33 @@
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(handle, clk_id, CLOCK_ENABLE);
+ return scmi_clock_config_set(ph, clk_id, CLOCK_ENABLE);
}
-static int scmi_clock_disable(const struct scmi_handle *handle, u32 clk_id)
+static int scmi_clock_disable(const struct scmi_protocol_handle *ph, u32 clk_id)
{
- return scmi_clock_config_set(handle, clk_id, 0);
+ return scmi_clock_config_set(ph, clk_id, 0);
}
-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 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])
@@ -302,7 +324,7 @@
return clk;
}
-static struct scmi_clk_ops clk_ops = {
+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,
@@ -311,24 +333,24 @@
.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;
- 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;
@@ -336,16 +358,20 @@
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;
- handle->clk_ops = &clk_ops;
- handle->clk_priv = cinfo;
-
- return 0;
+ return ph->set_priv(ph, cinfo);
}
-DEFINE_SCMI_PROTOCOL_REGISTER_UNREGISTER(SCMI_PROTOCOL_CLOCK, clock)
+static const struct scmi_protocol scmi_clock = {
+ .id = SCMI_PROTOCOL_CLOCK,
+ .owner = THIS_MODULE,
+ .init_instance = &scmi_clock_protocol_init,
+ .ops = &clk_proto_ops,
+};
+
+DEFINE_SCMI_PROTOCOL_REGISTER_UNREGISTER(clock, scmi_clock)
--
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