From a5969cabbb4660eab42b6ef0412cbbd1200cf14d Mon Sep 17 00:00:00 2001
From: hc <hc@nodka.com>
Date: Sat, 12 Oct 2024 07:10:09 +0000
Subject: [PATCH] 修改led为gpio
---
kernel/drivers/i2c/busses/i2c-tegra-bpmp.c | 38 +++++++++++++++++++++-----------------
1 files changed, 21 insertions(+), 17 deletions(-)
diff --git a/kernel/drivers/i2c/busses/i2c-tegra-bpmp.c b/kernel/drivers/i2c/busses/i2c-tegra-bpmp.c
index 240bd1e..c0c7d01 100644
--- a/kernel/drivers/i2c/busses/i2c-tegra-bpmp.c
+++ b/kernel/drivers/i2c/busses/i2c-tegra-bpmp.c
@@ -1,21 +1,10 @@
+// SPDX-License-Identifier: GPL-2.0-only
/*
* drivers/i2c/busses/i2c-tegra-bpmp.c
*
* Copyright (c) 2016 NVIDIA Corporation. All rights reserved.
*
* Author: Shardar Shariff Md <smohammed@nvidia.com>
- *
- * This program is free software; you can redistribute it and/or modify it
- * under the terms and conditions of the GNU General Public License,
- * version 2, as published by the Free Software Foundation.
- *
- * This program is distributed in the hope it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
- * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
- * more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include <linux/err.h>
@@ -207,7 +196,8 @@
static int tegra_bpmp_i2c_msg_xfer(struct tegra_bpmp_i2c *i2c,
struct mrq_i2c_request *request,
- struct mrq_i2c_response *response)
+ struct mrq_i2c_response *response,
+ bool atomic)
{
struct tegra_bpmp_message msg;
int err;
@@ -222,7 +212,7 @@
msg.rx.data = response;
msg.rx.size = sizeof(*response);
- if (irqs_disabled())
+ if (atomic)
err = tegra_bpmp_transfer_atomic(i2c->bpmp, &msg);
else
err = tegra_bpmp_transfer(i2c->bpmp, &msg);
@@ -230,8 +220,9 @@
return err;
}
-static int tegra_bpmp_i2c_xfer(struct i2c_adapter *adapter,
- struct i2c_msg *msgs, int num)
+static int tegra_bpmp_i2c_xfer_common(struct i2c_adapter *adapter,
+ struct i2c_msg *msgs, int num,
+ bool atomic)
{
struct tegra_bpmp_i2c *i2c = i2c_get_adapdata(adapter);
struct mrq_i2c_response response;
@@ -253,7 +244,7 @@
return err;
}
- err = tegra_bpmp_i2c_msg_xfer(i2c, &request, &response);
+ err = tegra_bpmp_i2c_msg_xfer(i2c, &request, &response, atomic);
if (err < 0) {
dev_err(i2c->dev, "failed to transfer message: %d\n", err);
return err;
@@ -268,6 +259,18 @@
return num;
}
+static int tegra_bpmp_i2c_xfer(struct i2c_adapter *adapter,
+ struct i2c_msg *msgs, int num)
+{
+ return tegra_bpmp_i2c_xfer_common(adapter, msgs, num, false);
+}
+
+static int tegra_bpmp_i2c_xfer_atomic(struct i2c_adapter *adapter,
+ struct i2c_msg *msgs, int num)
+{
+ return tegra_bpmp_i2c_xfer_common(adapter, msgs, num, true);
+}
+
static u32 tegra_bpmp_i2c_func(struct i2c_adapter *adapter)
{
return I2C_FUNC_I2C | I2C_FUNC_SMBUS_EMUL | I2C_FUNC_10BIT_ADDR |
@@ -276,6 +279,7 @@
static const struct i2c_algorithm tegra_bpmp_i2c_algo = {
.master_xfer = tegra_bpmp_i2c_xfer,
+ .master_xfer_atomic = tegra_bpmp_i2c_xfer_atomic,
.functionality = tegra_bpmp_i2c_func,
};
--
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