From f70575805708cabdedea7498aaa3f710fde4d920 Mon Sep 17 00:00:00 2001
From: hc <hc@nodka.com>
Date: Wed, 31 Jan 2024 03:29:01 +0000
Subject: [PATCH] add lvds1024*800
---
kernel/drivers/i2c/busses/i2c-uniphier.c | 44 ++++++++------------------------------------
1 files changed, 8 insertions(+), 36 deletions(-)
diff --git a/kernel/drivers/i2c/busses/i2c-uniphier.c b/kernel/drivers/i2c/busses/i2c-uniphier.c
index c488e55..ee00a44 100644
--- a/kernel/drivers/i2c/busses/i2c-uniphier.c
+++ b/kernel/drivers/i2c/busses/i2c-uniphier.c
@@ -1,15 +1,6 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
/*
* Copyright (C) 2015 Masahiro Yamada <yamada.masahiro@socionext.com>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that 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.
*/
#include <linux/clk.h>
@@ -44,9 +35,6 @@
#define UNIPHIER_I2C_NOISE 0x1c /* noise filter control */
#define UNIPHIER_I2C_SETUP 0x20 /* setup time control */
-#define UNIPHIER_I2C_DEFAULT_SPEED 100000
-#define UNIPHIER_I2C_MAX_SPEED 400000
-
struct uniphier_i2c_priv {
struct completion comp;
struct i2c_adapter adap;
@@ -80,7 +68,6 @@
reinit_completion(&priv->comp);
txdata |= UNIPHIER_I2C_DTRM_IRQEN;
- dev_dbg(&adap->dev, "write data: 0x%04x\n", txdata);
writel(txdata, priv->membase + UNIPHIER_I2C_DTRM);
time_left = wait_for_completion_timeout(&priv->comp, adap->timeout);
@@ -90,8 +77,6 @@
}
rxdata = readl(priv->membase + UNIPHIER_I2C_DREC);
- dev_dbg(&adap->dev, "read data: 0x%04x\n", rxdata);
-
if (rxdatap)
*rxdatap = rxdata;
@@ -107,14 +92,11 @@
if (ret)
return ret;
- if (unlikely(rxdata & UNIPHIER_I2C_DREC_LAB)) {
- dev_dbg(&adap->dev, "arbitration lost\n");
+ if (unlikely(rxdata & UNIPHIER_I2C_DREC_LAB))
return -EAGAIN;
- }
- if (unlikely(rxdata & UNIPHIER_I2C_DREC_LRB)) {
- dev_dbg(&adap->dev, "could not get ACK\n");
+
+ if (unlikely(rxdata & UNIPHIER_I2C_DREC_LRB))
return -ENXIO;
- }
return 0;
}
@@ -124,7 +106,6 @@
{
int ret;
- dev_dbg(&adap->dev, "start condition\n");
ret = uniphier_i2c_send_byte(adap, addr << 1 |
UNIPHIER_I2C_DTRM_STA |
UNIPHIER_I2C_DTRM_NACK);
@@ -146,7 +127,6 @@
{
int ret;
- dev_dbg(&adap->dev, "start condition\n");
ret = uniphier_i2c_send_byte(adap, addr << 1 |
UNIPHIER_I2C_DTRM_STA |
UNIPHIER_I2C_DTRM_NACK |
@@ -170,7 +150,6 @@
static int uniphier_i2c_stop(struct i2c_adapter *adap)
{
- dev_dbg(&adap->dev, "stop condition\n");
return uniphier_i2c_send_byte(adap, UNIPHIER_I2C_DTRM_STO |
UNIPHIER_I2C_DTRM_NACK);
}
@@ -181,9 +160,6 @@
bool is_read = msg->flags & I2C_M_RD;
bool recovery = false;
int ret;
-
- dev_dbg(&adap->dev, "%s: addr=0x%02x, len=%d, stop=%d\n",
- is_read ? "receive" : "transmit", msg->addr, msg->len, stop);
if (is_read)
ret = uniphier_i2c_rx(adap, msg->addr, msg->len, msg->buf);
@@ -335,7 +311,6 @@
{
struct device *dev = &pdev->dev;
struct uniphier_i2c_priv *priv;
- struct resource *regs;
u32 bus_speed;
unsigned long clk_rate;
int irq, ret;
@@ -344,21 +319,18 @@
if (!priv)
return -ENOMEM;
- regs = platform_get_resource(pdev, IORESOURCE_MEM, 0);
- priv->membase = devm_ioremap_resource(dev, regs);
+ priv->membase = devm_platform_ioremap_resource(pdev, 0);
if (IS_ERR(priv->membase))
return PTR_ERR(priv->membase);
irq = platform_get_irq(pdev, 0);
- if (irq < 0) {
- dev_err(dev, "failed to get IRQ number\n");
+ if (irq < 0)
return irq;
- }
if (of_property_read_u32(dev->of_node, "clock-frequency", &bus_speed))
- bus_speed = UNIPHIER_I2C_DEFAULT_SPEED;
+ bus_speed = I2C_MAX_STANDARD_MODE_FREQ;
- if (!bus_speed || bus_speed > UNIPHIER_I2C_MAX_SPEED) {
+ if (!bus_speed || bus_speed > I2C_MAX_FAST_MODE_FREQ) {
dev_err(dev, "invalid clock-frequency %d\n", bus_speed);
return -EINVAL;
}
--
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