修改led为gpio

hc

2024-10-12 a5969cabbb4660eab42b6ef0412cbbd1200cf14d

 kernel/drivers/i2c/busses/i2c-imx-lpi2c.c
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@@ -75,12 +75,6 @@
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 #define I2C_CLK_RATIO	2
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 #define CHUNK_DATA	256
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-#define LPI2C_DEFAULT_RATE	100000
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-#define STARDARD_MAX_BITRATE	400000
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-#define FAST_MAX_BITRATE	1000000
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-#define FAST_PLUS_MAX_BITRATE	3400000
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-#define HIGHSPEED_MAX_BITRATE	5000000
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-
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 #define I2C_PM_TIMEOUT		10 /* ms */
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 enum lpi2c_imx_mode {
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@@ -152,13 +146,13 @@
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 	unsigned int bitrate = lpi2c_imx->bitrate;
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 	enum lpi2c_imx_mode mode;
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-	if (bitrate < STARDARD_MAX_BITRATE)
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+	if (bitrate < I2C_MAX_FAST_MODE_FREQ)
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 		mode = STANDARD;
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-	else if (bitrate < FAST_MAX_BITRATE)
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+	else if (bitrate < I2C_MAX_FAST_MODE_PLUS_FREQ)
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 		mode = FAST;
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-	else if (bitrate < FAST_PLUS_MAX_BITRATE)
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+	else if (bitrate < I2C_MAX_HIGH_SPEED_MODE_FREQ)
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 		mode = FAST_PLUS;
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-	else if (bitrate < HIGHSPEED_MAX_BITRATE)
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+	else if (bitrate < I2C_MAX_ULTRA_FAST_MODE_FREQ)
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 		mode = HS;
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 	else
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 		mode = ULTRA_FAST;
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@@ -206,8 +200,8 @@
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 /* CLKLO = I2C_CLK_RATIO * CLKHI, SETHOLD = CLKHI, DATAVD = CLKHI/2 */
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 static int lpi2c_imx_config(struct lpi2c_imx_struct *lpi2c_imx)
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 {
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-	u8 prescale, filt, sethold, clkhi, clklo, datavd;
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-	unsigned int clk_rate, clk_cycle;
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+	u8 prescale, filt, sethold, datavd;
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+	unsigned int clk_rate, clk_cycle, clkhi, clklo;
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 	enum lpi2c_imx_pincfg pincfg;
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 	unsigned int temp;
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@@ -265,7 +259,7 @@
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 	unsigned int temp;
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 	int ret;
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-	ret = pm_runtime_get_sync(lpi2c_imx->adapter.dev.parent);
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+	ret = pm_runtime_resume_and_get(lpi2c_imx->adapter.dev.parent);
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 	if (ret < 0)
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 		return ret;
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@@ -468,6 +462,8 @@
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 		if (num == 1 && msgs[0].len == 0)
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 			goto stop;
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+		lpi2c_imx->rx_buf = NULL;
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+		lpi2c_imx->tx_buf = NULL;
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 		lpi2c_imx->delivered = 0;
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 		lpi2c_imx->msglen = msgs[i].len;
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 		init_completion(&lpi2c_imx->complete);
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@@ -508,10 +504,14 @@
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 static irqreturn_t lpi2c_imx_isr(int irq, void *dev_id)
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 {
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 	struct lpi2c_imx_struct *lpi2c_imx = dev_id;
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+	unsigned int enabled;
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 	unsigned int temp;
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+
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+	enabled = readl(lpi2c_imx->base + LPI2C_MIER);
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 	lpi2c_imx_intctrl(lpi2c_imx, 0);
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 	temp = readl(lpi2c_imx->base + LPI2C_MSR);
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+	temp &= enabled;
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 	if (temp & MSR_RDF)
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 		lpi2c_imx_read_rxfifo(lpi2c_imx);
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@@ -545,7 +545,6 @@
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 static int lpi2c_imx_probe(struct platform_device *pdev)
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 {
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 	struct lpi2c_imx_struct *lpi2c_imx;
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-	struct resource *res;
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 	unsigned int temp;
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 	int irq, ret;
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@@ -553,16 +552,13 @@
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 	if (!lpi2c_imx)
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 		return -ENOMEM;
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-	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
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-	lpi2c_imx->base = devm_ioremap_resource(&pdev->dev, res);
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+	lpi2c_imx->base = devm_platform_ioremap_resource(pdev, 0);
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 	if (IS_ERR(lpi2c_imx->base))
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 		return PTR_ERR(lpi2c_imx->base);
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 	irq = platform_get_irq(pdev, 0);
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-	if (irq < 0) {
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-		dev_err(&pdev->dev, "can't get irq number\n");
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+	if (irq < 0)
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 		return irq;
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-	}
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 	lpi2c_imx->adapter.owner	= THIS_MODULE;
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 	lpi2c_imx->adapter.algo		= &lpi2c_imx_algo;
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@@ -580,7 +576,7 @@
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 	ret = of_property_read_u32(pdev->dev.of_node,
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 				   "clock-frequency", &lpi2c_imx->bitrate);
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 	if (ret)
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-		lpi2c_imx->bitrate = LPI2C_DEFAULT_RATE;
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+		lpi2c_imx->bitrate = I2C_MAX_STANDARD_MODE_FREQ;
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 	ret = devm_request_irq(&pdev->dev, irq, lpi2c_imx_isr, 0,
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 			       pdev->name, lpi2c_imx);
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@@ -639,8 +635,7 @@
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 	return 0;
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 }
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-#ifdef CONFIG_PM_SLEEP
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-static int lpi2c_runtime_suspend(struct device *dev)
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+static int __maybe_unused lpi2c_runtime_suspend(struct device *dev)
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 {
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 	struct lpi2c_imx_struct *lpi2c_imx = dev_get_drvdata(dev);
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@@ -650,7 +645,7 @@
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 	return 0;
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 }
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-static int lpi2c_runtime_resume(struct device *dev)
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+static int __maybe_unused lpi2c_runtime_resume(struct device *dev)
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 {
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 	struct lpi2c_imx_struct *lpi2c_imx = dev_get_drvdata(dev);
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 	int ret;
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@@ -671,10 +666,6 @@
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 	SET_RUNTIME_PM_OPS(lpi2c_runtime_suspend,
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 			   lpi2c_runtime_resume, NULL)
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 };
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-#define IMX_LPI2C_PM      (&lpi2c_pm_ops)
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-#else
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-#define IMX_LPI2C_PM      NULL
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-#endif
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 static struct platform_driver lpi2c_imx_driver = {
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 	.probe = lpi2c_imx_probe,
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@@ -682,7 +673,7 @@
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 	.driver = {
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 		.name = DRIVER_NAME,
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 		.of_match_table = lpi2c_imx_of_match,
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-		.pm = IMX_LPI2C_PM,
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+		.pm = &lpi2c_pm_ops,
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 	},
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 };
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