add new system file

hc

2024-02-20 102a0743326a03cd1a1202ceda21e175b7d3575c

 kernel/drivers/spi/spi-rockchip-test.c
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@@ -7,33 +7,6 @@
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  * GNU General Public License for more details.
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  */
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-/* dts config
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-&spi0 {
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-	status = "okay";
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-	max-freq = <48000000>;   //spi internal clk, don't modify
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-	//dma-names = "tx", "rx";   //enable dma
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-	pinctrl-names = "default";  //pinctrl according to you board
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-	pinctrl-0 = <&spi0_clk &spi0_tx &spi0_rx &spi0_cs0 &spi0_cs1>;
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-	spi_test@00 {
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-		compatible = "rockchip,spi_test_bus0_cs0";
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-		reg = <0>;   //chip select  0:cs0  1:cs1
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-		id = <0>;
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-		spi-max-frequency = <24000000>;   //spi output clock
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-		//spi-cpha;      not support
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-		//spi-cpol; 	//if the property is here it is 1:clk is high, else 0:clk is low  when idle
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-	};
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-
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-	spi_test@01 {
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-		compatible = "rockchip,spi_test_bus0_cs1";
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-		reg = <1>;
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-		id = <1>;
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-		spi-max-frequency = <24000000>;
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-		spi-cpha;
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-		spi-cpol;
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-	};
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-};
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-*/
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-
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 /* how to test spi
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 * echo write 0 10 255 > /dev/spi_misc_test
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 * echo write 0 10 255 init.rc > /dev/spi_misc_test
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@@ -50,7 +23,6 @@
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 #include <linux/interrupt.h>
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 #include <linux/delay.h>
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 #include <linux/clk.h>
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-#include <linux/fs.h>
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 #include <linux/dma-mapping.h>
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 #include <linux/dmaengine.h>
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 #include <linux/platform_device.h>
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@@ -65,7 +37,7 @@
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 #include <linux/uaccess.h>
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 #include <linux/syscalls.h>
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39
 
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-#define MAX_SPI_DEV_NUM 8
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+#define MAX_SPI_DEV_NUM 10
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 #define SPI_MAX_SPEED_HZ	12000000
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 struct spi_test_data {
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@@ -102,7 +74,11 @@
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 	spi_message_init(&m);
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 	spi_message_add_tail(&t, &m);
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-	return spi_sync(spi, &m);
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+	ret = spi_sync(spi, &m);
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+	if (m.actual_length && m.actual_length != n)
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+		pr_err("%s len=%d actual_length=%d\n", __func__, n, m.actual_length);
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+
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+	return ret;
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 }
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 int spi_read_slt(int id, void *rxbuf, size_t n)
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@@ -127,11 +103,15 @@
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 	spi_message_init(&m);
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 	spi_message_add_tail(&t, &m);
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-	return spi_sync(spi, &m);
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+	ret = spi_sync(spi, &m);
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+	if (m.actual_length && m.actual_length != n)
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+		pr_err("%s len=%d actual_length=%d\n", __func__, n, m.actual_length);
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+
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+	return ret;
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 }
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-int spi_write_then_read_slt(int id, const void *txbuf, unsigned n_tx,
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-		void *rxbuf, unsigned n_rx)
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+int spi_write_then_read_slt(int id, const void *txbuf, unsigned int n_tx,
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+		void *rxbuf, unsigned int n_rx)
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 {
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 	int ret = -1;
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 	struct spi_device *spi = NULL;
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@@ -225,17 +205,9 @@
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 		}
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 		spi->max_speed_hz = val;
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 	} else if (!strcmp(cmd, "write")) {
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-		char name[64];
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-		int fd;
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-		mm_segment_t old_fs = get_fs();
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-
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 		sscanf(argv[0], "%d", &id);
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 		sscanf(argv[1], "%d", &times);
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 		sscanf(argv[2], "%d", &size);
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-		if (argc > 3) {
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-			sscanf(argv[3], "%s", name);
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-			set_fs(KERNEL_DS);
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-		}
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 		txbuf = kzalloc(size, GFP_KERNEL);
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 		if (!txbuf) {
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@@ -243,19 +215,8 @@
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 			return n;
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 		}
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-		if (argc > 3) {
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-			fd = ksys_open(name, O_RDONLY, 0);
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-			if (fd < 0) {
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-				printk("open %s fail\n", name);
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-			} else {
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-				ksys_read(fd, (char __user *)txbuf, size);
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-				ksys_close(fd);
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-			}
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-			set_fs(old_fs);
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-		} else {
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-			for (i = 0; i < size; i++)
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-				txbuf[i] = i % 256;
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-		}
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+		for (i = 0; i < size; i++)
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+			txbuf[i] = i % 256;
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 		start_time = ktime_get();
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 		for (i = 0; i < times; i++)
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@@ -340,14 +301,21 @@
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 		kfree(txbuf);
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 		kfree(rxbuf);
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 	} else if (!strcmp(cmd, "config")) {
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-		int width;
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+		int width, mode;
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-		sscanf(argv[0], "%d", &width);
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+		sscanf(argv[0], "%d", &id);
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+		sscanf(argv[1], "%d", &width);
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+		sscanf(argv[2], "mode=0x%x", &mode);
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 		if (width == 16)
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 			bit_per_word = 16;
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 		else
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 			bit_per_word = 8;
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+
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+		if (mode) {
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+			g_spi_test_data[id]->spi->mode = mode;
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+			spi_setup(g_spi_test_data[id]->spi);
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+		}
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 	} else {
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 		printk("echo id number size > /dev/spi_misc_test\n");
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 		printk("echo write 0 10 255 > /dev/spi_misc_test\n");
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@@ -355,7 +323,7 @@
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 		printk("echo read 0 10 255 > /dev/spi_misc_test\n");
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 		printk("echo loop 0 10 255 > /dev/spi_misc_test\n");
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 		printk("echo setspeed 0 1000000 > /dev/spi_misc_test\n");
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-		printk("echo config 8 > /dev/spi_misc_test\n");
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+		printk("echo config 0 8 mode=0xb > /dev/spi_misc_test\n");
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 	}
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 	return n;
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@@ -380,9 +348,6 @@
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 	if (!spi)
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 		return -ENOMEM;
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-	if (!spi->dev.of_node)
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-		return -ENOMEM;
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-
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 	spi_test_data = (struct spi_test_data *)kzalloc(sizeof(struct spi_test_data), GFP_KERNEL);
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 	if (!spi_test_data) {
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 		dev_err(&spi->dev, "ERR: no memory for spi_test_data\n");
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@@ -399,7 +364,7 @@
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 		return -1;
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 	}
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-	if (of_property_read_u32(spi->dev.of_node, "id", &id)) {
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+	if (device_property_read_u32(&spi->dev, "id", &id)) {
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 		dev_warn(&spi->dev, "fail to get id, default set 0\n");
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 		id = 0;
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 	}