aixiao/build
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity
c97506efcc
build/patch/kernel/archive/rockchip-4.4/230_proc_boardinfo.patch

267 lines
7.3 KiB
Diff
Raw Blame History

From 9321fa69767a5eaafdcdc4dee31082d057355ff6 Mon Sep 17 00:00:00 2001
From: Lyle_Lin <Lyle_Lin@asus.com>
Date: Mon, 21 Aug 2017 18:36:00 +0800
Subject: [PATCH] Add node /proc/board_info to display board info
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
cat /proc/board_info
Display project id, RAM id, PCB id.
Change-Id: I5163fb1004d967e367e74b57e89a93464cd19283
Reviewed-on: https://tp-biosrd-v02/gerrit/80253
Reviewed-by: Alex Cheng(鄭富元) <Alex_Cheng@asus.com>
Tested-by: Alex Cheng(鄭富元) <Alex_Cheng@asus.com>
---
drivers/Makefile | 1 +
drivers/board-info/Makefile | 1 +
drivers/board-info/board-info.c | 217 ++++++++++++++++++++++++++++++++++++++++
3 files changed, 219 insertions(+)
create mode 100644 drivers/board-info/Makefile
create mode 100644 drivers/board-info/board-info.c
diff --git a/drivers/Makefile b/drivers/Makefile
index 4d00308c..a2a82b39 100644
--- a/drivers/Makefile
+++ b/drivers/Makefile
@@ -181,4 +181,5 @@ obj-$(CONFIG_RK_HEADSET) += headset_observe/
obj-$(CONFIG_RK_FLASH) += rkflash/
obj-y += rk_nand/
-obj-y += tinkerboard/
\ No newline at end of file
+obj-y += tinkerboard/
+obj-y += board-info/
diff --git a/drivers/board-info/Makefile b/drivers/board-info/Makefile
new file mode 100644
index 000000000000..6e67808f08e9
--- /dev/null
+++ b/drivers/board-info/Makefile
@@ -0,0 +1 @@
+obj-y += board-info.o
diff --git a/drivers/board-info/board-info.c b/drivers/board-info/board-info.c
new file mode 100644
index 000000000000..7c70bb049461
--- /dev/null
+++ b/drivers/board-info/board-info.c
@@ -0,0 +1,217 @@
+/* NOTICE:
+ * This file is for asus project id pins,
+ */
+
+#include <linux/kernel.h>
+#include <linux/proc_fs.h>
+#include <linux/seq_file.h>
+#include <linux/gpio.h>
+#include <linux/init.h>
+#include <linux/module.h>
+
+#include <linux/rockchip/iomap.h>
+#include <linux/rockchip/grf.h>
+
+
+/* Project id (GPIO2_A3, GPIO2_A2, GPIO2_A1)
+ * Ram id (GPIO2_B6, GPIO2_B5, GPIO2_B4)
+ * PCB id (GPIO2_B2, GPIO2_B1 ,GPIO2_B0)
+ */
+#define GPIO2_A1 57
+#define GPIO2_A2 58
+#define GPIO2_A3 59
+#define GPIO2_B0 64
+#define GPIO2_B1 65
+#define GPIO2_B2 66
+#define GPIO2_B4 68
+#define GPIO2_B5 69
+#define GPIO2_B6 70
+
+/* board hardware parameter*/
+int project_id_0, project_id_1, project_id_2;
+int ram_id_0, ram_id_1, ram_id_2;
+int pcb_id_0, pcb_id_1, pcb_id_2;
+
+void *regs;
+int err;
+
+char *board_type = "Unknown Board type";
+char *ram_size = "Unknown RAM size";
+char *pcb = "Unknown PCB";
+
+static struct proc_dir_entry *project_id_proc_file;
+
+static void read_project_id(void)
+{
+ err = gpio_request(GPIO2_A1, "project_id_0");
+ if (err < 0) {
+ printk("%s: gpio_request failed for GPIO2_A1 %d\n", __func__, GPIO2_A1);
+ return ;
+ } else {
+ gpio_direction_input(GPIO2_A1);
+ project_id_0 = gpio_get_value(GPIO2_A1);
+ }
+ err = gpio_request(GPIO2_A2, "project_id_1");
+ if (err < 0) {
+ printk("%s: gpio_request failed for GPIO2_A2 %d\n", __func__, GPIO2_A2);
+ return ;
+ } else {
+ gpio_direction_input(GPIO2_A2);
+ project_id_1 = gpio_get_value(GPIO2_A2);
+ }
+ err = gpio_request(GPIO2_A3, "project_id_2");
+ if (err < 0) {
+ printk("%s: gpio_request failed for GPIO2_A3 %d\n", __func__, GPIO2_A3);
+ return ;
+ } else {
+ gpio_direction_input(GPIO2_A3);
+ project_id_2 = gpio_get_value(GPIO2_A3);
+ }
+
+ printk("project_id_2:0x%x, project_id_1:0x%x, project_id_0:0x%x \n",
+ project_id_2, project_id_1, project_id_0);
+
+ if (project_id_2 == 0 && project_id_1 == 0 && project_id_0 == 0)
+ board_type = "Tinker Board S";
+ else if (project_id_2 == 1 && project_id_1 == 1 && project_id_0 == 1)
+ board_type = "Tinker Board";
+ else
+ board_type = "unknown board name";
+}
+
+static void read_ram_id(void)
+{
+ err = gpio_request(GPIO2_B4, "ram_id_0");
+ if (err < 0) {
+ printk("%s: gpio_request failed for GPIO2_B4 %d\n", __func__, GPIO2_B4);
+ return ;
+ } else {
+ gpio_direction_input(GPIO2_B4);
+ ram_id_0 = gpio_get_value(GPIO2_B4);
+ }
+ err = gpio_request(GPIO2_B5, "ram_id_1");
+ if (err < 0) {
+ printk("%s: gpio_request failed for GPIO2_B5 %d\n", __func__, GPIO2_B5);
+ return ;
+ } else {
+ gpio_direction_input(GPIO2_B5);
+ ram_id_1 = gpio_get_value(GPIO2_B5);
+ }
+ err = gpio_request(GPIO2_B6, "ram_id_2");
+ if (err < 0) {
+ printk("%s: gpio_request failed for GPIO2_B6 %d\n", __func__, GPIO2_B6);
+ return ;
+ } else {
+ gpio_direction_input(GPIO2_B6);
+ ram_id_2 = gpio_get_value(GPIO2_B6);
+ }
+
+ printk("ram_id_2:0x%x, ram_id_1:0x%x, ram_id_0:0x%x \n",
+ ram_id_2, ram_id_1, ram_id_0);
+
+ if (ram_id_2 == 0 && ram_id_1 == 0 && ram_id_0 == 0)
+ ram_size = "4 GB";
+ else if (ram_id_2 == 0 && ram_id_1 == 1 && ram_id_0 == 0)
+ ram_size = "2 GB";
+ else if (ram_id_2 == 1 && ram_id_1 == 0 && ram_id_0 == 0)
+ ram_size = "1 GB";
+ else
+ ram_size = "unknown ram";
+}
+
+static void read_pcb_id(void)
+{
+ err = gpio_request(GPIO2_B0, "pcb_id_0");
+ if (err < 0) {
+ printk("%s: gpio_request failed for GPIO2_B0 %d\n", __func__, GPIO2_B0);
+ return ;
+ } else {
+ gpio_direction_input(GPIO2_B0);
+ pcb_id_0 = gpio_get_value(GPIO2_B0);
+ }
+ err = gpio_request(GPIO2_B1, "pcb_id_1");
+ if (err < 0) {
+ printk("%s: gpio_request failed for GPIO2_B1 %d\n", __func__, GPIO2_B1);
+ return ;
+ } else {
+ gpio_direction_input(GPIO2_B1);
+ pcb_id_1 = gpio_get_value(GPIO2_B1);
+ }
+ err = gpio_request(GPIO2_B2, "pcb_id_2");
+ if (err < 0) {
+ printk("%s: gpio_request failed for GPIO2_B2 %d\n", __func__, GPIO2_B2);
+ return ;
+ } else {
+ gpio_direction_input(GPIO2_B2);
+ pcb_id_2 = gpio_get_value(GPIO2_B2);
+ }
+
+ printk("pcb_id_2:0x%x, pcb_id_1:0x%x, pcb_id_0:0x%x \n",
+ pcb_id_2, pcb_id_1, pcb_id_0);
+
+ if (pcb_id_2 == 0 && pcb_id_1 == 0 && pcb_id_0 == 0)
+ pcb = "SR";
+ else if (pcb_id_2 == 0 && pcb_id_1 == 0 && pcb_id_0 == 1)
+ pcb = "ER";
+ else if (pcb_id_2 == 0 && pcb_id_1 == 1 && pcb_id_0 == 0)
+ pcb = "PR";
+ else
+ pcb = "unknown pcb";
+}
+
+static int board_info_proc_read(struct seq_file *buf, void *v)
+{
+ /* Board info display */
+ seq_printf(buf, "%s\n%s\n%s\n", board_type, ram_size, pcb);
+ printk("[board_info] %s board_type=\'%s\' ram_size=\'%s' pcb=\'%s\'\n",
+ __func__, board_type, ram_size, pcb);
+ return 0;
+}
+
+static int project_id_proc_open(struct inode *inode, struct file *file)
+{
+ return single_open(file, board_info_proc_read, NULL);
+}
+
+
+static struct file_operations project_id_proc_ops = {
+ .open = project_id_proc_open,
+ .read = seq_read,
+ .release = single_release,
+};
+
+static void create_project_id_proc_file(void)
+{
+ project_id_proc_file = proc_create("board_info", 0444, NULL,
+ &project_id_proc_ops);
+ if (project_id_proc_file) {
+ printk("[board_info] create Board_info_proc_file sucessed!\n");
+ } else {
+ printk("[board_info] create Board_info_proc_file failed!\n");
+ }
+
+ /* Pull up GPIO2 A1 A2 A3*/
+ regs = ioremap(RK3288_GRF_PHYS, 64*1024);
+ if (regs == NULL) {
+ printk("[board_info] ioremap failed");
+ return ;
+ }
+ writel((readl(regs + RK3288_GRF_GPIO2A_P) & ~(0x3f << 18) & ~(0x3f << 2))
+ | (0x3f << 18) | (0x15 << 2), regs + RK3288_GRF_GPIO2A_P);
+ // printk("[board_info] %x\n", readl(regs + RK3288_GRF_GPIO2A_P));
+
+ iounmap(regs);
+
+ /* Read GPIO */
+ read_project_id();
+ read_ram_id();
+ read_pcb_id();
+}
+
+static int __init proc_asusPRJ_init(void)
+{
+ create_project_id_proc_file();
+ return 0;
+}
+
+module_init(proc_asusPRJ_init);
Reference in New Issue View Git Blame Copy Permalink