Initial file dump from open source releaseHEADmaster

1 files changed, 148 insertions, 0 deletions

diff --git a/drivers/platform/sprd/aux_debug.c b/drivers/platform/sprd/aux_debug.c
new file mode 100755
index 00000000..ac65a71e
--- /dev/null
+++ b/drivers/platform/sprd/aux_debug.c
@@ -0,0 +1,148 @@
+#include <linux/init.h>
+#include <linux/suspend.h>
+#include <linux/kobject.h>
+#include <linux/fs.h>
+#include <linux/io.h>
+#include <linux/errno.h>
+#include <linux/mm.h>
+#include <linux/io.h>
+#include <linux/debugfs.h>
+#include <linux/delay.h>
+#include <linux/wakelock.h>
+#include <linux/module.h>
+#include <linux/kthread.h>
+#include <mach/common.h>
+#include <mach/hardware.h>
+#include <mach/sci.h>
+#include <linux/earlysuspend.h>
+#include <mach/sci_glb_regs.h>
+#include <mach/adi.h>
+#include <linux/random.h>
+#include <asm/hardware/cache-l2x0.h>
+#include <asm/cacheflush.h>
+#include <asm/suspend.h>
+#include <linux/vmalloc.h>
+#include <linux/printk.h>
+#include <linux/timer.h>
+#include <linux/jiffies.h>
+
+enum aux_clk_src_e
+{
+	aux_clk_32k 		= 0,
+	aux_clk_26m_rf0 	= 1,
+	aux_clk_26m_rf1 	= 2,
+	aux_clk_48m 		= 3,
+	aux_clk_52m 		= 4,
+	aux_clk_51_2m 		= 5,
+	aux_clk_37_5m		= 6,
+	aux_clk_40m_wifipll1 	= 7,
+	aux_clk_66m		= 8,
+	aux_clk_40m_wifipll2	= 9,
+	aux_clk_max		= 10,
+};
+
+static char clk_menu[10][16]=
+{
+	"32k",
+	"26m rf0",
+	"26m rf1",
+	"48m tdpll",
+	"52m cpll",
+	"51_2m wpll",
+	"37_5m mpll",
+	"40m wifipll1",
+	"66m dpll",
+	"40m wifipll2"
+};
+
+struct aux_cfg_info
+{
+	struct dentry           *debug_aux_dir;
+	char			(*ptr_menu)[16];
+	volatile u32		aux_ena;
+	volatile u32		aux_sel;
+	volatile u32		aux_pin;
+	volatile u32		magic_header;
+	volatile u32		is_init_cfg;
+	volatile u32		cur_sel;
+	volatile u32		magic_ender;
+};
+
+static struct aux_cfg_info clk_cfg_info = 
+{
+	0x00000000,	/*debug_aux_dir*/
+	clk_menu,	/*clk_meum*/
+	0x00000000,	/*aux_ena*/
+	0x00000000,	/*aux_sel*/
+	0x00000000,	/*aux_pin*/
+	0x5a5aa5a5,	/*magic_header*/
+	0x00000000,	/*is_init_cfg*/
+	0x6c657300,	/*cur_sel*/
+	0xa5a55a5a	/*magic_ender*/
+};
+
+static void aux_clk_config(u32 clk_sel)
+{
+	u32 reg_val;
+
+	if(clk_sel < aux_clk_max){
+		/*select pin function to func 0*/
+		reg_val = sci_glb_read(clk_cfg_info.aux_pin,-1UL);
+		reg_val &= ~(0x3 << 4);
+		sci_glb_write(clk_cfg_info.aux_pin,reg_val,-1UL);
+		/*enable aux clock*/
+		sci_glb_set(clk_cfg_info.aux_ena,0x1 << 2);
+		/*select aux clock source*/
+		sci_glb_set(clk_cfg_info.aux_sel,clk_sel);
+	}
+}
+
+static int debugfs_aux_clk_sel_get(void *data, u64 * val)
+{
+	*val = clk_cfg_info.cur_sel & 0xf;
+
+	return 0;
+}
+static int debugfs_aux_clk_sel_set(void *data, u64 val)
+{
+	clk_cfg_info.cur_sel &= ~0xf;
+	clk_cfg_info.cur_sel |= val;
+
+	aux_clk_config(clk_cfg_info.cur_sel & 0xf);
+
+	return 0;
+}
+
+DEFINE_SIMPLE_ATTRIBUTE(fops_aux_clk_ops,
+			debugfs_aux_clk_sel_get, debugfs_aux_clk_sel_set, "%llu\n");
+
+static void aux_debugfs_create(void)
+{
+	clk_cfg_info.debug_aux_dir = debugfs_create_dir("aux_dir", NULL);
+	if (IS_ERR_OR_NULL(clk_cfg_info.debug_aux_dir)) {
+		pr_err("%s return %p\n", __FUNCTION__, clk_cfg_info.debug_aux_dir);
+	}
+	debugfs_create_file("aux", S_IRUGO | S_IWUGO,
+			    clk_cfg_info.debug_aux_dir, &clk_cfg_info.cur_sel, &fops_aux_clk_ops);
+}
+
+static int __init aux_debug_init(void)
+{
+	clk_cfg_info.aux_sel = REG_AON_APB_AON_CGM_CFG;
+	clk_cfg_info.aux_ena = REG_AON_APB_APB_EB1;
+	clk_cfg_info.aux_pin = SPRD_PIN_BASE + 0x2ec;
+
+	aux_debugfs_create();
+
+	if(clk_cfg_info.is_init_cfg)
+		aux_clk_config(clk_cfg_info.cur_sel & 0xf);
+	
+	return 0;
+}
+
+static void __exit aux_debug_exit(void)
+{
+	debugfs_remove_recursive(clk_cfg_info.debug_aux_dir);
+}
+module_init(aux_debug_init);
+module_exit(aux_debug_exit);