module_param(debug, uint, 0644);
MODULE_PARM_DESC(debug, "1=err, 2=isr, 3=xfer");
+static unsigned int clk_tout_ms = 35; /* SMBUs-recommended 35ms */
+module_param(clk_tout_ms, uint, 0644);
+MODULE_PARM_DESC(clk_tout_ms, "clock-stretch timeout (mS)");
+
#define BCM2835_DEBUG_MAX 512
struct bcm2835_debug {
struct i2c_msg *msg;
(redl << BCM2835_I2C_REDL_SHIFT));
/*
- * Set the clock stretch timeout to the SMBUs-recommended 35ms.
+ * Set the clock stretch timeout.
*/
- if (rate > 0xffff*1000/35)
+ if (rate > 0xffff*1000/clk_tout_ms)
clk_tout = 0xffff;
else
- clk_tout = 35*rate/1000;
+ clk_tout = clk_tout_ms*rate/1000;
bcm2835_i2c_writel(div->i2c_dev, BCM2835_I2C_CLKT, clk_tout);