tools/: new libatrf function atrf_slp_tr to control SLP_TR (for now only atben)

- include/atrf.h, lib/atrf.c (atrf_slp_tr): new function to set the SLP_TR
  line
- lib/driver.h (struct atrf_driver): added driver function slp_tr
- lib/atusb.c (atusb_driver): we dont support slp_tr yet
- lib/atben.c (atben_slp_tr, atben_driver): implement SLP_TR control

tools/include/atrf.h

@@ -40,6 +40,7 @@ void atrf_reset_rf(struct atrf_dsc *dsc);
 enum atrf_chip_id atrf_identify(struct atrf_dsc *dsc);
 
 int atrf_test_mode(struct atrf_dsc *dsc);
+int atrf_slp_tr(struct atrf_dsc *dsc, int on);
 int atrf_set_clkm(struct atrf_dsc *dsc, int mhz);
 
 void atrf_reg_write(struct atrf_dsc *dsc, uint8_t reg, uint8_t value);

tools/lib/atben.c

@@ -326,6 +326,20 @@ static int atben_buf_read(void *handle, void *buf, int size)
 }
 
 
+/* ----- SLP_TR ------------------------------------------------------------ */
+
+
+static void atben_slp_tr(void *handle, int on)
+{
+	struct atben_dsc *dsc = handle;
+
+	if (on)
+		PDDATS = SLP_TR;
+	else
+		PDDATC = SLP_TR;
+}
+
+
 /* ----- RF interrupt ------------------------------------------------------ */
 
 
@@ -347,6 +361,7 @@ struct atrf_driver atben_driver = {
 	.reset		= NULL,
 	.reset_rf	= atben_reset_rf,
 	.test_mode	= NULL,
+	.slp_tr		= atben_slp_tr,
 	.reg_write	= atben_reg_write,
 	.reg_read	= atben_reg_read,
 	.buf_write	= atben_buf_write,

tools/lib/atrf.c

@@ -149,6 +149,15 @@ int atrf_test_mode(struct atrf_dsc *dsc)
 }
 
 
+int atrf_slp_tr(struct atrf_dsc *dsc, int on)
+{
+	if (!dsc->driver->slp_tr)
+		return 0;
+	dsc->driver->slp_tr(dsc->handle, on);
+	return 1;
+}
+
+
 int atrf_set_clkm_generic(
     void (*reg_write)(void *dsc, uint8_t reg, uint8_t value),
     void *handle, int mhz)

tools/lib/atusb.c

@@ -281,6 +281,7 @@ struct atrf_driver atusb_driver = {
 	.reset		= atusb_reset,
 	.reset_rf	= atusb_reset_rf,
 	.test_mode	= atusb_test_mode,
+	.slp_tr		= NULL,	/* @@@ not yet *
 	.set_clkm	= atusb_set_clkm,
 	.reg_write	= atusb_reg_write,
 	.reg_read	= atusb_reg_read,

tools/lib/driver.h

@@ -26,6 +26,7 @@ struct atrf_driver {
 	void (*reset)(void *dsc);
 	void (*reset_rf)(void *dsc);
 	void (*test_mode)(void *dsc);
+	void (*slp_tr)(void *dsc, int on);
 	int (*set_clkm)(void *dsc, int mhz);
 	void (*reg_write)(void *dsc, uint8_t reg, uint8_t value);
 	uint8_t (*reg_read)(void *dsc, uint8_t reg);