asix-sigma: add support for external clock

[libsigrok.git] / src / hardware / asix-sigma / protocol.h

diff --git a/src/hardware/asix-sigma/protocol.h b/src/hardware/asix-sigma/protocol.h
index e017c6b5059ee24cd426ad0638b617eda08cf94f..406f9e4d140817bba31fd196ddf2cf9cf8b46e3e 100644 (file)
--- a/src/hardware/asix-sigma/protocol.h
+++ b/src/hardware/asix-sigma/protocol.h
@@ -124,6 +124,37 @@ enum sigma_read_register {
        READ_TEST               = 15,
 };
 
+#define HI4(b)                 (((b) >> 4) & 0x0f)
+#define LO4(b)                 (((b) >> 0) & 0x0f)
+
+#define BIT_MASK(l)    ((1UL << (l)) - 1)
+
+#define CLKSEL_CLKSEL8         (1 << 0)
+#define CLKSEL_PINMASK         BIT_MASK(4)
+#define CLKSEL_RISING          (1 << 4)
+#define CLKSEL_FALLING         (1 << 5)
+
+#define TRGSEL_SELINC_MASK     BIT_MASK(2)
+#define TRGSEL_SELINC_SHIFT    0
+#define TRGSEL_SELRES_MASK     BIT_MASK(2)
+#define TRGSEL_SELRES_SHIFT    2
+#define TRGSEL_SELA_MASK       BIT_MASK(2)
+#define TRGSEL_SELA_SHIFT      4
+#define TRGSEL_SELB_MASK       BIT_MASK(2)
+#define TRGSEL_SELB_SHIFT      6
+#define TRGSEL_SELC_MASK       BIT_MASK(2)
+#define TRGSEL_SELC_SHIFT      8
+#define TRGSEL_SELPRESC_MASK   BIT_MASK(4)
+#define TRGSEL_SELPRESC_SHIFT  12
+
+enum trgsel_selcode_t {
+       TRGSEL_SELCODE_LEVEL = 0,
+       TRGSEL_SELCODE_FALL = 1,
+       TRGSEL_SELCODE_RISE = 2,
+       TRGSEL_SELCODE_EVENT = 3,
+       TRGSEL_SELCODE_NEVER = 3,
+};
+
 #define TRGSEL2_PINS_MASK      (0x07 << 0)
 #define TRGSEL2_PINPOL_RISE    (1 << 3)
 #define TRGSEL2_LUT_ADDR_MASK  (0x0f << 0)
@@ -241,7 +272,7 @@ struct triggerinout {
 struct triggerlut {
        /* The actual LUTs. */
        uint16_t m0d[4], m1d[4], m2d[4];
-       uint16_t m3, m3s, m4;
+       uint16_t m3q, m3s, m4;
 
        /* Parameters should be sent as a single register write. */
        struct {
@@ -315,6 +346,12 @@ enum sigma_firmware_idx {
        SIGMA_FW_FREQ,
 };
 
+enum ext_clock_edge_t {
+       SIGMA_CLOCK_EDGE_RISING,
+       SIGMA_CLOCK_EDGE_FALLING,
+       SIGMA_CLOCK_EDGE_EITHER,
+};
+
 struct submit_buffer;
 
 struct dev_context {
@@ -328,7 +365,12 @@ struct dev_context {
                struct ftdi_context ctx;
                gboolean is_open, must_close;
        } ftdi;
-       uint64_t samplerate;
+       struct {
+               uint64_t samplerate;
+               gboolean use_ext_clock;
+               size_t clock_pin;
+               enum ext_clock_edge_t clock_edge;
+       } clock;
        struct sr_sw_limits cfg_limits; /* Configured limits (user specified). */
        struct sr_sw_limits acq_limits; /* Acquisition limits (internal use). */
        struct sr_sw_limits feed_limits; /* Datafeed limits (internal use). */