use COMMAND_HANDLER macro to define all commands

[fw/openocd] / src / jtag / parport.c

diff --git a/src/jtag/parport.c b/src/jtag/parport.c
index fdf7df4da0de60a4bc31c1010f8f77f60ae6c146..cee7a16956c44d910f0220e1cc618db016835404 100644 (file)
--- a/src/jtag/parport.c
+++ b/src/jtag/parport.c
@@ -105,6 +105,8 @@ static cable_t cables[] =
 static char* parport_cable = NULL;
 static uint16_t parport_port;
 static int parport_exit = 0;
+static uint32_t parport_toggling_time_ns = 1000;
+static int wait_states;
 
 /* interface variables
  */
@@ -152,7 +154,7 @@ static __inline__ void parport_write_data(void)
 
 static void parport_write(int tck, int tms, int tdi)
 {
-       int i = jtag_get_speed() + 1;
+       int i = wait_states + 1;
 
        if (tck)
                dataport_value |= cable->TCK_MASK;
@@ -204,6 +206,26 @@ static void parport_led(int on)
 
 static int parport_speed(int speed)
 {
+       wait_states = speed;
+       return ERROR_OK;
+}
+
+static int parport_khz(int khz, int* jtag_speed)
+{
+       if (khz == 0) {
+               LOG_DEBUG("RCLK not supported");
+               return ERROR_FAIL;
+       }
+
+       *jtag_speed = 499999 / (khz * parport_toggling_time_ns);
+       return ERROR_OK;
+}
+
+static int parport_speed_div(int speed, int* khz)
+{
+       uint32_t denominator = (speed + 1) * parport_toggling_time_ns;
+
+       *khz = (499999 + denominator) / denominator;
        return ERROR_OK;
 }
 
@@ -364,6 +386,8 @@ static int parport_init(void)
 
        bitbang_interface = &parport_bitbang;
 
+       wait_states = jtag_get_speed();
+
        return ERROR_OK;
 }
 
@@ -386,7 +410,7 @@ static int parport_quit(void)
        return ERROR_OK;
 }
 
-static int parport_handle_parport_port_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
+COMMAND_HANDLER(parport_handle_parport_port_command)
 {
        if (argc == 1)
        {
@@ -407,7 +431,7 @@ static int parport_handle_parport_port_command(struct command_context_s *cmd_ctx
        return ERROR_OK;
 }
 
-static int parport_handle_parport_cable_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
+COMMAND_HANDLER(parport_handle_parport_cable_command)
 {
        if (argc == 0)
                return ERROR_OK;
@@ -422,7 +446,7 @@ static int parport_handle_parport_cable_command(struct command_context_s *cmd_ct
        return ERROR_OK;
 }
 
-static int parport_handle_write_on_exit_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
+COMMAND_HANDLER(parport_handle_write_on_exit_command)
 {
        if (argc != 1)
        {
@@ -438,6 +462,32 @@ static int parport_handle_write_on_exit_command(struct command_context_s *cmd_ct
        return ERROR_OK;
 }
 
+static int
+parport_handle_parport_toggling_time_command(struct command_context_s *cmd_ctx,
+               char *cmd, char **args, int argc)
+{
+       if (argc == 1) {
+               uint32_t ns;
+               int retval = parse_u32(args[0], &ns);
+
+               if (ERROR_OK != retval)
+                       return retval;
+
+               if (ns == 0) {
+                       LOG_ERROR("0 ns is not a valid parport toggling time");
+                       return ERROR_FAIL;
+               }
+
+               parport_toggling_time_ns = ns;
+               wait_states = jtag_get_speed();
+       }
+
+       command_print(cmd_ctx, "parport toggling time = %" PRIu32 " ns",
+                       parport_toggling_time_ns);
+
+       return ERROR_OK;
+}
+
 static int parport_register_commands(struct command_context_s *cmd_ctx)
 {
        register_command(cmd_ctx, NULL, "parport_port",
@@ -455,14 +505,20 @@ static int parport_register_commands(struct command_context_s *cmd_ctx)
                        "configure the parallel driver to write "
                        "a known value to the parallel interface");
 
+       register_command(cmd_ctx, NULL, "parport_toggling_time",
+                       parport_handle_parport_toggling_time_command, COMMAND_ANY,
+                       "time <ns> it takes for the hardware to toggle TCK");
+
        return ERROR_OK;
 }
 
 jtag_interface_t parport_interface = {
-               .name = "parport",
-               .register_commands = &parport_register_commands,
-               .init = &parport_init,
-               .quit = &parport_quit,
-               .speed = &parport_speed,
-               .execute_queue = &bitbang_execute_queue,
-       };
+       .name =                 "parport",
+       .register_commands =    parport_register_commands,
+       .init =                 parport_init,
+       .quit =                 parport_quit,
+       .khz =                  parport_khz,
+       .speed_div =            parport_speed_div,
+       .speed =                parport_speed,
+       .execute_queue =        bitbang_execute_queue,
+};