Accessiblity: speakup_decpc: specifying the default driver parameters among the module params

This is an enhancement which allows to specify the default driver
parameters among the module parameters.

Adding default variables to the speakup_decpc module
allows to easily set that at boot, rather than
setting the sys variables after boot.
More details can be found here:
https://github.com/linux-speakup/speakup/issues/7

Signed-off-by: Osama Muhammad <[e-mail]>
Reviewed-by: Samuel Thibault <[e-mail]>
Link: https://lore.kernel.org/r/[e-mail]
Signed-off-by: Greg Kroah-Hartman <[e-mail]>

drivers/accessibility/speakup/speakup_decpc.c

···
 static int in_escape, is_flushing;
 static int dt_stat, dma_state;
 
-static struct var_t vars[] = {
-	{ CAPS_START, .u.s = {"[:dv ap 200]" } },
-	{ CAPS_STOP, .u.s = {"[:dv ap 100]" } },
-	{ RATE, .u.n = {"[:ra %d]", 9, 0, 18, 150, 25, NULL } },
-	{ PITCH, .u.n = {"[:dv ap %d]", 80, 0, 100, 20, 0, NULL } },
-	{ INFLECTION, .u.n = {"[:dv pr %d] ", 100, 0, 10000, 0, 0, NULL } },
-	{ VOL, .u.n = {"[:vo se %d]", 5, 0, 9, 5, 10, NULL } },
-	{ PUNCT, .u.n = {"[:pu %c]", 0, 0, 2, 0, 0, "nsa" } },
-	{ VOICE, .u.n = {"[:n%c]", 0, 0, 9, 0, 0, "phfdburwkv" } },
-	{ DIRECT, .u.n = {NULL, 0, 0, 1, 0, 0, NULL } },
+
+enum default_vars_id {
+	CAPS_START_ID = 0, CAPS_STOP_ID,
+	RATE_ID, PITCH_ID, INFLECTION_ID,
+	VOL_ID, PUNCT_ID, VOICE_ID,
+	DIRECT_ID, V_LAST_VAR_ID,
+	NB_ID,
+};
+
+
+
+static struct var_t vars[NB_ID] = {
+	[CAPS_START_ID] = { CAPS_START, .u.s = {"[:dv ap 200]" } },
+	[CAPS_STOP_ID] = { CAPS_STOP, .u.s = {"[:dv ap 100]" } },
+	[RATE_ID] = { RATE, .u.n = {"[:ra %d]", 9, 0, 18, 150, 25, NULL } },
+	[PITCH_ID] = { PITCH, .u.n = {"[:dv ap %d]", 80, 0, 100, 20, 0, NULL } },
+	[INFLECTION_ID] = { INFLECTION, .u.n = {"[:dv pr %d] ", 100, 0, 10000, 0, 0, NULL } },
+	[VOL_ID] = { VOL, .u.n = {"[:vo se %d]", 5, 0, 9, 5, 10, NULL } },
+	[PUNCT_ID] = { PUNCT, .u.n = {"[:pu %c]", 0, 0, 2, 0, 0, "nsa" } },
+	[VOICE_ID] = { VOICE, .u.n = {"[:n%c]", 0, 0, 9, 0, 0, "phfdburwkv" } },
+	[DIRECT_ID] = { DIRECT, .u.n = {NULL, 0, 0, 1, 0, 0, NULL } },
 	V_LAST_VAR
 };
 
···
 }
 
 module_param_named(start, synth_dec_pc.startup, short, 0444);
+module_param_named(rate, vars[RATE_ID].u.n.default_val, int, 0444);
+module_param_named(pitch, vars[PITCH_ID].u.n.default_val, int, 0444);
+module_param_named(inflection, vars[INFLECTION_ID].u.n.default_val, int, 0444);
+module_param_named(vol, vars[VOL_ID].u.n.default_val, int, 0444);
+module_param_named(punct, vars[PUNCT_ID].u.n.default_val, int, 0444);
+module_param_named(voice, vars[VOICE_ID].u.n.default_val, int, 0444);
+module_param_named(direct, vars[DIRECT_ID].u.n.default_val, int, 0444);
+
+
+
 
 MODULE_PARM_DESC(start, "Start the synthesizer once it is loaded.");
+MODULE_PARM_DESC(rate, "Set the rate variable on load.");
+MODULE_PARM_DESC(pitch, "Set the pitch variable on load.");
+MODULE_PARM_DESC(inflection, "Set the inflection variable on load.");
+MODULE_PARM_DESC(vol, "Set the vol variable on load.");
+MODULE_PARM_DESC(punct, "Set the punct variable on load.");
+MODULE_PARM_DESC(voice, "Set the voice variable on load.");
+MODULE_PARM_DESC(direct, "Set the direct variable on load.");
 
 module_spk_synth(synth_dec_pc);