Accessiblity: speakup_dtlk: 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_dtlk 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 <osmtendev@gmail.com>
Reviewed-by: Samuel Thibault <samuel.thibault@ens-lyon.org>
Link: https://lore.kernel.org/r/20221109215108.7933-9-osmtendev@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

1 files changed, 39 insertions, 11 deletions

diff --git a/drivers/accessibility/speakup/speakup_dtlk.c b/drivers/accessibility/speakup/speakup_dtlk.c
index 6f01e010aaf4..fa826568937b 100644
--- a/drivers/accessibility/speakup/speakup_dtlk.c
+++ b/drivers/accessibility/speakup/speakup_dtlk.c
@@ -37,17 +37,27 @@ static unsigned int synth_portlist[] = {
 
 static u_char synth_status;
 
-static struct var_t vars[] = {
-	{ CAPS_START, .u.s = {"\x01+35p" } },
-	{ CAPS_STOP, .u.s = {"\x01-35p" } },
-	{ RATE, .u.n = {"\x01%ds", 8, 0, 9, 0, 0, NULL } },
-	{ PITCH, .u.n = {"\x01%dp", 50, 0, 99, 0, 0, NULL } },
-	{ VOL, .u.n = {"\x01%dv", 5, 0, 9, 0, 0, NULL } },
-	{ TONE, .u.n = {"\x01%dx", 1, 0, 2, 0, 0, NULL } },
-	{ PUNCT, .u.n = {"\x01%db", 7, 0, 15, 0, 0, NULL } },
-	{ VOICE, .u.n = {"\x01%do", 0, 0, 7, 0, 0, NULL } },
-	{ FREQUENCY, .u.n = {"\x01%df", 5, 0, 9, 0, 0, NULL } },
-	{ 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,
+	VOL_ID, TONE_ID, PUNCT_ID,
+	VOICE_ID, FREQUENCY_ID,
+	DIRECT_ID, V_LAST_VAR_ID,
+	NB_ID,
+};
+
+
+static struct var_t vars[NB_ID] = {
+	[CAPS_START_ID] = { CAPS_START, .u.s = {"\x01+35p" } },
+	[CAPS_STOP_ID] = { CAPS_STOP, .u.s = {"\x01-35p" } },
+	[RATE_ID] = { RATE, .u.n = {"\x01%ds", 8, 0, 9, 0, 0, NULL } },
+	[PITCH_ID] = { PITCH, .u.n = {"\x01%dp", 50, 0, 99, 0, 0, NULL } },
+	[VOL_ID] = { VOL, .u.n = {"\x01%dv", 5, 0, 9, 0, 0, NULL } },
+	[TONE_ID] = { TONE, .u.n = {"\x01%dx", 1, 0, 2, 0, 0, NULL } },
+	[PUNCT_ID] = { PUNCT, .u.n = {"\x01%db", 7, 0, 15, 0, 0, NULL } },
+	[VOICE_ID] = { VOICE, .u.n = {"\x01%do", 0, 0, 7, 0, 0, NULL } },
+	[FREQUENCY_ID] = { FREQUENCY, .u.n = {"\x01%df", 5, 0, 9, 0, 0, NULL } },
+	[DIRECT_ID] = { DIRECT, .u.n = {NULL, 0, 0, 1, 0, 0, NULL } },
 	V_LAST_VAR
 };
 
@@ -376,9 +386,27 @@ static void dtlk_release(struct spk_synth *synth)
 
 module_param_hw_named(port, port_forced, int, ioport, 0444);
 module_param_named(start, synth_dtlk.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(vol, vars[VOL_ID].u.n.default_val, int, 0444);
+module_param_named(tone, vars[TONE_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(frequency, vars[FREQUENCY_ID].u.n.default_val, int, 0444);
+module_param_named(direct, vars[DIRECT_ID].u.n.default_val, int, 0444);
+
 
 MODULE_PARM_DESC(port, "Set the port for the synthesizer (override probing).");
 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(vol, "Set the vol variable on load.");
+MODULE_PARM_DESC(tone, "Set the tone 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(frequency, "Set the frequency variable on load.");
+MODULE_PARM_DESC(direct, "Set the direct variable on load.");
+
 
 module_spk_synth(synth_dtlk);