linux-kernel - [PATCH] Accessiblity: speakup_audptr: specifying the default driver parameters among the module params

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Message-Id: <20221021135309.251891-1-osmtendev@gmail.com>
Date:   Fri, 21 Oct 2022 18:53:09 +0500
From:   Osama Muhammad <osmtendev@...il.com>
To:     samuel.thibault@...-lyon.org
Cc:     gregkh@...uxfoundation.org, speakup@...ux-speakup.org,
        linux-kernel@...r.kernel.org, Osama Muhammad <osmtendev@...il.com>
Subject: [PATCH] Accessiblity: speakup_audptr: 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_audptr 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@...il.com>
---
 .../accessibility/speakup/speakup_audptr.c    | 42 +++++++++++++++----
 1 file changed, 33 insertions(+), 9 deletions(-)

diff --git a/drivers/accessibility/speakup/speakup_audptr.c b/drivers/accessibility/speakup/speakup_audptr.c
index 4d16d60db9b2..55813f3e40ff 100644
--- a/drivers/accessibility/speakup/speakup_audptr.c
+++ b/drivers/accessibility/speakup/speakup_audptr.c
@@ -19,15 +19,24 @@
 static int synth_probe(struct spk_synth *synth);
 static void synth_flush(struct spk_synth *synth);
 
-static struct var_t vars[] = {
-	{ CAPS_START, .u.s = {"\x05[f99]" } },
-	{ CAPS_STOP, .u.s = {"\x05[f80]" } },
-	{ RATE, .u.n = {"\x05[r%d]", 10, 0, 20, 100, -10, NULL } },
-	{ PITCH, .u.n = {"\x05[f%d]", 80, 39, 4500, 0, 0, NULL } },
-	{ VOL, .u.n = {"\x05[g%d]", 21, 0, 40, 0, 0, NULL } },
-	{ TONE, .u.n = {"\x05[s%d]", 9, 0, 63, 0, 0, NULL } },
-	{ PUNCT, .u.n = {"\x05[A%c]", 0, 0, 3, 0, 0, "nmsa" } },
-	{ 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,
+	DIRECT_ID, V_LAST_VAR_ID,
+	NB_ID
+};
+
+static struct var_t vars[NB_ID] = {
+	[CAPS_START_ID] = { CAPS_START, .u.s = {"\x05[f99]" } },
+	[CAPS_STOP_ID] = { CAPS_STOP, .u.s = {"\x05[f80]" } },
+	[RATE_ID] = { RATE, .u.n = {"\x05[r%d]", 10, 0, 20, 100, -10, NULL } },
+	[PITCH_ID] = { PITCH, .u.n = {"\x05[f%d]", 80, 39, 4500, 0, 0, NULL } },
+	[VOL_ID] = { VOL, .u.n = {"\x05[g%d]", 21, 0, 40, 0, 0, NULL } },
+	[TONE_ID] = { TONE, .u.n = {"\x05[s%d]", 9, 0, 63, 0, 0, NULL } },
+	[PUNCT_ID] = { PUNCT, .u.n = {"\x05[A%c]", 0, 0, 3, 0, 0, "nmsa" } },
+	[DIRECT_ID] = { DIRECT, .u.n = {NULL, 0, 0, 1, 0, 0, NULL } },
 	V_LAST_VAR
 };
 
@@ -158,10 +167,25 @@ static int synth_probe(struct spk_synth *synth)
 module_param_named(ser, synth_audptr.ser, int, 0444);
 module_param_named(dev, synth_audptr.dev_name, charp, 0444);
 module_param_named(start, synth_audptr.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(direct, vars[DIRECT_ID].u.n.default_val, int, 0444);
+
+
 
 MODULE_PARM_DESC(ser, "Set the serial port for the synthesizer (0-based).");
 MODULE_PARM_DESC(dev, "Set the device e.g. ttyUSB0, for the synthesizer.");
 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(direct, "Set the direct variable on load.");
+
 
 module_spk_synth(synth_audptr);
 
-- 
2.25.1