ALSA: hda/ca0132 - Add 8051 exram helper functions.

Add functions for both reading and writing to the 8051's exram. Also,
add a little bit of documentation on how the addresses are segmented.

Signed-off-by: Connor McAdams <conmanx360@gmail.com>
Link: https://lore.kernel.org/r/20201210160658.461739-4-conmanx360@gmail.com
Signed-off-by: Takashi Iwai <tiwai@suse.de>

1 files changed, 79 insertions, 58 deletions

diff --git a/sound/pci/hda/patch_ca0132.c b/sound/pci/hda/patch_ca0132.c
index 200cc0f8ac0e..f9fafd0f725b 100644
--- a/sound/pci/hda/patch_ca0132.c
+++ b/sound/pci/hda/patch_ca0132.c
@@ -1902,6 +1902,70 @@ static void chipio_8051_write_direct(struct hda_codec *codec,
 }
 
 /*
+ * Writes to the 8051's exram, which has 16-bits of address space.
+ * Data at addresses 0x2000-0x7fff is mirrored to 0x8000-0xdfff.
+ * Data at 0x8000-0xdfff can also be used as program memory for the 8051 by
+ * setting the pmem bank selection SFR.
+ * 0xe000-0xffff is always mapped as program memory, with only 0xf000-0xffff
+ * being writable.
+ */
+static void chipio_8051_set_address(struct hda_codec *codec, unsigned int addr)
+{
+	unsigned int tmp;
+
+	/* Lower 8-bits. */
+	tmp = addr & 0xff;
+	snd_hda_codec_write(codec, WIDGET_CHIP_CTRL, 0,
+			    VENDOR_CHIPIO_8051_ADDRESS_LOW, tmp);
+
+	/* Upper 8-bits. */
+	tmp = (addr >> 8) & 0xff;
+	snd_hda_codec_write(codec, WIDGET_CHIP_CTRL, 0,
+			    VENDOR_CHIPIO_8051_ADDRESS_HIGH, tmp);
+}
+
+static void chipio_8051_set_data(struct hda_codec *codec, unsigned int data)
+{
+	/* 8-bits of data. */
+	snd_hda_codec_write(codec, WIDGET_CHIP_CTRL, 0,
+			    VENDOR_CHIPIO_8051_DATA_WRITE, data & 0xff);
+}
+
+static unsigned int chipio_8051_get_data(struct hda_codec *codec)
+{
+	return snd_hda_codec_read(codec, WIDGET_CHIP_CTRL, 0,
+				   VENDOR_CHIPIO_8051_DATA_READ, 0);
+}
+
+static void chipio_8051_write_exram(struct hda_codec *codec,
+		unsigned int addr, unsigned int data)
+{
+	struct ca0132_spec *spec = codec->spec;
+
+	mutex_lock(&spec->chipio_mutex);
+
+	chipio_8051_set_address(codec, addr);
+	chipio_8051_set_data(codec, data);
+
+	mutex_unlock(&spec->chipio_mutex);
+}
+
+static void chipio_8051_write_exram_no_mutex(struct hda_codec *codec,
+		unsigned int addr, unsigned int data)
+{
+	chipio_8051_set_address(codec, addr);
+	chipio_8051_set_data(codec, data);
+}
+
+/* Readback data from the 8051's exram. No mutex. */
+static void chipio_8051_read_exram(struct hda_codec *codec,
+		unsigned int addr, unsigned int *data)
+{
+	chipio_8051_set_address(codec, addr);
+	*data = chipio_8051_get_data(codec);
+}
+
+/*
  * Enable clocks.
  */
 static void chipio_enable_clocks(struct hda_codec *codec)
@@ -7422,18 +7486,10 @@ static void ca0132_init_analog_mic2(struct hda_codec *codec)
 	struct ca0132_spec *spec = codec->spec;
 
 	mutex_lock(&spec->chipio_mutex);
-	snd_hda_codec_write(codec, WIDGET_CHIP_CTRL, 0,
-			    VENDOR_CHIPIO_8051_ADDRESS_LOW, 0x20);
-	snd_hda_codec_write(codec, WIDGET_CHIP_CTRL, 0,
-			    VENDOR_CHIPIO_8051_ADDRESS_HIGH, 0x19);
-	snd_hda_codec_write(codec, WIDGET_CHIP_CTRL, 0,
-			    VENDOR_CHIPIO_8051_DATA_WRITE, 0x00);
-	snd_hda_codec_write(codec, WIDGET_CHIP_CTRL, 0,
-			    VENDOR_CHIPIO_8051_ADDRESS_LOW, 0x2D);
-	snd_hda_codec_write(codec, WIDGET_CHIP_CTRL, 0,
-			    VENDOR_CHIPIO_8051_ADDRESS_HIGH, 0x19);
-	snd_hda_codec_write(codec, WIDGET_CHIP_CTRL, 0,
-			    VENDOR_CHIPIO_8051_DATA_WRITE, 0x00);
+
+	chipio_8051_write_exram_no_mutex(codec, 0x1920, 0x00);
+	chipio_8051_write_exram_no_mutex(codec, 0x192d, 0x00);
+
 	mutex_unlock(&spec->chipio_mutex);
 }
 
@@ -7504,18 +7560,11 @@ static void ca0132_refresh_widget_caps(struct hda_codec *codec)
 static void chipio_remap_stream(struct hda_codec *codec,
 		const struct chipio_stream_remap_data *remap_data)
 {
-	unsigned int i, stream_offset, tmp;
+	unsigned int i, stream_offset;
 
 	/* Get the starting port for the stream to be remapped. */
-	tmp = 0x1578 + remap_data->stream_id;
-	for (i = 0; i < 2; i++) {
-		snd_hda_codec_write(codec, WIDGET_CHIP_CTRL, 0,
-				    VENDOR_CHIPIO_8051_ADDRESS_LOW + i,
-				    ((tmp >> (i * 8)) & 0xff));
-	}
-
-	stream_offset = snd_hda_codec_read(codec, WIDGET_CHIP_CTRL, 0,
-				   VENDOR_CHIPIO_8051_DATA_READ, 0);
+	chipio_8051_read_exram(codec, 0x1578 + remap_data->stream_id,
+			&stream_offset);
 
 	/*
 	 * Check if the stream's port value is 0xff, because the 8051 may not
@@ -7526,9 +7575,8 @@ static void chipio_remap_stream(struct hda_codec *codec,
 		for (i = 0; i < 5; i++) {
 			msleep(25);
 
-			stream_offset = snd_hda_codec_read(codec,
-					WIDGET_CHIP_CTRL, 0,
-					VENDOR_CHIPIO_8051_DATA_READ, 0);
+			chipio_8051_read_exram(codec, 0x1578 + remap_data->stream_id,
+					&stream_offset);
 
 			if (stream_offset != 0xff)
 				break;
@@ -7863,12 +7911,7 @@ static void ae5_post_dsp_param_setup(struct hda_codec *codec)
 	snd_hda_codec_write(codec, WIDGET_CHIP_CTRL, 0, 0x724, 0x83);
 	chipio_set_control_param(codec, CONTROL_PARAM_ASI, 0);
 
-	snd_hda_codec_write(codec, WIDGET_CHIP_CTRL, 0,
-			    VENDOR_CHIPIO_8051_ADDRESS_LOW, 0x92);
-	snd_hda_codec_write(codec, WIDGET_CHIP_CTRL, 0,
-			    VENDOR_CHIPIO_8051_ADDRESS_HIGH, 0xfa);
-	snd_hda_codec_write(codec, WIDGET_CHIP_CTRL, 0,
-			    VENDOR_CHIPIO_8051_DATA_WRITE, 0x22);
+	chipio_8051_write_exram(codec, 0xfa92, 0x22);
 }
 
 static void ae5_post_dsp_pll_setup(struct hda_codec *codec)
@@ -8134,12 +8177,7 @@ static void ae7_post_dsp_asi_setup(struct hda_codec *codec)
 	chipio_set_control_param(codec, CONTROL_PARAM_ASI, 0);
 	snd_hda_codec_write(codec, 0x17, 0, 0x794, 0x00);
 
-	snd_hda_codec_write(codec, WIDGET_CHIP_CTRL, 0,
-			    VENDOR_CHIPIO_8051_ADDRESS_LOW, 0x92);
-	snd_hda_codec_write(codec, WIDGET_CHIP_CTRL, 0,
-			    VENDOR_CHIPIO_8051_ADDRESS_HIGH, 0xfa);
-	snd_hda_codec_write(codec, WIDGET_CHIP_CTRL, 0,
-			    VENDOR_CHIPIO_8051_DATA_WRITE, 0x22);
+	chipio_8051_write_exram(codec, 0xfa92, 0x22);
 
 	ae7_post_dsp_pll_setup(codec);
 	ae7_post_dsp_asi_stream_setup(codec);
@@ -9133,12 +9171,7 @@ static void r3d_pre_dsp_setup(struct hda_codec *codec)
 {
 	chipio_write(codec, 0x18b0a4, 0x000000c2);
 
-	snd_hda_codec_write(codec, WIDGET_CHIP_CTRL, 0,
-			    VENDOR_CHIPIO_8051_ADDRESS_LOW, 0x1E);
-	snd_hda_codec_write(codec, WIDGET_CHIP_CTRL, 0,
-			    VENDOR_CHIPIO_8051_ADDRESS_HIGH, 0x1C);
-	snd_hda_codec_write(codec, WIDGET_CHIP_CTRL, 0,
-			    VENDOR_CHIPIO_8051_DATA_WRITE, 0x5B);
+	chipio_8051_write_exram(codec, 0x1c1e, 0x5b);
 
 	snd_hda_codec_write(codec, 0x11, 0,
 			AC_VERB_SET_PIN_WIDGET_CONTROL, 0x44);
@@ -9148,21 +9181,9 @@ static void r3di_pre_dsp_setup(struct hda_codec *codec)
 {
 	chipio_write(codec, 0x18b0a4, 0x000000c2);
 
-	snd_hda_codec_write(codec, WIDGET_CHIP_CTRL, 0,
-			    VENDOR_CHIPIO_8051_ADDRESS_LOW, 0x1E);
-	snd_hda_codec_write(codec, WIDGET_CHIP_CTRL, 0,
-			    VENDOR_CHIPIO_8051_ADDRESS_HIGH, 0x1C);
-	snd_hda_codec_write(codec, WIDGET_CHIP_CTRL, 0,
-			    VENDOR_CHIPIO_8051_DATA_WRITE, 0x5B);
-
-	snd_hda_codec_write(codec, WIDGET_CHIP_CTRL, 0,
-			    VENDOR_CHIPIO_8051_ADDRESS_LOW, 0x20);
-	snd_hda_codec_write(codec, WIDGET_CHIP_CTRL, 0,
-			    VENDOR_CHIPIO_8051_ADDRESS_HIGH, 0x19);
-	snd_hda_codec_write(codec, WIDGET_CHIP_CTRL, 0,
-			    VENDOR_CHIPIO_8051_DATA_WRITE, 0x00);
-	snd_hda_codec_write(codec, WIDGET_CHIP_CTRL, 0,
-			    VENDOR_CHIPIO_8051_DATA_WRITE, 0x40);
+	chipio_8051_write_exram(codec, 0x1c1e, 0x5b);
+	chipio_8051_write_exram(codec, 0x1920, 0x00);
+	chipio_8051_write_exram(codec, 0x1921, 0x40);
 
 	snd_hda_codec_write(codec, 0x11, 0,
 			AC_VERB_SET_PIN_WIDGET_CONTROL, 0x04);