ALSA: hda: Program STRIPE CTL bit

For Multiple SOR usecases, need to program Stripe Control bit
field to support the required outbound bandwidth for e.g
192Khz,24bit,8ch on all SOR needs stripe to be increased to 2/4
for increasing the bw for the outbound streams.

Also as per HDA spec no.of stripes chosen based on below criteria

For sample rate > 48Khz
    (no.of channels * bits_per_samples *(rate/48000))/stripe >=8

For Sample rate <= 48Khz
    (no.of channels * bits_per_samples)/stripe >= 8

Bug 200317644

Change-Id: I1627a668c3280d3565a805b32c683f42983d391c
Signed-off-by: Mohan Kumar <mkumard@nvidia.com>
Reviewed-on: https://git-master/r/1500324
(cherry picked from commit 27fce94e169a08b0f25892bad5c5b47af09d33d4)
Reviewed-on: https://git-master/r/1510177
GVS: Gerrit_Virtual_Submit
Reviewed-by: Ravindra Lokhande <rlokhande@nvidia.com>

1 files changed, 11 insertions, 0 deletions

diff --git a/sound/pci/hda/hda_tegra.c b/sound/pci/hda/hda_tegra.c
index 1c1402491..e256b6a8a 100644
--- a/sound/pci/hda/hda_tegra.c
+++ b/sound/pci/hda/hda_tegra.c
@@ -81,6 +81,8 @@ static struct of_device_id tegra_disb_pd[] = {
 #define NUM_CAPTURE_SD 1
 #define NUM_PLAYBACK_SD 1
 
+#define MAX_SDO_LINES   4
+
 struct hda_tegra {
         struct azx chip;
         struct device *dev;
@@ -91,6 +93,7 @@ struct hda_tegra {
         void __iomem *regs;
         struct work_struct probe_work;
         bool is_power_on;
+        unsigned int max_sdo_lines;
 };
 
 #ifdef CONFIG_PM
@@ -450,6 +453,7 @@ static int hda_tegra_init_chip(struct azx *chip, struct platform_device *pdev)
 
         bus->remap_addr = hda->regs + HDA_BAR0;
         bus->addr = res->start + HDA_BAR0;
+        bus->max_sdo_lines = hda->max_sdo_lines;
 
         hda_tegra_init(hda);
 
@@ -600,6 +604,13 @@ static int hda_tegra_probe(struct platform_device *pdev)
         chip = &hda->chip;
         hda->is_power_on = false;
 
+        if (of_property_read_u32(pdev->dev.of_node,
+                        "max-sdo-lines", &hda->max_sdo_lines) < 0)
+                hda->max_sdo_lines = 1;
+
+        if (hda->max_sdo_lines > MAX_SDO_LINES)
+                hda->max_sdo_lines = MAX_SDO_LINES;
+
         hda->partition_id = tegra_pd_get_powergate_id(tegra_disb_pd);
         if (hda->partition_id < 0) {
                 dev_err(&pdev->dev, "Failed to get hda power domain id\n");