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authorSaurabh Mishra <mishra.saurabh@intel.com>2024-09-12 10:52:56 +0530
committerSubrata Banik <subratabanik@google.com>2024-09-13 08:23:55 +0000
commit95cf9c0052234cf19599c03ea214eff4a6ed3b65 (patch)
treedb9913d476eecffa50466c9df508524119ad29ff /src/soc/intel/pantherlake/soundwire.c
parent4ba9eeab08d3ab817b7751dc6f834148667ce065 (diff)
soc/intel/ptl: Do initial Panther Lake SoC commit till ramstage
List of changes: 1. Add required SoC programming till ramstage. 2. Include only required headers into include/soc. 3. Skeleton code used to call FSP-S API. BUG=b:348678529 TEST=Verified on Intel® Simics® Pre Silicon Simulation platform for PTL using google/fatcat mainboard. Change-Id: I61930726ad0c765bfa1d72c5df893262be884834 Signed-off-by: Saurabh Mishra <mishra.saurabh@intel.com> Reviewed-on: https://review.coreboot.org/c/coreboot/+/84332 Reviewed-by: Jérémy Compostella <jeremy.compostella@intel.com> Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Subrata Banik <subratabanik@google.com>
Diffstat (limited to 'src/soc/intel/pantherlake/soundwire.c')
-rw-r--r--src/soc/intel/pantherlake/soundwire.c72
1 files changed, 72 insertions, 0 deletions
diff --git a/src/soc/intel/pantherlake/soundwire.c b/src/soc/intel/pantherlake/soundwire.c
new file mode 100644
index 0000000000..ab1d0bc683
--- /dev/null
+++ b/src/soc/intel/pantherlake/soundwire.c
@@ -0,0 +1,72 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+
+#include <acpi/acpi_soundwire.h>
+#include <console/console.h>
+#include <device/mmio.h>
+#include <device/soundwire.h>
+#include <drivers/intel/soundwire/soundwire.h>
+#include <intelblocks/pmclib.h>
+#include <soc/pmc.h>
+#include <stddef.h>
+#include <string.h>
+
+static const struct soundwire_link link_xtal_38_4 = {
+ .clock_stop_mode0_supported = 1,
+ .clock_stop_mode1_supported = 1,
+ .clock_frequencies_supported_count = 1,
+ .clock_frequencies_supported = { 4800 * KHz },
+ .default_frame_rate = 48 * KHz,
+ .default_frame_row_size = 50,
+ .default_frame_col_size = 4,
+ .dynamic_frame_shape = 1,
+ .command_error_threshold = 16,
+};
+
+static const struct soundwire_link link_xtal_24 = {
+ .clock_stop_mode0_supported = 1,
+ .clock_stop_mode1_supported = 1,
+ .clock_frequencies_supported_count = 1,
+ .clock_frequencies_supported = { 6 * MHz },
+ .default_frame_rate = 48 * KHz,
+ .default_frame_row_size = 125,
+ .default_frame_col_size = 2,
+ .dynamic_frame_shape = 1,
+ .command_error_threshold = 16,
+};
+
+static struct intel_soundwire_controller intel_controller = {
+ .acpi_address = 0x40000000, /* Custom address for SNDW driver */
+ .sdw = {
+ .master_list_count = 4
+ }
+};
+
+int soc_fill_soundwire_controller(struct intel_soundwire_controller **controller)
+{
+ const struct soundwire_link *link;
+ enum pch_pmc_xtal xtal = pmc_get_xtal_freq();
+ size_t i;
+
+ /* Select link config based on XTAL frequency and set IP clock. */
+ switch (xtal) {
+ case XTAL_24_MHZ:
+ link = &link_xtal_24;
+ intel_controller.ip_clock = 24 * MHz;
+ break;
+ case XTAL_38_4_MHZ:
+ link = &link_xtal_38_4;
+ intel_controller.ip_clock = 38400 * KHz;
+ break;
+ case XTAL_19_2_MHZ:
+ default:
+ printk(BIOS_ERR, "%s: XTAL not supported: 0x%x\n", __func__, xtal);
+ return -1;
+ }
+
+ /* Fill link config in controller map based on selected XTAL. */
+ for (i = 0; i < intel_controller.sdw.master_list_count; i++)
+ memcpy(&intel_controller.sdw.master_list[i], link, sizeof(*link));
+
+ *controller = &intel_controller;
+ return 0;
+}