Add acp i2s master clock generation logic for rembrandt platform.
Signed-off-by: V Sujith Kumar Reddy vsujithkumar.reddy@amd.com Signed-off-by: Syed Saba Kareem Syed.SabaKareem@amd.com --- sound/soc/amd/acp/acp-legacy-common.c | 19 +++++++++++++++++++ sound/soc/amd/acp/acp-rembrandt.c | 26 ++++++++++++++++++++++++++ sound/soc/amd/acp/amd.h | 3 +++ 3 files changed, 48 insertions(+)
diff --git a/sound/soc/amd/acp/acp-legacy-common.c b/sound/soc/amd/acp/acp-legacy-common.c index 5b7000eae693..4302d8db88a4 100644 --- a/sound/soc/amd/acp/acp-legacy-common.c +++ b/sound/soc/amd/acp/acp-legacy-common.c @@ -13,6 +13,7 @@ */
#include "amd.h" +#include <linux/pci.h> #include <linux/export.h>
static int acp_power_on(struct acp_chip_info *chip) @@ -96,4 +97,22 @@ int acp_deinit(void __iomem *base) } EXPORT_SYMBOL_NS_GPL(acp_deinit, SND_SOC_ACP_COMMON);
+int smn_write(struct pci_dev *dev, u32 smn_addr, u32 data) +{ + pci_write_config_dword(dev, 0x60, smn_addr); + pci_write_config_dword(dev, 0x64, data); + return 0; +} +EXPORT_SYMBOL_NS_GPL(smn_write, SND_SOC_ACP_COMMON); + +int smn_read(struct pci_dev *dev, u32 smn_addr) +{ + u32 data; + + pci_write_config_dword(dev, 0x60, smn_addr); + pci_read_config_dword(dev, 0x64, &data); + return data; +} +EXPORT_SYMBOL_NS_GPL(smn_read, SND_SOC_ACP_COMMON); + MODULE_LICENSE("Dual BSD/GPL"); diff --git a/sound/soc/amd/acp/acp-rembrandt.c b/sound/soc/amd/acp/acp-rembrandt.c index 59b1653b8479..83515ee753f3 100644 --- a/sound/soc/amd/acp/acp-rembrandt.c +++ b/sound/soc/amd/acp/acp-rembrandt.c @@ -19,11 +19,17 @@ #include <sound/soc.h> #include <sound/soc-dai.h> #include <linux/dma-mapping.h> +#include <linux/pci.h>
#include "amd.h"
#define DRV_NAME "acp_asoc_rembrandt"
+#define MP1_C2PMSG_69 0x3B10A14 +#define MP1_C2PMSG_85 0x3B10A54 +#define MP1_C2PMSG_93 0x3B10A74 +#define HOST_BRIDGE_ID 0x14B5 + static struct acp_resource rsrc = { .offset = 0, .no_of_ctrls = 2, @@ -160,6 +166,25 @@ static struct snd_soc_dai_driver acp_rmb_dai[] = { }, };
+int acp6x_master_clock_generate(struct device *dev) +{ + int data = 0; + struct pci_dev *smn_dev; + + smn_dev = pci_get_device(PCI_VENDOR_ID_AMD, HOST_BRIDGE_ID, NULL); + if (!smn_dev) { + dev_err(dev, "Failed to get host bridge device\n"); + return -ENODEV; + } + + smn_write(smn_dev, MP1_C2PMSG_93, 0); + smn_write(smn_dev, MP1_C2PMSG_85, 0xC4); + smn_write(smn_dev, MP1_C2PMSG_69, 0x4); + read_poll_timeout(smn_read, data, data, DELAY_US, + ACP_TIMEOUT, false, smn_dev, MP1_C2PMSG_93); + return 0; +} + static void acp6x_enable_interrupts(struct acp_dev_data *adata) { struct acp_resource *rsrc = adata->rsrc; @@ -228,6 +253,7 @@ static int rembrandt_audio_probe(struct platform_device *pdev) acp_machine_select(adata);
dev_set_drvdata(dev, adata); + acp6x_master_clock_generate(dev); acp6x_enable_interrupts(adata); acp_platform_register(dev);
diff --git a/sound/soc/amd/acp/amd.h b/sound/soc/amd/acp/amd.h index 83c9a3ba8584..96bd87290eee 100644 --- a/sound/soc/amd/acp/amd.h +++ b/sound/soc/amd/acp/amd.h @@ -187,6 +187,9 @@ int acp_platform_unregister(struct device *dev);
int acp_machine_select(struct acp_dev_data *adata);
+int smn_read(struct pci_dev *dev, u32 smn_addr); +int smn_write(struct pci_dev *dev, u32 smn_addr, u32 data); + int acp_init(struct acp_chip_info *chip); int acp_deinit(void __iomem *base); /* Machine configuration */