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authorShyam Sundar S K <Shyam-sundar.S-k@amd.com>2023-12-28 13:21:04 +0300
committerHans de Goede <hdegoede@redhat.com>2024-01-02 15:40:31 +0300
commit236f7d8034ff401d02fa6d74bae494a2b54e1834 (patch)
treea92ce1c102ea26366b9281aa35f828ef25cecda4 /drivers/platform
parentd33e992ec87a7a7b1839fac38573d2c0721569f9 (diff)
downloadlinux-236f7d8034ff401d02fa6d74bae494a2b54e1834.tar.xz
platform/x86/amd/pmc: Modify SMU message port for latest AMD platform
The latest platforms use a different SMU message port(0x938) from the one currently being used (0x538). Make code changes to adapt to this new information. Signed-off-by: Sanket Goswami <Sanket.Goswami@amd.com> Signed-off-by: Shyam Sundar S K <Shyam-sundar.S-k@amd.com> Reviewed-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com> Link: https://lore.kernel.org/r/20231228102104.1785383-7-Shyam-sundar.S-k@amd.com Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Diffstat (limited to 'drivers/platform')
-rw-r--r--drivers/platform/x86/amd/pmc/pmc.c8
-rw-r--r--drivers/platform/x86/amd/pmc/pmc.h1
2 files changed, 6 insertions, 3 deletions
diff --git a/drivers/platform/x86/amd/pmc/pmc.c b/drivers/platform/x86/amd/pmc/pmc.c
index 3845cbd17f71..108e12fd580f 100644
--- a/drivers/platform/x86/amd/pmc/pmc.c
+++ b/drivers/platform/x86/amd/pmc/pmc.c
@@ -31,7 +31,6 @@
#include "pmc.h"
/* SMU communication registers */
-#define AMD_PMC_REGISTER_MESSAGE 0x538
#define AMD_PMC_REGISTER_RESPONSE 0x980
#define AMD_PMC_REGISTER_ARGUMENT 0x9BC
@@ -352,14 +351,17 @@ static void amd_pmc_get_ip_info(struct amd_pmc_dev *dev)
case AMD_CPU_ID_CB:
dev->num_ips = 12;
dev->s2d_msg_id = 0xBE;
+ dev->smu_msg = 0x538;
break;
case AMD_CPU_ID_PS:
dev->num_ips = 21;
dev->s2d_msg_id = 0x85;
+ dev->smu_msg = 0x538;
break;
case PCI_DEVICE_ID_AMD_1AH_M20H_ROOT:
dev->num_ips = 22;
dev->s2d_msg_id = 0xDE;
+ dev->smu_msg = 0x938;
break;
}
}
@@ -663,7 +665,7 @@ static void amd_pmc_dump_registers(struct amd_pmc_dev *dev)
argument = AMD_S2D_REGISTER_ARGUMENT;
response = AMD_S2D_REGISTER_RESPONSE;
} else {
- message = AMD_PMC_REGISTER_MESSAGE;
+ message = dev->smu_msg;
argument = AMD_PMC_REGISTER_ARGUMENT;
response = AMD_PMC_REGISTER_RESPONSE;
}
@@ -690,7 +692,7 @@ static int amd_pmc_send_cmd(struct amd_pmc_dev *dev, u32 arg, u32 *data, u8 msg,
argument = AMD_S2D_REGISTER_ARGUMENT;
response = AMD_S2D_REGISTER_RESPONSE;
} else {
- message = AMD_PMC_REGISTER_MESSAGE;
+ message = dev->smu_msg;
argument = AMD_PMC_REGISTER_ARGUMENT;
response = AMD_PMC_REGISTER_RESPONSE;
}
diff --git a/drivers/platform/x86/amd/pmc/pmc.h b/drivers/platform/x86/amd/pmc/pmc.h
index b4794f118739..827eef65e133 100644
--- a/drivers/platform/x86/amd/pmc/pmc.h
+++ b/drivers/platform/x86/amd/pmc/pmc.h
@@ -26,6 +26,7 @@ struct amd_pmc_dev {
u32 dram_size;
u32 num_ips;
u32 s2d_msg_id;
+ u32 smu_msg;
/* SMU version information */
u8 smu_program;
u8 major;