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mailbox: mailbox: add chip performance info read from efuse [2/2]

Browse Source 
PD#SWPL-4035

Problem:
cpu driver need read efuse data

Solution:
add interface to read data

Verify:
g12a_skt

Change-Id: Ia5d74c3fa057d06426b4277652e508714400a30f
Signed-off-by: Shunzhou Jiang <shunzhou.jiang@amlogic.com>
This commit is contained in:
Shunzhou Jiang
2019-01-09 17:42:52 +08:00
committed by Luan Yuan
parent bca2a386ba
commit eaca75040b
2 changed files with 98 additions and 1 deletions
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88
drivers/amlogic/mailbox/scpi_protocol.c
View File

@@ -60,6 +60,42 @@ enum scpi_error_codes {
SCPI_ERR_MAX
};
static int scpi_freq_map_table[] = {
0,
0,
1200,
1300,
1400,
1500,
1600,
1700,
1800,
1900,
2000,
2100,
2200,
2300,
2400,
0
};
static int scpi_volt_map_table[] = {
0,
0,
900,
910,
920,
930,
940,
950,
960,
970,
980,
990,
1000,
1010,
1020,
0
};
struct scpi_data_buf {
int client_id;
@@ -559,3 +595,55 @@ u8 scpi_get_ethernet_calc(void)
return buf.eth_calc;
}
EXPORT_SYMBOL_GPL(scpi_get_ethernet_calc);
int scpi_get_cpuinfo(enum scpi_get_pfm_type type, u32 *freq, u32 *vol)
{
struct scpi_data_buf sdata;
struct mhu_data_buf mdata;
u8 index = 0;
int ret;
struct __packed {
u32 status;
u8 pfm_info[4];
} buf;
SCPI_SETUP_DBUF(sdata, mdata, SCPI_CL_NONE,
SCPI_CMD_GET_CPUINFO, index, buf);
if (scpi_execute_cmd(&sdata))
return -EPERM;
switch (type) {
case SCPI_CPUINFO_VERSION:
ret = buf.pfm_info[0];
break;
case SCPI_CPUINFO_CLUSTER0:
index = (buf.pfm_info[1] >> 4) & 0xf;
*freq = scpi_freq_map_table[index];
index = buf.pfm_info[1] & 0xf;
*vol = scpi_volt_map_table[index];
ret = 0;
break;
case SCPI_CPUINFO_CLUSTER1:
index = (buf.pfm_info[2] >> 4) & 0xf;
*freq = scpi_freq_map_table[index];
index = buf.pfm_info[2] & 0xf;
*vol = scpi_volt_map_table[index];
ret = 0;
break;
case SCPI_CPUINFO_SLT:
index = (buf.pfm_info[3] >> 4) & 0xf;
*freq = scpi_freq_map_table[index];
index = buf.pfm_info[3] & 0xf;
*vol = scpi_volt_map_table[index];
ret = 0;
break;
default:
*freq = 0;
*vol = 0;
ret = -1;
break;
};
return ret;
}
EXPORT_SYMBOL_GPL(scpi_get_cpuinfo);

11
include/linux/amlogic/scpi_protocol.h
View File

@@ -68,12 +68,21 @@ enum scpi_std_cmd {
SCPI_CMD_WAKEUP_REASON_GET = 0x30,
SCPI_CMD_WAKEUP_REASON_CLR = 0X31,
SCPI_CMD_GET_ETHERNET_CALC = 0x32,
SCPI_CMD_GET_CPUINFO = 0x33,
SCPI_CMD_GET_CEC1 = 0xB4,
SCPI_CMD_GET_CEC2 = 0xB5,
SCPI_CMD_COUNT
};
enum scpi_get_pfm_type {
SCPI_CPUINFO_CLUSTER0,
SCPI_CPUINFO_CLUSTER1,
SCPI_CPUINFO_VERSION,
SCPI_CPUINFO_SLT,
SCPI_CPUINFO_NUMS
};
struct scpi_opp_entry {
u32 freq_hz;
u32 volt_mv;
@@ -85,7 +94,6 @@ struct scpi_dvfs_info {
struct scpi_opp_entry *opp;
} __packed;
unsigned long scpi_clk_get_val(u16 clk_id);
int scpi_clk_set_val(u16 clk_id, unsigned long rate);
int scpi_dvfs_get_idx(u8 domain);
@@ -101,4 +109,5 @@ int scpi_get_wakeup_reason(u32 *wakeup_reason);
int scpi_clr_wakeup_reason(void);
int scpi_get_cec_val(enum scpi_std_cmd index, u32 *p_cec);
u8 scpi_get_ethernet_calc(void);
int scpi_get_cpuinfo(enum scpi_get_pfm_type type, u32 *freq, u32 *vol);
#endif /*_SCPI_PROTOCOL_H_*/