1*4882a593Smuzhiyun // SPDX-License-Identifier: GPL-2.0
2*4882a593Smuzhiyun
3*4882a593Smuzhiyun /*
4*4882a593Smuzhiyun * Copyright 2016-2018 HabanaLabs, Ltd.
5*4882a593Smuzhiyun * All Rights Reserved.
6*4882a593Smuzhiyun */
7*4882a593Smuzhiyun
8*4882a593Smuzhiyun #include "gaudiP.h"
9*4882a593Smuzhiyun #include "../include/gaudi/gaudi_fw_if.h"
10*4882a593Smuzhiyun
gaudi_set_pll_profile(struct hl_device * hdev,enum hl_pll_frequency freq)11*4882a593Smuzhiyun void gaudi_set_pll_profile(struct hl_device *hdev, enum hl_pll_frequency freq)
12*4882a593Smuzhiyun {
13*4882a593Smuzhiyun struct gaudi_device *gaudi = hdev->asic_specific;
14*4882a593Smuzhiyun
15*4882a593Smuzhiyun if (freq == PLL_LAST)
16*4882a593Smuzhiyun hl_set_frequency(hdev, MME_PLL, gaudi->max_freq_value);
17*4882a593Smuzhiyun }
18*4882a593Smuzhiyun
gaudi_get_clk_rate(struct hl_device * hdev,u32 * cur_clk,u32 * max_clk)19*4882a593Smuzhiyun int gaudi_get_clk_rate(struct hl_device *hdev, u32 *cur_clk, u32 *max_clk)
20*4882a593Smuzhiyun {
21*4882a593Smuzhiyun long value;
22*4882a593Smuzhiyun
23*4882a593Smuzhiyun if (hl_device_disabled_or_in_reset(hdev))
24*4882a593Smuzhiyun return -ENODEV;
25*4882a593Smuzhiyun
26*4882a593Smuzhiyun value = hl_get_frequency(hdev, MME_PLL, false);
27*4882a593Smuzhiyun
28*4882a593Smuzhiyun if (value < 0) {
29*4882a593Smuzhiyun dev_err(hdev->dev, "Failed to retrieve device max clock %ld\n",
30*4882a593Smuzhiyun value);
31*4882a593Smuzhiyun return value;
32*4882a593Smuzhiyun }
33*4882a593Smuzhiyun
34*4882a593Smuzhiyun *max_clk = (value / 1000 / 1000);
35*4882a593Smuzhiyun
36*4882a593Smuzhiyun value = hl_get_frequency(hdev, MME_PLL, true);
37*4882a593Smuzhiyun
38*4882a593Smuzhiyun if (value < 0) {
39*4882a593Smuzhiyun dev_err(hdev->dev,
40*4882a593Smuzhiyun "Failed to retrieve device current clock %ld\n",
41*4882a593Smuzhiyun value);
42*4882a593Smuzhiyun return value;
43*4882a593Smuzhiyun }
44*4882a593Smuzhiyun
45*4882a593Smuzhiyun *cur_clk = (value / 1000 / 1000);
46*4882a593Smuzhiyun
47*4882a593Smuzhiyun return 0;
48*4882a593Smuzhiyun }
49*4882a593Smuzhiyun
clk_max_freq_mhz_show(struct device * dev,struct device_attribute * attr,char * buf)50*4882a593Smuzhiyun static ssize_t clk_max_freq_mhz_show(struct device *dev,
51*4882a593Smuzhiyun struct device_attribute *attr, char *buf)
52*4882a593Smuzhiyun {
53*4882a593Smuzhiyun struct hl_device *hdev = dev_get_drvdata(dev);
54*4882a593Smuzhiyun struct gaudi_device *gaudi = hdev->asic_specific;
55*4882a593Smuzhiyun long value;
56*4882a593Smuzhiyun
57*4882a593Smuzhiyun if (hl_device_disabled_or_in_reset(hdev))
58*4882a593Smuzhiyun return -ENODEV;
59*4882a593Smuzhiyun
60*4882a593Smuzhiyun value = hl_get_frequency(hdev, MME_PLL, false);
61*4882a593Smuzhiyun
62*4882a593Smuzhiyun gaudi->max_freq_value = value;
63*4882a593Smuzhiyun
64*4882a593Smuzhiyun return sprintf(buf, "%lu\n", (value / 1000 / 1000));
65*4882a593Smuzhiyun }
66*4882a593Smuzhiyun
clk_max_freq_mhz_store(struct device * dev,struct device_attribute * attr,const char * buf,size_t count)67*4882a593Smuzhiyun static ssize_t clk_max_freq_mhz_store(struct device *dev,
68*4882a593Smuzhiyun struct device_attribute *attr, const char *buf, size_t count)
69*4882a593Smuzhiyun {
70*4882a593Smuzhiyun struct hl_device *hdev = dev_get_drvdata(dev);
71*4882a593Smuzhiyun struct gaudi_device *gaudi = hdev->asic_specific;
72*4882a593Smuzhiyun int rc;
73*4882a593Smuzhiyun u64 value;
74*4882a593Smuzhiyun
75*4882a593Smuzhiyun if (hl_device_disabled_or_in_reset(hdev)) {
76*4882a593Smuzhiyun count = -ENODEV;
77*4882a593Smuzhiyun goto fail;
78*4882a593Smuzhiyun }
79*4882a593Smuzhiyun
80*4882a593Smuzhiyun rc = kstrtoull(buf, 0, &value);
81*4882a593Smuzhiyun if (rc) {
82*4882a593Smuzhiyun count = -EINVAL;
83*4882a593Smuzhiyun goto fail;
84*4882a593Smuzhiyun }
85*4882a593Smuzhiyun
86*4882a593Smuzhiyun gaudi->max_freq_value = value * 1000 * 1000;
87*4882a593Smuzhiyun
88*4882a593Smuzhiyun hl_set_frequency(hdev, MME_PLL, gaudi->max_freq_value);
89*4882a593Smuzhiyun
90*4882a593Smuzhiyun fail:
91*4882a593Smuzhiyun return count;
92*4882a593Smuzhiyun }
93*4882a593Smuzhiyun
clk_cur_freq_mhz_show(struct device * dev,struct device_attribute * attr,char * buf)94*4882a593Smuzhiyun static ssize_t clk_cur_freq_mhz_show(struct device *dev,
95*4882a593Smuzhiyun struct device_attribute *attr, char *buf)
96*4882a593Smuzhiyun {
97*4882a593Smuzhiyun struct hl_device *hdev = dev_get_drvdata(dev);
98*4882a593Smuzhiyun long value;
99*4882a593Smuzhiyun
100*4882a593Smuzhiyun if (hl_device_disabled_or_in_reset(hdev))
101*4882a593Smuzhiyun return -ENODEV;
102*4882a593Smuzhiyun
103*4882a593Smuzhiyun value = hl_get_frequency(hdev, MME_PLL, true);
104*4882a593Smuzhiyun
105*4882a593Smuzhiyun return sprintf(buf, "%lu\n", (value / 1000 / 1000));
106*4882a593Smuzhiyun }
107*4882a593Smuzhiyun
108*4882a593Smuzhiyun static DEVICE_ATTR_RW(clk_max_freq_mhz);
109*4882a593Smuzhiyun static DEVICE_ATTR_RO(clk_cur_freq_mhz);
110*4882a593Smuzhiyun
111*4882a593Smuzhiyun static struct attribute *gaudi_dev_attrs[] = {
112*4882a593Smuzhiyun &dev_attr_clk_max_freq_mhz.attr,
113*4882a593Smuzhiyun &dev_attr_clk_cur_freq_mhz.attr,
114*4882a593Smuzhiyun NULL,
115*4882a593Smuzhiyun };
116*4882a593Smuzhiyun
gaudi_add_device_attr(struct hl_device * hdev,struct attribute_group * dev_attr_grp)117*4882a593Smuzhiyun void gaudi_add_device_attr(struct hl_device *hdev,
118*4882a593Smuzhiyun struct attribute_group *dev_attr_grp)
119*4882a593Smuzhiyun {
120*4882a593Smuzhiyun dev_attr_grp->attrs = gaudi_dev_attrs;
121*4882a593Smuzhiyun }
122