drivers/cpufreq/bmips-cpufreq.c

2  * CPU frequency scaling for Broadcom BMIPS SoCs
25 #define BMIPS_CPUFREQ_NAME	BMIPS_CPUFREQ_PREFIX "-cpufreq"
72 	cpu_freq = htp_freq_to_cpu_freq(priv->clk_mult);  in bmips_cpufreq_get_freq_table()
74 	table = kmalloc_array(priv->max_freqs + 1, sizeof(*table), GFP_KERNEL);  in bmips_cpufreq_get_freq_table()
76 		return ERR_PTR(-ENOMEM);  in bmips_cpufreq_get_freq_table()
78 	for (i = 0; i < priv->max_freqs; i++) {  in bmips_cpufreq_get_freq_table()
79 		table[i].frequency = cpu_freq / (1 << i);  in bmips_cpufreq_get_freq_table()
82 	table[i].frequency = CPUFREQ_TABLE_END;  in bmips_cpufreq_get_freq_table()
90 	uint32_t mode;  in bmips_cpufreq_get()  local
92 	switch (priv->bmips_type) {  in bmips_cpufreq_get()
95 		mode = read_c0_brcm_mode();  in bmips_cpufreq_get()
96 		div = ((mode >> BMIPS5_CLK_DIV_SHIFT) & BMIPS5_CLK_DIV_MASK);  in bmips_cpufreq_get()
102 	return htp_freq_to_cpu_freq(priv->clk_mult) / (1 << div);  in bmips_cpufreq_get()
108 	unsigned int div = policy->freq_table[index].driver_data;  in bmips_cpufreq_target_index()
110 	switch (priv->bmips_type) {  in bmips_cpufreq_target_index()
118 		return -ENOTSUPP;  in bmips_cpufreq_target_index()
126 	kfree(policy->freq_table);  in bmips_cpufreq_exit()
137 		pr_err("%s: couldn't determine frequency table (%ld).\n",  in bmips_cpufreq_init()
164 	for (cc = bmips_cpufreq_compat; cc->compatible; cc++) {  in bmips_cpufreq_driver_init()
165 		np = of_find_compatible_node(NULL, "cpu", cc->compatible);  in bmips_cpufreq_driver_init()
174 	if (!cc->compatible)  in bmips_cpufreq_driver_init()
175 		return -ENODEV;  in bmips_cpufreq_driver_init()