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cpufreq: qcom-hw: Use of_device_get_match_data for offsets and row size
For preparing the driver to handle further SoC revisions, let's use the of_device_get_match_data() API for getting the device specific offsets and row size instead of defining them globally. Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org> Reviewed-by: Bjorn Andersson <bjorn.andersson@linaro.org> Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
This commit is contained in:
Manivannan Sadhasivam
Viresh Kumar
parent
f17b3e4432
commit
dcd1fd724c
@ -19,15 +19,21 @@
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#define LUT_L_VAL GENMASK(7, 0)
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#define LUT_CORE_COUNT GENMASK(18, 16)
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#define LUT_VOLT GENMASK(11, 0)
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#define LUT_ROW_SIZE 32
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#define CLK_HW_DIV 2
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#define LUT_TURBO_IND 1
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/* Register offsets */
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#define REG_ENABLE 0x0
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#define REG_FREQ_LUT 0x110
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#define REG_VOLT_LUT 0x114
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#define REG_PERF_STATE 0x920
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struct qcom_cpufreq_soc_data {
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u32 reg_enable;
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u32 reg_freq_lut;
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u32 reg_volt_lut;
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u32 reg_perf_state;
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u8 lut_row_size;
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};
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struct qcom_cpufreq_data {
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void __iomem *base;
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const struct qcom_cpufreq_soc_data *soc_data;
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};
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static unsigned long cpu_hw_rate, xo_rate;
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static bool icc_scaling_enabled;
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@ -76,10 +82,11 @@ static int qcom_cpufreq_update_opp(struct device *cpu_dev,
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static int qcom_cpufreq_hw_target_index(struct cpufreq_policy *policy,
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unsigned int index)
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{
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void __iomem *perf_state_reg = policy->driver_data;
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struct qcom_cpufreq_data *data = policy->driver_data;
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const struct qcom_cpufreq_soc_data *soc_data = data->soc_data;
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unsigned long freq = policy->freq_table[index].frequency;
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writel_relaxed(index, perf_state_reg);
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writel_relaxed(index, data->base + soc_data->reg_perf_state);
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if (icc_scaling_enabled)
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qcom_cpufreq_set_bw(policy, freq);
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@ -91,7 +98,8 @@ static int qcom_cpufreq_hw_target_index(struct cpufreq_policy *policy,
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static unsigned int qcom_cpufreq_hw_get(unsigned int cpu)
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{
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void __iomem *perf_state_reg;
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struct qcom_cpufreq_data *data;
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const struct qcom_cpufreq_soc_data *soc_data;
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struct cpufreq_policy *policy;
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unsigned int index;
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@ -99,9 +107,10 @@ static unsigned int qcom_cpufreq_hw_get(unsigned int cpu)
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if (!policy)
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return 0;
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perf_state_reg = policy->driver_data;
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data = policy->driver_data;
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soc_data = data->soc_data;
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index = readl_relaxed(perf_state_reg);
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index = readl_relaxed(data->base + soc_data->reg_perf_state);
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index = min(index, LUT_MAX_ENTRIES - 1);
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return policy->freq_table[index].frequency;
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@ -110,12 +119,13 @@ static unsigned int qcom_cpufreq_hw_get(unsigned int cpu)
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static unsigned int qcom_cpufreq_hw_fast_switch(struct cpufreq_policy *policy,
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unsigned int target_freq)
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{
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void __iomem *perf_state_reg = policy->driver_data;
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struct qcom_cpufreq_data *data = policy->driver_data;
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const struct qcom_cpufreq_soc_data *soc_data = data->soc_data;
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unsigned int index;
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unsigned long freq;
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index = policy->cached_resolved_idx;
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writel_relaxed(index, perf_state_reg);
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writel_relaxed(index, data->base + soc_data->reg_perf_state);
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freq = policy->freq_table[index].frequency;
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arch_set_freq_scale(policy->related_cpus, freq,
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@ -125,8 +135,7 @@ static unsigned int qcom_cpufreq_hw_fast_switch(struct cpufreq_policy *policy,
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}
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static int qcom_cpufreq_hw_read_lut(struct device *cpu_dev,
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struct cpufreq_policy *policy,
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void __iomem *base)
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struct cpufreq_policy *policy)
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{
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u32 data, src, lval, i, core_count, prev_freq = 0, freq;
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u32 volt;
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@ -134,6 +143,8 @@ static int qcom_cpufreq_hw_read_lut(struct device *cpu_dev,
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struct dev_pm_opp *opp;
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unsigned long rate;
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int ret;
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struct qcom_cpufreq_data *drv_data = policy->driver_data;
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const struct qcom_cpufreq_soc_data *soc_data = drv_data->soc_data;
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table = kcalloc(LUT_MAX_ENTRIES + 1, sizeof(*table), GFP_KERNEL);
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if (!table)
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@ -160,14 +171,14 @@ static int qcom_cpufreq_hw_read_lut(struct device *cpu_dev,
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}
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for (i = 0; i < LUT_MAX_ENTRIES; i++) {
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data = readl_relaxed(base + REG_FREQ_LUT +
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i * LUT_ROW_SIZE);
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data = readl_relaxed(drv_data->base + soc_data->reg_freq_lut +
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i * soc_data->lut_row_size);
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src = FIELD_GET(LUT_SRC, data);
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lval = FIELD_GET(LUT_L_VAL, data);
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core_count = FIELD_GET(LUT_CORE_COUNT, data);
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data = readl_relaxed(base + REG_VOLT_LUT +
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i * LUT_ROW_SIZE);
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data = readl_relaxed(drv_data->base + soc_data->reg_volt_lut +
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i * soc_data->lut_row_size);
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volt = FIELD_GET(LUT_VOLT, data) * 1000;
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if (src)
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@ -237,6 +248,20 @@ static void qcom_get_related_cpus(int index, struct cpumask *m)
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}
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}
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static const struct qcom_cpufreq_soc_data qcom_soc_data = {
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.reg_enable = 0x0,
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.reg_freq_lut = 0x110,
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.reg_volt_lut = 0x114,
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.reg_perf_state = 0x920,
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.lut_row_size = 32,
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};
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static const struct of_device_id qcom_cpufreq_hw_match[] = {
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{ .compatible = "qcom,cpufreq-hw", .data = &qcom_soc_data },
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{}
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};
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MODULE_DEVICE_TABLE(of, qcom_cpufreq_hw_match);
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static int qcom_cpufreq_hw_cpu_init(struct cpufreq_policy *policy)
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{
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struct platform_device *pdev = cpufreq_get_driver_data();
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@ -245,6 +270,7 @@ static int qcom_cpufreq_hw_cpu_init(struct cpufreq_policy *policy)
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struct device_node *cpu_np;
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struct device *cpu_dev;
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void __iomem *base;
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struct qcom_cpufreq_data *data;
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int ret, index;
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cpu_dev = get_cpu_device(policy->cpu);
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@ -270,8 +296,17 @@ static int qcom_cpufreq_hw_cpu_init(struct cpufreq_policy *policy)
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if (IS_ERR(base))
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return PTR_ERR(base);
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data = devm_kzalloc(dev, sizeof(*data), GFP_KERNEL);
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if (!data) {
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ret = -ENOMEM;
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goto error;
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}
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data->soc_data = of_device_get_match_data(&pdev->dev);
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data->base = base;
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/* HW should be in enabled state to proceed */
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if (!(readl_relaxed(base + REG_ENABLE) & 0x1)) {
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if (!(readl_relaxed(base + data->soc_data->reg_enable) & 0x1)) {
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dev_err(dev, "Domain-%d cpufreq hardware not enabled\n", index);
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ret = -ENODEV;
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goto error;
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@ -284,9 +319,9 @@ static int qcom_cpufreq_hw_cpu_init(struct cpufreq_policy *policy)
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goto error;
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}
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policy->driver_data = base + REG_PERF_STATE;
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policy->driver_data = data;
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ret = qcom_cpufreq_hw_read_lut(cpu_dev, policy, base);
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ret = qcom_cpufreq_hw_read_lut(cpu_dev, policy);
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if (ret) {
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dev_err(dev, "Domain-%d failed to read LUT\n", index);
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goto error;
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@ -310,13 +345,13 @@ error:
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static int qcom_cpufreq_hw_cpu_exit(struct cpufreq_policy *policy)
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{
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struct device *cpu_dev = get_cpu_device(policy->cpu);
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void __iomem *base = policy->driver_data - REG_PERF_STATE;
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struct qcom_cpufreq_data *data = policy->driver_data;
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struct platform_device *pdev = cpufreq_get_driver_data();
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dev_pm_opp_remove_all_dynamic(cpu_dev);
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dev_pm_opp_of_cpumask_remove_table(policy->related_cpus);
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kfree(policy->freq_table);
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devm_iounmap(&pdev->dev, base);
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devm_iounmap(&pdev->dev, data->base);
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return 0;
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}
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@ -386,12 +421,6 @@ static int qcom_cpufreq_hw_driver_remove(struct platform_device *pdev)
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return cpufreq_unregister_driver(&cpufreq_qcom_hw_driver);
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}
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static const struct of_device_id qcom_cpufreq_hw_match[] = {
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{ .compatible = "qcom,cpufreq-hw" },
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{}
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};
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MODULE_DEVICE_TABLE(of, qcom_cpufreq_hw_match);
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static struct platform_driver qcom_cpufreq_hw_driver = {
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.probe = qcom_cpufreq_hw_driver_probe,
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.remove = qcom_cpufreq_hw_driver_remove,
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