diff options
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/devfreq/rk3399_dmc.c | 53 |
1 files changed, 1 insertions, 52 deletions
diff --git a/drivers/devfreq/rk3399_dmc.c b/drivers/devfreq/rk3399_dmc.c index 5dfbfa3cc878..44a379657cd5 100644 --- a/drivers/devfreq/rk3399_dmc.c +++ b/drivers/devfreq/rk3399_dmc.c @@ -68,15 +68,6 @@ struct rk3399_dmcfreq { struct devfreq_event_dev *edev; struct mutex lock; struct dram_timing timing; - - /* - * DDR Converser of Frequency (DCF) is used to implement DDR frequency - * conversion without the participation of CPU, we will implement and - * control it in arm trust firmware. - */ - wait_queue_head_t wait_dcf_queue; - int irq; - int wait_dcf_flag; struct regulator *vdd_center; unsigned long rate, target_rate; unsigned long volt, target_volt; @@ -117,7 +108,6 @@ static int rk3399_dmcfreq_target(struct device *dev, unsigned long *freq, goto out; } } - dmcfreq->wait_dcf_flag = 1; err = clk_set_rate(dmcfreq->dmc_clk, target_rate); if (err) { @@ -129,14 +119,6 @@ static int rk3399_dmcfreq_target(struct device *dev, unsigned long *freq, } /* - * Wait until bcf irq happen, it means freq scaling finish in - * arm trust firmware, use 100ms as timeout time. - */ - if (!wait_event_timeout(dmcfreq->wait_dcf_queue, - !dmcfreq->wait_dcf_flag, HZ / 10)) - dev_warn(dev, "Timeout waiting for dcf interrupt\n"); - - /* * Check the dpll rate, * There only two result we will get, * 1. Ddr frequency scaling fail, we still get the old rate. @@ -241,22 +223,6 @@ static __maybe_unused int rk3399_dmcfreq_resume(struct device *dev) static SIMPLE_DEV_PM_OPS(rk3399_dmcfreq_pm, rk3399_dmcfreq_suspend, rk3399_dmcfreq_resume); -static irqreturn_t rk3399_dmc_irq(int irq, void *dev_id) -{ - struct rk3399_dmcfreq *dmcfreq = dev_id; - struct arm_smccc_res res; - - dmcfreq->wait_dcf_flag = 0; - wake_up(&dmcfreq->wait_dcf_queue); - - /* Clear the DCF interrupt */ - arm_smccc_smc(ROCKCHIP_SIP_DRAM_FREQ, 0, 0, - ROCKCHIP_SIP_CONFIG_DRAM_CLR_IRQ, - 0, 0, 0, 0, &res); - - return IRQ_HANDLED; -} - static int of_get_ddr_timings(struct dram_timing *timing, struct device_node *np) { @@ -330,16 +296,10 @@ static int rk3399_dmcfreq_probe(struct platform_device *pdev) struct device *dev = &pdev->dev; struct device_node *np = pdev->dev.of_node; struct rk3399_dmcfreq *data; - int ret, irq, index, size; + int ret, index, size; uint32_t *timing; struct dev_pm_opp *opp; - irq = platform_get_irq(pdev, 0); - if (irq < 0) { - dev_err(&pdev->dev, - "Cannot get the dmc interrupt resource: %d\n", irq); - return irq; - } data = devm_kzalloc(dev, sizeof(struct rk3399_dmcfreq), GFP_KERNEL); if (!data) return -ENOMEM; @@ -358,17 +318,6 @@ static int rk3399_dmcfreq_probe(struct platform_device *pdev) return PTR_ERR(data->dmc_clk); }; - data->irq = irq; - ret = devm_request_irq(dev, irq, rk3399_dmc_irq, 0, - dev_name(dev), data); - if (ret) { - dev_err(dev, "Failed to request dmc irq: %d\n", ret); - return ret; - } - - init_waitqueue_head(&data->wait_dcf_queue); - data->wait_dcf_flag = 0; - data->edev = devfreq_event_get_edev_by_phandle(dev, 0); if (IS_ERR(data->edev)) return -EPROBE_DEFER; |