diff options
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/mailbox/mtk-cmdq-mailbox.c | 22 |
1 files changed, 22 insertions, 0 deletions
diff --git a/drivers/mailbox/mtk-cmdq-mailbox.c b/drivers/mailbox/mtk-cmdq-mailbox.c index d2363c6b8b7a..53904511598d 100644 --- a/drivers/mailbox/mtk-cmdq-mailbox.c +++ b/drivers/mailbox/mtk-cmdq-mailbox.c @@ -94,6 +94,18 @@ struct gce_plat { u32 gce_num; }; +static void cmdq_sw_ddr_enable(struct cmdq *cmdq, bool enable) +{ + WARN_ON(clk_bulk_enable(cmdq->gce_num, cmdq->clocks)); + + if (enable) + writel(GCE_DDR_EN | GCE_CTRL_BY_SW, cmdq->base + GCE_GCTL_VALUE); + else + writel(GCE_CTRL_BY_SW, cmdq->base + GCE_GCTL_VALUE); + + clk_bulk_disable(cmdq->gce_num, cmdq->clocks); +} + u8 cmdq_get_shift_pa(struct mbox_chan *chan) { struct cmdq *cmdq = container_of(chan->mbox, struct cmdq, mbox); @@ -322,6 +334,9 @@ static int cmdq_suspend(struct device *dev) if (task_running) dev_warn(dev, "exist running task(s) in suspend\n"); + if (cmdq->sw_ddr_en) + cmdq_sw_ddr_enable(cmdq, false); + clk_bulk_unprepare(cmdq->gce_num, cmdq->clocks); return 0; @@ -333,6 +348,10 @@ static int cmdq_resume(struct device *dev) WARN_ON(clk_bulk_prepare(cmdq->gce_num, cmdq->clocks)); cmdq->suspended = false; + + if (cmdq->sw_ddr_en) + cmdq_sw_ddr_enable(cmdq, true); + return 0; } @@ -340,6 +359,9 @@ static int cmdq_remove(struct platform_device *pdev) { struct cmdq *cmdq = platform_get_drvdata(pdev); + if (cmdq->sw_ddr_en) + cmdq_sw_ddr_enable(cmdq, false); + clk_bulk_unprepare(cmdq->gce_num, cmdq->clocks); return 0; } |