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SubjectRe: [PATCH 03/10] soc: mediatek: move the CMDQ_IRQ_MASK into cmdq driver data
Date
On 01/29/2019 03:32 PM, Bibby Hsieh wrote:
> The interrupt mask and thread number has positive correlation,
> so we move the CMDQ_IRQ_MASK into cmdq driver data and calculate
> it by thread number.
>
> Signed-off-by: Bibby Hsieh <bibby.hsieh@mediatek.com>
> ---
> drivers/mailbox/mtk-cmdq-mailbox.c | 12 ++++++++----
> 1 file changed, 8 insertions(+), 4 deletions(-)
>
> diff --git a/drivers/mailbox/mtk-cmdq-mailbox.c
b/drivers/mailbox/mtk-cmdq-mailbox.c
> index 909eb23..f6174ca 100644
> --- a/drivers/mailbox/mtk-cmdq-mailbox.c
> +++ b/drivers/mailbox/mtk-cmdq-mailbox.c
> @@ -17,7 +17,6 @@
> #include <linux/of_device.h>
>
> #define CMDQ_OP_CODE_MASK (0xff << CMDQ_OP_CODE_SHIFT)
> -#define CMDQ_IRQ_MASK 0xffff
> #define CMDQ_NUM_CMD(t) (t->cmd_buf_size / CMDQ_INST_SIZE)
>
> #define CMDQ_CURR_IRQ_STATUS 0x10
> @@ -71,6 +70,7 @@ struct cmdq {
> void __iomem *base;
> u32 irq;
> u32 thread_nr;
> + u32 irq_mask;
> struct cmdq_thread *thread;
> struct clk *clock;
> bool suspended;
> @@ -284,11 +284,11 @@ static irqreturn_t cmdq_irq_handler(int irq,
void *dev)
> unsigned long irq_status, flags = 0L;
> int bit;
>
> - irq_status = readl(cmdq->base + CMDQ_CURR_IRQ_STATUS) & CMDQ_IRQ_MASK;
> - if (!(irq_status ^ CMDQ_IRQ_MASK))
> + irq_status = readl(cmdq->base + CMDQ_CURR_IRQ_STATUS) & cmdq->irq_mask;
> + if (!(irq_status ^ cmdq->irq_mask))
> return IRQ_NONE;
>
> - for_each_clear_bit(bit, &irq_status, fls(CMDQ_IRQ_MASK)) {
> + for_each_clear_bit(bit, &irq_status, fls(cmdq->irq_mask)) {
> struct cmdq_thread *thread = &cmdq->thread[bit];
>
> spin_lock_irqsave(&thread->chan->lock, flags);
> @@ -472,6 +472,9 @@ static int cmdq_probe(struct platform_device *pdev)
> dev_err(dev, "failed to get irq\n");
> return -EINVAL;
> }
> +
> + cmdq->thread_nr = (u32)(unsigned long)of_device_get_match_data(dev);
> + cmdq->irq_mask = GENMASK(cmdq->thread_nr - 1, 0);
> err = devm_request_irq(dev, cmdq->irq, cmdq_irq_handler, IRQF_SHARED,
> "mtk_cmdq", cmdq);
> if (err < 0) {
> @@ -489,6 +492,7 @@ static int cmdq_probe(struct platform_device *pdev)
> }
>
> cmdq->thread_nr = (u32)(unsigned long)of_device_get_match_data(dev);
> + cmdq->irq_mask = GENMASK(cmdq->thread_nr - 1, 0);

The cmdq->thread_nr and cmdq->irq_mask are already set above, so these
two lines can be removed.

> cmdq->mbox.dev = dev;
> cmdq->mbox.chans = devm_kcalloc(dev, cmdq->thread_nr,
> sizeof(*cmdq->mbox.chans), GFP_KERNEL);
>

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