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Message-Id: <20221102100736.37815-1-angelogioacchino.delregno@collabora.com>
Date: Wed, 2 Nov 2022 11:07:36 +0100
From: AngeloGioacchino Del Regno
<angelogioacchino.delregno@...labora.com>
To: jassisinghbrar@...il.com
Cc: matthias.bgg@...il.com, linux-kernel@...r.kernel.org,
linux-arm-kernel@...ts.infradead.org,
linux-mediatek@...ts.infradead.org,
AngeloGioacchino Del Regno
<angelogioacchino.delregno@...labora.com>
Subject: [PATCH] mailbox: mtk-cmdq-mailbox: Use platform data directly instead of copying
Copying platform data to struct cmdq serves to no purpose, as that
data is never modified during runtime: it's worth at this point
storing a pointer to gce_plat in gce and.
Remove all duplicated `struct gce_plat` members from `struct gce`
and reuse the platform data across the driver to save some memory.
Signed-off-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@...labora.com>
---
This commit applies only on top of series [1]
[1]: https://patchwork.kernel.org/project/linux-mediatek/list/?series=684195
drivers/mailbox/mtk-cmdq-mailbox.c | 88 +++++++++++++-----------------
1 file changed, 39 insertions(+), 49 deletions(-)
diff --git a/drivers/mailbox/mtk-cmdq-mailbox.c b/drivers/mailbox/mtk-cmdq-mailbox.c
index c5229f377c5e..a460ee26eb11 100644
--- a/drivers/mailbox/mtk-cmdq-mailbox.c
+++ b/drivers/mailbox/mtk-cmdq-mailbox.c
@@ -75,15 +75,11 @@ struct cmdq {
struct mbox_controller mbox;
void __iomem *base;
int irq;
- u32 thread_nr;
u32 irq_mask;
+ const struct gce_plat *pdata;
struct cmdq_thread *thread;
struct clk_bulk_data clocks[CMDQ_GCE_NUM_MAX];
bool suspended;
- u8 shift_pa;
- bool control_by_sw;
- bool sw_ddr_en;
- u32 gce_num;
};
struct gce_plat {
@@ -96,21 +92,21 @@ struct gce_plat {
static void cmdq_sw_ddr_enable(struct cmdq *cmdq, bool enable)
{
- WARN_ON(clk_bulk_enable(cmdq->gce_num, cmdq->clocks));
+ WARN_ON(clk_bulk_enable(cmdq->pdata->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);
+ clk_bulk_disable(cmdq->pdata->gce_num, cmdq->clocks);
}
u8 cmdq_get_shift_pa(struct mbox_chan *chan)
{
struct cmdq *cmdq = container_of(chan->mbox, struct cmdq, mbox);
- return cmdq->shift_pa;
+ return cmdq->pdata->shift;
}
EXPORT_SYMBOL(cmdq_get_shift_pa);
@@ -144,10 +140,10 @@ static void cmdq_init(struct cmdq *cmdq)
int i;
u32 gctl_regval = 0;
- WARN_ON(clk_bulk_enable(cmdq->gce_num, cmdq->clocks));
- if (cmdq->control_by_sw)
+ WARN_ON(clk_bulk_enable(cmdq->pdata->gce_num, cmdq->clocks));
+ if (cmdq->pdata->control_by_sw)
gctl_regval = GCE_CTRL_BY_SW;
- if (cmdq->sw_ddr_en)
+ if (cmdq->pdata->sw_ddr_en)
gctl_regval |= GCE_DDR_EN;
if (gctl_regval)
@@ -156,7 +152,7 @@ static void cmdq_init(struct cmdq *cmdq)
writel(CMDQ_THR_ACTIVE_SLOT_CYCLES, cmdq->base + CMDQ_THR_SLOT_CYCLES);
for (i = 0; i <= CMDQ_MAX_EVENT; i++)
writel(i, cmdq->base + CMDQ_SYNC_TOKEN_UPDATE);
- clk_bulk_disable(cmdq->gce_num, cmdq->clocks);
+ clk_bulk_disable(cmdq->pdata->gce_num, cmdq->clocks);
}
static int cmdq_thread_reset(struct cmdq *cmdq, struct cmdq_thread *thread)
@@ -201,7 +197,7 @@ static void cmdq_task_insert_into_thread(struct cmdq_task *task)
prev_task->pkt->cmd_buf_size, DMA_TO_DEVICE);
prev_task_base[CMDQ_NUM_CMD(prev_task->pkt) - 1] =
(u64)CMDQ_JUMP_BY_PA << 32 |
- (task->pa_base >> task->cmdq->shift_pa);
+ (task->pa_base >> task->cmdq->pdata->shift);
dma_sync_single_for_device(dev, prev_task->pa_base,
prev_task->pkt->cmd_buf_size, DMA_TO_DEVICE);
@@ -235,7 +231,7 @@ static void cmdq_task_handle_error(struct cmdq_task *task)
next_task = list_first_entry_or_null(&thread->task_busy_list,
struct cmdq_task, list_entry);
if (next_task)
- writel(next_task->pa_base >> cmdq->shift_pa,
+ writel(next_task->pa_base >> cmdq->pdata->shift,
thread->base + CMDQ_THR_CURR_ADDR);
cmdq_thread_resume(thread);
}
@@ -266,7 +262,7 @@ static void cmdq_thread_irq_handler(struct cmdq *cmdq,
else
return;
- curr_pa = readl(thread->base + CMDQ_THR_CURR_ADDR) << cmdq->shift_pa;
+ curr_pa = readl(thread->base + CMDQ_THR_CURR_ADDR) << cmdq->pdata->shift;
list_for_each_entry_safe(task, tmp, &thread->task_busy_list,
list_entry) {
@@ -289,7 +285,7 @@ static void cmdq_thread_irq_handler(struct cmdq *cmdq,
if (list_empty(&thread->task_busy_list)) {
cmdq_thread_disable(cmdq, thread);
- clk_bulk_disable(cmdq->gce_num, cmdq->clocks);
+ clk_bulk_disable(cmdq->pdata->gce_num, cmdq->clocks);
}
}
@@ -303,7 +299,7 @@ static irqreturn_t cmdq_irq_handler(int irq, void *dev)
if (!(irq_status ^ cmdq->irq_mask))
return IRQ_NONE;
- for_each_clear_bit(bit, &irq_status, cmdq->thread_nr) {
+ for_each_clear_bit(bit, &irq_status, cmdq->pdata->thread_nr) {
struct cmdq_thread *thread = &cmdq->thread[bit];
spin_lock_irqsave(&thread->chan->lock, flags);
@@ -323,7 +319,7 @@ static int cmdq_suspend(struct device *dev)
cmdq->suspended = true;
- for (i = 0; i < cmdq->thread_nr; i++) {
+ for (i = 0; i < cmdq->pdata->thread_nr; i++) {
thread = &cmdq->thread[i];
if (!list_empty(&thread->task_busy_list)) {
task_running = true;
@@ -334,10 +330,10 @@ 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)
+ if (cmdq->pdata->sw_ddr_en)
cmdq_sw_ddr_enable(cmdq, false);
- clk_bulk_unprepare(cmdq->gce_num, cmdq->clocks);
+ clk_bulk_unprepare(cmdq->pdata->gce_num, cmdq->clocks);
return 0;
}
@@ -346,10 +342,10 @@ static int cmdq_resume(struct device *dev)
{
struct cmdq *cmdq = dev_get_drvdata(dev);
- WARN_ON(clk_bulk_prepare(cmdq->gce_num, cmdq->clocks));
+ WARN_ON(clk_bulk_prepare(cmdq->pdata->gce_num, cmdq->clocks));
cmdq->suspended = false;
- if (cmdq->sw_ddr_en)
+ if (cmdq->pdata->sw_ddr_en)
cmdq_sw_ddr_enable(cmdq, true);
return 0;
@@ -359,10 +355,10 @@ static int cmdq_remove(struct platform_device *pdev)
{
struct cmdq *cmdq = platform_get_drvdata(pdev);
- if (cmdq->sw_ddr_en)
+ if (cmdq->pdata->sw_ddr_en)
cmdq_sw_ddr_enable(cmdq, false);
- clk_bulk_unprepare(cmdq->gce_num, cmdq->clocks);
+ clk_bulk_unprepare(cmdq->pdata->gce_num, cmdq->clocks);
return 0;
}
@@ -388,7 +384,7 @@ static int cmdq_mbox_send_data(struct mbox_chan *chan, void *data)
task->pkt = pkt;
if (list_empty(&thread->task_busy_list)) {
- WARN_ON(clk_bulk_enable(cmdq->gce_num, cmdq->clocks));
+ WARN_ON(clk_bulk_enable(cmdq->pdata->gce_num, cmdq->clocks));
/*
* The thread reset will clear thread related register to 0,
@@ -398,9 +394,9 @@ static int cmdq_mbox_send_data(struct mbox_chan *chan, void *data)
*/
WARN_ON(cmdq_thread_reset(cmdq, thread) < 0);
- writel(task->pa_base >> cmdq->shift_pa,
+ writel(task->pa_base >> cmdq->pdata->shift,
thread->base + CMDQ_THR_CURR_ADDR);
- writel((task->pa_base + pkt->cmd_buf_size) >> cmdq->shift_pa,
+ writel((task->pa_base + pkt->cmd_buf_size) >> cmdq->pdata->shift,
thread->base + CMDQ_THR_END_ADDR);
writel(thread->priority, thread->base + CMDQ_THR_PRIORITY);
@@ -409,20 +405,20 @@ static int cmdq_mbox_send_data(struct mbox_chan *chan, void *data)
} else {
WARN_ON(cmdq_thread_suspend(cmdq, thread) < 0);
curr_pa = readl(thread->base + CMDQ_THR_CURR_ADDR) <<
- cmdq->shift_pa;
+ cmdq->pdata->shift;
end_pa = readl(thread->base + CMDQ_THR_END_ADDR) <<
- cmdq->shift_pa;
+ cmdq->pdata->shift;
/* check boundary */
if (curr_pa == end_pa - CMDQ_INST_SIZE ||
curr_pa == end_pa) {
/* set to this task directly */
- writel(task->pa_base >> cmdq->shift_pa,
+ writel(task->pa_base >> cmdq->pdata->shift,
thread->base + CMDQ_THR_CURR_ADDR);
} else {
cmdq_task_insert_into_thread(task);
smp_mb(); /* modify jump before enable thread */
}
- writel((task->pa_base + pkt->cmd_buf_size) >> cmdq->shift_pa,
+ writel((task->pa_base + pkt->cmd_buf_size) >> cmdq->pdata->shift,
thread->base + CMDQ_THR_END_ADDR);
cmdq_thread_resume(thread);
}
@@ -461,7 +457,7 @@ static void cmdq_mbox_shutdown(struct mbox_chan *chan)
}
cmdq_thread_disable(cmdq, thread);
- clk_bulk_disable(cmdq->gce_num, cmdq->clocks);
+ clk_bulk_disable(cmdq->pdata->gce_num, cmdq->clocks);
done:
/*
@@ -501,7 +497,7 @@ static int cmdq_mbox_flush(struct mbox_chan *chan, unsigned long timeout)
cmdq_thread_resume(thread);
cmdq_thread_disable(cmdq, thread);
- clk_bulk_disable(cmdq->gce_num, cmdq->clocks);
+ clk_bulk_disable(cmdq->pdata->gce_num, cmdq->clocks);
out:
spin_unlock_irqrestore(&thread->chan->lock, flags);
@@ -548,7 +544,6 @@ static int cmdq_probe(struct platform_device *pdev)
struct device *dev = &pdev->dev;
struct cmdq *cmdq;
int err, i;
- struct gce_plat *plat_data;
struct device_node *phandle = dev->of_node;
struct device_node *node;
int alias_id = 0;
@@ -567,18 +562,13 @@ static int cmdq_probe(struct platform_device *pdev)
if (cmdq->irq < 0)
return cmdq->irq;
- plat_data = (struct gce_plat *)of_device_get_match_data(dev);
- if (!plat_data) {
+ cmdq->pdata = device_get_match_data(dev);
+ if (!cmdq->pdata) {
dev_err(dev, "failed to get match data\n");
return -EINVAL;
}
- cmdq->thread_nr = plat_data->thread_nr;
- cmdq->shift_pa = plat_data->shift;
- cmdq->control_by_sw = plat_data->control_by_sw;
- cmdq->sw_ddr_en = plat_data->sw_ddr_en;
- cmdq->gce_num = plat_data->gce_num;
- cmdq->irq_mask = GENMASK(cmdq->thread_nr - 1, 0);
+ cmdq->irq_mask = GENMASK(cmdq->pdata->thread_nr - 1, 0);
err = devm_request_irq(dev, cmdq->irq, cmdq_irq_handler, IRQF_SHARED,
"mtk_cmdq", cmdq);
if (err < 0) {
@@ -589,10 +579,10 @@ static int cmdq_probe(struct platform_device *pdev)
dev_dbg(dev, "cmdq device: addr:0x%p, va:0x%p, irq:%d\n",
dev, cmdq->base, cmdq->irq);
- if (cmdq->gce_num > 1) {
+ if (cmdq->pdata->gce_num > 1) {
for_each_child_of_node(phandle->parent, node) {
alias_id = of_alias_get_id(node, clk_name);
- if (alias_id >= 0 && alias_id < cmdq->gce_num) {
+ if (alias_id >= 0 && alias_id < cmdq->pdata->gce_num) {
cmdq->clocks[alias_id].id = clk_names[alias_id];
cmdq->clocks[alias_id].clk = of_clk_get(node, 0);
if (IS_ERR(cmdq->clocks[alias_id].clk)) {
@@ -614,12 +604,12 @@ static int cmdq_probe(struct platform_device *pdev)
}
cmdq->mbox.dev = dev;
- cmdq->mbox.chans = devm_kcalloc(dev, cmdq->thread_nr,
+ cmdq->mbox.chans = devm_kcalloc(dev, cmdq->pdata->thread_nr,
sizeof(*cmdq->mbox.chans), GFP_KERNEL);
if (!cmdq->mbox.chans)
return -ENOMEM;
- cmdq->mbox.num_chans = cmdq->thread_nr;
+ cmdq->mbox.num_chans = cmdq->pdata->thread_nr;
cmdq->mbox.ops = &cmdq_mbox_chan_ops;
cmdq->mbox.of_xlate = cmdq_xlate;
@@ -627,12 +617,12 @@ static int cmdq_probe(struct platform_device *pdev)
cmdq->mbox.txdone_irq = false;
cmdq->mbox.txdone_poll = false;
- cmdq->thread = devm_kcalloc(dev, cmdq->thread_nr,
+ cmdq->thread = devm_kcalloc(dev, cmdq->pdata->thread_nr,
sizeof(*cmdq->thread), GFP_KERNEL);
if (!cmdq->thread)
return -ENOMEM;
- for (i = 0; i < cmdq->thread_nr; i++) {
+ for (i = 0; i < cmdq->pdata->thread_nr; i++) {
cmdq->thread[i].base = cmdq->base + CMDQ_THR_BASE +
CMDQ_THR_SIZE * i;
INIT_LIST_HEAD(&cmdq->thread[i].task_busy_list);
@@ -647,7 +637,7 @@ static int cmdq_probe(struct platform_device *pdev)
platform_set_drvdata(pdev, cmdq);
- WARN_ON(clk_bulk_prepare(cmdq->gce_num, cmdq->clocks));
+ WARN_ON(clk_bulk_prepare(cmdq->pdata->gce_num, cmdq->clocks));
cmdq_init(cmdq);
--
2.37.2
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