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asoc: wcd937x: clear interrupts using regmap irq framework

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Add proper way to clear interrupts using regmap irq framework,
to avoid mismatch between interrupts handled and interrupts
cleared. wcd937x requires writing '1' and then '0' to clear
interrupt. Set a new regmap irq flag 'clear_ack' to indicate this.

Change-Id: I1346dc66735d3b5788e1cc0cfef772c9deacbfc1
Signed-off-by: Ramprasad Katkam <katkam@codeaurora.org>
This commit is contained in:
Ramprasad Katkam 2018-09-20 17:57:03 +05:30
commit 55ec68ca3c
1 changed files with 10 additions and 28 deletions
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36
asoc/codecs/wcd937x/wcd937x.c
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@ -81,6 +81,9 @@ static struct regmap_irq_chip wcd937x_regmap_irq_chip = {
.num_regs = 3,
.status_base = WCD937X_DIGITAL_INTR_STATUS_0,
.mask_base = WCD937X_DIGITAL_INTR_MASK_0,
.ack_base = WCD937X_DIGITAL_INTR_CLEAR_0,
.use_ack = 1,
.clear_ack = 1,
.type_base = WCD937X_DIGITAL_INTR_LEVEL_0,
.runtime_pm = false,
.handle_post_irq = wcd937x_handle_post_irq,
@ -89,35 +92,14 @@ static struct regmap_irq_chip wcd937x_regmap_irq_chip = {
static int wcd937x_handle_post_irq(void *data)
{
struct wcd937x_priv *wcd937x = data;
int val = 0;
struct wcd937x_pdata *pdata = NULL;
u32 status1 = 0, status2 = 0, status3 = 0;
pdata = dev_get_platdata(wcd937x->dev);
regmap_read(wcd937x->regmap, WCD937X_DIGITAL_INTR_STATUS_0, &status1);
regmap_read(wcd937x->regmap, WCD937X_DIGITAL_INTR_STATUS_1, &status2);
regmap_read(wcd937x->regmap, WCD937X_DIGITAL_INTR_STATUS_2, &status3);
regmap_read(wcd937x->regmap, WCD937X_DIGITAL_INTR_STATUS_0, &val);
dev_dbg(wcd937x->dev, "%s Clear OCP interupts\n", __func__);
regmap_write(wcd937x->regmap,
WCD937X_DIGITAL_INTR_CLEAR_0, 0xFF);
regmap_write(wcd937x->regmap,
WCD937X_DIGITAL_INTR_CLEAR_0, 0x0);
regmap_read(wcd937x->regmap, WCD937X_DIGITAL_INTR_STATUS_1, &val);
dev_dbg(wcd937x->dev, "%s Clear SCD interupts\n", __func__);
regmap_write(wcd937x->regmap,
WCD937X_DIGITAL_INTR_CLEAR_1, 0xFF);
regmap_write(wcd937x->regmap,
WCD937X_DIGITAL_INTR_CLEAR_1, 0x0);
regmap_write(wcd937x->regmap,
WCD937X_DIGITAL_INTR_CLEAR_2, 0xFF);
regmap_write(wcd937x->regmap,
WCD937X_DIGITAL_INTR_CLEAR_2, 0x0);
regmap_read(wcd937x->regmap, WCD937X_DIGITAL_INTR_STATUS_0, &val);
regmap_read(wcd937x->regmap, WCD937X_DIGITAL_INTR_STATUS_1, &val);
regmap_read(wcd937x->regmap, WCD937X_DIGITAL_INTR_STATUS_2, &val);
regmap_read(wcd937x->regmap, WCD937X_DIGITAL_INTR_CLEAR_0, &val);
regmap_read(wcd937x->regmap, WCD937X_DIGITAL_INTR_CLEAR_1, &val);
regmap_read(wcd937x->regmap, WCD937X_DIGITAL_INTR_CLEAR_2, &val);
wcd937x->tx_swr_dev->slave_irq_pending =
((status1 || status2 || status3) ? true : false);
return IRQ_HANDLED;
}