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mailbox: imx: support dual interrupts

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i.MX93 S401 MU support two interrupts: tx empty and rx full.

 - Introduce a new flag IMX_MU_V2_IRQ for the dual interrupt case
 - Update Copyright

Signed-off-by: Peng Fan <peng.fan@nxp.com>
Signed-off-by: Jassi Brar <jaswinder.singh@linaro.org>
This commit is contained in:
Peng Fan 2022-03-09 18:03:44 +08:00 committed by Jassi Brar
parent cfd162f604
commit a5cb407a7a
1 changed files with 30 additions and 15 deletions
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45
drivers/mailbox/imx-mailbox.c
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@ -1,6 +1,7 @@
// SPDX-License-Identifier: GPL-2.0
/*
* Copyright (c) 2018 Pengutronix, Oleksij Rempel <o.rempel@pengutronix.de>
* Copyright 2022 NXP, Peng Fan <peng.fan@nxp.com>
*/
#include <linux/clk.h>
@ -28,11 +29,12 @@
#define IMX_MU_SECO_TX_TOUT (msecs_to_jiffies(3000))
#define IMX_MU_SECO_RX_TOUT (msecs_to_jiffies(3000))
/* Please not change TX & RX */
enum imx_mu_chan_type {
IMX_MU_TYPE_TX, /* Tx */
IMX_MU_TYPE_RX, /* Rx */
IMX_MU_TYPE_TXDB, /* Tx doorbell */
IMX_MU_TYPE_RXDB, /* Rx doorbell */
IMX_MU_TYPE_TX = 0, /* Tx */
IMX_MU_TYPE_RX = 1, /* Rx */
IMX_MU_TYPE_TXDB = 2, /* Tx doorbell */
IMX_MU_TYPE_RXDB = 3, /* Rx doorbell */
};
enum imx_mu_xcr {
@ -92,6 +94,7 @@ enum imx_mu_type {
IMX_MU_V1,
IMX_MU_V2 = BIT(1),
IMX_MU_V2_S4 = BIT(15),
IMX_MU_V2_IRQ = BIT(16),
};
struct imx_mu_dcfg {
@ -536,7 +539,7 @@ static int imx_mu_startup(struct mbox_chan *chan)
{
struct imx_mu_priv *priv = to_imx_mu_priv(chan->mbox);
struct imx_mu_con_priv *cp = chan->con_priv;
unsigned long irq_flag = IRQF_SHARED;
unsigned long irq_flag = 0;
int ret;
pm_runtime_get_sync(priv->dev);
@ -551,11 +554,12 @@ static int imx_mu_startup(struct mbox_chan *chan)
if (!priv->dev->pm_domain)
irq_flag |= IRQF_NO_SUSPEND;
ret = request_irq(priv->irq[0], imx_mu_isr, irq_flag,
cp->irq_desc, chan);
if (!(priv->dcfg->type & IMX_MU_V2_IRQ))
irq_flag |= IRQF_SHARED;
ret = request_irq(priv->irq[cp->type], imx_mu_isr, irq_flag, cp->irq_desc, chan);
if (ret) {
dev_err(priv->dev,
"Unable to acquire IRQ %d\n", priv->irq[0]);
dev_err(priv->dev, "Unable to acquire IRQ %d\n", priv->irq[cp->type]);
return ret;
}
@ -598,7 +602,7 @@ static void imx_mu_shutdown(struct mbox_chan *chan)
break;
}
free_irq(priv->irq[0], chan);
free_irq(priv->irq[cp->type], chan);
pm_runtime_put_sync(priv->dev);
}
@ -749,7 +753,7 @@ static int imx_mu_probe(struct platform_device *pdev)
struct device_node *np = dev->of_node;
struct imx_mu_priv *priv;
const struct imx_mu_dcfg *dcfg;
int ret;
int i, ret;
u32 size;
priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL);
@ -762,14 +766,25 @@ static int imx_mu_probe(struct platform_device *pdev)
if (IS_ERR(priv->base))
return PTR_ERR(priv->base);
priv->irq[0] = platform_get_irq(pdev, 0);
if (priv->irq[0] < 0)
return priv->irq[0];
dcfg = of_device_get_match_data(dev);
if (!dcfg)
return -EINVAL;
priv->dcfg = dcfg;
if (priv->dcfg->type & IMX_MU_V2_IRQ) {
priv->irq[IMX_MU_TYPE_TX] = platform_get_irq_byname(pdev, "tx");
if (priv->irq[IMX_MU_TYPE_TX] < 0)
return priv->irq[IMX_MU_TYPE_TX];
priv->irq[IMX_MU_TYPE_RX] = platform_get_irq_byname(pdev, "rx");
if (priv->irq[IMX_MU_TYPE_RX] < 0)
return priv->irq[IMX_MU_TYPE_RX];
} else {
ret = platform_get_irq(pdev, 0);
if (ret < 0)
return ret;
for (i = 0; i < IMX_MU_CHANS; i++)
priv->irq[i] = ret;
}
if (priv->dcfg->type & IMX_MU_V2_S4)
size = sizeof(struct imx_s4_rpc_msg_max);