Commit 315d2e56 authored by Peng Fan's avatar Peng Fan Committed by Jassi Brar
Browse files

mailbox: imx: introduce rxdb callback 



Add a rxdb callback to prepare for i.MX8 SECO MU rxdb which has a
different logic.

Signed-off-by: default avatarPeng Fan <peng.fan@nxp.com>
Signed-off-by: default avatarJassi Brar <jaswinder.singh@linaro.org>
parent 960dcc15

drivers/mailbox/imx-mailbox.c

+17 −3
Original line number Diff line number Diff line
@@ -93,6 +93,7 @@ enum imx_mu_type { 
struct imx_mu_dcfg {

	int (*tx)(struct imx_mu_priv *priv, struct imx_mu_con_priv *cp, void *data);

	int (*rx)(struct imx_mu_priv *priv, struct imx_mu_con_priv *cp);

	int (*rxdb)(struct imx_mu_priv *priv, struct imx_mu_con_priv *cp);

	void (*init)(struct imx_mu_priv *priv);

	enum imx_mu_type type;

	u32	xTR;		/* Transmit Register0 */
@@ -179,6 +180,16 @@ static int imx_mu_generic_rx(struct imx_mu_priv *priv, 
	return 0;

}



static int imx_mu_generic_rxdb(struct imx_mu_priv *priv,

			       struct imx_mu_con_priv *cp)

{

	imx_mu_write(priv, IMX_MU_xSR_GIPn(priv->dcfg->type, cp->idx),

		     priv->dcfg->xSR[IMX_MU_GSR]);

	mbox_chan_received_data(cp->chan, NULL);



	return 0;

}



static int imx_mu_specific_tx(struct imx_mu_priv *priv, struct imx_mu_con_priv *cp, void *data)

{

	u32 *arg = data;
@@ -329,9 +340,7 @@ static irqreturn_t imx_mu_isr(int irq, void *p) 
		priv->dcfg->rx(priv, cp);

	} else if ((val == IMX_MU_xSR_GIPn(priv->dcfg->type, cp->idx)) &&

		   (cp->type == IMX_MU_TYPE_RXDB)) {

		imx_mu_write(priv, IMX_MU_xSR_GIPn(priv->dcfg->type, cp->idx),

			     priv->dcfg->xSR[IMX_MU_GSR]);

		mbox_chan_received_data(chan, NULL);

		priv->dcfg->rxdb(priv, cp);

	} else {

		dev_warn_ratelimited(priv->dev, "Not handled interrupt\n");

		return IRQ_NONE;
@@ -639,6 +648,7 @@ static int imx_mu_remove(struct platform_device *pdev) 
static const struct imx_mu_dcfg imx_mu_cfg_imx6sx = {

	.tx	= imx_mu_generic_tx,

	.rx	= imx_mu_generic_rx,

	.rxdb	= imx_mu_generic_rxdb,

	.init	= imx_mu_init_generic,

	.xTR	= 0x0,

	.xRR	= 0x10,
@@ -649,6 +659,7 @@ static const struct imx_mu_dcfg imx_mu_cfg_imx6sx = { 
static const struct imx_mu_dcfg imx_mu_cfg_imx7ulp = {

	.tx	= imx_mu_generic_tx,

	.rx	= imx_mu_generic_rx,

	.rxdb	= imx_mu_generic_rxdb,

	.init	= imx_mu_init_generic,

	.xTR	= 0x20,

	.xRR	= 0x40,
@@ -659,7 +670,9 @@ static const struct imx_mu_dcfg imx_mu_cfg_imx7ulp = { 
static const struct imx_mu_dcfg imx_mu_cfg_imx8ulp = {

	.tx	= imx_mu_generic_tx,

	.rx	= imx_mu_generic_rx,

	.rxdb	= imx_mu_generic_rxdb,

	.init	= imx_mu_init_generic,

	.rxdb	= imx_mu_generic_rxdb,

	.type	= IMX_MU_V2,

	.xTR	= 0x200,

	.xRR	= 0x280,
@@ -682,6 +695,7 @@ static const struct imx_mu_dcfg imx_mu_cfg_imx8_scu = { 
	.tx	= imx_mu_specific_tx,

	.rx	= imx_mu_specific_rx,

	.init	= imx_mu_init_specific,

	.rxdb	= imx_mu_generic_rxdb,

	.xTR	= 0x0,

	.xRR	= 0x10,

	.xSR	= {0x20, 0x20, 0x20, 0x20},