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mailbox: imx: introduce rxdb callback

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

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 2022-02-07 09:52:10 +08:00 committed by Jassi Brar
parent 960dcc1574
commit 315d2e5624
1 changed files with 17 additions and 3 deletions
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20
drivers/mailbox/imx-mailbox.c
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@ -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},