* [PATCH v5 0/4] mailbox: imx: bug fix and add support for imx v1 mu @ 2019-08-05 2:51 Richard Zhu 2019-08-05 2:51 ` [PATCH v5 1/4] mailbox: imx: Fix Tx doorbell shutdown path Richard Zhu ` (3 more replies) 0 siblings, 4 replies; 9+ messages in thread From: Richard Zhu @ 2019-08-05 2:51 UTC (permalink / raw) To: jassisinghbrar, o.rempel, daniel.baluta, aisheng.dong Cc: linux-imx, linux-kernel, linux-arm-kernel, Richard Zhu Change logs: v4 --> v5: - Include Daniel's patch-set into this one. v3 --> v4: - Change "version1.0" to "version 1.0" in the commit log. - Update the devicetree binding document to support the imx7ulp mu. - Rebase the patch refer to the following bug-fixs patch-set issued by Daniel Baluta <daniel.baluta@gmail.com>. "https://patchwork.kernel.org/patch/11069479/" v2 --> v3: - Format the patch-set refer to Oleksij's guidance. - Init the register array by a simple way recommended by Oleksij. - Add Reviewed-by: Oleksij Rempel <o.rempel@pengutronix.de> tag. v1 --> v2: - Use to have the register layout linked on probe, suggested by Oleksij Rempel <o.rempel@pengutronix.de>. - Add Reviewed-by: Dong Aisheng <aisheng.dong@nxp.com> tag. Richard Zhu (4): mailbox: imx: Fix Tx doorbell shutdown path mailbox: imx: Clear the right interrupts at shutdown dt-bindings: mailbox: imx-mu: add imx7ulp MU support mailbox: imx: add support for imx v1 mu .../devicetree/bindings/mailbox/fsl,mu.txt | 2 + drivers/mailbox/imx-mailbox.c | 74 ++++++++++++++++------ 2 files changed, 56 insertions(+), 20 deletions(-) -- 2.7.4 ^ permalink raw reply [flat|nested] 9+ messages in thread
* [PATCH v5 1/4] mailbox: imx: Fix Tx doorbell shutdown path 2019-08-05 2:51 [PATCH v5 0/4] mailbox: imx: bug fix and add support for imx v1 mu Richard Zhu @ 2019-08-05 2:51 ` Richard Zhu 2019-08-05 4:38 ` Aisheng Dong 2019-08-05 2:51 ` [PATCH v5 2/4] mailbox: imx: Clear the right interrupts at shutdown Richard Zhu ` (2 subsequent siblings) 3 siblings, 1 reply; 9+ messages in thread From: Richard Zhu @ 2019-08-05 2:51 UTC (permalink / raw) To: jassisinghbrar, o.rempel, daniel.baluta, aisheng.dong Cc: linux-imx, linux-kernel, linux-arm-kernel, Richard Zhu Tx doorbell is handled by txdb_tasklet and doesn't have an associated IRQ. Anyhow, imx_mu_shutdown ignores this and tries to free an IRQ that wasn't requested for Tx DB resulting in the following warning: [ 1.967644] Trying to free already-free IRQ 26 [ 1.972108] WARNING: CPU: 2 PID: 157 at kernel/irq/manage.c:1708 __free_irq+0xc0/0x358 [ 1.980024] Modules linked in: [ 1.983088] CPU: 2 PID: 157 Comm: kworker/2:1 Tainted: G [ 1.993524] Hardware name: Freescale i.MX8QXP MEK (DT) [ 1.998668] Workqueue: events deferred_probe_work_func [ 2.003812] pstate: 60000085 (nZCv daIf -PAN -UAO) [ 2.008607] pc : __free_irq+0xc0/0x358 [ 2.012364] lr : __free_irq+0xc0/0x358 [ 2.016111] sp : ffff00001179b7e0 [ 2.019422] x29: ffff00001179b7e0 x28: 0000000000000018 [ 2.024736] x27: ffff000011233000 x26: 0000000000000004 [ 2.030053] x25: 000000000000001a x24: ffff80083bec74d4 [ 2.035369] x23: 0000000000000000 x22: ffff80083bec7588 [ 2.040686] x21: ffff80083b1fe8d8 x20: ffff80083bec7400 [ 2.046003] x19: 0000000000000000 x18: ffffffffffffffff [ 2.051320] x17: 0000000000000000 x16: 0000000000000000 [ 2.056637] x15: ffff0000111296c8 x14: ffff00009179b517 [ 2.061953] x13: ffff00001179b525 x12: ffff000011142000 [ 2.067270] x11: ffff000011129f20 x10: ffff0000105da970 [ 2.072587] x9 : 00000000ffffffd0 x8 : 0000000000000194 [ 2.077903] x7 : 612065657266206f x6 : ffff0000111e7b09 [ 2.083220] x5 : 0000000000000003 x4 : 0000000000000000 [ 2.088537] x3 : 0000000000000000 x2 : 00000000ffffffff [ 2.093854] x1 : 28b70f0a2b60a500 x0 : 0000000000000000 [ 2.099173] Call trace: [ 2.101618] __free_irq+0xc0/0x358 [ 2.105021] free_irq+0x38/0x98 [ 2.108170] imx_mu_shutdown+0x90/0xb0 [ 2.111921] mbox_free_channel.part.2+0x24/0xb8 [ 2.116453] mbox_free_channel+0x18/0x28 This bug is present from the beginning of times. Cc: Oleksij Rempel <o.rempel@pengutronix.de> Signed-off-by: Daniel Baluta <daniel.baluta@nxp.com> Signed-off-by: Richard Zhu <hongxing.zhu@nxp.com> --- drivers/mailbox/imx-mailbox.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/drivers/mailbox/imx-mailbox.c b/drivers/mailbox/imx-mailbox.c index 25be8bb..1eeabc5 100644 --- a/drivers/mailbox/imx-mailbox.c +++ b/drivers/mailbox/imx-mailbox.c @@ -214,8 +214,10 @@ static void imx_mu_shutdown(struct mbox_chan *chan) struct imx_mu_priv *priv = to_imx_mu_priv(chan->mbox); struct imx_mu_con_priv *cp = chan->con_priv; - if (cp->type == IMX_MU_TYPE_TXDB) + if (cp->type == IMX_MU_TYPE_TXDB) { tasklet_kill(&cp->txdb_tasklet); + return; + } imx_mu_xcr_rmw(priv, 0, IMX_MU_xCR_TIEn(cp->idx) | IMX_MU_xCR_RIEn(cp->idx)); -- 2.7.4 ^ permalink raw reply related [flat|nested] 9+ messages in thread
* RE: [PATCH v5 1/4] mailbox: imx: Fix Tx doorbell shutdown path 2019-08-05 2:51 ` [PATCH v5 1/4] mailbox: imx: Fix Tx doorbell shutdown path Richard Zhu @ 2019-08-05 4:38 ` Aisheng Dong 2019-08-05 5:10 ` Richard Zhu 0 siblings, 1 reply; 9+ messages in thread From: Aisheng Dong @ 2019-08-05 4:38 UTC (permalink / raw) To: Richard Zhu, jassisinghbrar, o.rempel, Daniel Baluta Cc: dl-linux-imx, linux-kernel, linux-arm-kernel, Richard Zhu > From: Richard Zhu <hongxing.zhu@nxp.com> > Sent: Monday, August 5, 2019 10:51 AM > > Tx doorbell is handled by txdb_tasklet and doesn't have an associated IRQ. > > Anyhow, imx_mu_shutdown ignores this and tries to free an IRQ that wasn't > requested for Tx DB resulting in the following warning: > > [ 1.967644] Trying to free already-free IRQ 26 > [ 1.972108] WARNING: CPU: 2 PID: 157 at kernel/irq/manage.c:1708 > __free_irq+0xc0/0x358 > [ 1.980024] Modules linked in: > [ 1.983088] CPU: 2 PID: 157 Comm: kworker/2:1 Tainted: G > [ 1.993524] Hardware name: Freescale i.MX8QXP MEK (DT) > [ 1.998668] Workqueue: events deferred_probe_work_func > [ 2.003812] pstate: 60000085 (nZCv daIf -PAN -UAO) > [ 2.008607] pc : __free_irq+0xc0/0x358 > [ 2.012364] lr : __free_irq+0xc0/0x358 > [ 2.016111] sp : ffff00001179b7e0 > [ 2.019422] x29: ffff00001179b7e0 x28: 0000000000000018 > [ 2.024736] x27: ffff000011233000 x26: 0000000000000004 > [ 2.030053] x25: 000000000000001a x24: ffff80083bec74d4 > [ 2.035369] x23: 0000000000000000 x22: ffff80083bec7588 > [ 2.040686] x21: ffff80083b1fe8d8 x20: ffff80083bec7400 > [ 2.046003] x19: 0000000000000000 x18: ffffffffffffffff > [ 2.051320] x17: 0000000000000000 x16: 0000000000000000 > [ 2.056637] x15: ffff0000111296c8 x14: ffff00009179b517 > [ 2.061953] x13: ffff00001179b525 x12: ffff000011142000 > [ 2.067270] x11: ffff000011129f20 x10: ffff0000105da970 > [ 2.072587] x9 : 00000000ffffffd0 x8 : 0000000000000194 > [ 2.077903] x7 : 612065657266206f x6 : ffff0000111e7b09 > [ 2.083220] x5 : 0000000000000003 x4 : 0000000000000000 > [ 2.088537] x3 : 0000000000000000 x2 : 00000000ffffffff > [ 2.093854] x1 : 28b70f0a2b60a500 x0 : 0000000000000000 > [ 2.099173] Call trace: > [ 2.101618] __free_irq+0xc0/0x358 > [ 2.105021] free_irq+0x38/0x98 > [ 2.108170] imx_mu_shutdown+0x90/0xb0 > [ 2.111921] mbox_free_channel.part.2+0x24/0xb8 > [ 2.116453] mbox_free_channel+0x18/0x28 > > This bug is present from the beginning of times. > > Cc: Oleksij Rempel <o.rempel@pengutronix.de> > Signed-off-by: Daniel Baluta <daniel.baluta@nxp.com> > Signed-off-by: Richard Zhu <hongxing.zhu@nxp.com> I think you should keep the original author and Fixes tag. Otherwise: Reviewed-by: Dong Aisheng <aisheng.dong@nxp.com> Regards Aisheng ^ permalink raw reply [flat|nested] 9+ messages in thread
* RE: [PATCH v5 1/4] mailbox: imx: Fix Tx doorbell shutdown path 2019-08-05 4:38 ` Aisheng Dong @ 2019-08-05 5:10 ` Richard Zhu 0 siblings, 0 replies; 9+ messages in thread From: Richard Zhu @ 2019-08-05 5:10 UTC (permalink / raw) To: Aisheng Dong, jassisinghbrar, o.rempel, Daniel Baluta Cc: dl-linux-imx, linux-kernel, linux-arm-kernel > -----Original Message----- > From: Aisheng Dong > Sent: 2019年8月5日 12:38 > To: Richard Zhu <hongxing.zhu@nxp.com>; jassisinghbrar@gmail.com; > o.rempel@pengutronix.de; Daniel Baluta <daniel.baluta@nxp.com> > Cc: dl-linux-imx <linux-imx@nxp.com>; linux-kernel@vger.kernel.org; > linux-arm-kernel@lists.infradead.org; Richard Zhu <hongxing.zhu@nxp.com> > Subject: RE: [PATCH v5 1/4] mailbox: imx: Fix Tx doorbell shutdown path > > > From: Richard Zhu <hongxing.zhu@nxp.com> > > Sent: Monday, August 5, 2019 10:51 AM > > > > Tx doorbell is handled by txdb_tasklet and doesn't have an associated IRQ. > > > > Anyhow, imx_mu_shutdown ignores this and tries to free an IRQ that > > wasn't requested for Tx DB resulting in the following warning: > > > > [ 1.967644] Trying to free already-free IRQ 26 > > [ 1.972108] WARNING: CPU: 2 PID: 157 at kernel/irq/manage.c:1708 > > __free_irq+0xc0/0x358 > > [ 1.980024] Modules linked in: > > [ 1.983088] CPU: 2 PID: 157 Comm: kworker/2:1 Tainted: G > > [ 1.993524] Hardware name: Freescale i.MX8QXP MEK (DT) > > [ 1.998668] Workqueue: events deferred_probe_work_func > > [ 2.003812] pstate: 60000085 (nZCv daIf -PAN -UAO) > > [ 2.008607] pc : __free_irq+0xc0/0x358 > > [ 2.012364] lr : __free_irq+0xc0/0x358 > > [ 2.016111] sp : ffff00001179b7e0 > > [ 2.019422] x29: ffff00001179b7e0 x28: 0000000000000018 > > [ 2.024736] x27: ffff000011233000 x26: 0000000000000004 > > [ 2.030053] x25: 000000000000001a x24: ffff80083bec74d4 > > [ 2.035369] x23: 0000000000000000 x22: ffff80083bec7588 > > [ 2.040686] x21: ffff80083b1fe8d8 x20: ffff80083bec7400 > > [ 2.046003] x19: 0000000000000000 x18: ffffffffffffffff > > [ 2.051320] x17: 0000000000000000 x16: 0000000000000000 > > [ 2.056637] x15: ffff0000111296c8 x14: ffff00009179b517 > > [ 2.061953] x13: ffff00001179b525 x12: ffff000011142000 > > [ 2.067270] x11: ffff000011129f20 x10: ffff0000105da970 > > [ 2.072587] x9 : 00000000ffffffd0 x8 : 0000000000000194 > > [ 2.077903] x7 : 612065657266206f x6 : ffff0000111e7b09 > > [ 2.083220] x5 : 0000000000000003 x4 : 0000000000000000 > > [ 2.088537] x3 : 0000000000000000 x2 : 00000000ffffffff > > [ 2.093854] x1 : 28b70f0a2b60a500 x0 : 0000000000000000 > > [ 2.099173] Call trace: > > [ 2.101618] __free_irq+0xc0/0x358 > > [ 2.105021] free_irq+0x38/0x98 > > [ 2.108170] imx_mu_shutdown+0x90/0xb0 > > [ 2.111921] mbox_free_channel.part.2+0x24/0xb8 > > [ 2.116453] mbox_free_channel+0x18/0x28 > > > > This bug is present from the beginning of times. > > > > Cc: Oleksij Rempel <o.rempel@pengutronix.de> > > Signed-off-by: Daniel Baluta <daniel.baluta@nxp.com> > > Signed-off-by: Richard Zhu <hongxing.zhu@nxp.com> > > I think you should keep the original author and Fixes tag. > Otherwise: > Reviewed-by: Dong Aisheng <aisheng.dong@nxp.com> > [Richard Zhu] Sorry about the author changes, because there are confliction when I use "git am" to merge this patch. Would change the author back, and re-send the v5 patch-set. > Regards > Aisheng ^ permalink raw reply [flat|nested] 9+ messages in thread
* [PATCH v5 2/4] mailbox: imx: Clear the right interrupts at shutdown 2019-08-05 2:51 [PATCH v5 0/4] mailbox: imx: bug fix and add support for imx v1 mu Richard Zhu 2019-08-05 2:51 ` [PATCH v5 1/4] mailbox: imx: Fix Tx doorbell shutdown path Richard Zhu @ 2019-08-05 2:51 ` Richard Zhu 2019-08-05 4:43 ` Aisheng Dong 2019-08-05 2:51 ` [PATCH v5 3/4] dt-bindings: mailbox: imx-mu: add imx7ulp MU support Richard Zhu 2019-08-05 2:51 ` [PATCH v5 4/4] mailbox: imx: add support for imx v1 mu Richard Zhu 3 siblings, 1 reply; 9+ messages in thread From: Richard Zhu @ 2019-08-05 2:51 UTC (permalink / raw) To: jassisinghbrar, o.rempel, daniel.baluta, aisheng.dong Cc: linux-imx, linux-kernel, linux-arm-kernel, Richard Zhu Make sure to only clear enabled interrupts keeping count of the connection type. Suggested-by: Oleksij Rempel <o.rempel@pengutronix.de> Signed-off-by: Daniel Baluta <daniel.baluta@nxp.com> Signed-off-by: Richard Zhu <hongxing.zhu@nxp.com> --- drivers/mailbox/imx-mailbox.c | 15 +++++++++++++-- 1 file changed, 13 insertions(+), 2 deletions(-) diff --git a/drivers/mailbox/imx-mailbox.c b/drivers/mailbox/imx-mailbox.c index 1eeabc5..afe625e 100644 --- a/drivers/mailbox/imx-mailbox.c +++ b/drivers/mailbox/imx-mailbox.c @@ -219,8 +219,19 @@ static void imx_mu_shutdown(struct mbox_chan *chan) return; } - imx_mu_xcr_rmw(priv, 0, - IMX_MU_xCR_TIEn(cp->idx) | IMX_MU_xCR_RIEn(cp->idx)); + switch (cp->type) { + case IMX_MU_TYPE_TX: + imx_mu_xcr_rmw(priv, 0, IMX_MU_xCR_TIEn(cp->idx)); + break; + case IMX_MU_TYPE_RX: + imx_mu_xcr_rmw(priv, 0, IMX_MU_xCR_RIEn(cp->idx)); + break; + case IMX_MU_TYPE_RXDB: + imx_mu_xcr_rmw(priv, 0, IMX_MU_xCR_GIEn(cp->idx)); + break; + default: + break; + } free_irq(priv->irq, chan); } -- 2.7.4 ^ permalink raw reply related [flat|nested] 9+ messages in thread
* RE: [PATCH v5 2/4] mailbox: imx: Clear the right interrupts at shutdown 2019-08-05 2:51 ` [PATCH v5 2/4] mailbox: imx: Clear the right interrupts at shutdown Richard Zhu @ 2019-08-05 4:43 ` Aisheng Dong 0 siblings, 0 replies; 9+ messages in thread From: Aisheng Dong @ 2019-08-05 4:43 UTC (permalink / raw) To: Richard Zhu, jassisinghbrar, o.rempel, Daniel Baluta Cc: dl-linux-imx, linux-kernel, linux-arm-kernel, Richard Zhu > From: Richard Zhu <hongxing.zhu@nxp.com> > Sent: Monday, August 5, 2019 10:51 AM > > Make sure to only clear enabled interrupts keeping count of the connection > type. > > Suggested-by: Oleksij Rempel <o.rempel@pengutronix.de> > Signed-off-by: Daniel Baluta <daniel.baluta@nxp.com> > Signed-off-by: Richard Zhu <hongxing.zhu@nxp.com> Keep original author if any. Otherwise: Reviewed-by: Dong Aisheng <aisheng.dong@nxp.com> Regards Aisheng > --- > drivers/mailbox/imx-mailbox.c | 15 +++++++++++++-- > 1 file changed, 13 insertions(+), 2 deletions(-) > > diff --git a/drivers/mailbox/imx-mailbox.c b/drivers/mailbox/imx-mailbox.c > index 1eeabc5..afe625e 100644 > --- a/drivers/mailbox/imx-mailbox.c > +++ b/drivers/mailbox/imx-mailbox.c > @@ -219,8 +219,19 @@ static void imx_mu_shutdown(struct mbox_chan > *chan) > return; > } > > - imx_mu_xcr_rmw(priv, 0, > - IMX_MU_xCR_TIEn(cp->idx) | IMX_MU_xCR_RIEn(cp->idx)); > + switch (cp->type) { > + case IMX_MU_TYPE_TX: > + imx_mu_xcr_rmw(priv, 0, IMX_MU_xCR_TIEn(cp->idx)); > + break; > + case IMX_MU_TYPE_RX: > + imx_mu_xcr_rmw(priv, 0, IMX_MU_xCR_RIEn(cp->idx)); > + break; > + case IMX_MU_TYPE_RXDB: > + imx_mu_xcr_rmw(priv, 0, IMX_MU_xCR_GIEn(cp->idx)); > + break; > + default: > + break; > + } > > free_irq(priv->irq, chan); > } > -- > 2.7.4 ^ permalink raw reply [flat|nested] 9+ messages in thread
* [PATCH v5 3/4] dt-bindings: mailbox: imx-mu: add imx7ulp MU support 2019-08-05 2:51 [PATCH v5 0/4] mailbox: imx: bug fix and add support for imx v1 mu Richard Zhu 2019-08-05 2:51 ` [PATCH v5 1/4] mailbox: imx: Fix Tx doorbell shutdown path Richard Zhu 2019-08-05 2:51 ` [PATCH v5 2/4] mailbox: imx: Clear the right interrupts at shutdown Richard Zhu @ 2019-08-05 2:51 ` Richard Zhu 2019-08-05 4:49 ` Aisheng Dong 2019-08-05 2:51 ` [PATCH v5 4/4] mailbox: imx: add support for imx v1 mu Richard Zhu 3 siblings, 1 reply; 9+ messages in thread From: Richard Zhu @ 2019-08-05 2:51 UTC (permalink / raw) To: jassisinghbrar, o.rempel, daniel.baluta, aisheng.dong Cc: linux-imx, linux-kernel, linux-arm-kernel, Richard Zhu There is a version 1.0 MU on imx7ulp, use "fsl,imx7ulp-mu" compatible to support it. Signed-off-by: Richard Zhu <hongxing.zhu@nxp.com> --- Documentation/devicetree/bindings/mailbox/fsl,mu.txt | 2 ++ 1 file changed, 2 insertions(+) diff --git a/Documentation/devicetree/bindings/mailbox/fsl,mu.txt b/Documentation/devicetree/bindings/mailbox/fsl,mu.txt index f3cf77e..9c43357 100644 --- a/Documentation/devicetree/bindings/mailbox/fsl,mu.txt +++ b/Documentation/devicetree/bindings/mailbox/fsl,mu.txt @@ -21,6 +21,8 @@ Required properties: imx6sx, imx7s, imx8qxp, imx8qm. The "fsl,imx6sx-mu" compatible is seen as generic and should be included together with SoC specific compatible. + There is a version 1.0 MU on imx7ulp, use "fsl,imx7ulp-mu" + compatible to support it. - reg : Should contain the registers location and length - interrupts : Interrupt number. The interrupt specifier format depends on the interrupt controller parent. -- 2.7.4 ^ permalink raw reply related [flat|nested] 9+ messages in thread
* RE: [PATCH v5 3/4] dt-bindings: mailbox: imx-mu: add imx7ulp MU support 2019-08-05 2:51 ` [PATCH v5 3/4] dt-bindings: mailbox: imx-mu: add imx7ulp MU support Richard Zhu @ 2019-08-05 4:49 ` Aisheng Dong 0 siblings, 0 replies; 9+ messages in thread From: Aisheng Dong @ 2019-08-05 4:49 UTC (permalink / raw) To: Richard Zhu, jassisinghbrar, o.rempel, Daniel Baluta Cc: dl-linux-imx, linux-kernel, linux-arm-kernel, Richard Zhu > From: Richard Zhu <hongxing.zhu@nxp.com> > Sent: Monday, August 5, 2019 10:52 AM > > There is a version 1.0 MU on imx7ulp, use "fsl,imx7ulp-mu" compatible to > support it. > > Signed-off-by: Richard Zhu <hongxing.zhu@nxp.com> Reviewed-by: Dong Aisheng <aisheng.dong@nxp.com> Regards Aisheng ^ permalink raw reply [flat|nested] 9+ messages in thread
* [PATCH v5 4/4] mailbox: imx: add support for imx v1 mu 2019-08-05 2:51 [PATCH v5 0/4] mailbox: imx: bug fix and add support for imx v1 mu Richard Zhu ` (2 preceding siblings ...) 2019-08-05 2:51 ` [PATCH v5 3/4] dt-bindings: mailbox: imx-mu: add imx7ulp MU support Richard Zhu @ 2019-08-05 2:51 ` Richard Zhu 3 siblings, 0 replies; 9+ messages in thread From: Richard Zhu @ 2019-08-05 2:51 UTC (permalink / raw) To: jassisinghbrar, o.rempel, daniel.baluta, aisheng.dong Cc: linux-imx, linux-kernel, linux-arm-kernel, Richard Zhu There is a version 1.0 MU on i.MX7ULP platform. One new version ID register is added, and it's offset is 0. TRn registers are defined at the offset 0x20 ~ 0x2C. RRn registers are defined at the offset 0x40 ~ 0x4C. SR/CR registers are defined at 0x60/0x64. Extend this driver to support it. Signed-off-by: Richard Zhu <hongxing.zhu@nxp.com> Suggested-by: Oleksij Rempel <o.rempel@pengutronix.de> Reviewed-by: Dong Aisheng <aisheng.dong@nxp.com> Reviewed-by: Oleksij Rempel <o.rempel@pengutronix.de> --- drivers/mailbox/imx-mailbox.c | 55 ++++++++++++++++++++++++++++++------------- 1 file changed, 38 insertions(+), 17 deletions(-) diff --git a/drivers/mailbox/imx-mailbox.c b/drivers/mailbox/imx-mailbox.c index afe625e..2cdcdc5 100644 --- a/drivers/mailbox/imx-mailbox.c +++ b/drivers/mailbox/imx-mailbox.c @@ -12,19 +12,11 @@ #include <linux/of_device.h> #include <linux/slab.h> -/* Transmit Register */ -#define IMX_MU_xTRn(x) (0x00 + 4 * (x)) -/* Receive Register */ -#define IMX_MU_xRRn(x) (0x10 + 4 * (x)) -/* Status Register */ -#define IMX_MU_xSR 0x20 #define IMX_MU_xSR_GIPn(x) BIT(28 + (3 - (x))) #define IMX_MU_xSR_RFn(x) BIT(24 + (3 - (x))) #define IMX_MU_xSR_TEn(x) BIT(20 + (3 - (x))) #define IMX_MU_xSR_BRDIP BIT(9) -/* Control Register */ -#define IMX_MU_xCR 0x24 /* General Purpose Interrupt Enable */ #define IMX_MU_xCR_GIEn(x) BIT(28 + (3 - (x))) /* Receive Interrupt Enable */ @@ -44,6 +36,13 @@ enum imx_mu_chan_type { IMX_MU_TYPE_RXDB, /* Rx doorbell */ }; +struct imx_mu_dcfg { + u32 xTR[4]; /* Transmit Registers */ + u32 xRR[4]; /* Receive Registers */ + u32 xSR; /* Status Register */ + u32 xCR; /* Control Register */ +}; + struct imx_mu_con_priv { unsigned int idx; char irq_desc[IMX_MU_CHAN_NAME_SIZE]; @@ -61,12 +60,27 @@ struct imx_mu_priv { struct mbox_chan mbox_chans[IMX_MU_CHANS]; struct imx_mu_con_priv con_priv[IMX_MU_CHANS]; + const struct imx_mu_dcfg *dcfg; struct clk *clk; int irq; bool side_b; }; +static const struct imx_mu_dcfg imx_mu_cfg_imx6sx = { + .xTR = {0x0, 0x4, 0x8, 0xc}, + .xRR = {0x10, 0x14, 0x18, 0x1c}, + .xSR = 0x20, + .xCR = 0x24, +}; + +static const struct imx_mu_dcfg imx_mu_cfg_imx7ulp = { + .xTR = {0x20, 0x24, 0x28, 0x2c}, + .xRR = {0x40, 0x44, 0x48, 0x4c}, + .xSR = 0x60, + .xCR = 0x64, +}; + static struct imx_mu_priv *to_imx_mu_priv(struct mbox_controller *mbox) { return container_of(mbox, struct imx_mu_priv, mbox); @@ -88,10 +102,10 @@ static u32 imx_mu_xcr_rmw(struct imx_mu_priv *priv, u32 set, u32 clr) u32 val; spin_lock_irqsave(&priv->xcr_lock, flags); - val = imx_mu_read(priv, IMX_MU_xCR); + val = imx_mu_read(priv, priv->dcfg->xCR); val &= ~clr; val |= set; - imx_mu_write(priv, val, IMX_MU_xCR); + imx_mu_write(priv, val, priv->dcfg->xCR); spin_unlock_irqrestore(&priv->xcr_lock, flags); return val; @@ -111,8 +125,8 @@ static irqreturn_t imx_mu_isr(int irq, void *p) struct imx_mu_con_priv *cp = chan->con_priv; u32 val, ctrl, dat; - ctrl = imx_mu_read(priv, IMX_MU_xCR); - val = imx_mu_read(priv, IMX_MU_xSR); + ctrl = imx_mu_read(priv, priv->dcfg->xCR); + val = imx_mu_read(priv, priv->dcfg->xSR); switch (cp->type) { case IMX_MU_TYPE_TX: @@ -138,10 +152,10 @@ static irqreturn_t imx_mu_isr(int irq, void *p) imx_mu_xcr_rmw(priv, 0, IMX_MU_xCR_TIEn(cp->idx)); mbox_chan_txdone(chan, 0); } else if (val == IMX_MU_xSR_RFn(cp->idx)) { - dat = imx_mu_read(priv, IMX_MU_xRRn(cp->idx)); + dat = imx_mu_read(priv, priv->dcfg->xRR[cp->idx]); mbox_chan_received_data(chan, (void *)&dat); } else if (val == IMX_MU_xSR_GIPn(cp->idx)) { - imx_mu_write(priv, IMX_MU_xSR_GIPn(cp->idx), IMX_MU_xSR); + imx_mu_write(priv, IMX_MU_xSR_GIPn(cp->idx), priv->dcfg->xSR); mbox_chan_received_data(chan, NULL); } else { dev_warn_ratelimited(priv->dev, "Not handled interrupt\n"); @@ -159,7 +173,7 @@ static int imx_mu_send_data(struct mbox_chan *chan, void *data) switch (cp->type) { case IMX_MU_TYPE_TX: - imx_mu_write(priv, *arg, IMX_MU_xTRn(cp->idx)); + imx_mu_write(priv, *arg, priv->dcfg->xTR[cp->idx]); imx_mu_xcr_rmw(priv, IMX_MU_xCR_TIEn(cp->idx), 0); break; case IMX_MU_TYPE_TXDB: @@ -270,7 +284,7 @@ static void imx_mu_init_generic(struct imx_mu_priv *priv) return; /* Set default MU configuration */ - imx_mu_write(priv, 0, IMX_MU_xCR); + imx_mu_write(priv, 0, priv->dcfg->xCR); } static int imx_mu_probe(struct platform_device *pdev) @@ -278,6 +292,7 @@ static int imx_mu_probe(struct platform_device *pdev) struct device *dev = &pdev->dev; struct device_node *np = dev->of_node; struct imx_mu_priv *priv; + const struct imx_mu_dcfg *dcfg; unsigned int i; int ret; @@ -295,6 +310,11 @@ static int imx_mu_probe(struct platform_device *pdev) if (priv->irq < 0) return priv->irq; + dcfg = of_device_get_match_data(dev); + if (!dcfg) + return -EINVAL; + priv->dcfg = dcfg; + priv->clk = devm_clk_get(dev, NULL); if (IS_ERR(priv->clk)) { if (PTR_ERR(priv->clk) != -ENOENT) @@ -348,7 +368,8 @@ static int imx_mu_remove(struct platform_device *pdev) } static const struct of_device_id imx_mu_dt_ids[] = { - { .compatible = "fsl,imx6sx-mu" }, + { .compatible = "fsl,imx7ulp-mu", .data = &imx_mu_cfg_imx7ulp }, + { .compatible = "fsl,imx6sx-mu", .data = &imx_mu_cfg_imx6sx }, { }, }; MODULE_DEVICE_TABLE(of, imx_mu_dt_ids); -- 2.7.4 ^ permalink raw reply related [flat|nested] 9+ messages in thread
end of thread, other threads:[~2019-08-05 5:10 UTC | newest] Thread overview: 9+ messages (download: mbox.gz / follow: Atom feed) -- links below jump to the message on this page -- 2019-08-05 2:51 [PATCH v5 0/4] mailbox: imx: bug fix and add support for imx v1 mu Richard Zhu 2019-08-05 2:51 ` [PATCH v5 1/4] mailbox: imx: Fix Tx doorbell shutdown path Richard Zhu 2019-08-05 4:38 ` Aisheng Dong 2019-08-05 5:10 ` Richard Zhu 2019-08-05 2:51 ` [PATCH v5 2/4] mailbox: imx: Clear the right interrupts at shutdown Richard Zhu 2019-08-05 4:43 ` Aisheng Dong 2019-08-05 2:51 ` [PATCH v5 3/4] dt-bindings: mailbox: imx-mu: add imx7ulp MU support Richard Zhu 2019-08-05 4:49 ` Aisheng Dong 2019-08-05 2:51 ` [PATCH v5 4/4] mailbox: imx: add support for imx v1 mu Richard Zhu
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