| Message ID | 20201221055623.31463-4-chiawei_wang@aspeedtech.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | Remove LPC register partitioning | expand |
On 12/21/2020 13:56, Chia-Wei, Wang wrote: > Add check against LPC device v2 compatible string to > ensure that the fixed device tree layout is adopted. > The LPC register offsets are also fixed accordingly. > > Signed-off-by: Chia-Wei, Wang <chiawei_wang@aspeedtech.com> > --- > drivers/char/ipmi/kcs_bmc_aspeed.c | 35 ++++++++++++++++++------------ > 1 file changed, 21 insertions(+), 14 deletions(-) > > diff --git a/drivers/char/ipmi/kcs_bmc_aspeed.c b/drivers/char/ipmi/kcs_bmc_aspeed.c > index a140203c079b..6283bfef4ea7 100644 > --- a/drivers/char/ipmi/kcs_bmc_aspeed.c > +++ b/drivers/char/ipmi/kcs_bmc_aspeed.c > @@ -27,7 +27,6 @@ > > #define KCS_CHANNEL_MAX 4 > > -/* mapped to lpc-bmc@0 IO space */ > #define LPC_HICR0 0x000 > #define LPC_HICR0_LPC3E BIT(7) > #define LPC_HICR0_LPC2E BIT(6) > @@ -52,15 +51,13 @@ > #define LPC_STR1 0x03C > #define LPC_STR2 0x040 > #define LPC_STR3 0x044 > - > -/* mapped to lpc-host@80 IO space */ > -#define LPC_HICRB 0x080 > +#define LPC_HICRB 0x100 > #define LPC_HICRB_IBFIF4 BIT(1) > #define LPC_HICRB_LPC4E BIT(0) > -#define LPC_LADR4 0x090 > -#define LPC_IDR4 0x094 > -#define LPC_ODR4 0x098 > -#define LPC_STR4 0x09C > +#define LPC_LADR4 0x110 > +#define LPC_IDR4 0x114 > +#define LPC_ODR4 0x118 > +#define LPC_STR4 0x11C > > struct aspeed_kcs_bmc { > struct regmap *map; > @@ -345,15 +342,25 @@ static int aspeed_kcs_probe(struct platform_device *pdev) > { > struct device *dev = &pdev->dev; > struct kcs_bmc *kcs_bmc; > - struct device_node *np; > + struct device_node *kcs_np; > + struct device_node *lpc_np; > int rc; > I think you can just use 'np' to do LPC compatible checking: np = pdev->dev.of_node->parent; if (!of_device_is_compatible(lpc_np, "aspeed,ast2400-lpc-v2") && !of_device_is_compatible(lpc_np, "aspeed,ast2500-lpc-v2") && !of_device_is_compatible(lpc_np, "aspeed,ast2600-lpc-v2")) { dev_err(dev, "unsupported LPC device binding\n"); return -ENODEV; } before: np = pdev->dev.of_node; if (of_device_is_compatible(np, "aspeed,ast2400-kcs-bmc") || of_device_is_compatible(np, "aspeed,ast2500-kcs-bmc")) Then the patch is clear. ;-) > - np = pdev->dev.of_node; > - if (of_device_is_compatible(np, "aspeed,ast2400-kcs-bmc") || > - of_device_is_compatible(np, "aspeed,ast2500-kcs-bmc")) > + kcs_np = dev->of_node; > + lpc_np = kcs_np->parent; > + > + if (!of_device_is_compatible(lpc_np, "aspeed,ast2400-lpc-v2") && > + !of_device_is_compatible(lpc_np, "aspeed,ast2500-lpc-v2") && > + !of_device_is_compatible(lpc_np, "aspeed,ast2600-lpc-v2")) { > + dev_err(dev, "unsupported LPC device binding\n"); > + return -ENODEV; > + } > + > + if (of_device_is_compatible(kcs_np, "aspeed,ast2400-kcs-bmc") || > + of_device_is_compatible(kcs_np, "aspeed,ast2500-kcs-bmc")) > kcs_bmc = aspeed_kcs_probe_of_v1(pdev); > - else if (of_device_is_compatible(np, "aspeed,ast2400-kcs-bmc-v2") || > - of_device_is_compatible(np, "aspeed,ast2500-kcs-bmc-v2")) > + else if (of_device_is_compatible(kcs_np, "aspeed,ast2400-kcs-bmc-v2") || > + of_device_is_compatible(kcs_np, "aspeed,ast2500-kcs-bmc-v2")) > kcs_bmc = aspeed_kcs_probe_of_v2(pdev); > else > return -EINVAL;
On 12/21/2020 15:53, Haiyue Wang wrote: > On 12/21/2020 13:56, Chia-Wei, Wang wrote: >> Add check against LPC device v2 compatible string to >> ensure that the fixed device tree layout is adopted. >> The LPC register offsets are also fixed accordingly. >> >> Signed-off-by: Chia-Wei, Wang <chiawei_wang@aspeedtech.com> >> --- >> drivers/char/ipmi/kcs_bmc_aspeed.c | 35 ++++++++++++++++++------------ >> 1 file changed, 21 insertions(+), 14 deletions(-) >> >> diff --git a/drivers/char/ipmi/kcs_bmc_aspeed.c >> b/drivers/char/ipmi/kcs_bmc_aspeed.c >> index a140203c079b..6283bfef4ea7 100644 >> --- a/drivers/char/ipmi/kcs_bmc_aspeed.c >> +++ b/drivers/char/ipmi/kcs_bmc_aspeed.c >> @@ -27,7 +27,6 @@ >> #define KCS_CHANNEL_MAX 4 >> -/* mapped to lpc-bmc@0 IO space */ >> #define LPC_HICR0 0x000 >> #define LPC_HICR0_LPC3E BIT(7) >> #define LPC_HICR0_LPC2E BIT(6) >> @@ -52,15 +51,13 @@ >> #define LPC_STR1 0x03C >> #define LPC_STR2 0x040 >> #define LPC_STR3 0x044 >> - >> -/* mapped to lpc-host@80 IO space */ >> -#define LPC_HICRB 0x080 >> +#define LPC_HICRB 0x100 >> #define LPC_HICRB_IBFIF4 BIT(1) >> #define LPC_HICRB_LPC4E BIT(0) >> -#define LPC_LADR4 0x090 >> -#define LPC_IDR4 0x094 >> -#define LPC_ODR4 0x098 >> -#define LPC_STR4 0x09C >> +#define LPC_LADR4 0x110 >> +#define LPC_IDR4 0x114 >> +#define LPC_ODR4 0x118 >> +#define LPC_STR4 0x11C >> struct aspeed_kcs_bmc { >> struct regmap *map; >> @@ -345,15 +342,25 @@ static int aspeed_kcs_probe(struct >> platform_device *pdev) >> { >> struct device *dev = &pdev->dev; >> struct kcs_bmc *kcs_bmc; >> - struct device_node *np; >> + struct device_node *kcs_np; >> + struct device_node *lpc_np; >> int rc; > > I think you can just use 'np' to do LPC compatible checking: > > np = pdev->dev.of_node->parent; > > if (!of_device_is_compatible(lpc_np, "aspeed,ast2400-lpc-v2") && > !of_device_is_compatible(lpc_np, "aspeed,ast2500-lpc-v2") && > !of_device_is_compatible(lpc_np, "aspeed,ast2600-lpc-v2")) { > dev_err(dev, "unsupported LPC device binding\n"); > return -ENODEV; > } > Typo: if (!of_device_is_compatible(np, "aspeed,ast2400-lpc-v2") && !of_device_is_compatible(np, "aspeed,ast2500-lpc-v2") && !of_device_is_compatible(np, "aspeed,ast2600-lpc-v2")) { dev_err(dev, "unsupported LPC device binding\n"); return -ENODEV; } > > before: > > np = pdev->dev.of_node; > if (of_device_is_compatible(np, "aspeed,ast2400-kcs-bmc") || > of_device_is_compatible(np, "aspeed,ast2500-kcs-bmc")) > > Then the patch is clear. ;-) > >> - np = pdev->dev.of_node; >> - if (of_device_is_compatible(np, "aspeed,ast2400-kcs-bmc") || >> - of_device_is_compatible(np, "aspeed,ast2500-kcs-bmc")) >> + kcs_np = dev->of_node; >> + lpc_np = kcs_np->parent; >> + >> + if (!of_device_is_compatible(lpc_np, "aspeed,ast2400-lpc-v2") && >> + !of_device_is_compatible(lpc_np, "aspeed,ast2500-lpc-v2") && >> + !of_device_is_compatible(lpc_np, "aspeed,ast2600-lpc-v2")) { >> + dev_err(dev, "unsupported LPC device binding\n"); >> + return -ENODEV; >> + } >> + >> + if (of_device_is_compatible(kcs_np, "aspeed,ast2400-kcs-bmc") || >> + of_device_is_compatible(kcs_np, "aspeed,ast2500-kcs-bmc")) >> kcs_bmc = aspeed_kcs_probe_of_v1(pdev); >> - else if (of_device_is_compatible(np, >> "aspeed,ast2400-kcs-bmc-v2") || >> - of_device_is_compatible(np, "aspeed,ast2500-kcs-bmc-v2")) >> + else if (of_device_is_compatible(kcs_np, >> "aspeed,ast2400-kcs-bmc-v2") || >> + of_device_is_compatible(kcs_np, >> "aspeed,ast2500-kcs-bmc-v2")) >> kcs_bmc = aspeed_kcs_probe_of_v2(pdev); >> else >> return -EINVAL;
Hi Haiyue, > -----Original Message----- > From: Haiyue Wang <haiyue.wang@linux.intel.com> > Sent: Monday, December 21, 2020 3:59 PM > Subject: Re: [PATCH v3 3/5] ipmi: kcs: aspeed: Adapt to new LPC DTS layout > > > On 12/21/2020 15:53, Haiyue Wang wrote: > > On 12/21/2020 13:56, Chia-Wei, Wang wrote: > >> Add check against LPC device v2 compatible string to ensure that the > >> fixed device tree layout is adopted. > >> The LPC register offsets are also fixed accordingly. > >> > >> Signed-off-by: Chia-Wei, Wang <chiawei_wang@aspeedtech.com> > >> --- > >> drivers/char/ipmi/kcs_bmc_aspeed.c | 35 > >> ++++++++++++++++++------------ > >> 1 file changed, 21 insertions(+), 14 deletions(-) > >> > >> diff --git a/drivers/char/ipmi/kcs_bmc_aspeed.c > >> b/drivers/char/ipmi/kcs_bmc_aspeed.c > >> index a140203c079b..6283bfef4ea7 100644 > >> --- a/drivers/char/ipmi/kcs_bmc_aspeed.c > >> +++ b/drivers/char/ipmi/kcs_bmc_aspeed.c > >> @@ -27,7 +27,6 @@ > >> #define KCS_CHANNEL_MAX 4 > >> -/* mapped to lpc-bmc@0 IO space */ > >> #define LPC_HICR0 0x000 > >> #define LPC_HICR0_LPC3E BIT(7) > >> #define LPC_HICR0_LPC2E BIT(6) @@ -52,15 > +51,13 @@ > >> #define LPC_STR1 0x03C > >> #define LPC_STR2 0x040 > >> #define LPC_STR3 0x044 > >> - > >> -/* mapped to lpc-host@80 IO space */ -#define > LPC_HICRB > >> 0x080 > >> +#define LPC_HICRB 0x100 > >> #define LPC_HICRB_IBFIF4 BIT(1) > >> #define LPC_HICRB_LPC4E BIT(0) -#define > LPC_LADR4 > >> 0x090 -#define LPC_IDR4 0x094 -#define > LPC_ODR4 > >> 0x098 -#define LPC_STR4 0x09C > >> +#define LPC_LADR4 0x110 > >> +#define LPC_IDR4 0x114 > >> +#define LPC_ODR4 0x118 > >> +#define LPC_STR4 0x11C > >> struct aspeed_kcs_bmc { > >> struct regmap *map; > >> @@ -345,15 +342,25 @@ static int aspeed_kcs_probe(struct > >> platform_device *pdev) > >> { > >> struct device *dev = &pdev->dev; > >> struct kcs_bmc *kcs_bmc; > >> - struct device_node *np; > >> + struct device_node *kcs_np; > >> + struct device_node *lpc_np; > >> int rc; > > > > I think you can just use 'np' to do LPC compatible checking: > > > > np = pdev->dev.of_node->parent; > > > > if (!of_device_is_compatible(lpc_np, "aspeed,ast2400-lpc-v2") && > > !of_device_is_compatible(lpc_np, "aspeed,ast2500-lpc-v2") && > > !of_device_is_compatible(lpc_np, "aspeed,ast2600-lpc-v2")) { > > dev_err(dev, "unsupported LPC device binding\n"); > > return -ENODEV; > > } > > > Typo: > > if (!of_device_is_compatible(np, "aspeed,ast2400-lpc-v2") && > !of_device_is_compatible(np, "aspeed,ast2500-lpc-v2") && > !of_device_is_compatible(np, "aspeed,ast2600-lpc-v2")) { > dev_err(dev, "unsupported LPC device binding\n"); > return -ENODEV; > } Thanks for the suggestion. Will revise the code after collecting reviewers' feedback. > > > > > > before: > > > > np = pdev->dev.of_node; > > if (of_device_is_compatible(np, "aspeed,ast2400-kcs-bmc") || > > of_device_is_compatible(np, "aspeed,ast2500-kcs-bmc")) > > > > Then the patch is clear. ;-) > > > >> - np = pdev->dev.of_node; > >> - if (of_device_is_compatible(np, "aspeed,ast2400-kcs-bmc") || > >> - of_device_is_compatible(np, > "aspeed,ast2500-kcs-bmc")) > >> + kcs_np = dev->of_node; > >> + lpc_np = kcs_np->parent; > >> + > >> + if (!of_device_is_compatible(lpc_np, "aspeed,ast2400-lpc-v2") && > >> + !of_device_is_compatible(lpc_np, "aspeed,ast2500-lpc-v2") > && > >> + !of_device_is_compatible(lpc_np, "aspeed,ast2600-lpc-v2")) { > >> + dev_err(dev, "unsupported LPC device binding\n"); > >> + return -ENODEV; > >> + } > >> + > >> + if (of_device_is_compatible(kcs_np, "aspeed,ast2400-kcs-bmc") || > >> + of_device_is_compatible(kcs_np, > >> +"aspeed,ast2500-kcs-bmc")) > >> kcs_bmc = aspeed_kcs_probe_of_v1(pdev); > >> - else if (of_device_is_compatible(np, > >> "aspeed,ast2400-kcs-bmc-v2") || > >> - of_device_is_compatible(np, > >> "aspeed,ast2500-kcs-bmc-v2")) > >> + else if (of_device_is_compatible(kcs_np, > >> "aspeed,ast2400-kcs-bmc-v2") || > >> + of_device_is_compatible(kcs_np, > >> "aspeed,ast2500-kcs-bmc-v2")) > >> kcs_bmc = aspeed_kcs_probe_of_v2(pdev); > >> else > >> return -EINVAL;
diff --git a/drivers/char/ipmi/kcs_bmc_aspeed.c b/drivers/char/ipmi/kcs_bmc_aspeed.c index a140203c079b..6283bfef4ea7 100644 --- a/drivers/char/ipmi/kcs_bmc_aspeed.c +++ b/drivers/char/ipmi/kcs_bmc_aspeed.c @@ -27,7 +27,6 @@ #define KCS_CHANNEL_MAX 4 -/* mapped to lpc-bmc@0 IO space */ #define LPC_HICR0 0x000 #define LPC_HICR0_LPC3E BIT(7) #define LPC_HICR0_LPC2E BIT(6) @@ -52,15 +51,13 @@ #define LPC_STR1 0x03C #define LPC_STR2 0x040 #define LPC_STR3 0x044 - -/* mapped to lpc-host@80 IO space */ -#define LPC_HICRB 0x080 +#define LPC_HICRB 0x100 #define LPC_HICRB_IBFIF4 BIT(1) #define LPC_HICRB_LPC4E BIT(0) -#define LPC_LADR4 0x090 -#define LPC_IDR4 0x094 -#define LPC_ODR4 0x098 -#define LPC_STR4 0x09C +#define LPC_LADR4 0x110 +#define LPC_IDR4 0x114 +#define LPC_ODR4 0x118 +#define LPC_STR4 0x11C struct aspeed_kcs_bmc { struct regmap *map; @@ -345,15 +342,25 @@ static int aspeed_kcs_probe(struct platform_device *pdev) { struct device *dev = &pdev->dev; struct kcs_bmc *kcs_bmc; - struct device_node *np; + struct device_node *kcs_np; + struct device_node *lpc_np; int rc; - np = pdev->dev.of_node; - if (of_device_is_compatible(np, "aspeed,ast2400-kcs-bmc") || - of_device_is_compatible(np, "aspeed,ast2500-kcs-bmc")) + kcs_np = dev->of_node; + lpc_np = kcs_np->parent; + + if (!of_device_is_compatible(lpc_np, "aspeed,ast2400-lpc-v2") && + !of_device_is_compatible(lpc_np, "aspeed,ast2500-lpc-v2") && + !of_device_is_compatible(lpc_np, "aspeed,ast2600-lpc-v2")) { + dev_err(dev, "unsupported LPC device binding\n"); + return -ENODEV; + } + + if (of_device_is_compatible(kcs_np, "aspeed,ast2400-kcs-bmc") || + of_device_is_compatible(kcs_np, "aspeed,ast2500-kcs-bmc")) kcs_bmc = aspeed_kcs_probe_of_v1(pdev); - else if (of_device_is_compatible(np, "aspeed,ast2400-kcs-bmc-v2") || - of_device_is_compatible(np, "aspeed,ast2500-kcs-bmc-v2")) + else if (of_device_is_compatible(kcs_np, "aspeed,ast2400-kcs-bmc-v2") || + of_device_is_compatible(kcs_np, "aspeed,ast2500-kcs-bmc-v2")) kcs_bmc = aspeed_kcs_probe_of_v2(pdev); else return -EINVAL;
Add check against LPC device v2 compatible string to ensure that the fixed device tree layout is adopted. The LPC register offsets are also fixed accordingly. Signed-off-by: Chia-Wei, Wang <chiawei_wang@aspeedtech.com> --- drivers/char/ipmi/kcs_bmc_aspeed.c | 35 ++++++++++++++++++------------ 1 file changed, 21 insertions(+), 14 deletions(-)