| Message ID | 20210408011637.5361-4-zev@bewilderbeest.net (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | serial: 8250_aspeed_vuart: generalized DT properties | expand |
Hi Zev, A couple of minor comments: On Thu, 8 Apr 2021, at 10:46, Zev Weiss wrote: > These allow describing all the Aspeed VUART attributes currently > available via sysfs. aspeed,sirq aspeed,lpc-interrupts now > provides a replacement for the > deprecated aspeed,sirq-polarity-sense property. > > Signed-off-by: Zev Weiss <zev@bewilderbeest.net> > --- > drivers/tty/serial/8250/8250_aspeed_vuart.c | 44 ++++++++++++++++++++- > 1 file changed, 43 insertions(+), 1 deletion(-) > > diff --git a/drivers/tty/serial/8250/8250_aspeed_vuart.c > b/drivers/tty/serial/8250/8250_aspeed_vuart.c > index 8433f8dbb186..75ef006fa24b 100644 > --- a/drivers/tty/serial/8250/8250_aspeed_vuart.c > +++ b/drivers/tty/serial/8250/8250_aspeed_vuart.c > @@ -28,6 +28,10 @@ > #define ASPEED_VUART_ADDRL 0x28 > #define ASPEED_VUART_ADDRH 0x2c > > +#define ASPEED_VUART_DEFAULT_LPC_ADDR 0x3f8 > +#define ASPEED_VUART_DEFAULT_SIRQ 4 > +#define ASPEED_VUART_DEFAULT_SIRQ_POLARITY IRQ_TYPE_LEVEL_LOW > + > struct aspeed_vuart { > struct device *dev; > void __iomem *regs; > @@ -393,7 +397,8 @@ static int aspeed_vuart_probe(struct platform_device *pdev) > struct aspeed_vuart *vuart; > struct device_node *np; > struct resource *res; > - u32 clk, prop; > + u32 clk, prop, sirq[2]; > + bool sirq_polarity; > int rc; > > np = pdev->dev.of_node; > @@ -501,6 +506,43 @@ static int aspeed_vuart_probe(struct platform_device *pdev) > of_node_put(sirq_polarity_sense_args.np); > } > > + rc = of_property_read_u32(np, "aspeed,lpc-io-reg", &prop); > + if (rc < 0) > + prop = ASPEED_VUART_DEFAULT_LPC_ADDR; > + > + rc = aspeed_vuart_set_lpc_address(vuart, prop); > + if (rc < 0) { > + dev_err(&pdev->dev, "invalid value in aspeed,lpc-io-reg property\n"); > + goto err_clk_disable; > + } > + > + rc = of_property_read_u32_array(np, "aspeed,lpc-interrupts", sirq, 2); > + if (rc < 0) { > + sirq[0] = ASPEED_VUART_DEFAULT_SIRQ; > + sirq[1] = ASPEED_VUART_DEFAULT_SIRQ_POLARITY; > + } > + > + rc = aspeed_vuart_set_sirq(vuart, sirq[0]); > + if (rc < 0) { > + dev_err(&pdev->dev, "invalid sirq number in aspeed,lpc-interrupts > property\n"); > + goto err_clk_disable; > + } > + > + switch (sirq[1]) { > + case IRQ_TYPE_LEVEL_LOW: > + sirq_polarity = false; > + break; > + case IRQ_TYPE_LEVEL_HIGH: > + sirq_polarity = true; > + break; > + default: > + dev_err(&pdev->dev, "invalid sirq polarity in aspeed,lpc-interrupts > property\n"); > + rc = -EINVAL; > + goto err_clk_disable; > + } A bit ugly open-coding the mapping and error handling, maybe worth a helper? Looks okay otherwise. Cheers, Andrew
On Fri, Apr 09, 2021 at 12:14:54AM CDT, Andrew Jeffery wrote: >Hi Zev, > >A couple of minor comments: > >On Thu, 8 Apr 2021, at 10:46, Zev Weiss wrote: >> These allow describing all the Aspeed VUART attributes currently >> available via sysfs. aspeed,sirq > >aspeed,lpc-interrupts now Ah right, thanks. > >> provides a replacement for the >> deprecated aspeed,sirq-polarity-sense property. >> >> Signed-off-by: Zev Weiss <zev@bewilderbeest.net> >> --- >> drivers/tty/serial/8250/8250_aspeed_vuart.c | 44 ++++++++++++++++++++- >> 1 file changed, 43 insertions(+), 1 deletion(-) >> >> diff --git a/drivers/tty/serial/8250/8250_aspeed_vuart.c >> b/drivers/tty/serial/8250/8250_aspeed_vuart.c >> index 8433f8dbb186..75ef006fa24b 100644 >> --- a/drivers/tty/serial/8250/8250_aspeed_vuart.c >> +++ b/drivers/tty/serial/8250/8250_aspeed_vuart.c >> @@ -28,6 +28,10 @@ >> #define ASPEED_VUART_ADDRL 0x28 >> #define ASPEED_VUART_ADDRH 0x2c >> >> +#define ASPEED_VUART_DEFAULT_LPC_ADDR 0x3f8 >> +#define ASPEED_VUART_DEFAULT_SIRQ 4 >> +#define ASPEED_VUART_DEFAULT_SIRQ_POLARITY IRQ_TYPE_LEVEL_LOW >> + >> struct aspeed_vuart { >> struct device *dev; >> void __iomem *regs; >> @@ -393,7 +397,8 @@ static int aspeed_vuart_probe(struct platform_device *pdev) >> struct aspeed_vuart *vuart; >> struct device_node *np; >> struct resource *res; >> - u32 clk, prop; >> + u32 clk, prop, sirq[2]; >> + bool sirq_polarity; >> int rc; >> >> np = pdev->dev.of_node; >> @@ -501,6 +506,43 @@ static int aspeed_vuart_probe(struct platform_device *pdev) >> of_node_put(sirq_polarity_sense_args.np); >> } >> >> + rc = of_property_read_u32(np, "aspeed,lpc-io-reg", &prop); >> + if (rc < 0) >> + prop = ASPEED_VUART_DEFAULT_LPC_ADDR; >> + >> + rc = aspeed_vuart_set_lpc_address(vuart, prop); >> + if (rc < 0) { >> + dev_err(&pdev->dev, "invalid value in aspeed,lpc-io-reg property\n"); >> + goto err_clk_disable; >> + } >> + >> + rc = of_property_read_u32_array(np, "aspeed,lpc-interrupts", sirq, 2); >> + if (rc < 0) { >> + sirq[0] = ASPEED_VUART_DEFAULT_SIRQ; >> + sirq[1] = ASPEED_VUART_DEFAULT_SIRQ_POLARITY; >> + } >> + >> + rc = aspeed_vuart_set_sirq(vuart, sirq[0]); >> + if (rc < 0) { >> + dev_err(&pdev->dev, "invalid sirq number in aspeed,lpc-interrupts > property\n"); >> + goto err_clk_disable; >> + } >> + >> + switch (sirq[1]) { >> + case IRQ_TYPE_LEVEL_LOW: >> + sirq_polarity = false; >> + break; >> + case IRQ_TYPE_LEVEL_HIGH: >> + sirq_polarity = true; >> + break; >> + default: >> + dev_err(&pdev->dev, "invalid sirq polarity in aspeed,lpc-interrupts >> property\n"); >> + rc = -EINVAL; >> + goto err_clk_disable; >> + } > >A bit ugly open-coding the mapping and error handling, maybe worth a helper? > Yeah, that sounds reasonable -- will do. Thanks! Zev
diff --git a/drivers/tty/serial/8250/8250_aspeed_vuart.c b/drivers/tty/serial/8250/8250_aspeed_vuart.c index 8433f8dbb186..75ef006fa24b 100644 --- a/drivers/tty/serial/8250/8250_aspeed_vuart.c +++ b/drivers/tty/serial/8250/8250_aspeed_vuart.c @@ -28,6 +28,10 @@ #define ASPEED_VUART_ADDRL 0x28 #define ASPEED_VUART_ADDRH 0x2c +#define ASPEED_VUART_DEFAULT_LPC_ADDR 0x3f8 +#define ASPEED_VUART_DEFAULT_SIRQ 4 +#define ASPEED_VUART_DEFAULT_SIRQ_POLARITY IRQ_TYPE_LEVEL_LOW + struct aspeed_vuart { struct device *dev; void __iomem *regs; @@ -393,7 +397,8 @@ static int aspeed_vuart_probe(struct platform_device *pdev) struct aspeed_vuart *vuart; struct device_node *np; struct resource *res; - u32 clk, prop; + u32 clk, prop, sirq[2]; + bool sirq_polarity; int rc; np = pdev->dev.of_node; @@ -501,6 +506,43 @@ static int aspeed_vuart_probe(struct platform_device *pdev) of_node_put(sirq_polarity_sense_args.np); } + rc = of_property_read_u32(np, "aspeed,lpc-io-reg", &prop); + if (rc < 0) + prop = ASPEED_VUART_DEFAULT_LPC_ADDR; + + rc = aspeed_vuart_set_lpc_address(vuart, prop); + if (rc < 0) { + dev_err(&pdev->dev, "invalid value in aspeed,lpc-io-reg property\n"); + goto err_clk_disable; + } + + rc = of_property_read_u32_array(np, "aspeed,lpc-interrupts", sirq, 2); + if (rc < 0) { + sirq[0] = ASPEED_VUART_DEFAULT_SIRQ; + sirq[1] = ASPEED_VUART_DEFAULT_SIRQ_POLARITY; + } + + rc = aspeed_vuart_set_sirq(vuart, sirq[0]); + if (rc < 0) { + dev_err(&pdev->dev, "invalid sirq number in aspeed,lpc-interrupts property\n"); + goto err_clk_disable; + } + + switch (sirq[1]) { + case IRQ_TYPE_LEVEL_LOW: + sirq_polarity = false; + break; + case IRQ_TYPE_LEVEL_HIGH: + sirq_polarity = true; + break; + default: + dev_err(&pdev->dev, "invalid sirq polarity in aspeed,lpc-interrupts property\n"); + rc = -EINVAL; + goto err_clk_disable; + } + + aspeed_vuart_set_sirq_polarity(vuart, sirq_polarity); + aspeed_vuart_set_enabled(vuart, true); aspeed_vuart_set_host_tx_discard(vuart, true); platform_set_drvdata(pdev, vuart);
These allow describing all the Aspeed VUART attributes currently available via sysfs. aspeed,sirq provides a replacement for the deprecated aspeed,sirq-polarity-sense property. Signed-off-by: Zev Weiss <zev@bewilderbeest.net> --- drivers/tty/serial/8250/8250_aspeed_vuart.c | 44 ++++++++++++++++++++- 1 file changed, 43 insertions(+), 1 deletion(-)