Re: [PATCHv1 1/3] OMAP UART: Adds omap-serial driver support.
On Wed, Oct 14, 2009 at 2:26 AM, Tony Lindgren t...@atomide.com wrote: * kishore kadiyala kishorek.kadiy...@gmail.com [091012 23:54]: Tony, On Fri, Oct 9, 2009 at 11:16 PM, Tony Lindgren t...@atomide.com wrote: * G, Manjunath Kondaiah manj...@ti.com [091008 00:41]: Govind, -Original Message- From: linux-omap-ow...@vger.kernel.org [mailto:linux-omap-ow...@vger.kernel.org] On Behalf Of Govindraj Sent: Thursday, October 08, 2009 11:44 AM To: Tony Lindgren Cc: Raja, Govindraj; linux-omap@vger.kernel.org; linux-ker...@vger.kernel.org; linux-ser...@vger.kernel.org Subject: Re: [PATCHv1 1/3] OMAP UART: Adds omap-serial driver support. On Thu, Oct 8, 2009 at 3:21 AM, Tony Lindgren t...@atomide.com wrote: * Govindraj.R govindraj.r...@ti.com [090924 03:29]: From: Govindraj R govindraj.r...@ti.com This patch adds support for OMAP3430-HIGH SPEED UART Controller. Signed-off-by: Govindraj R govindraj.r...@ti.com Reviewed-by: Alan Cox a...@lxorguk.ukuu.org.uk Reviewed-by: Tony Lindgren t...@atomide.com You should only add Reviewed-by if Alan or me have replied with it. So far I've only replied with some comments that have not yet been fixed, so we're few more steps from being Reviewd-by. snip diff --git a/drivers/serial/Kconfig b/drivers/serial/Kconfig index 6553833..67a7129 100644 --- a/drivers/serial/Kconfig +++ b/drivers/serial/Kconfig @@ -1359,6 +1359,53 @@ config SERIAL_OF_PLATFORM Currently, only 8250 compatible ports are supported, but others can easily be added. +config SERIAL_OMAP + bool OMAP serial port support + depends on ARM ARCH_OMAP + select SERIAL_CORE + help + If you have a machine based on an Texas Instruments OMAP CPU you + can enable its onboard serial ports by enabling this option. + +config SERIAL_OMAP_CONSOLE + bool Console on OMAP serial port + depends on SERIAL_OMAP + select SERIAL_CORE_CONSOLE + help + If you have enabled the serial port on the Texas Instruments OMAP + CPU you can make it the console by answering Y to this option. + + Even if you say Y here, the currently visible virtual console + (/dev/tty0) will still be used as the system console by default, but + you can alter that using a kernel command line option such as + console=ttyS0. (Try man bootparam or see the documentation of + your boot loader (lilo or loadlin) about how to pass options to the + kernel at boot time.) + +config SERIAL_OMAP_DMA_UART1 + bool UART1 DMA support + depends on SERIAL_OMAP + help + If you have enabled the serial port on the Texas Instruments OMAP + CPU you can enable the DMA transfer on UART 1 by answering + to this option. + +config SERIAL_OMAP_DMA_UART2 + bool UART2 DMA support + depends on SERIAL_OMAP + help + If you have enabled the serial port on the Texas Instruments OMAP + CPU you can enable the DMA transfer on UART 2 by answering + to this option. + +config SERIAL_OMAP_DMA_UART3 + bool UART3 DMA support + depends on SERIAL_OMAP + help + If you have enabled the serial port on the Texas Instruments OMAP + CPU you can enable the DMA transfer on UART 3 by answering + to this option. + config SERIAL_OF_PLATFORM_NWPSERIAL tristate NWP serial port driver depends on PPC_OF PPC_DCR There's absolutely no need for having Kconfig options for the DMA support. Please pass that in platform_data from the board-*.c files. This is the third time I'm commenting on the same issue! What's the point of posting these patches for review if the issues don't get solved? The omap-serial uart driver is designed to work either in interrupt mode or in DMA mode, We have provided this option so that one can select interrupt mode or DMA mode based on the uart usage, if somebody is using uart as console then interrupt mode will do, else if used with bluetooth which does huge data transfer then DMA mode can be selected. Don't you think this should be a configurable option using kconfig rather than passing as platform data? Nope. I think it should be platform_data and should be possible to override vith a kernel cmdline option. That's because we support compiling in and booting many boards the same kernel binary. if used as platform data then one has to modify platform data to switch between the interrupt and DMA mode. How about set some kernel cmdline options if you want to override the default settings? Using cmdline options, will make specific UART switch dynamically between Non-DMA
Re: [PATCHv1 1/3] OMAP UART: Adds omap-serial driver support.
* Govindraj govindraj...@gmail.com [091023 05:22]: On Wed, Oct 14, 2009 at 2:26 AM, Tony Lindgren t...@atomide.com wrote: * kishore kadiyala kishorek.kadiy...@gmail.com [091012 23:54]: Tony, On Fri, Oct 9, 2009 at 11:16 PM, Tony Lindgren t...@atomide.com wrote: * G, Manjunath Kondaiah manj...@ti.com [091008 00:41]: Govind, -Original Message- From: linux-omap-ow...@vger.kernel.org [mailto:linux-omap-ow...@vger.kernel.org] On Behalf Of Govindraj Sent: Thursday, October 08, 2009 11:44 AM To: Tony Lindgren Cc: Raja, Govindraj; linux-omap@vger.kernel.org; linux-ker...@vger.kernel.org; linux-ser...@vger.kernel.org Subject: Re: [PATCHv1 1/3] OMAP UART: Adds omap-serial driver support. On Thu, Oct 8, 2009 at 3:21 AM, Tony Lindgren t...@atomide.com wrote: * Govindraj.R govindraj.r...@ti.com [090924 03:29]: From: Govindraj R govindraj.r...@ti.com This patch adds support for OMAP3430-HIGH SPEED UART Controller. Signed-off-by: Govindraj R govindraj.r...@ti.com Reviewed-by: Alan Cox a...@lxorguk.ukuu.org.uk Reviewed-by: Tony Lindgren t...@atomide.com You should only add Reviewed-by if Alan or me have replied with it. So far I've only replied with some comments that have not yet been fixed, so we're few more steps from being Reviewd-by. snip diff --git a/drivers/serial/Kconfig b/drivers/serial/Kconfig index 6553833..67a7129 100644 --- a/drivers/serial/Kconfig +++ b/drivers/serial/Kconfig @@ -1359,6 +1359,53 @@ config SERIAL_OF_PLATFORM Currently, only 8250 compatible ports are supported, but others can easily be added. +config SERIAL_OMAP + bool OMAP serial port support + depends on ARM ARCH_OMAP + select SERIAL_CORE + help + If you have a machine based on an Texas Instruments OMAP CPU you + can enable its onboard serial ports by enabling this option. + +config SERIAL_OMAP_CONSOLE + bool Console on OMAP serial port + depends on SERIAL_OMAP + select SERIAL_CORE_CONSOLE + help + If you have enabled the serial port on the Texas Instruments OMAP + CPU you can make it the console by answering Y to this option. + + Even if you say Y here, the currently visible virtual console + (/dev/tty0) will still be used as the system console by default, but + you can alter that using a kernel command line option such as + console=ttyS0. (Try man bootparam or see the documentation of + your boot loader (lilo or loadlin) about how to pass options to the + kernel at boot time.) + +config SERIAL_OMAP_DMA_UART1 + bool UART1 DMA support + depends on SERIAL_OMAP + help + If you have enabled the serial port on the Texas Instruments OMAP + CPU you can enable the DMA transfer on UART 1 by answering + to this option. + +config SERIAL_OMAP_DMA_UART2 + bool UART2 DMA support + depends on SERIAL_OMAP + help + If you have enabled the serial port on the Texas Instruments OMAP + CPU you can enable the DMA transfer on UART 2 by answering + to this option. + +config SERIAL_OMAP_DMA_UART3 + bool UART3 DMA support + depends on SERIAL_OMAP + help + If you have enabled the serial port on the Texas Instruments OMAP + CPU you can enable the DMA transfer on UART 3 by answering + to this option. + config SERIAL_OF_PLATFORM_NWPSERIAL tristate NWP serial port driver depends on PPC_OF PPC_DCR There's absolutely no need for having Kconfig options for the DMA support. Please pass that in platform_data from the board-*.c files. This is the third time I'm commenting on the same issue! What's the point of posting these patches for review if the issues don't get solved? The omap-serial uart driver is designed to work either in interrupt mode or in DMA mode, We have provided this option so that one can select interrupt mode or DMA mode based on the uart usage, if somebody is using uart as console then interrupt mode will do, else if used with bluetooth which does huge data transfer then DMA mode can be selected. Don't you think this should be a configurable option using kconfig rather than passing as platform data? Nope. I think it should be platform_data and should be possible to override vith a kernel cmdline option. That's because we support compiling in and booting many boards the same kernel binary. if used as platform data then one has to modify platform data to switch between the interrupt and DMA mode
Re: [PATCHv1 1/3] OMAP UART: Adds omap-serial driver support.
Tony, On Fri, Oct 9, 2009 at 11:16 PM, Tony Lindgren t...@atomide.com wrote: * G, Manjunath Kondaiah manj...@ti.com [091008 00:41]: Govind, -Original Message- From: linux-omap-ow...@vger.kernel.org [mailto:linux-omap-ow...@vger.kernel.org] On Behalf Of Govindraj Sent: Thursday, October 08, 2009 11:44 AM To: Tony Lindgren Cc: Raja, Govindraj; linux-omap@vger.kernel.org; linux-ker...@vger.kernel.org; linux-ser...@vger.kernel.org Subject: Re: [PATCHv1 1/3] OMAP UART: Adds omap-serial driver support. On Thu, Oct 8, 2009 at 3:21 AM, Tony Lindgren t...@atomide.com wrote: * Govindraj.R govindraj.r...@ti.com [090924 03:29]: From: Govindraj R govindraj.r...@ti.com This patch adds support for OMAP3430-HIGH SPEED UART Controller. Signed-off-by: Govindraj R govindraj.r...@ti.com Reviewed-by: Alan Cox a...@lxorguk.ukuu.org.uk Reviewed-by: Tony Lindgren t...@atomide.com You should only add Reviewed-by if Alan or me have replied with it. So far I've only replied with some comments that have not yet been fixed, so we're few more steps from being Reviewd-by. snip diff --git a/drivers/serial/Kconfig b/drivers/serial/Kconfig index 6553833..67a7129 100644 --- a/drivers/serial/Kconfig +++ b/drivers/serial/Kconfig @@ -1359,6 +1359,53 @@ config SERIAL_OF_PLATFORM Currently, only 8250 compatible ports are supported, but others can easily be added. +config SERIAL_OMAP + bool OMAP serial port support + depends on ARM ARCH_OMAP + select SERIAL_CORE + help + If you have a machine based on an Texas Instruments OMAP CPU you + can enable its onboard serial ports by enabling this option. + +config SERIAL_OMAP_CONSOLE + bool Console on OMAP serial port + depends on SERIAL_OMAP + select SERIAL_CORE_CONSOLE + help + If you have enabled the serial port on the Texas Instruments OMAP + CPU you can make it the console by answering Y to this option. + + Even if you say Y here, the currently visible virtual console + (/dev/tty0) will still be used as the system console by default, but + you can alter that using a kernel command line option such as + console=ttyS0. (Try man bootparam or see the documentation of + your boot loader (lilo or loadlin) about how to pass options to the + kernel at boot time.) + +config SERIAL_OMAP_DMA_UART1 + bool UART1 DMA support + depends on SERIAL_OMAP + help + If you have enabled the serial port on the Texas Instruments OMAP + CPU you can enable the DMA transfer on UART 1 by answering + to this option. + +config SERIAL_OMAP_DMA_UART2 + bool UART2 DMA support + depends on SERIAL_OMAP + help + If you have enabled the serial port on the Texas Instruments OMAP + CPU you can enable the DMA transfer on UART 2 by answering + to this option. + +config SERIAL_OMAP_DMA_UART3 + bool UART3 DMA support + depends on SERIAL_OMAP + help + If you have enabled the serial port on the Texas Instruments OMAP + CPU you can enable the DMA transfer on UART 3 by answering + to this option. + config SERIAL_OF_PLATFORM_NWPSERIAL tristate NWP serial port driver depends on PPC_OF PPC_DCR There's absolutely no need for having Kconfig options for the DMA support. Please pass that in platform_data from the board-*.c files. This is the third time I'm commenting on the same issue! What's the point of posting these patches for review if the issues don't get solved? The omap-serial uart driver is designed to work either in interrupt mode or in DMA mode, We have provided this option so that one can select interrupt mode or DMA mode based on the uart usage, if somebody is using uart as console then interrupt mode will do, else if used with bluetooth which does huge data transfer then DMA mode can be selected. Don't you think this should be a configurable option using kconfig rather than passing as platform data? Nope. I think it should be platform_data and should be possible to override vith a kernel cmdline option. That's because we support compiling in and booting many boards the same kernel binary. if used as platform data then one has to modify platform data to switch between the interrupt and DMA mode. How about set some kernel cmdline options if you want to override the default settings? Using cmdline options, will make specific UART switch dynamically between Non-DMA and DMA mode which is not handled in the driver. how abt using bootargs to share this Mode info ? Usage of UART is board dependent. It's usage will not change dynamically for a given board. This can be removed from Kconfig and move it to respective board file
Re: [PATCHv1 1/3] OMAP UART: Adds omap-serial driver support.
* kishore kadiyala kishorek.kadiy...@gmail.com [091012 23:54]: Tony, On Fri, Oct 9, 2009 at 11:16 PM, Tony Lindgren t...@atomide.com wrote: * G, Manjunath Kondaiah manj...@ti.com [091008 00:41]: Govind, -Original Message- From: linux-omap-ow...@vger.kernel.org [mailto:linux-omap-ow...@vger.kernel.org] On Behalf Of Govindraj Sent: Thursday, October 08, 2009 11:44 AM To: Tony Lindgren Cc: Raja, Govindraj; linux-omap@vger.kernel.org; linux-ker...@vger.kernel.org; linux-ser...@vger.kernel.org Subject: Re: [PATCHv1 1/3] OMAP UART: Adds omap-serial driver support. On Thu, Oct 8, 2009 at 3:21 AM, Tony Lindgren t...@atomide.com wrote: * Govindraj.R govindraj.r...@ti.com [090924 03:29]: From: Govindraj R govindraj.r...@ti.com This patch adds support for OMAP3430-HIGH SPEED UART Controller. Signed-off-by: Govindraj R govindraj.r...@ti.com Reviewed-by: Alan Cox a...@lxorguk.ukuu.org.uk Reviewed-by: Tony Lindgren t...@atomide.com You should only add Reviewed-by if Alan or me have replied with it. So far I've only replied with some comments that have not yet been fixed, so we're few more steps from being Reviewd-by. snip diff --git a/drivers/serial/Kconfig b/drivers/serial/Kconfig index 6553833..67a7129 100644 --- a/drivers/serial/Kconfig +++ b/drivers/serial/Kconfig @@ -1359,6 +1359,53 @@ config SERIAL_OF_PLATFORM Currently, only 8250 compatible ports are supported, but others can easily be added. +config SERIAL_OMAP + bool OMAP serial port support + depends on ARM ARCH_OMAP + select SERIAL_CORE + help + If you have a machine based on an Texas Instruments OMAP CPU you + can enable its onboard serial ports by enabling this option. + +config SERIAL_OMAP_CONSOLE + bool Console on OMAP serial port + depends on SERIAL_OMAP + select SERIAL_CORE_CONSOLE + help + If you have enabled the serial port on the Texas Instruments OMAP + CPU you can make it the console by answering Y to this option. + + Even if you say Y here, the currently visible virtual console + (/dev/tty0) will still be used as the system console by default, but + you can alter that using a kernel command line option such as + console=ttyS0. (Try man bootparam or see the documentation of + your boot loader (lilo or loadlin) about how to pass options to the + kernel at boot time.) + +config SERIAL_OMAP_DMA_UART1 + bool UART1 DMA support + depends on SERIAL_OMAP + help + If you have enabled the serial port on the Texas Instruments OMAP + CPU you can enable the DMA transfer on UART 1 by answering + to this option. + +config SERIAL_OMAP_DMA_UART2 + bool UART2 DMA support + depends on SERIAL_OMAP + help + If you have enabled the serial port on the Texas Instruments OMAP + CPU you can enable the DMA transfer on UART 2 by answering + to this option. + +config SERIAL_OMAP_DMA_UART3 + bool UART3 DMA support + depends on SERIAL_OMAP + help + If you have enabled the serial port on the Texas Instruments OMAP + CPU you can enable the DMA transfer on UART 3 by answering + to this option. + config SERIAL_OF_PLATFORM_NWPSERIAL tristate NWP serial port driver depends on PPC_OF PPC_DCR There's absolutely no need for having Kconfig options for the DMA support. Please pass that in platform_data from the board-*.c files. This is the third time I'm commenting on the same issue! What's the point of posting these patches for review if the issues don't get solved? The omap-serial uart driver is designed to work either in interrupt mode or in DMA mode, We have provided this option so that one can select interrupt mode or DMA mode based on the uart usage, if somebody is using uart as console then interrupt mode will do, else if used with bluetooth which does huge data transfer then DMA mode can be selected. Don't you think this should be a configurable option using kconfig rather than passing as platform data? Nope. I think it should be platform_data and should be possible to override vith a kernel cmdline option. That's because we support compiling in and booting many boards the same kernel binary. if used as platform data then one has to modify platform data to switch between the interrupt and DMA mode. How about set some kernel cmdline options if you want to override the default settings? Using cmdline options, will make specific UART switch dynamically between Non-DMA and DMA mode which is not handled in the driver. Switching between dma
Re: [PATCHv1 1/3] OMAP UART: Adds omap-serial driver support.
* G, Manjunath Kondaiah manj...@ti.com [091008 00:41]: Govind, -Original Message- From: linux-omap-ow...@vger.kernel.org [mailto:linux-omap-ow...@vger.kernel.org] On Behalf Of Govindraj Sent: Thursday, October 08, 2009 11:44 AM To: Tony Lindgren Cc: Raja, Govindraj; linux-omap@vger.kernel.org; linux-ker...@vger.kernel.org; linux-ser...@vger.kernel.org Subject: Re: [PATCHv1 1/3] OMAP UART: Adds omap-serial driver support. On Thu, Oct 8, 2009 at 3:21 AM, Tony Lindgren t...@atomide.com wrote: * Govindraj.R govindraj.r...@ti.com [090924 03:29]: From: Govindraj R govindraj.r...@ti.com This patch adds support for OMAP3430-HIGH SPEED UART Controller. Signed-off-by: Govindraj R govindraj.r...@ti.com Reviewed-by: Alan Cox a...@lxorguk.ukuu.org.uk Reviewed-by: Tony Lindgren t...@atomide.com You should only add Reviewed-by if Alan or me have replied with it. So far I've only replied with some comments that have not yet been fixed, so we're few more steps from being Reviewd-by. snip diff --git a/drivers/serial/Kconfig b/drivers/serial/Kconfig index 6553833..67a7129 100644 --- a/drivers/serial/Kconfig +++ b/drivers/serial/Kconfig @@ -1359,6 +1359,53 @@ config SERIAL_OF_PLATFORM Currently, only 8250 compatible ports are supported, but others can easily be added. +config SERIAL_OMAP + bool OMAP serial port support + depends on ARM ARCH_OMAP + select SERIAL_CORE + help + If you have a machine based on an Texas Instruments OMAP CPU you + can enable its onboard serial ports by enabling this option. + +config SERIAL_OMAP_CONSOLE + bool Console on OMAP serial port + depends on SERIAL_OMAP + select SERIAL_CORE_CONSOLE + help + If you have enabled the serial port on the Texas Instruments OMAP + CPU you can make it the console by answering Y to this option. + + Even if you say Y here, the currently visible virtual console + (/dev/tty0) will still be used as the system console by default, but + you can alter that using a kernel command line option such as + console=ttyS0. (Try man bootparam or see the documentation of + your boot loader (lilo or loadlin) about how to pass options to the + kernel at boot time.) + +config SERIAL_OMAP_DMA_UART1 + bool UART1 DMA support + depends on SERIAL_OMAP + help + If you have enabled the serial port on the Texas Instruments OMAP + CPU you can enable the DMA transfer on UART 1 by answering + to this option. + +config SERIAL_OMAP_DMA_UART2 + bool UART2 DMA support + depends on SERIAL_OMAP + help + If you have enabled the serial port on the Texas Instruments OMAP + CPU you can enable the DMA transfer on UART 2 by answering + to this option. + +config SERIAL_OMAP_DMA_UART3 + bool UART3 DMA support + depends on SERIAL_OMAP + help + If you have enabled the serial port on the Texas Instruments OMAP + CPU you can enable the DMA transfer on UART 3 by answering + to this option. + config SERIAL_OF_PLATFORM_NWPSERIAL tristate NWP serial port driver depends on PPC_OF PPC_DCR There's absolutely no need for having Kconfig options for the DMA support. Please pass that in platform_data from the board-*.c files. This is the third time I'm commenting on the same issue! What's the point of posting these patches for review if the issues don't get solved? The omap-serial uart driver is designed to work either in interrupt mode or in DMA mode, We have provided this option so that one can select interrupt mode or DMA mode based on the uart usage, if somebody is using uart as console then interrupt mode will do, else if used with bluetooth which does huge data transfer then DMA mode can be selected. Don't you think this should be a configurable option using kconfig rather than passing as platform data? Nope. I think it should be platform_data and should be possible to override vith a kernel cmdline option. That's because we support compiling in and booting many boards the same kernel binary. if used as platform data then one has to modify platform data to switch between the interrupt and DMA mode. How about set some kernel cmdline options if you want to override the default settings? Usage of UART is board dependent. It's usage will not change dynamically for a given board. This can be removed from Kconfig and move it to respective board file- board-*.c Or can be changed from kernel cmdline if necessary. Regards, Tony -- To unsubscribe from this list: send the line unsubscribe linux-omap in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org
Re: [PATCHv1 1/3] OMAP UART: Adds omap-serial driver support.
On Thu, Oct 8, 2009 at 3:21 AM, Tony Lindgren t...@atomide.com wrote: * Govindraj.R govindraj.r...@ti.com [090924 03:29]: From: Govindraj R govindraj.r...@ti.com This patch adds support for OMAP3430-HIGH SPEED UART Controller. Signed-off-by: Govindraj R govindraj.r...@ti.com Reviewed-by: Alan Cox a...@lxorguk.ukuu.org.uk Reviewed-by: Tony Lindgren t...@atomide.com You should only add Reviewed-by if Alan or me have replied with it. So far I've only replied with some comments that have not yet been fixed, so we're few more steps from being Reviewd-by. snip diff --git a/drivers/serial/Kconfig b/drivers/serial/Kconfig index 6553833..67a7129 100644 --- a/drivers/serial/Kconfig +++ b/drivers/serial/Kconfig @@ -1359,6 +1359,53 @@ config SERIAL_OF_PLATFORM Currently, only 8250 compatible ports are supported, but others can easily be added. +config SERIAL_OMAP + bool OMAP serial port support + depends on ARM ARCH_OMAP + select SERIAL_CORE + help + If you have a machine based on an Texas Instruments OMAP CPU you + can enable its onboard serial ports by enabling this option. + +config SERIAL_OMAP_CONSOLE + bool Console on OMAP serial port + depends on SERIAL_OMAP + select SERIAL_CORE_CONSOLE + help + If you have enabled the serial port on the Texas Instruments OMAP + CPU you can make it the console by answering Y to this option. + + Even if you say Y here, the currently visible virtual console + (/dev/tty0) will still be used as the system console by default, but + you can alter that using a kernel command line option such as + console=ttyS0. (Try man bootparam or see the documentation of + your boot loader (lilo or loadlin) about how to pass options to the + kernel at boot time.) + +config SERIAL_OMAP_DMA_UART1 + bool UART1 DMA support + depends on SERIAL_OMAP + help + If you have enabled the serial port on the Texas Instruments OMAP + CPU you can enable the DMA transfer on UART 1 by answering + to this option. + +config SERIAL_OMAP_DMA_UART2 + bool UART2 DMA support + depends on SERIAL_OMAP + help + If you have enabled the serial port on the Texas Instruments OMAP + CPU you can enable the DMA transfer on UART 2 by answering + to this option. + +config SERIAL_OMAP_DMA_UART3 + bool UART3 DMA support + depends on SERIAL_OMAP + help + If you have enabled the serial port on the Texas Instruments OMAP + CPU you can enable the DMA transfer on UART 3 by answering + to this option. + config SERIAL_OF_PLATFORM_NWPSERIAL tristate NWP serial port driver depends on PPC_OF PPC_DCR There's absolutely no need for having Kconfig options for the DMA support. Please pass that in platform_data from the board-*.c files. This is the third time I'm commenting on the same issue! What's the point of posting these patches for review if the issues don't get solved? The omap-serial uart driver is designed to work either in interrupt mode or in DMA mode, We have provided this option so that one can select interrupt mode or DMA mode based on the uart usage, if somebody is using uart as console then interrupt mode will do, else if used with bluetooth which does huge data transfer then DMA mode can be selected. Don't you think this should be a configurable option using kconfig rather than passing as platform data? if used as platform data then one has to modify platform data to switch between the interrupt and DMA mode. Regards, Govindraj.R Regards, Tony -- To unsubscribe from this list: send the line unsubscribe linux-serial in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html -- To unsubscribe from this list: send the line unsubscribe linux-omap in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
Re: [PATCHv1 1/3] OMAP UART: Adds omap-serial driver support.
On Sat, Oct 3, 2009 at 4:11 AM, Jonathan McDowell nood...@earth.li wrote: On Thu, Sep 24, 2009 at 03:57:13PM +0530, Govindraj.R wrote: From: Govindraj R govindraj.r...@ti.com This patch adds support for OMAP3430-HIGH SPEED UART Controller. Signed-off-by: Govindraj R govindraj.r...@ti.com Reviewed-by: Alan Cox a...@lxorguk.ukuu.org.uk Reviewed-by: Tony Lindgren t...@atomide.com --- +config SERIAL_OMAP + bool OMAP serial port support + depends on ARM ARCH_OMAP + select SERIAL_CORE + help + If you have a machine based on an Texas Instruments OMAP CPU you + can enable its onboard serial ports by enabling this option. If it's OMAP3 hardware then should the depends on be ARCH_OMAP3 || ARCH_OMAP4, rather than allowing it for OMAP1 + 2 as well? J. Agree. Will do the changes. -- Revd. Jonathan McDowell, ULC | If they can't take a jokefuck 'em. -- To unsubscribe from this list: send the line unsubscribe linux-omap in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html -- --- Regards, Govindraj.R -- To unsubscribe from this list: send the line unsubscribe linux-omap in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
RE: [PATCHv1 1/3] OMAP UART: Adds omap-serial driver support.
Govind, -Original Message- From: linux-omap-ow...@vger.kernel.org [mailto:linux-omap-ow...@vger.kernel.org] On Behalf Of Govindraj Sent: Thursday, October 08, 2009 11:44 AM To: Tony Lindgren Cc: Raja, Govindraj; linux-omap@vger.kernel.org; linux-ker...@vger.kernel.org; linux-ser...@vger.kernel.org Subject: Re: [PATCHv1 1/3] OMAP UART: Adds omap-serial driver support. On Thu, Oct 8, 2009 at 3:21 AM, Tony Lindgren t...@atomide.com wrote: * Govindraj.R govindraj.r...@ti.com [090924 03:29]: From: Govindraj R govindraj.r...@ti.com This patch adds support for OMAP3430-HIGH SPEED UART Controller. Signed-off-by: Govindraj R govindraj.r...@ti.com Reviewed-by: Alan Cox a...@lxorguk.ukuu.org.uk Reviewed-by: Tony Lindgren t...@atomide.com You should only add Reviewed-by if Alan or me have replied with it. So far I've only replied with some comments that have not yet been fixed, so we're few more steps from being Reviewd-by. snip diff --git a/drivers/serial/Kconfig b/drivers/serial/Kconfig index 6553833..67a7129 100644 --- a/drivers/serial/Kconfig +++ b/drivers/serial/Kconfig @@ -1359,6 +1359,53 @@ config SERIAL_OF_PLATFORM Currently, only 8250 compatible ports are supported, but others can easily be added. +config SERIAL_OMAP + bool OMAP serial port support + depends on ARM ARCH_OMAP + select SERIAL_CORE + help + If you have a machine based on an Texas Instruments OMAP CPU you + can enable its onboard serial ports by enabling this option. + +config SERIAL_OMAP_CONSOLE + bool Console on OMAP serial port + depends on SERIAL_OMAP + select SERIAL_CORE_CONSOLE + help + If you have enabled the serial port on the Texas Instruments OMAP + CPU you can make it the console by answering Y to this option. + + Even if you say Y here, the currently visible virtual console + (/dev/tty0) will still be used as the system console by default, but + you can alter that using a kernel command line option such as + console=ttyS0. (Try man bootparam or see the documentation of + your boot loader (lilo or loadlin) about how to pass options to the + kernel at boot time.) + +config SERIAL_OMAP_DMA_UART1 + bool UART1 DMA support + depends on SERIAL_OMAP + help + If you have enabled the serial port on the Texas Instruments OMAP + CPU you can enable the DMA transfer on UART 1 by answering + to this option. + +config SERIAL_OMAP_DMA_UART2 + bool UART2 DMA support + depends on SERIAL_OMAP + help + If you have enabled the serial port on the Texas Instruments OMAP + CPU you can enable the DMA transfer on UART 2 by answering + to this option. + +config SERIAL_OMAP_DMA_UART3 + bool UART3 DMA support + depends on SERIAL_OMAP + help + If you have enabled the serial port on the Texas Instruments OMAP + CPU you can enable the DMA transfer on UART 3 by answering + to this option. + config SERIAL_OF_PLATFORM_NWPSERIAL tristate NWP serial port driver depends on PPC_OF PPC_DCR There's absolutely no need for having Kconfig options for the DMA support. Please pass that in platform_data from the board-*.c files. This is the third time I'm commenting on the same issue! What's the point of posting these patches for review if the issues don't get solved? The omap-serial uart driver is designed to work either in interrupt mode or in DMA mode, We have provided this option so that one can select interrupt mode or DMA mode based on the uart usage, if somebody is using uart as console then interrupt mode will do, else if used with bluetooth which does huge data transfer then DMA mode can be selected. Don't you think this should be a configurable option using kconfig rather than passing as platform data? if used as platform data then one has to modify platform data to switch between the interrupt and DMA mode. Regards, Govindraj.R Usage of UART is board dependent. It's usage will not change dynamically for a given board. This can be removed from Kconfig and move it to respective board file- board-*.c Regards, Tony -- To unsubscribe from this list: send the line unsubscribe linux-serial in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html -- To unsubscribe from this list: send the line unsubscribe linux-omap in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html -- To unsubscribe from this list: send the line unsubscribe linux-omap in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
Re: [PATCHv1 1/3] OMAP UART: Adds omap-serial driver support.
* Govindraj.R govindraj.r...@ti.com [090924 03:29]: From: Govindraj R govindraj.r...@ti.com This patch adds support for OMAP3430-HIGH SPEED UART Controller. Signed-off-by:Govindraj R govindraj.r...@ti.com Reviewed-by: Alan Cox a...@lxorguk.ukuu.org.uk Reviewed-by: Tony Lindgren t...@atomide.com You should only add Reviewed-by if Alan or me have replied with it. So far I've only replied with some comments that have not yet been fixed, so we're few more steps from being Reviewd-by. snip diff --git a/drivers/serial/Kconfig b/drivers/serial/Kconfig index 6553833..67a7129 100644 --- a/drivers/serial/Kconfig +++ b/drivers/serial/Kconfig @@ -1359,6 +1359,53 @@ config SERIAL_OF_PLATFORM Currently, only 8250 compatible ports are supported, but others can easily be added. +config SERIAL_OMAP + bool OMAP serial port support + depends on ARM ARCH_OMAP + select SERIAL_CORE + help + If you have a machine based on an Texas Instruments OMAP CPU you + can enable its onboard serial ports by enabling this option. + +config SERIAL_OMAP_CONSOLE + bool Console on OMAP serial port + depends on SERIAL_OMAP + select SERIAL_CORE_CONSOLE + help + If you have enabled the serial port on the Texas Instruments OMAP + CPU you can make it the console by answering Y to this option. + + Even if you say Y here, the currently visible virtual console + (/dev/tty0) will still be used as the system console by default, but + you can alter that using a kernel command line option such as + console=ttyS0. (Try man bootparam or see the documentation of + your boot loader (lilo or loadlin) about how to pass options to the + kernel at boot time.) + +config SERIAL_OMAP_DMA_UART1 + bool UART1 DMA support + depends on SERIAL_OMAP + help + If you have enabled the serial port on the Texas Instruments OMAP + CPU you can enable the DMA transfer on UART 1 by answering + to this option. + +config SERIAL_OMAP_DMA_UART2 + bool UART2 DMA support + depends on SERIAL_OMAP + help + If you have enabled the serial port on the Texas Instruments OMAP + CPU you can enable the DMA transfer on UART 2 by answering + to this option. + +config SERIAL_OMAP_DMA_UART3 + bool UART3 DMA support + depends on SERIAL_OMAP + help + If you have enabled the serial port on the Texas Instruments OMAP + CPU you can enable the DMA transfer on UART 3 by answering + to this option. + config SERIAL_OF_PLATFORM_NWPSERIAL tristate NWP serial port driver depends on PPC_OF PPC_DCR There's absolutely no need for having Kconfig options for the DMA support. Please pass that in platform_data from the board-*.c files. This is the third time I'm commenting on the same issue! What's the point of posting these patches for review if the issues don't get solved? Regards, Tony -- To unsubscribe from this list: send the line unsubscribe linux-omap in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
Re: [PATCHv1 1/3] OMAP UART: Adds omap-serial driver support.
On Thu, Sep 24, 2009 at 03:57:13PM +0530, Govindraj.R wrote: From: Govindraj R govindraj.r...@ti.com This patch adds support for OMAP3430-HIGH SPEED UART Controller. Signed-off-by:Govindraj R govindraj.r...@ti.com Reviewed-by: Alan Cox a...@lxorguk.ukuu.org.uk Reviewed-by: Tony Lindgren t...@atomide.com --- +config SERIAL_OMAP + bool OMAP serial port support + depends on ARM ARCH_OMAP + select SERIAL_CORE + help + If you have a machine based on an Texas Instruments OMAP CPU you + can enable its onboard serial ports by enabling this option. If it's OMAP3 hardware then should the depends on be ARCH_OMAP3 || ARCH_OMAP4, rather than allowing it for OMAP1 + 2 as well? J. -- Revd. Jonathan McDowell, ULC | If they can't take a jokefuck 'em. -- To unsubscribe from this list: send the line unsubscribe linux-omap in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
[PATCHv1 1/3] OMAP UART: Adds omap-serial driver support.
From: Govindraj R govindraj.r...@ti.com
This patch adds support for OMAP3430-HIGH SPEED UART Controller.
Signed-off-by: Govindraj R govindraj.r...@ti.com
Reviewed-by: Alan Cox a...@lxorguk.ukuu.org.uk
Reviewed-by: Tony Lindgren t...@atomide.com
---
arch/arm/plat-omap/include/mach/omap-serial.h | 156 ++
drivers/serial/Kconfig| 47
drivers/serial/Makefile |1
drivers/serial/omap-serial.c | 1745 ++
4 files changed, 1949 insertions(+)
diff --git a/arch/arm/plat-omap/include/mach/omap-serial.h
b/arch/arm/plat-omap/include/mach/omap-serial.h
new file mode 100644
index 000..17b6d17
--- /dev/null
+++ b/arch/arm/plat-omap/include/mach/omap-serial.h
@@ -0,0 +1,156 @@
+/*
+ * arch/arm/plat-omap/include/mach/omap-serial.h
+ *
+ * Driver for OMAP3430 UART controller.
+ *
+ * Copyright (C) 2009 Texas Instruments.
+ *
+ * Authors:
+ * Govindraj R govindraj.r...@ti.com
+ * Thara Gopinath th...@ti.com
+ *
+ * This file is licensed under the terms of the GNU General Public License
+ * version 2. This program is licensed as is without any warranty of any
+ * kind, whether express or implied.
+ */
+
+#ifndef __OMAP_SERIAL_H__
+#define __OMAP_SERIAL_H__
+
+#include linux/serial_core.h
+#include linux/platform_device.h
+
+#ifdef CONFIG_PM
+#include ../arch/arm/mach-omap2/prm.h
+#include ../arch/arm/mach-omap2/pm.h
+#include ../arch/arm/mach-omap2/prm-regbits-34xx.h
+#include mach/control.h
+#endif
+
+/* TI OMAP CONSOLE */
+#define PORT_OMAP 86
+#define DRIVER_NAMEomap-hsuart
+
+/* tty device name used by omap-serial driver,
+ * in bootargs we specify as console=ttyO0 if uart1
+ * is used as console uart.
+ */
+#define DEVICE_NAMEttyO
+
+/*
+ * We default to IRQ0 for the no irq hack. Some
+ * machine types want others as well - they're free
+ * to redefine this in their header file.
+ */
+#define is_real_interrupt(irq) ((irq) != 0)
+
+#if defined(CONFIG_SERIAL_OMAP_CONSOLE) defined(CONFIG_MAGIC_SYSRQ)
+#define SUPPORT_SYSRQ
+#endif
+
+#ifdef CONFIG_ARCH_OMAP34XX
+#define OMAP_MDR1_DISABLE 0x07
+#define OMAP_MDR1_MODE13X 0x03
+#define OMAP_MDR1_MODE16X 0x00
+#define OMAP_MODE13X_SPEED 230400
+#endif
+
+#define CONSOLE_NAME console=
+
+#define UART_CLK (4800)
+#define QUART_CLK (1843200)
+
+#define QUART (0x3)
+
+#define SLEEP_TIMEOUT (5 * HZ)
+#define RX_TIMEOUT (3 * HZ)
+
+struct uart_dma_info {
+ int dma_enabled;
+ int rx_dma_bufsize;
+ int rx_timeout;
+ };
+
+struct omap_uart_state {
+ int clocked;
+ struct clk *ick;
+ struct clk *fck;
+ int num;
+ int can_sleep;
+
+ void __iomem *wk_st;
+ void __iomem *wk_en;
+ u32 wk_mask;
+ u32 padconf;
+
+#ifdef CONFIG_PM
+ struct timer_list timer;
+ u32 timeout;
+ int context_valid;
+ /* Registers to be saved/restored for OFF-mode */
+ u16 dll;
+ u16 dlh;
+ u16 ier;
+ u16 sysc;
+ u16 scr;
+ u16 wer;
+#endif
+};
+
+struct uart_omap_dma {
+ u8 uart_dma_tx;
+ u8 uart_dma_rx;
+ int rx_dma_channel;
+ int tx_dma_channel;
+ /* Physical adress of RX DMA buffer */
+ dma_addr_t rx_buf_dma_phys;
+ /* Physical adress of TX DMA buffer */
+ dma_addr_t tx_buf_dma_phys;
+ /*
+* Buffer for rx dma.It is not required for tx because the buffer
+* comes from port structure
+*/
+ unsigned intuart_base;
+ unsigned char *rx_buf;
+ unsigned intprev_rx_dma_pos;
+ int tx_buf_size;
+ int tx_dma_state;
+ int rx_dma_state;
+ spinlock_t tx_lock;
+ spinlock_t rx_lock;
+ /* timer to poll activity on rx dma */
+ struct timer_list rx_timer;
+ int rx_buf_size;
+ int rx_timeout;
+};
+
+struct uart_omap_port {
+ struct uart_portport;
+ struct uart_omap_dmauart_dma;
+ struct platform_device *pdev;
+
+ unsigned char ier;
+ unsigned char lcr;
+ unsigned char mcr;
+ unsigned char fcr;
+ unsigned char efr;
+
+ int use_dma;
+ int is_buf_dma_alloced;
+ /*
+* Some bits in registers are cleared on a read, so they must
+* be saved whenever the register is read but the bits will not
+* be immediately processed.
+*/
+ unsigned intlsr_break_flag;
+#define MSR_SAVE_FLAGS UART_MSR_ANY_DELTA
+ unsigned char msr_saved_flags;
+ charname[20];
+
