The platform_device_id is not modified by the driver and core uses it as
const.
Signed-off-by: Krzysztof Kozlowski <k.kozlowski.k@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
The platform_device_id is not modified by the driver and core uses it as
const.
Signed-off-by: Krzysztof Kozlowski <k.kozlowski.k@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
The code it refers to was removed in commit b545e4f406 ("serial:
sh-sci: Compute overrun_bit without using baud rate algo").
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
error_mask is the union of all error indicating bits in the SCxSR
register, while overrun_mask may apply to a different register (SCLSR),
depending on the SCI variant.
Hence overrun_mask should only be ORed into error_mask if it applies to
the SCxSR register.
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
The various SCI implementations use 3 different methods to signal
overrun errors:
- Bit SCI_ORER in register SCxSR on SCI,
- Bit SCIFA_ORER in register SCxSR on SCIFA and SCIFB, and SCIF on
SH7705/SH7720/SH7721,
- Bit SCLSR_ORER in (optional!) register SCLSR on (H)SCIF.
However:
1. sci_handle_fifo_overrun()
a. handles (H)SCIF and SCIFA/SCIFB only,
b. treats SCIF on SH7705/SH7720/SH7721 incorrectly,
2. sci_mpxed_interrupt()
a. treats SCIF on SH7705/SH7720/SH7721 incorrectly,
b. ignores that not all SCIFs have the SCLSR register, causing
"Invalid register access" WARN()ings.
To fix the above:
1. Determine and store the correct register enum during
initialization,
2. Replace the duplicated buggy switch statements by using the stored
register enum,
3. Add the missing existence check to sci_mpxed_interrupt().
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Add the missing overrun bit definition for (H)SCIF.
Replace overrun_bit by overrun_mask, so we can use the existing
defines instead of hardcoded values.
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Add the missing overrun error bit in SCxSR on SCIFA/SCIFB and SCIF on
SH7705/SH7720/SH7721.
Document what the corresponding bit(s) on plain SCIF are used for.
Sort the components of SCIF_DEFAULT_ERROR_MASK by reverse definition
order.
Replace the hardcoded values in the SCxSR_*_CLEAR macros by proper
defines. Use bit masks (negations of sets of bits) to make it more
obvious which bits are being cleared.
Assembler output (on sh) was compared before and after this commit:
- For the first branch of the big "#if defined(...) || ..." construct,
the code has changed slightly, as 32-bit bitmasks can be loaded in a
single instruction, unlike the old large 16-bit constants (the SCxSR
register is 16 bit, so we don't care about the top 16 bits),
- For the second branch, the generated code is identical.
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Add the register definitions for the Serial Port Control and Data
Registers on SCIFA/SCIFB, which are needed for RTS/CTS pin control.
Extracted from patches by Magnus Damm <damm+renesas@opensource.se>.
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Move private register definitions and enums from the public
<linux/serial_sci.h> header file to the driver private "sh-sci.h" header
file.
The common Serial Control Register definitions are left in the public
header file, as they're needed to fill in plat_sci_port.scscr on legacy
systems not using DT.
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
We should not be doing assignments within an if () block
so fix up the code to not do this.
change was created using Coccinelle.
CC: Jiri Slaby <jslaby@suse.cz>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
We should not be doing assignments within an if () block
so fix up the code to not do this.
change was created using Coccinelle.
CC: Jiri Slaby <jslaby@suse.cz>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
We should not be doing assignments within an if () block
so fix up the code to not do this.
change was created using Coccinelle.
CC: Jiri Slaby <jslaby@suse.cz>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
We should not be doing assignments within an if () block
so fix up the code to not do this.
change was created using Coccinelle.
CC: Jiri Slaby <jslaby@suse.cz>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
We should not be doing assignments within an if () block
so fix up the code to not do this.
change was created using Coccinelle.
CC: Jiri Slaby <jslaby@suse.cz>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
We should not be doing assignments within an if () block
so fix up the code to not do this.
change was created using Coccinelle.
CC: Jiri Slaby <jslaby@suse.cz>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
We should not be doing assignments within an if () block
so fix up the code to not do this.
change was created using Coccinelle.
CC: Pat Gefre <pfg@sgi.com>
CC: Jiri Slaby <jslaby@suse.cz>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
We should not be doing assignments within an if () block
so fix up the code to not do this.
change was created using Coccinelle.
CC: Pat Gefre <pfg@sgi.com>
CC: Jiri Slaby <jslaby@suse.cz>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
We should not be doing assignments within an if () block
so fix up the code to not do this.
change was created using Coccinelle.
CC: Jiri Slaby <jslaby@suse.cz>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
We should not be doing assignments within an if () block
so fix up the code to not do this.
change was created using Coccinelle.
CC: Jiri Slaby <jslaby@suse.cz>
CC: Masanari Iida <standby24x7@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
We should not be doing assignments within an if () block
so fix up the code to not do this.
change was created using Coccinelle.
CC: Jiri Slaby <jslaby@suse.cz>
CC: Takashi Iwai <tiwai@suse.de>
CC: Imre Deak <imre.deak@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Krzysztof Kozlowski
Geert Uytterhoeven
Greg Kroah-Hartman