linux/drivers/tty/serial/sh-sci.c, branch v3.14

serial: sh-sci: Add OF support

2013-12-24T12:50:54Z

Extend the driver to with support for SCIx device tree bindings. A minimal set of features is supported, additional properties can be added later should the need to describe more device features arise. Signed-off-by: Bastian Hecht Signed-off-by: Laurent Pinchart Acked-by: Simon Horman Acked-by: Greg Kroah-Hartman Signed-off-by: Simon Horman

serial: sh-sci: Remove platform data mapbase and irqs fields

2013-12-24T12:50:54Z

The fields are not used anymore by board files, remove them. Signed-off-by: Laurent Pinchart Acked-by: Greg Kroah-Hartman Signed-off-by: Simon Horman

serial: sh-sci: Remove platform data scbrr_algo_id field

2013-12-24T12:50:54Z

The field isn't set by any board, remote it. Signed-off-by: Laurent Pinchart Acked-by: Greg Kroah-Hartman Signed-off-by: Simon Horman

serial: sh-sci: Rework baud rate calculation

2013-12-24T02:17:53Z

Computing the baud rate register value requires knowledge of the hardware sampling rate. This information is currently encoded in a baud rate calculation algorithm ID passed through platform data. However, it can be derived from the port type directly in most cases. Compute the sampling rate internally in the driver if the baud rate calculation algorithm ID isn't specified, and allow platforms to override the sampling rate through platform data in special cases (this is only required for SCIFA ports on sh7723 and sh7724, the reason needs to be investigated). Signed-off-by: Laurent Pinchart Acked-by: Greg Kroah-Hartman Signed-off-by: Simon Horman

serial: sh-sci: Compute overrun_bit without using baud rate algo

2013-12-24T02:17:52Z

The overrun bit index is a property of the hardware. It's currently computed based on a different and unrelated hardware property, the baud rate calculation algorithm. Compute it using hardware identification information only. Signed-off-by: Laurent Pinchart Acked-by: Greg Kroah-Hartman Signed-off-by: Simon Horman

serial: sh-sci: Remove unused GPIO request code

2013-12-24T02:17:50Z

The driver requests at initialization time GPIOs passed through platform data. No platform makes use of this feature, remove it. Signed-off-by: Laurent Pinchart Acked-by: Greg Kroah-Hartman Signed-off-by: Simon Horman

serial: sh-sci: Move overrun_bit and error_mask fields out of pdata

2013-12-24T02:17:48Z

None of the fields is ever set by board code, and both of them are set in the driver at probe time. Move them out of struct plat_sci_port to struct sci_port. Signed-off-by: Laurent Pinchart Acked-by: Greg Kroah-Hartman Signed-off-by: Simon Horman

serial: sh-sci: Support resources passed through platform resources

2013-12-24T02:17:44Z

Memory and IRQ resources are currently passed to the driver through platform data. Support passing them through the standard platform resources mechanism instead. This deprecates platform data resources. Signed-off-by: Laurent Pinchart Acked-by: Greg Kroah-Hartman Signed-off-by: Simon Horman

serial: sh-sci: Don't check IRQ in verify port operation

2013-12-24T02:17:41Z

The IRQ number can't be modified by the user as the port is fixed. There's no need to check the new IRQ number as it will be ignored by the core. Signed-off-by: Laurent Pinchart Acked-by: Greg Kroah-Hartman Signed-off-by: Simon Horman

serial: sh-sci: Set the UPF_FIXED_PORT flag

2013-12-24T02:17:38Z

The base address, IRQ and baud rate generator parent clock rate can't be changed by userspace. Mark the port as fixed. Signed-off-by: Laurent Pinchart Acked-by: Greg Kroah-Hartman Signed-off-by: Simon Horman