diff options
| author | Geert Uytterhoeven <geert+renesas@glider.be> | 2015-11-10 16:09:23 +0100 |
|---|---|---|
| committer | Geert Uytterhoeven <geert+renesas@glider.be> | 2015-12-17 11:18:47 +0100 |
| commit | bd2238fb84df6054d966364d07e0414b54ef8e19 (patch) | |
| tree | 46fcbb02074a0c681f2566c9e3cbaa856710ed26 | |
| parent | serial: sh-sci: Add BRG register definitions (diff) | |
| download | linux-bd2238fb84df6054d966364d07e0414b54ef8e19.tar.xz linux-bd2238fb84df6054d966364d07e0414b54ef8e19.zip | |
serial: sh-sci: Replace struct sci_port_info by type/regtype encoding
Store the encoded port and register types directly in of_device_id.data,
instead of using a pointer to a structure.
This saves memory and simplifies the source code, especially when adding
more compatible entries later.
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Reviewed-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| -rw-r--r-- | drivers/tty/serial/sh-sci.c | 40 |
1 files changed, 11 insertions, 29 deletions
diff --git a/drivers/tty/serial/sh-sci.c b/drivers/tty/serial/sh-sci.c index fb5eac2e3182..13c6abe9d842 100644 --- a/drivers/tty/serial/sh-sci.c +++ b/drivers/tty/serial/sh-sci.c @@ -2614,42 +2614,27 @@ static int sci_remove(struct platform_device *dev) return 0; } -struct sci_port_info { - unsigned int type; - unsigned int regtype; -}; + +#define SCI_OF_DATA(type, regtype) (void *)((type) << 16 | (regtype)) +#define SCI_OF_TYPE(data) ((unsigned long)(data) >> 16) +#define SCI_OF_REGTYPE(data) ((unsigned long)(data) & 0xffff) static const struct of_device_id of_sci_match[] = { { .compatible = "renesas,scif", - .data = &(const struct sci_port_info) { - .type = PORT_SCIF, - .regtype = SCIx_SH4_SCIF_REGTYPE, - }, + .data = SCI_OF_DATA(PORT_SCIF, SCIx_SH4_SCIF_REGTYPE), }, { .compatible = "renesas,scifa", - .data = &(const struct sci_port_info) { - .type = PORT_SCIFA, - .regtype = SCIx_SCIFA_REGTYPE, - }, + .data = SCI_OF_DATA(PORT_SCIFA, SCIx_SCIFA_REGTYPE), }, { .compatible = "renesas,scifb", - .data = &(const struct sci_port_info) { - .type = PORT_SCIFB, - .regtype = SCIx_SCIFB_REGTYPE, - }, + .data = SCI_OF_DATA(PORT_SCIFB, SCIx_SCIFB_REGTYPE), }, { .compatible = "renesas,hscif", - .data = &(const struct sci_port_info) { - .type = PORT_HSCIF, - .regtype = SCIx_HSCIF_REGTYPE, - }, + .data = SCI_OF_DATA(PORT_HSCIF, SCIx_HSCIF_REGTYPE), }, { .compatible = "renesas,sci", - .data = &(const struct sci_port_info) { - .type = PORT_SCI, - .regtype = SCIx_SCI_REGTYPE, - }, + .data = SCI_OF_DATA(PORT_SCI, SCIx_SCI_REGTYPE), }, { /* Terminator */ }, @@ -2661,7 +2646,6 @@ sci_parse_dt(struct platform_device *pdev, unsigned int *dev_id) { struct device_node *np = pdev->dev.of_node; const struct of_device_id *match; - const struct sci_port_info *info; struct plat_sci_port *p; int id; @@ -2672,8 +2656,6 @@ sci_parse_dt(struct platform_device *pdev, unsigned int *dev_id) if (!match) return NULL; - info = match->data; - p = devm_kzalloc(&pdev->dev, sizeof(struct plat_sci_port), GFP_KERNEL); if (!p) return NULL; @@ -2688,8 +2670,8 @@ sci_parse_dt(struct platform_device *pdev, unsigned int *dev_id) *dev_id = id; p->flags = UPF_IOREMAP | UPF_BOOT_AUTOCONF; - p->type = info->type; - p->regtype = info->regtype; + p->type = SCI_OF_TYPE(match->data); + p->regtype = SCI_OF_REGTYPE(match->data); p->scscr = SCSCR_RE | SCSCR_TE; return p; |