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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>
This commit is contained in:
Geert Uytterhoeven 2015-11-10 16:09:23 +01:00
parent b8bbd6b292
commit bd2238fb84
1 changed files with 11 additions and 29 deletions
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40
drivers/tty/serial/sh-sci.c
View File

@ -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;