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ARM: shmobile: r8a7790 SCIF support

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Add SCIF serial port support to the r8a7790 SoC by
adding platform devices for SCIFA0 -> SCIFA2 as well
as SCIFB0 -> SCIFB2 and SCIF0 -> SCIF1 together with
clock bindings. DT device description is excluded at
this point since such bindings are still under
development.

Signed-off-by: Magnus Damm <damm@opensource.se>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
This commit is contained in:
Magnus Damm 2013-03-28 00:49:44 +09:00 • committed by Simon Horman
commit 55d9fab280
2 changed files with 89 additions and 2 deletions
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36
arch/arm/mach-shmobile/clock-r8a7790.c
View file

@ -27,19 +27,51 @@
#define CPG_BASE 0xe6150000
#define CPG_LEN 0x1000
#define SMSTPCR2 0xe6150138
#define SMSTPCR7 0xe615014c
static struct clk_mapping cpg_mapping = {
.phys = CPG_BASE,
.len = CPG_LEN,
};
static struct clk *main_clks[] = {
static struct clk p_clk = {
.rate = 65000000, /* shortcut for now */
.mapping = &cpg_mapping,
};
enum { MSTP_NR };
static struct clk mp_clk = {
.rate = 52000000, /* shortcut for now */
.mapping = &cpg_mapping,
};
static struct clk *main_clks[] = {
&p_clk,
&mp_clk,
};
enum { MSTP721, MSTP720,
MSTP216, MSTP207, MSTP206, MSTP204, MSTP203, MSTP202, MSTP_NR };
static struct clk mstp_clks[MSTP_NR] = {
[MSTP721] = SH_CLK_MSTP32(&p_clk, SMSTPCR7, 21, 0), /* SCIF0 */
[MSTP720] = SH_CLK_MSTP32(&p_clk, SMSTPCR7, 20, 0), /* SCIF1 */
[MSTP216] = SH_CLK_MSTP32(&mp_clk, SMSTPCR2, 16, 0), /* SCIFB2 */
[MSTP207] = SH_CLK_MSTP32(&mp_clk, SMSTPCR2, 7, 0), /* SCIFB1 */
[MSTP206] = SH_CLK_MSTP32(&mp_clk, SMSTPCR2, 6, 0), /* SCIFB0 */
[MSTP204] = SH_CLK_MSTP32(&mp_clk, SMSTPCR2, 4, 0), /* SCIFA0 */
[MSTP203] = SH_CLK_MSTP32(&mp_clk, SMSTPCR2, 3, 0), /* SCIFA1 */
[MSTP202] = SH_CLK_MSTP32(&mp_clk, SMSTPCR2, 2, 0), /* SCIFA2 */
};
static struct clk_lookup lookups[] = {
CLKDEV_DEV_ID("sh-sci.0", &mstp_clks[MSTP204]),
CLKDEV_DEV_ID("sh-sci.1", &mstp_clks[MSTP203]),
CLKDEV_DEV_ID("sh-sci.2", &mstp_clks[MSTP206]),
CLKDEV_DEV_ID("sh-sci.3", &mstp_clks[MSTP207]),
CLKDEV_DEV_ID("sh-sci.4", &mstp_clks[MSTP216]),
CLKDEV_DEV_ID("sh-sci.5", &mstp_clks[MSTP202]),
CLKDEV_DEV_ID("sh-sci.6", &mstp_clks[MSTP721]),
CLKDEV_DEV_ID("sh-sci.7", &mstp_clks[MSTP720]),
};
void __init r8a7790_clock_init(void)

55
arch/arm/mach-shmobile/setup-r8a7790.c
View file

@ -22,13 +22,68 @@
#include <linux/irqchip.h>
#include <linux/kernel.h>
#include <linux/of_platform.h>
#include <linux/serial_sci.h>
#include <mach/common.h>
#include <mach/irqs.h>
#include <mach/r8a7790.h>
#include <asm/mach/arch.h>
#define SCIF_COMMON(scif_type, baseaddr, irq) \
.type = scif_type, \
.mapbase = baseaddr, \
.flags = UPF_BOOT_AUTOCONF | UPF_IOREMAP, \
.irqs = SCIx_IRQ_MUXED(irq)
#define SCIFA_DATA(index, baseaddr, irq) \
[index] = { \
SCIF_COMMON(PORT_SCIFA, baseaddr, irq), \
.scbrr_algo_id = SCBRR_ALGO_4, \
.scscr = SCSCR_RE | SCSCR_TE | SCSCR_CKE0, \
}
#define SCIFB_DATA(index, baseaddr, irq) \
[index] = { \
SCIF_COMMON(PORT_SCIFB, baseaddr, irq), \
.scbrr_algo_id = SCBRR_ALGO_4, \
.scscr = SCSCR_RE | SCSCR_TE, \
}
#define SCIF_DATA(index, baseaddr, irq) \
[index] = { \
SCIF_COMMON(PORT_SCIF, baseaddr, irq), \
.scbrr_algo_id = SCBRR_ALGO_2, \
.scscr = SCSCR_RE | SCSCR_TE | SCSCR_CKE1, \
}
enum { SCIFA0, SCIFA1, SCIFB0, SCIFB1, SCIFB2, SCIFA2, SCIF0, SCIF1 };
static const struct plat_sci_port scif[] = {
SCIFA_DATA(SCIFA0, 0xe6c40000, gic_spi(144)), /* SCIFA0 */
SCIFA_DATA(SCIFA1, 0xe6c50000, gic_spi(145)), /* SCIFA1 */
SCIFB_DATA(SCIFB0, 0xe6c20000, gic_spi(148)), /* SCIFB0 */
SCIFB_DATA(SCIFB1, 0xe6c30000, gic_spi(149)), /* SCIFB1 */
SCIFB_DATA(SCIFB2, 0xe6ce0000, gic_spi(150)), /* SCIFB2 */
SCIFA_DATA(SCIFA2, 0xe6c60000, gic_spi(151)), /* SCIFA2 */
SCIF_DATA(SCIF0, 0xe6e60000, gic_spi(152)), /* SCIF0 */
SCIF_DATA(SCIF1, 0xe6e68000, gic_spi(153)), /* SCIF1 */
};
static inline void r8a7790_register_scif(int idx)
{
platform_device_register_data(&platform_bus, "sh-sci", idx, &scif[idx],
sizeof(struct plat_sci_port));
}
void __init r8a7790_add_standard_devices(void)
{
r8a7790_register_scif(SCIFA0);
r8a7790_register_scif(SCIFA1);
r8a7790_register_scif(SCIFB0);
r8a7790_register_scif(SCIFB1);
r8a7790_register_scif(SCIFB2);
r8a7790_register_scif(SCIFA2);
r8a7790_register_scif(SCIF0);
r8a7790_register_scif(SCIF1);
}
#ifdef CONFIG_USE_OF