From e481a528901d0cd18b5b5fcbdc55207ea3b6ef68 Mon Sep 17 00:00:00 2001 From: Magnus Damm Date: Tue, 26 Mar 2013 10:34:33 +0900 Subject: [PATCH] ARM: shmobile: r8a73a4 SCIF support V3 V3 of SCIF serial port support for the r8a73a4 SoC. This is done by adding platform devices for SCIFA0 -> SCIFA1 as well as SCIFB0 -> SCIFB3 together with clock bindings. DT device description is excluded at this point since such bindings are still under development. Signed-off-by: Magnus Damm Signed-off-by: Simon Horman --- arch/arm/mach-shmobile/clock-r8a73a4.c | 15 ++++++++- arch/arm/mach-shmobile/setup-r8a73a4.c | 43 ++++++++++++++++++++++++++ 2 files changed, 57 insertions(+), 1 deletion(-) diff --git a/arch/arm/mach-shmobile/clock-r8a73a4.c b/arch/arm/mach-shmobile/clock-r8a73a4.c index 15d479dbb13..037713bdff3 100644 --- a/arch/arm/mach-shmobile/clock-r8a73a4.c +++ b/arch/arm/mach-shmobile/clock-r8a73a4.c @@ -28,6 +28,7 @@ #define CPG_LEN 0x270 #define MPCKCR 0xe6150080 +#define SMSTPCR2 0xe6150138 static struct clk_mapping cpg_mapping = { .phys = CPG_BASE, @@ -55,11 +56,23 @@ static struct clk *main_clks[] = { &extal2_clk, }; -enum { MSTP_NR }; +enum { MSTP217, MSTP216, MSTP207, MSTP206, MSTP204, MSTP203, MSTP_NR }; static struct clk mstp_clks[MSTP_NR] = { + [MSTP204] = SH_CLK_MSTP32(&extal2_clk, SMSTPCR2, 4, 0), /* SCIFA0 */ + [MSTP203] = SH_CLK_MSTP32(&extal2_clk, SMSTPCR2, 3, 0), /* SCIFA1 */ + [MSTP206] = SH_CLK_MSTP32(&extal2_clk, SMSTPCR2, 6, 0), /* SCIFB0 */ + [MSTP207] = SH_CLK_MSTP32(&extal2_clk, SMSTPCR2, 7, 0), /* SCIFB1 */ + [MSTP216] = SH_CLK_MSTP32(&extal2_clk, SMSTPCR2, 16, 0), /* SCIFB2 */ + [MSTP217] = SH_CLK_MSTP32(&extal2_clk, SMSTPCR2, 17, 0), /* SCIFB3 */ }; 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[MSTP217]), }; void __init r8a73a4_clock_init(void) diff --git a/arch/arm/mach-shmobile/setup-r8a73a4.c b/arch/arm/mach-shmobile/setup-r8a73a4.c index 69156bce76f..746a3dc4474 100644 --- a/arch/arm/mach-shmobile/setup-r8a73a4.c +++ b/arch/arm/mach-shmobile/setup-r8a73a4.c @@ -21,13 +21,56 @@ #include #include #include +#include #include #include #include #include +#define SCIF_COMMON(scif_type, baseaddr, irq) \ + .type = scif_type, \ + .mapbase = baseaddr, \ + .flags = UPF_BOOT_AUTOCONF | UPF_IOREMAP, \ + .scbrr_algo_id = SCBRR_ALGO_4, \ + .irqs = SCIx_IRQ_MUXED(irq) + +#define SCIFA_DATA(index, baseaddr, irq) \ +[index] = { \ + SCIF_COMMON(PORT_SCIFA, baseaddr, irq), \ + .scscr = SCSCR_RE | SCSCR_TE | SCSCR_CKE0, \ +} + +#define SCIFB_DATA(index, baseaddr, irq) \ +[index] = { \ + SCIF_COMMON(PORT_SCIFB, baseaddr, irq), \ + .scscr = SCSCR_RE | SCSCR_TE, \ +} + +enum { SCIFA0, SCIFA1, SCIFB0, SCIFB1, SCIFB2, SCIFB3 }; + +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, 0xe6c50000, gic_spi(145)), /* SCIFB0 */ + SCIFB_DATA(SCIFB1, 0xe6c30000, gic_spi(149)), /* SCIFB1 */ + SCIFB_DATA(SCIFB2, 0xe6ce0000, gic_spi(150)), /* SCIFB2 */ + SCIFB_DATA(SCIFB3, 0xe6cf0000, gic_spi(151)), /* SCIFB3 */ +}; + +static inline void r8a73a4_register_scif(int idx) +{ + platform_device_register_data(&platform_bus, "sh-sci", idx, &scif[idx], + sizeof(struct plat_sci_port)); +} + void __init r8a73a4_add_standard_devices(void) { + r8a73a4_register_scif(SCIFA0); + r8a73a4_register_scif(SCIFA1); + r8a73a4_register_scif(SCIFB0); + r8a73a4_register_scif(SCIFB1); + r8a73a4_register_scif(SCIFB2); + r8a73a4_register_scif(SCIFB3); } #ifdef CONFIG_USE_OF -- 2.41.0