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ARM: mach-shmobile: bonito: Add dip-switch selector

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devices enable/disable are controled by dip-switch on bonito board.
If bonito core board is connected to base board,
you can check the settings from FPGA.
This patch adds basic code and controls SCIFA5 settings

Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
This commit is contained in:
Kuninori Morimoto 2011-11-10 18:46:56 -08:00 committed by Paul Mundt
parent d55c9a97f8
commit b6b37e2505
1 changed files with 71 additions and 17 deletions
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88
arch/arm/mach-shmobile/board-bonito.c
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@ -55,9 +55,22 @@
* OFF NOR Not WriteProtect NAND Not WriteProtect CS0 NOR / CS2 ExtNOR * OFF NOR Not WriteProtect NAND Not WriteProtect CS0 NOR / CS2 ExtNOR
*/ */
/*
* SCIFA5 (CN42)
*
* S38.3 = ON
* S39.6 = ON
* S43.1 = ON
*/
/* /*
* FPGA * FPGA
*/ */
#define BUSSWMR1 0x0070
#define BUSSWMR2 0x0072
#define BUSSWMR3 0x0074
#define BUSSWMR4 0x0076
#define A1MDSR 0x10E0 #define A1MDSR 0x10E0
#define BVERR 0x1100 #define BVERR 0x1100
static u16 bonito_fpga_read(u32 offset) static u16 bonito_fpga_read(u32 offset)
@ -71,9 +84,15 @@ static void bonito_fpga_write(u32 offset, u16 val)
} }
/* /*
* devices * core board devices
*/ */
static struct platform_device *bonito_devices[] __initdata = { static struct platform_device *bonito_core_devices[] __initdata = {
};
/*
* base board devices
*/
static struct platform_device *bonito_base_devices[] __initdata = {
}; };
/* /*
@ -126,26 +145,18 @@ static void __init bonito_map_io(void)
/* /*
* board init * board init
*/ */
#define BIT_ON(sw, bit) (sw & (1 << bit))
#define BIT_OFF(sw, bit) (!(sw & (1 << bit)))
static void __init bonito_init(void) static void __init bonito_init(void)
{ {
u16 val; u16 val;
r8a7740_pinmux_init(); r8a7740_pinmux_init();
/* FPGA */ /*
gpio_request(GPIO_FN_CS5B, NULL); * core board settings
gpio_request(GPIO_FN_CS6A, NULL); */
gpio_request(GPIO_FN_CS5A_PORT105, NULL);
gpio_request(GPIO_FN_IRQ10, NULL);
val = bonito_fpga_read(BVERR);
pr_info("bonito version: cpu %02x, base %02x\n",
((val >> 8) & 0xFF),
((val >> 0) & 0xFF));
/* SCIFA5 */
gpio_request(GPIO_FN_SCIFA5_TXD_PORT91, NULL);
gpio_request(GPIO_FN_SCIFA5_RXD_PORT92, NULL);
#ifdef CONFIG_CACHE_L2X0 #ifdef CONFIG_CACHE_L2X0
/* Early BRESP enable, Shared attribute override enable, 32K*8way */ /* Early BRESP enable, Shared attribute override enable, 32K*8way */
@ -153,7 +164,50 @@ static void __init bonito_init(void)
#endif #endif
r8a7740_add_standard_devices(); r8a7740_add_standard_devices();
platform_add_devices(bonito_devices, ARRAY_SIZE(bonito_devices));
platform_add_devices(bonito_core_devices,
ARRAY_SIZE(bonito_core_devices));
/*
* base board settings
*/
gpio_request(GPIO_PORT176, NULL);
gpio_direction_input(GPIO_PORT176);
if (!gpio_get_value(GPIO_PORT176)) {
u16 bsw2;
u16 bsw3;
u16 bsw4;
/*
* FPGA
*/
gpio_request(GPIO_FN_CS5B, NULL);
gpio_request(GPIO_FN_CS6A, NULL);
gpio_request(GPIO_FN_CS5A_PORT105, NULL);
gpio_request(GPIO_FN_IRQ10, NULL);
val = bonito_fpga_read(BVERR);
pr_info("bonito version: cpu %02x, base %02x\n",
((val >> 8) & 0xFF),
((val >> 0) & 0xFF));
bsw2 = bonito_fpga_read(BUSSWMR2);
bsw3 = bonito_fpga_read(BUSSWMR3);
bsw4 = bonito_fpga_read(BUSSWMR4);
/*
* SCIFA5 (CN42)
*/
if (BIT_OFF(bsw2, 1) && /* S38.3 = ON */
BIT_OFF(bsw3, 9) && /* S39.6 = ON */
BIT_OFF(bsw4, 4)) { /* S43.1 = ON */
gpio_request(GPIO_FN_SCIFA5_TXD_PORT91, NULL);
gpio_request(GPIO_FN_SCIFA5_RXD_PORT92, NULL);
}
platform_add_devices(bonito_base_devices,
ARRAY_SIZE(bonito_base_devices));
}
} }
static void __init bonito_timer_init(void) static void __init bonito_timer_init(void)