Add a helper routine to register tx4938ide driver and use it on RBTX4938 board. Signed-off-by: Atsushi Nemoto <anemo@xxxxxxxxxxxxx> --- Changes since v1: * put the base address into platform_device resource. * add a comment for usage of 'tune' argument. arch/mips/include/asm/txx9/tx4938.h | 13 +++++++++ arch/mips/txx9/generic/setup_tx4938.c | 47 +++++++++++++++++++++++++++++++++ arch/mips/txx9/rbtx4938/setup.c | 1 + 3 files changed, 61 insertions(+), 0 deletions(-) diff --git a/arch/mips/include/asm/txx9/tx4938.h b/arch/mips/include/asm/txx9/tx4938.h index 989e775..3dada66 100644 --- a/arch/mips/include/asm/txx9/tx4938.h +++ b/arch/mips/include/asm/txx9/tx4938.h @@ -292,4 +292,17 @@ void tx4938_setup_pcierr_irq(void); void tx4938_irq_init(void); void tx4938_mtd_init(int ch); +struct tx4938ide_platform_info { + /* + * I/O port shift, for platforms with ports that are + * constantly spaced and need larger than the 1-byte + * spacing used by ata_std_ports(). + */ + unsigned int ioport_shift; + unsigned int gbus_clock; /* 0 means no-autotune. */ + unsigned int ebus_ch; +}; + +void tx4938_ata_init(unsigned int irq, unsigned int shift, int tune); + #endif diff --git a/arch/mips/txx9/generic/setup_tx4938.c b/arch/mips/txx9/generic/setup_tx4938.c index af724e5..e6c558e 100644 --- a/arch/mips/txx9/generic/setup_tx4938.c +++ b/arch/mips/txx9/generic/setup_tx4938.c @@ -16,6 +16,7 @@ #include <linux/param.h> #include <linux/ptrace.h> #include <linux/mtd/physmap.h> +#include <linux/platform_device.h> #include <asm/reboot.h> #include <asm/traps.h> #include <asm/txx9irq.h> @@ -335,6 +336,52 @@ void __init tx4938_mtd_init(int ch) txx9_physmap_flash_init(ch, start, size, &pdata); } +void __init tx4938_ata_init(unsigned int irq, unsigned int shift, int tune) +{ + struct platform_device *pdev; + struct resource res[] = { + { + /* .start and .end are filled in later */ + .flags = IORESOURCE_MEM, + }, { + .start = irq, + .flags = IORESOURCE_IRQ, + }, + }; + struct tx4938ide_platform_info pdata = { + .ioport_shift = shift, + /* + * The ide driver should not do autotune if other ISA + * devices existed. + */ + .gbus_clock = tune ? txx9_gbus_clock : 0, + }; + u64 ebccr; + int i; + + if ((__raw_readq(&tx4938_ccfgptr->pcfg) & + (TX4938_PCFG_ATA_SEL | TX4938_PCFG_NDF_SEL)) + != TX4938_PCFG_ATA_SEL) + return; + for (i = 0; i < 8; i++) { + /* check EBCCRn.ISA, EBCCRn.BSZ, EBCCRn.ME */ + ebccr = __raw_readq(&tx4938_ebuscptr->cr[i]); + if ((ebccr & 0x00f00008) == 0x00e00008) + break; + } + if (i == 8) + return; + pdata.ebus_ch = i; + res[0].start = ((ebccr >> 48) << 20) + 0x10000; + res[0].end = res[0].start + 0x20000 - 1; + pdev = platform_device_alloc("tx4938ide", -1); + if (!pdev || + platform_device_add_resources(pdev, res, ARRAY_SIZE(res)) || + platform_device_add_data(pdev, &pdata, sizeof(pdata)) || + platform_device_add(pdev)) + platform_device_put(pdev); +} + static void __init tx4938_stop_unused_modules(void) { __u64 pcfg, rst = 0, ckd = 0; diff --git a/arch/mips/txx9/rbtx4938/setup.c b/arch/mips/txx9/rbtx4938/setup.c index e077cc4..547ff29 100644 --- a/arch/mips/txx9/rbtx4938/setup.c +++ b/arch/mips/txx9/rbtx4938/setup.c @@ -352,6 +352,7 @@ static void __init rbtx4938_device_init(void) rbtx4938_ne_init(); tx4938_wdt_init(); rbtx4938_mtd_init(); + tx4938_ata_init(RBTX4938_IRQ_IOC_ATA, 0, 1); txx9_iocled_init(RBTX4938_LED_ADDR - IO_BASE, -1, 8, 1, "green", NULL); } -- 1.5.6.3 -- To unsubscribe from this list: send the line "unsubscribe linux-ide" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html