diff options
Diffstat (limited to 'drivers/pcmcia/at91_cf.c')
-rw-r--r-- | drivers/pcmcia/at91_cf.c | 73 |
1 files changed, 25 insertions, 48 deletions
diff --git a/drivers/pcmcia/at91_cf.c b/drivers/pcmcia/at91_cf.c index 3bcb7dc3299..3334f22a86c 100644 --- a/drivers/pcmcia/at91_cf.c +++ b/drivers/pcmcia/at91_cf.c @@ -23,19 +23,20 @@ #include <asm/io.h> #include <asm/sizes.h> -#include <asm/arch/at91rm9200.h> #include <asm/arch/board.h> #include <asm/arch/gpio.h> +#include <asm/arch/at91rm9200_mc.h> /* * A0..A10 work in each range; A23 indicates I/O space; A25 is CFRNW; * some other bit in {A24,A22..A11} is nREG to flag memory access * (vs attributes). So more than 2KB/region would just be waste. + * Note: These are offsets from the physical base address. */ -#define CF_ATTR_PHYS (AT91_CF_BASE) -#define CF_IO_PHYS (AT91_CF_BASE + (1 << 23)) -#define CF_MEM_PHYS (AT91_CF_BASE + 0x017ff800) +#define CF_ATTR_PHYS (0) +#define CF_IO_PHYS (1 << 23) +#define CF_MEM_PHYS (0x017ff800) /*--------------------------------------------------------------------------*/ @@ -48,6 +49,8 @@ struct at91_cf_socket { struct platform_device *pdev; struct at91_cf_data *board; + + unsigned long phys_baseaddr; }; #define SZ_2K (2 * SZ_1K) @@ -154,9 +157,8 @@ static int at91_cf_set_io_map(struct pcmcia_socket *s, struct pccard_io_map *io) /* * Use 16 bit accesses unless/until we need 8-bit i/o space. - * Always set CSR4 ... PCMCIA won't always unmap things. */ - csr = at91_sys_read(AT91_SMC_CSR(4)) & ~AT91_SMC_DBW; + csr = at91_sys_read(AT91_SMC_CSR(cf->board->chipselect)) & ~AT91_SMC_DBW; /* * NOTE: this CF controller ignores IOIS16, so we can't really do @@ -168,14 +170,14 @@ static int at91_cf_set_io_map(struct pcmcia_socket *s, struct pccard_io_map *io) * some cards only like that way to get at the odd byte, despite * CF 3.0 spec table 35 also giving the D8-D15 option. */ - if (!(io->flags & (MAP_16BIT|MAP_AUTOSZ))) { + if (!(io->flags & (MAP_16BIT | MAP_AUTOSZ))) { csr |= AT91_SMC_DBW_8; pr_debug("%s: 8bit i/o bus\n", driver_name); } else { csr |= AT91_SMC_DBW_16; pr_debug("%s: 16bit i/o bus\n", driver_name); } - at91_sys_write(AT91_SMC_CSR(4), csr); + at91_sys_write(AT91_SMC_CSR(cf->board->chipselect), csr); io->start = cf->socket.io_offset; io->stop = io->start + SZ_2K - 1; @@ -194,11 +196,11 @@ at91_cf_set_mem_map(struct pcmcia_socket *s, struct pccard_mem_map *map) cf = container_of(s, struct at91_cf_socket, socket); - map->flags &= MAP_ACTIVE|MAP_ATTRIB|MAP_16BIT; + map->flags &= (MAP_ACTIVE | MAP_ATTRIB | MAP_16BIT); if (map->flags & MAP_ATTRIB) - map->static_start = CF_ATTR_PHYS; + map->static_start = cf->phys_baseaddr + CF_ATTR_PHYS; else - map->static_start = CF_MEM_PHYS; + map->static_start = cf->phys_baseaddr + CF_MEM_PHYS; return 0; } @@ -219,7 +221,6 @@ static int __init at91_cf_probe(struct platform_device *pdev) struct at91_cf_socket *cf; struct at91_cf_data *board = pdev->dev.platform_data; struct resource *io; - unsigned int csa; int status; if (!board || !board->det_pin || !board->rst_pin) @@ -229,39 +230,17 @@ static int __init at91_cf_probe(struct platform_device *pdev) if (!io) return -ENODEV; - cf = kcalloc(1, sizeof *cf, GFP_KERNEL); + cf = kzalloc(sizeof *cf, GFP_KERNEL); if (!cf) return -ENOMEM; cf->board = board; cf->pdev = pdev; + cf->phys_baseaddr = io->start; platform_set_drvdata(pdev, cf); - /* CF takes over CS4, CS5, CS6 */ - csa = at91_sys_read(AT91_EBI_CSA); - at91_sys_write(AT91_EBI_CSA, csa | AT91_EBI_CS4A_SMC_COMPACTFLASH); - - /* nWAIT is _not_ a default setting */ - (void) at91_set_A_periph(AT91_PIN_PC6, 1); /* nWAIT */ - - /* - * Static memory controller timing adjustments. - * REVISIT: these timings are in terms of MCK cycles, so - * when MCK changes (cpufreq etc) so must these values... - */ - at91_sys_write(AT91_SMC_CSR(4), - AT91_SMC_ACSS_STD - | AT91_SMC_DBW_16 - | AT91_SMC_BAT - | AT91_SMC_WSEN - | AT91_SMC_NWS_(32) /* wait states */ - | AT91_SMC_RWSETUP_(6) /* setup time */ - | AT91_SMC_RWHOLD_(4) /* hold time */ - ); - /* must be a GPIO; ergo must trigger on both edges */ - status = request_irq(board->det_pin, at91_cf_irq, - IRQF_SAMPLE_RANDOM, driver_name, cf); + status = request_irq(board->det_pin, at91_cf_irq, 0, driver_name, cf); if (status < 0) goto fail0; device_init_wakeup(&pdev->dev, 1); @@ -282,14 +261,18 @@ static int __init at91_cf_probe(struct platform_device *pdev) cf->socket.pci_irq = NR_IRQS + 1; /* pcmcia layer only remaps "real" memory not iospace */ - cf->socket.io_offset = (unsigned long) ioremap(CF_IO_PHYS, SZ_2K); - if (!cf->socket.io_offset) + cf->socket.io_offset = (unsigned long) ioremap(cf->phys_baseaddr + CF_IO_PHYS, SZ_2K); + if (!cf->socket.io_offset) { + status = -ENXIO; goto fail1; + } - /* reserve CS4, CS5, and CS6 regions; but use just CS4 */ + /* reserve chip-select regions */ if (!request_mem_region(io->start, io->end + 1 - io->start, - driver_name)) + driver_name)) { + status = -ENXIO; goto fail1; + } pr_info("%s: irqs det #%d, io #%d\n", driver_name, board->det_pin, board->irq_pin); @@ -319,9 +302,7 @@ fail1: fail0a: device_init_wakeup(&pdev->dev, 0); free_irq(board->det_pin, cf); - device_init_wakeup(&pdev->dev, 0); fail0: - at91_sys_write(AT91_EBI_CSA, csa); kfree(cf); return status; } @@ -331,19 +312,15 @@ static int __exit at91_cf_remove(struct platform_device *pdev) struct at91_cf_socket *cf = platform_get_drvdata(pdev); struct at91_cf_data *board = cf->board; struct resource *io = cf->socket.io[0].res; - unsigned int csa; pcmcia_unregister_socket(&cf->socket); if (board->irq_pin) free_irq(board->irq_pin, cf); - free_irq(board->det_pin, cf); device_init_wakeup(&pdev->dev, 0); + free_irq(board->det_pin, cf); iounmap((void __iomem *) cf->socket.io_offset); release_mem_region(io->start, io->end + 1 - io->start); - csa = at91_sys_read(AT91_EBI_CSA); - at91_sys_write(AT91_EBI_CSA, csa & ~AT91_EBI_CS4A); - kfree(cf); return 0; } |