at91_cf.c revision 1fbece150a230d0ab447cfb2fc4df10fb89f0d8c
12c1f3b7a30286c16ba151fadb0abf0b20e2a1e45Andrew Victor/* 22c1f3b7a30286c16ba151fadb0abf0b20e2a1e45Andrew Victor * at91_cf.c -- AT91 CompactFlash controller driver 32c1f3b7a30286c16ba151fadb0abf0b20e2a1e45Andrew Victor * 42c1f3b7a30286c16ba151fadb0abf0b20e2a1e45Andrew Victor * Copyright (C) 2005 David Brownell 52c1f3b7a30286c16ba151fadb0abf0b20e2a1e45Andrew Victor * 62c1f3b7a30286c16ba151fadb0abf0b20e2a1e45Andrew Victor * This program is free software; you can redistribute it and/or modify 72c1f3b7a30286c16ba151fadb0abf0b20e2a1e45Andrew Victor * it under the terms of the GNU General Public License as published by 82c1f3b7a30286c16ba151fadb0abf0b20e2a1e45Andrew Victor * the Free Software Foundation; either version 2 of the License, or 92c1f3b7a30286c16ba151fadb0abf0b20e2a1e45Andrew Victor * (at your option) any later version. 102c1f3b7a30286c16ba151fadb0abf0b20e2a1e45Andrew Victor */ 112c1f3b7a30286c16ba151fadb0abf0b20e2a1e45Andrew Victor 122c1f3b7a30286c16ba151fadb0abf0b20e2a1e45Andrew Victor#include <linux/module.h> 132c1f3b7a30286c16ba151fadb0abf0b20e2a1e45Andrew Victor#include <linux/kernel.h> 142c1f3b7a30286c16ba151fadb0abf0b20e2a1e45Andrew Victor#include <linux/sched.h> 152c1f3b7a30286c16ba151fadb0abf0b20e2a1e45Andrew Victor#include <linux/platform_device.h> 162c1f3b7a30286c16ba151fadb0abf0b20e2a1e45Andrew Victor#include <linux/errno.h> 172c1f3b7a30286c16ba151fadb0abf0b20e2a1e45Andrew Victor#include <linux/init.h> 182c1f3b7a30286c16ba151fadb0abf0b20e2a1e45Andrew Victor#include <linux/interrupt.h> 192c1f3b7a30286c16ba151fadb0abf0b20e2a1e45Andrew Victor 202c1f3b7a30286c16ba151fadb0abf0b20e2a1e45Andrew Victor#include <pcmcia/ss.h> 212c1f3b7a30286c16ba151fadb0abf0b20e2a1e45Andrew Victor 222c1f3b7a30286c16ba151fadb0abf0b20e2a1e45Andrew Victor#include <asm/hardware.h> 232c1f3b7a30286c16ba151fadb0abf0b20e2a1e45Andrew Victor#include <asm/io.h> 242c1f3b7a30286c16ba151fadb0abf0b20e2a1e45Andrew Victor#include <asm/sizes.h> 252c1f3b7a30286c16ba151fadb0abf0b20e2a1e45Andrew Victor 262c1f3b7a30286c16ba151fadb0abf0b20e2a1e45Andrew Victor#include <asm/arch/at91rm9200.h> 272c1f3b7a30286c16ba151fadb0abf0b20e2a1e45Andrew Victor#include <asm/arch/board.h> 282c1f3b7a30286c16ba151fadb0abf0b20e2a1e45Andrew Victor#include <asm/arch/gpio.h> 292c1f3b7a30286c16ba151fadb0abf0b20e2a1e45Andrew Victor 302c1f3b7a30286c16ba151fadb0abf0b20e2a1e45Andrew Victor 312c1f3b7a30286c16ba151fadb0abf0b20e2a1e45Andrew Victor/* 322c1f3b7a30286c16ba151fadb0abf0b20e2a1e45Andrew Victor * A0..A10 work in each range; A23 indicates I/O space; A25 is CFRNW; 332c1f3b7a30286c16ba151fadb0abf0b20e2a1e45Andrew Victor * some other bit in {A24,A22..A11} is nREG to flag memory access 342c1f3b7a30286c16ba151fadb0abf0b20e2a1e45Andrew Victor * (vs attributes). So more than 2KB/region would just be waste. 352c1f3b7a30286c16ba151fadb0abf0b20e2a1e45Andrew Victor */ 362c1f3b7a30286c16ba151fadb0abf0b20e2a1e45Andrew Victor#define CF_ATTR_PHYS (AT91_CF_BASE) 372c1f3b7a30286c16ba151fadb0abf0b20e2a1e45Andrew Victor#define CF_IO_PHYS (AT91_CF_BASE + (1 << 23)) 382c1f3b7a30286c16ba151fadb0abf0b20e2a1e45Andrew Victor#define CF_MEM_PHYS (AT91_CF_BASE + 0x017ff800) 392c1f3b7a30286c16ba151fadb0abf0b20e2a1e45Andrew Victor 402c1f3b7a30286c16ba151fadb0abf0b20e2a1e45Andrew Victor/*--------------------------------------------------------------------------*/ 412c1f3b7a30286c16ba151fadb0abf0b20e2a1e45Andrew Victor 422c1f3b7a30286c16ba151fadb0abf0b20e2a1e45Andrew Victorstatic const char driver_name[] = "at91_cf"; 432c1f3b7a30286c16ba151fadb0abf0b20e2a1e45Andrew Victor 442c1f3b7a30286c16ba151fadb0abf0b20e2a1e45Andrew Victorstruct at91_cf_socket { 452c1f3b7a30286c16ba151fadb0abf0b20e2a1e45Andrew Victor struct pcmcia_socket socket; 462c1f3b7a30286c16ba151fadb0abf0b20e2a1e45Andrew Victor 472c1f3b7a30286c16ba151fadb0abf0b20e2a1e45Andrew Victor unsigned present:1; 482c1f3b7a30286c16ba151fadb0abf0b20e2a1e45Andrew Victor 492c1f3b7a30286c16ba151fadb0abf0b20e2a1e45Andrew Victor struct platform_device *pdev; 502c1f3b7a30286c16ba151fadb0abf0b20e2a1e45Andrew Victor struct at91_cf_data *board; 512c1f3b7a30286c16ba151fadb0abf0b20e2a1e45Andrew Victor}; 522c1f3b7a30286c16ba151fadb0abf0b20e2a1e45Andrew Victor 532c1f3b7a30286c16ba151fadb0abf0b20e2a1e45Andrew Victor#define SZ_2K (2 * SZ_1K) 542c1f3b7a30286c16ba151fadb0abf0b20e2a1e45Andrew Victor 552c1f3b7a30286c16ba151fadb0abf0b20e2a1e45Andrew Victorstatic inline int at91_cf_present(struct at91_cf_socket *cf) 562c1f3b7a30286c16ba151fadb0abf0b20e2a1e45Andrew Victor{ 572c1f3b7a30286c16ba151fadb0abf0b20e2a1e45Andrew Victor return !at91_get_gpio_value(cf->board->det_pin); 582c1f3b7a30286c16ba151fadb0abf0b20e2a1e45Andrew Victor} 592c1f3b7a30286c16ba151fadb0abf0b20e2a1e45Andrew Victor 602c1f3b7a30286c16ba151fadb0abf0b20e2a1e45Andrew Victor/*--------------------------------------------------------------------------*/ 612c1f3b7a30286c16ba151fadb0abf0b20e2a1e45Andrew Victor 622c1f3b7a30286c16ba151fadb0abf0b20e2a1e45Andrew Victorstatic int at91_cf_ss_init(struct pcmcia_socket *s) 632c1f3b7a30286c16ba151fadb0abf0b20e2a1e45Andrew Victor{ 642c1f3b7a30286c16ba151fadb0abf0b20e2a1e45Andrew Victor return 0; 652c1f3b7a30286c16ba151fadb0abf0b20e2a1e45Andrew Victor} 662c1f3b7a30286c16ba151fadb0abf0b20e2a1e45Andrew Victor 677d12e780e003f93433d49ce78cfedf4b4c52adc5David Howellsstatic irqreturn_t at91_cf_irq(int irq, void *_cf) 682c1f3b7a30286c16ba151fadb0abf0b20e2a1e45Andrew Victor{ 69c7bec5aba52392aa8d675b8722735caf4a8b7265Jeff Garzik struct at91_cf_socket *cf = _cf; 702c1f3b7a30286c16ba151fadb0abf0b20e2a1e45Andrew Victor 712c1f3b7a30286c16ba151fadb0abf0b20e2a1e45Andrew Victor if (irq == cf->board->det_pin) { 722c1f3b7a30286c16ba151fadb0abf0b20e2a1e45Andrew Victor unsigned present = at91_cf_present(cf); 732c1f3b7a30286c16ba151fadb0abf0b20e2a1e45Andrew Victor 742c1f3b7a30286c16ba151fadb0abf0b20e2a1e45Andrew Victor /* kick pccard as needed */ 752c1f3b7a30286c16ba151fadb0abf0b20e2a1e45Andrew Victor if (present != cf->present) { 762c1f3b7a30286c16ba151fadb0abf0b20e2a1e45Andrew Victor cf->present = present; 772c5362007bc0a46461a9d94958cdd53bb027004cDavid Brownell pr_debug("%s: card %s\n", driver_name, 782c5362007bc0a46461a9d94958cdd53bb027004cDavid Brownell present ? "present" : "gone"); 792c1f3b7a30286c16ba151fadb0abf0b20e2a1e45Andrew Victor pcmcia_parse_events(&cf->socket, SS_DETECT); 802c1f3b7a30286c16ba151fadb0abf0b20e2a1e45Andrew Victor } 812c1f3b7a30286c16ba151fadb0abf0b20e2a1e45Andrew Victor } 822c1f3b7a30286c16ba151fadb0abf0b20e2a1e45Andrew Victor 832c1f3b7a30286c16ba151fadb0abf0b20e2a1e45Andrew Victor return IRQ_HANDLED; 842c1f3b7a30286c16ba151fadb0abf0b20e2a1e45Andrew Victor} 852c1f3b7a30286c16ba151fadb0abf0b20e2a1e45Andrew Victor 862c1f3b7a30286c16ba151fadb0abf0b20e2a1e45Andrew Victorstatic int at91_cf_get_status(struct pcmcia_socket *s, u_int *sp) 872c1f3b7a30286c16ba151fadb0abf0b20e2a1e45Andrew Victor{ 882c1f3b7a30286c16ba151fadb0abf0b20e2a1e45Andrew Victor struct at91_cf_socket *cf; 892c1f3b7a30286c16ba151fadb0abf0b20e2a1e45Andrew Victor 902c1f3b7a30286c16ba151fadb0abf0b20e2a1e45Andrew Victor if (!sp) 912c1f3b7a30286c16ba151fadb0abf0b20e2a1e45Andrew Victor return -EINVAL; 922c1f3b7a30286c16ba151fadb0abf0b20e2a1e45Andrew Victor 932c1f3b7a30286c16ba151fadb0abf0b20e2a1e45Andrew Victor cf = container_of(s, struct at91_cf_socket, socket); 942c1f3b7a30286c16ba151fadb0abf0b20e2a1e45Andrew Victor 952c5362007bc0a46461a9d94958cdd53bb027004cDavid Brownell /* NOTE: CF is always 3VCARD */ 962c1f3b7a30286c16ba151fadb0abf0b20e2a1e45Andrew Victor if (at91_cf_present(cf)) { 972c1f3b7a30286c16ba151fadb0abf0b20e2a1e45Andrew Victor int rdy = cf->board->irq_pin; /* RDY/nIRQ */ 982c1f3b7a30286c16ba151fadb0abf0b20e2a1e45Andrew Victor int vcc = cf->board->vcc_pin; 992c1f3b7a30286c16ba151fadb0abf0b20e2a1e45Andrew Victor 1002c1f3b7a30286c16ba151fadb0abf0b20e2a1e45Andrew Victor *sp = SS_DETECT | SS_3VCARD; 1012c1f3b7a30286c16ba151fadb0abf0b20e2a1e45Andrew Victor if (!rdy || at91_get_gpio_value(rdy)) 1022c1f3b7a30286c16ba151fadb0abf0b20e2a1e45Andrew Victor *sp |= SS_READY; 1032c1f3b7a30286c16ba151fadb0abf0b20e2a1e45Andrew Victor if (!vcc || at91_get_gpio_value(vcc)) 1042c1f3b7a30286c16ba151fadb0abf0b20e2a1e45Andrew Victor *sp |= SS_POWERON; 1052c1f3b7a30286c16ba151fadb0abf0b20e2a1e45Andrew Victor } else 1062c1f3b7a30286c16ba151fadb0abf0b20e2a1e45Andrew Victor *sp = 0; 1072c1f3b7a30286c16ba151fadb0abf0b20e2a1e45Andrew Victor 1082c1f3b7a30286c16ba151fadb0abf0b20e2a1e45Andrew Victor return 0; 1092c1f3b7a30286c16ba151fadb0abf0b20e2a1e45Andrew Victor} 1102c1f3b7a30286c16ba151fadb0abf0b20e2a1e45Andrew Victor 1112c5362007bc0a46461a9d94958cdd53bb027004cDavid Brownellstatic int 1122c5362007bc0a46461a9d94958cdd53bb027004cDavid Brownellat91_cf_set_socket(struct pcmcia_socket *sock, struct socket_state_t *s) 1132c1f3b7a30286c16ba151fadb0abf0b20e2a1e45Andrew Victor{ 1142c1f3b7a30286c16ba151fadb0abf0b20e2a1e45Andrew Victor struct at91_cf_socket *cf; 1152c1f3b7a30286c16ba151fadb0abf0b20e2a1e45Andrew Victor 1162c1f3b7a30286c16ba151fadb0abf0b20e2a1e45Andrew Victor cf = container_of(sock, struct at91_cf_socket, socket); 1172c1f3b7a30286c16ba151fadb0abf0b20e2a1e45Andrew Victor 1182c1f3b7a30286c16ba151fadb0abf0b20e2a1e45Andrew Victor /* switch Vcc if needed and possible */ 1192c1f3b7a30286c16ba151fadb0abf0b20e2a1e45Andrew Victor if (cf->board->vcc_pin) { 1202c1f3b7a30286c16ba151fadb0abf0b20e2a1e45Andrew Victor switch (s->Vcc) { 1212c1f3b7a30286c16ba151fadb0abf0b20e2a1e45Andrew Victor case 0: 1222c1f3b7a30286c16ba151fadb0abf0b20e2a1e45Andrew Victor at91_set_gpio_value(cf->board->vcc_pin, 0); 1232c1f3b7a30286c16ba151fadb0abf0b20e2a1e45Andrew Victor break; 1242c1f3b7a30286c16ba151fadb0abf0b20e2a1e45Andrew Victor case 33: 1252c1f3b7a30286c16ba151fadb0abf0b20e2a1e45Andrew Victor at91_set_gpio_value(cf->board->vcc_pin, 1); 1262c1f3b7a30286c16ba151fadb0abf0b20e2a1e45Andrew Victor break; 1272c1f3b7a30286c16ba151fadb0abf0b20e2a1e45Andrew Victor default: 1282c1f3b7a30286c16ba151fadb0abf0b20e2a1e45Andrew Victor return -EINVAL; 1292c1f3b7a30286c16ba151fadb0abf0b20e2a1e45Andrew Victor } 1302c1f3b7a30286c16ba151fadb0abf0b20e2a1e45Andrew Victor } 1312c1f3b7a30286c16ba151fadb0abf0b20e2a1e45Andrew Victor 1322c1f3b7a30286c16ba151fadb0abf0b20e2a1e45Andrew Victor /* toggle reset if needed */ 1332c1f3b7a30286c16ba151fadb0abf0b20e2a1e45Andrew Victor at91_set_gpio_value(cf->board->rst_pin, s->flags & SS_RESET); 1342c1f3b7a30286c16ba151fadb0abf0b20e2a1e45Andrew Victor 1352c1f3b7a30286c16ba151fadb0abf0b20e2a1e45Andrew Victor pr_debug("%s: Vcc %d, io_irq %d, flags %04x csc %04x\n", 1362c1f3b7a30286c16ba151fadb0abf0b20e2a1e45Andrew Victor driver_name, s->Vcc, s->io_irq, s->flags, s->csc_mask); 1372c1f3b7a30286c16ba151fadb0abf0b20e2a1e45Andrew Victor 1382c1f3b7a30286c16ba151fadb0abf0b20e2a1e45Andrew Victor return 0; 1392c1f3b7a30286c16ba151fadb0abf0b20e2a1e45Andrew Victor} 1402c1f3b7a30286c16ba151fadb0abf0b20e2a1e45Andrew Victor 1412c1f3b7a30286c16ba151fadb0abf0b20e2a1e45Andrew Victorstatic int at91_cf_ss_suspend(struct pcmcia_socket *s) 1422c1f3b7a30286c16ba151fadb0abf0b20e2a1e45Andrew Victor{ 1432c1f3b7a30286c16ba151fadb0abf0b20e2a1e45Andrew Victor return at91_cf_set_socket(s, &dead_socket); 1442c1f3b7a30286c16ba151fadb0abf0b20e2a1e45Andrew Victor} 1452c1f3b7a30286c16ba151fadb0abf0b20e2a1e45Andrew Victor 1462c1f3b7a30286c16ba151fadb0abf0b20e2a1e45Andrew Victor/* we already mapped the I/O region */ 1472c1f3b7a30286c16ba151fadb0abf0b20e2a1e45Andrew Victorstatic int at91_cf_set_io_map(struct pcmcia_socket *s, struct pccard_io_map *io) 1482c1f3b7a30286c16ba151fadb0abf0b20e2a1e45Andrew Victor{ 1492c1f3b7a30286c16ba151fadb0abf0b20e2a1e45Andrew Victor struct at91_cf_socket *cf; 1502c1f3b7a30286c16ba151fadb0abf0b20e2a1e45Andrew Victor u32 csr; 1512c1f3b7a30286c16ba151fadb0abf0b20e2a1e45Andrew Victor 1522c1f3b7a30286c16ba151fadb0abf0b20e2a1e45Andrew Victor cf = container_of(s, struct at91_cf_socket, socket); 1532c1f3b7a30286c16ba151fadb0abf0b20e2a1e45Andrew Victor io->flags &= (MAP_ACTIVE | MAP_16BIT | MAP_AUTOSZ); 1542c1f3b7a30286c16ba151fadb0abf0b20e2a1e45Andrew Victor 1552c1f3b7a30286c16ba151fadb0abf0b20e2a1e45Andrew Victor /* 1562c1f3b7a30286c16ba151fadb0abf0b20e2a1e45Andrew Victor * Use 16 bit accesses unless/until we need 8-bit i/o space. 1572c1f3b7a30286c16ba151fadb0abf0b20e2a1e45Andrew Victor * Always set CSR4 ... PCMCIA won't always unmap things. 1582c1f3b7a30286c16ba151fadb0abf0b20e2a1e45Andrew Victor */ 1592c1f3b7a30286c16ba151fadb0abf0b20e2a1e45Andrew Victor csr = at91_sys_read(AT91_SMC_CSR(4)) & ~AT91_SMC_DBW; 1602c1f3b7a30286c16ba151fadb0abf0b20e2a1e45Andrew Victor 1612c1f3b7a30286c16ba151fadb0abf0b20e2a1e45Andrew Victor /* 1622c1f3b7a30286c16ba151fadb0abf0b20e2a1e45Andrew Victor * NOTE: this CF controller ignores IOIS16, so we can't really do 1632c1f3b7a30286c16ba151fadb0abf0b20e2a1e45Andrew Victor * MAP_AUTOSZ. The 16bit mode allows single byte access on either 1642c1f3b7a30286c16ba151fadb0abf0b20e2a1e45Andrew Victor * D0-D7 (even addr) or D8-D15 (odd), so it's close enough for many 1652c1f3b7a30286c16ba151fadb0abf0b20e2a1e45Andrew Victor * purposes (and handles ide-cs). 1662c1f3b7a30286c16ba151fadb0abf0b20e2a1e45Andrew Victor * 1672c1f3b7a30286c16ba151fadb0abf0b20e2a1e45Andrew Victor * The 8bit mode is needed for odd byte access on D0-D7. It seems 1682c1f3b7a30286c16ba151fadb0abf0b20e2a1e45Andrew Victor * some cards only like that way to get at the odd byte, despite 1692c1f3b7a30286c16ba151fadb0abf0b20e2a1e45Andrew Victor * CF 3.0 spec table 35 also giving the D8-D15 option. 1702c1f3b7a30286c16ba151fadb0abf0b20e2a1e45Andrew Victor */ 1712c1f3b7a30286c16ba151fadb0abf0b20e2a1e45Andrew Victor if (!(io->flags & (MAP_16BIT|MAP_AUTOSZ))) { 1722c1f3b7a30286c16ba151fadb0abf0b20e2a1e45Andrew Victor csr |= AT91_SMC_DBW_8; 1732c1f3b7a30286c16ba151fadb0abf0b20e2a1e45Andrew Victor pr_debug("%s: 8bit i/o bus\n", driver_name); 1742c1f3b7a30286c16ba151fadb0abf0b20e2a1e45Andrew Victor } else { 1752c1f3b7a30286c16ba151fadb0abf0b20e2a1e45Andrew Victor csr |= AT91_SMC_DBW_16; 1762c1f3b7a30286c16ba151fadb0abf0b20e2a1e45Andrew Victor pr_debug("%s: 16bit i/o bus\n", driver_name); 1772c1f3b7a30286c16ba151fadb0abf0b20e2a1e45Andrew Victor } 1782c1f3b7a30286c16ba151fadb0abf0b20e2a1e45Andrew Victor at91_sys_write(AT91_SMC_CSR(4), csr); 1792c1f3b7a30286c16ba151fadb0abf0b20e2a1e45Andrew Victor 1802c1f3b7a30286c16ba151fadb0abf0b20e2a1e45Andrew Victor io->start = cf->socket.io_offset; 1812c1f3b7a30286c16ba151fadb0abf0b20e2a1e45Andrew Victor io->stop = io->start + SZ_2K - 1; 1822c1f3b7a30286c16ba151fadb0abf0b20e2a1e45Andrew Victor 1832c1f3b7a30286c16ba151fadb0abf0b20e2a1e45Andrew Victor return 0; 1842c1f3b7a30286c16ba151fadb0abf0b20e2a1e45Andrew Victor} 1852c1f3b7a30286c16ba151fadb0abf0b20e2a1e45Andrew Victor 1862c1f3b7a30286c16ba151fadb0abf0b20e2a1e45Andrew Victor/* pcmcia layer maps/unmaps mem regions */ 1872c5362007bc0a46461a9d94958cdd53bb027004cDavid Brownellstatic int 1882c5362007bc0a46461a9d94958cdd53bb027004cDavid Brownellat91_cf_set_mem_map(struct pcmcia_socket *s, struct pccard_mem_map *map) 1892c1f3b7a30286c16ba151fadb0abf0b20e2a1e45Andrew Victor{ 1902c1f3b7a30286c16ba151fadb0abf0b20e2a1e45Andrew Victor struct at91_cf_socket *cf; 1912c1f3b7a30286c16ba151fadb0abf0b20e2a1e45Andrew Victor 1922c1f3b7a30286c16ba151fadb0abf0b20e2a1e45Andrew Victor if (map->card_start) 1932c1f3b7a30286c16ba151fadb0abf0b20e2a1e45Andrew Victor return -EINVAL; 1942c1f3b7a30286c16ba151fadb0abf0b20e2a1e45Andrew Victor 1952c1f3b7a30286c16ba151fadb0abf0b20e2a1e45Andrew Victor cf = container_of(s, struct at91_cf_socket, socket); 1962c1f3b7a30286c16ba151fadb0abf0b20e2a1e45Andrew Victor 1972c1f3b7a30286c16ba151fadb0abf0b20e2a1e45Andrew Victor map->flags &= MAP_ACTIVE|MAP_ATTRIB|MAP_16BIT; 1982c1f3b7a30286c16ba151fadb0abf0b20e2a1e45Andrew Victor if (map->flags & MAP_ATTRIB) 1992c1f3b7a30286c16ba151fadb0abf0b20e2a1e45Andrew Victor map->static_start = CF_ATTR_PHYS; 2002c1f3b7a30286c16ba151fadb0abf0b20e2a1e45Andrew Victor else 2012c1f3b7a30286c16ba151fadb0abf0b20e2a1e45Andrew Victor map->static_start = CF_MEM_PHYS; 2022c1f3b7a30286c16ba151fadb0abf0b20e2a1e45Andrew Victor 2032c1f3b7a30286c16ba151fadb0abf0b20e2a1e45Andrew Victor return 0; 2042c1f3b7a30286c16ba151fadb0abf0b20e2a1e45Andrew Victor} 2052c1f3b7a30286c16ba151fadb0abf0b20e2a1e45Andrew Victor 2062c1f3b7a30286c16ba151fadb0abf0b20e2a1e45Andrew Victorstatic struct pccard_operations at91_cf_ops = { 2072c1f3b7a30286c16ba151fadb0abf0b20e2a1e45Andrew Victor .init = at91_cf_ss_init, 2082c1f3b7a30286c16ba151fadb0abf0b20e2a1e45Andrew Victor .suspend = at91_cf_ss_suspend, 2092c1f3b7a30286c16ba151fadb0abf0b20e2a1e45Andrew Victor .get_status = at91_cf_get_status, 2102c1f3b7a30286c16ba151fadb0abf0b20e2a1e45Andrew Victor .set_socket = at91_cf_set_socket, 2112c1f3b7a30286c16ba151fadb0abf0b20e2a1e45Andrew Victor .set_io_map = at91_cf_set_io_map, 2122c1f3b7a30286c16ba151fadb0abf0b20e2a1e45Andrew Victor .set_mem_map = at91_cf_set_mem_map, 2132c1f3b7a30286c16ba151fadb0abf0b20e2a1e45Andrew Victor}; 2142c1f3b7a30286c16ba151fadb0abf0b20e2a1e45Andrew Victor 2152c1f3b7a30286c16ba151fadb0abf0b20e2a1e45Andrew Victor/*--------------------------------------------------------------------------*/ 2162c1f3b7a30286c16ba151fadb0abf0b20e2a1e45Andrew Victor 2170db6095d4ff8918350797dfe299d572980e82fa0David Brownellstatic int __init at91_cf_probe(struct platform_device *pdev) 2182c1f3b7a30286c16ba151fadb0abf0b20e2a1e45Andrew Victor{ 2192c1f3b7a30286c16ba151fadb0abf0b20e2a1e45Andrew Victor struct at91_cf_socket *cf; 2200db6095d4ff8918350797dfe299d572980e82fa0David Brownell struct at91_cf_data *board = pdev->dev.platform_data; 2212c5362007bc0a46461a9d94958cdd53bb027004cDavid Brownell struct resource *io; 2222c1f3b7a30286c16ba151fadb0abf0b20e2a1e45Andrew Victor unsigned int csa; 2232c1f3b7a30286c16ba151fadb0abf0b20e2a1e45Andrew Victor int status; 2242c1f3b7a30286c16ba151fadb0abf0b20e2a1e45Andrew Victor 2252c1f3b7a30286c16ba151fadb0abf0b20e2a1e45Andrew Victor if (!board || !board->det_pin || !board->rst_pin) 2262c1f3b7a30286c16ba151fadb0abf0b20e2a1e45Andrew Victor return -ENODEV; 2272c1f3b7a30286c16ba151fadb0abf0b20e2a1e45Andrew Victor 2282c5362007bc0a46461a9d94958cdd53bb027004cDavid Brownell io = platform_get_resource(pdev, IORESOURCE_MEM, 0); 2292c5362007bc0a46461a9d94958cdd53bb027004cDavid Brownell if (!io) 2302c5362007bc0a46461a9d94958cdd53bb027004cDavid Brownell return -ENODEV; 2312c5362007bc0a46461a9d94958cdd53bb027004cDavid Brownell 2322c1f3b7a30286c16ba151fadb0abf0b20e2a1e45Andrew Victor cf = kcalloc(1, sizeof *cf, GFP_KERNEL); 2332c1f3b7a30286c16ba151fadb0abf0b20e2a1e45Andrew Victor if (!cf) 2342c1f3b7a30286c16ba151fadb0abf0b20e2a1e45Andrew Victor return -ENOMEM; 2352c1f3b7a30286c16ba151fadb0abf0b20e2a1e45Andrew Victor 2362c1f3b7a30286c16ba151fadb0abf0b20e2a1e45Andrew Victor cf->board = board; 2372c1f3b7a30286c16ba151fadb0abf0b20e2a1e45Andrew Victor cf->pdev = pdev; 2380db6095d4ff8918350797dfe299d572980e82fa0David Brownell platform_set_drvdata(pdev, cf); 2392c1f3b7a30286c16ba151fadb0abf0b20e2a1e45Andrew Victor 2402c1f3b7a30286c16ba151fadb0abf0b20e2a1e45Andrew Victor /* CF takes over CS4, CS5, CS6 */ 2412c1f3b7a30286c16ba151fadb0abf0b20e2a1e45Andrew Victor csa = at91_sys_read(AT91_EBI_CSA); 2422c1f3b7a30286c16ba151fadb0abf0b20e2a1e45Andrew Victor at91_sys_write(AT91_EBI_CSA, csa | AT91_EBI_CS4A_SMC_COMPACTFLASH); 2432c1f3b7a30286c16ba151fadb0abf0b20e2a1e45Andrew Victor 2442c1f3b7a30286c16ba151fadb0abf0b20e2a1e45Andrew Victor /* nWAIT is _not_ a default setting */ 2452c1f3b7a30286c16ba151fadb0abf0b20e2a1e45Andrew Victor (void) at91_set_A_periph(AT91_PIN_PC6, 1); /* nWAIT */ 2462c1f3b7a30286c16ba151fadb0abf0b20e2a1e45Andrew Victor 2472c1f3b7a30286c16ba151fadb0abf0b20e2a1e45Andrew Victor /* 2482c1f3b7a30286c16ba151fadb0abf0b20e2a1e45Andrew Victor * Static memory controller timing adjustments. 2492c1f3b7a30286c16ba151fadb0abf0b20e2a1e45Andrew Victor * REVISIT: these timings are in terms of MCK cycles, so 2502c1f3b7a30286c16ba151fadb0abf0b20e2a1e45Andrew Victor * when MCK changes (cpufreq etc) so must these values... 2512c1f3b7a30286c16ba151fadb0abf0b20e2a1e45Andrew Victor */ 2522c5362007bc0a46461a9d94958cdd53bb027004cDavid Brownell at91_sys_write(AT91_SMC_CSR(4), 2532c5362007bc0a46461a9d94958cdd53bb027004cDavid Brownell AT91_SMC_ACSS_STD 2542c5362007bc0a46461a9d94958cdd53bb027004cDavid Brownell | AT91_SMC_DBW_16 2552c5362007bc0a46461a9d94958cdd53bb027004cDavid Brownell | AT91_SMC_BAT 2562c5362007bc0a46461a9d94958cdd53bb027004cDavid Brownell | AT91_SMC_WSEN 2572c5362007bc0a46461a9d94958cdd53bb027004cDavid Brownell | AT91_SMC_NWS_(32) /* wait states */ 2582c5362007bc0a46461a9d94958cdd53bb027004cDavid Brownell | AT91_SMC_RWSETUP_(6) /* setup time */ 2592c5362007bc0a46461a9d94958cdd53bb027004cDavid Brownell | AT91_SMC_RWHOLD_(4) /* hold time */ 2602c1f3b7a30286c16ba151fadb0abf0b20e2a1e45Andrew Victor ); 2612c1f3b7a30286c16ba151fadb0abf0b20e2a1e45Andrew Victor 2622c1f3b7a30286c16ba151fadb0abf0b20e2a1e45Andrew Victor /* must be a GPIO; ergo must trigger on both edges */ 2632c1f3b7a30286c16ba151fadb0abf0b20e2a1e45Andrew Victor status = request_irq(board->det_pin, at91_cf_irq, 264dace145374b8e39aeb920304c358ab5e220341abThomas Gleixner IRQF_SAMPLE_RANDOM, driver_name, cf); 2652c1f3b7a30286c16ba151fadb0abf0b20e2a1e45Andrew Victor if (status < 0) 2662c1f3b7a30286c16ba151fadb0abf0b20e2a1e45Andrew Victor goto fail0; 2670db6095d4ff8918350797dfe299d572980e82fa0David Brownell device_init_wakeup(&pdev->dev, 1); 2682c1f3b7a30286c16ba151fadb0abf0b20e2a1e45Andrew Victor 2692c1f3b7a30286c16ba151fadb0abf0b20e2a1e45Andrew Victor /* 2702c1f3b7a30286c16ba151fadb0abf0b20e2a1e45Andrew Victor * The card driver will request this irq later as needed. 2712c1f3b7a30286c16ba151fadb0abf0b20e2a1e45Andrew Victor * but it causes lots of "irqNN: nobody cared" messages 2722c1f3b7a30286c16ba151fadb0abf0b20e2a1e45Andrew Victor * unless we report that we handle everything (sigh). 2732c1f3b7a30286c16ba151fadb0abf0b20e2a1e45Andrew Victor * (Note: DK board doesn't wire the IRQ pin...) 2742c1f3b7a30286c16ba151fadb0abf0b20e2a1e45Andrew Victor */ 2752c1f3b7a30286c16ba151fadb0abf0b20e2a1e45Andrew Victor if (board->irq_pin) { 2762c1f3b7a30286c16ba151fadb0abf0b20e2a1e45Andrew Victor status = request_irq(board->irq_pin, at91_cf_irq, 277dace145374b8e39aeb920304c358ab5e220341abThomas Gleixner IRQF_SHARED, driver_name, cf); 2782c1f3b7a30286c16ba151fadb0abf0b20e2a1e45Andrew Victor if (status < 0) 2792c1f3b7a30286c16ba151fadb0abf0b20e2a1e45Andrew Victor goto fail0a; 2802c1f3b7a30286c16ba151fadb0abf0b20e2a1e45Andrew Victor cf->socket.pci_irq = board->irq_pin; 2812c5362007bc0a46461a9d94958cdd53bb027004cDavid Brownell } else 2822c1f3b7a30286c16ba151fadb0abf0b20e2a1e45Andrew Victor cf->socket.pci_irq = NR_IRQS + 1; 2832c1f3b7a30286c16ba151fadb0abf0b20e2a1e45Andrew Victor 2842c1f3b7a30286c16ba151fadb0abf0b20e2a1e45Andrew Victor /* pcmcia layer only remaps "real" memory not iospace */ 2852c1f3b7a30286c16ba151fadb0abf0b20e2a1e45Andrew Victor cf->socket.io_offset = (unsigned long) ioremap(CF_IO_PHYS, SZ_2K); 2862c1f3b7a30286c16ba151fadb0abf0b20e2a1e45Andrew Victor if (!cf->socket.io_offset) 2872c1f3b7a30286c16ba151fadb0abf0b20e2a1e45Andrew Victor goto fail1; 2882c1f3b7a30286c16ba151fadb0abf0b20e2a1e45Andrew Victor 2892c1f3b7a30286c16ba151fadb0abf0b20e2a1e45Andrew Victor /* reserve CS4, CS5, and CS6 regions; but use just CS4 */ 2902c5362007bc0a46461a9d94958cdd53bb027004cDavid Brownell if (!request_mem_region(io->start, io->end + 1 - io->start, 2912c5362007bc0a46461a9d94958cdd53bb027004cDavid Brownell driver_name)) 2922c1f3b7a30286c16ba151fadb0abf0b20e2a1e45Andrew Victor goto fail1; 2932c1f3b7a30286c16ba151fadb0abf0b20e2a1e45Andrew Victor 2942c1f3b7a30286c16ba151fadb0abf0b20e2a1e45Andrew Victor pr_info("%s: irqs det #%d, io #%d\n", driver_name, 2952c1f3b7a30286c16ba151fadb0abf0b20e2a1e45Andrew Victor board->det_pin, board->irq_pin); 2962c1f3b7a30286c16ba151fadb0abf0b20e2a1e45Andrew Victor 2972c1f3b7a30286c16ba151fadb0abf0b20e2a1e45Andrew Victor cf->socket.owner = THIS_MODULE; 2980db6095d4ff8918350797dfe299d572980e82fa0David Brownell cf->socket.dev.dev = &pdev->dev; 2992c1f3b7a30286c16ba151fadb0abf0b20e2a1e45Andrew Victor cf->socket.ops = &at91_cf_ops; 3002c1f3b7a30286c16ba151fadb0abf0b20e2a1e45Andrew Victor cf->socket.resource_ops = &pccard_static_ops; 3012c1f3b7a30286c16ba151fadb0abf0b20e2a1e45Andrew Victor cf->socket.features = SS_CAP_PCCARD | SS_CAP_STATIC_MAP 3022c1f3b7a30286c16ba151fadb0abf0b20e2a1e45Andrew Victor | SS_CAP_MEM_ALIGN; 3032c1f3b7a30286c16ba151fadb0abf0b20e2a1e45Andrew Victor cf->socket.map_size = SZ_2K; 3042c5362007bc0a46461a9d94958cdd53bb027004cDavid Brownell cf->socket.io[0].res = io; 3052c1f3b7a30286c16ba151fadb0abf0b20e2a1e45Andrew Victor 3062c1f3b7a30286c16ba151fadb0abf0b20e2a1e45Andrew Victor status = pcmcia_register_socket(&cf->socket); 3072c1f3b7a30286c16ba151fadb0abf0b20e2a1e45Andrew Victor if (status < 0) 3082c1f3b7a30286c16ba151fadb0abf0b20e2a1e45Andrew Victor goto fail2; 3092c1f3b7a30286c16ba151fadb0abf0b20e2a1e45Andrew Victor 3102c1f3b7a30286c16ba151fadb0abf0b20e2a1e45Andrew Victor return 0; 3112c1f3b7a30286c16ba151fadb0abf0b20e2a1e45Andrew Victor 3122c1f3b7a30286c16ba151fadb0abf0b20e2a1e45Andrew Victorfail2: 3132c1f3b7a30286c16ba151fadb0abf0b20e2a1e45Andrew Victor iounmap((void __iomem *) cf->socket.io_offset); 3142c5362007bc0a46461a9d94958cdd53bb027004cDavid Brownell release_mem_region(io->start, io->end + 1 - io->start); 3152c1f3b7a30286c16ba151fadb0abf0b20e2a1e45Andrew Victorfail1: 3162c1f3b7a30286c16ba151fadb0abf0b20e2a1e45Andrew Victor if (board->irq_pin) 3172c1f3b7a30286c16ba151fadb0abf0b20e2a1e45Andrew Victor free_irq(board->irq_pin, cf); 3182c1f3b7a30286c16ba151fadb0abf0b20e2a1e45Andrew Victorfail0a: 3191fbece150a230d0ab447cfb2fc4df10fb89f0d8cDavid Brownell device_init_wakeup(&pdev->dev, 0); 3202c1f3b7a30286c16ba151fadb0abf0b20e2a1e45Andrew Victor free_irq(board->det_pin, cf); 3210db6095d4ff8918350797dfe299d572980e82fa0David Brownell device_init_wakeup(&pdev->dev, 0); 3222c1f3b7a30286c16ba151fadb0abf0b20e2a1e45Andrew Victorfail0: 3232c1f3b7a30286c16ba151fadb0abf0b20e2a1e45Andrew Victor at91_sys_write(AT91_EBI_CSA, csa); 3242c1f3b7a30286c16ba151fadb0abf0b20e2a1e45Andrew Victor kfree(cf); 3252c1f3b7a30286c16ba151fadb0abf0b20e2a1e45Andrew Victor return status; 3262c1f3b7a30286c16ba151fadb0abf0b20e2a1e45Andrew Victor} 3272c1f3b7a30286c16ba151fadb0abf0b20e2a1e45Andrew Victor 3280db6095d4ff8918350797dfe299d572980e82fa0David Brownellstatic int __exit at91_cf_remove(struct platform_device *pdev) 3292c1f3b7a30286c16ba151fadb0abf0b20e2a1e45Andrew Victor{ 3300db6095d4ff8918350797dfe299d572980e82fa0David Brownell struct at91_cf_socket *cf = platform_get_drvdata(pdev); 3310db6095d4ff8918350797dfe299d572980e82fa0David Brownell struct at91_cf_data *board = cf->board; 3322c5362007bc0a46461a9d94958cdd53bb027004cDavid Brownell struct resource *io = cf->socket.io[0].res; 3332c5362007bc0a46461a9d94958cdd53bb027004cDavid Brownell unsigned int csa; 3342c1f3b7a30286c16ba151fadb0abf0b20e2a1e45Andrew Victor 3352c1f3b7a30286c16ba151fadb0abf0b20e2a1e45Andrew Victor pcmcia_unregister_socket(&cf->socket); 3360db6095d4ff8918350797dfe299d572980e82fa0David Brownell if (board->irq_pin) 3370db6095d4ff8918350797dfe299d572980e82fa0David Brownell free_irq(board->irq_pin, cf); 3380db6095d4ff8918350797dfe299d572980e82fa0David Brownell free_irq(board->det_pin, cf); 3390db6095d4ff8918350797dfe299d572980e82fa0David Brownell device_init_wakeup(&pdev->dev, 0); 3402c1f3b7a30286c16ba151fadb0abf0b20e2a1e45Andrew Victor iounmap((void __iomem *) cf->socket.io_offset); 3412c5362007bc0a46461a9d94958cdd53bb027004cDavid Brownell release_mem_region(io->start, io->end + 1 - io->start); 3422c1f3b7a30286c16ba151fadb0abf0b20e2a1e45Andrew Victor 3432c1f3b7a30286c16ba151fadb0abf0b20e2a1e45Andrew Victor csa = at91_sys_read(AT91_EBI_CSA); 3442c1f3b7a30286c16ba151fadb0abf0b20e2a1e45Andrew Victor at91_sys_write(AT91_EBI_CSA, csa & ~AT91_EBI_CS4A); 3452c1f3b7a30286c16ba151fadb0abf0b20e2a1e45Andrew Victor 3462c1f3b7a30286c16ba151fadb0abf0b20e2a1e45Andrew Victor kfree(cf); 3472c1f3b7a30286c16ba151fadb0abf0b20e2a1e45Andrew Victor return 0; 3482c1f3b7a30286c16ba151fadb0abf0b20e2a1e45Andrew Victor} 3492c1f3b7a30286c16ba151fadb0abf0b20e2a1e45Andrew Victor 3500db6095d4ff8918350797dfe299d572980e82fa0David Brownell#ifdef CONFIG_PM 3510db6095d4ff8918350797dfe299d572980e82fa0David Brownell 3520db6095d4ff8918350797dfe299d572980e82fa0David Brownellstatic int at91_cf_suspend(struct platform_device *pdev, pm_message_t mesg) 3530db6095d4ff8918350797dfe299d572980e82fa0David Brownell{ 3540db6095d4ff8918350797dfe299d572980e82fa0David Brownell struct at91_cf_socket *cf = platform_get_drvdata(pdev); 3550db6095d4ff8918350797dfe299d572980e82fa0David Brownell struct at91_cf_data *board = cf->board; 3560db6095d4ff8918350797dfe299d572980e82fa0David Brownell 3570db6095d4ff8918350797dfe299d572980e82fa0David Brownell pcmcia_socket_dev_suspend(&pdev->dev, mesg); 3581fbece150a230d0ab447cfb2fc4df10fb89f0d8cDavid Brownell if (device_may_wakeup(&pdev->dev)) { 3590db6095d4ff8918350797dfe299d572980e82fa0David Brownell enable_irq_wake(board->det_pin); 3601fbece150a230d0ab447cfb2fc4df10fb89f0d8cDavid Brownell if (board->irq_pin) 3611fbece150a230d0ab447cfb2fc4df10fb89f0d8cDavid Brownell enable_irq_wake(board->irq_pin); 3621fbece150a230d0ab447cfb2fc4df10fb89f0d8cDavid Brownell } else { 3630db6095d4ff8918350797dfe299d572980e82fa0David Brownell disable_irq_wake(board->det_pin); 3641fbece150a230d0ab447cfb2fc4df10fb89f0d8cDavid Brownell if (board->irq_pin) 3651fbece150a230d0ab447cfb2fc4df10fb89f0d8cDavid Brownell disable_irq_wake(board->irq_pin); 3660db6095d4ff8918350797dfe299d572980e82fa0David Brownell } 3670db6095d4ff8918350797dfe299d572980e82fa0David Brownell return 0; 3680db6095d4ff8918350797dfe299d572980e82fa0David Brownell} 3690db6095d4ff8918350797dfe299d572980e82fa0David Brownell 3700db6095d4ff8918350797dfe299d572980e82fa0David Brownellstatic int at91_cf_resume(struct platform_device *pdev) 3710db6095d4ff8918350797dfe299d572980e82fa0David Brownell{ 3720db6095d4ff8918350797dfe299d572980e82fa0David Brownell pcmcia_socket_dev_resume(&pdev->dev); 3730db6095d4ff8918350797dfe299d572980e82fa0David Brownell return 0; 3740db6095d4ff8918350797dfe299d572980e82fa0David Brownell} 3750db6095d4ff8918350797dfe299d572980e82fa0David Brownell 3760db6095d4ff8918350797dfe299d572980e82fa0David Brownell#else 3770db6095d4ff8918350797dfe299d572980e82fa0David Brownell#define at91_cf_suspend NULL 3780db6095d4ff8918350797dfe299d572980e82fa0David Brownell#define at91_cf_resume NULL 3790db6095d4ff8918350797dfe299d572980e82fa0David Brownell#endif 3800db6095d4ff8918350797dfe299d572980e82fa0David Brownell 3810db6095d4ff8918350797dfe299d572980e82fa0David Brownellstatic struct platform_driver at91_cf_driver = { 3820db6095d4ff8918350797dfe299d572980e82fa0David Brownell .driver = { 3830db6095d4ff8918350797dfe299d572980e82fa0David Brownell .name = (char *) driver_name, 3840db6095d4ff8918350797dfe299d572980e82fa0David Brownell .owner = THIS_MODULE, 3850db6095d4ff8918350797dfe299d572980e82fa0David Brownell }, 3862c1f3b7a30286c16ba151fadb0abf0b20e2a1e45Andrew Victor .probe = at91_cf_probe, 3872c1f3b7a30286c16ba151fadb0abf0b20e2a1e45Andrew Victor .remove = __exit_p(at91_cf_remove), 3880db6095d4ff8918350797dfe299d572980e82fa0David Brownell .suspend = at91_cf_suspend, 3890db6095d4ff8918350797dfe299d572980e82fa0David Brownell .resume = at91_cf_resume, 3902c1f3b7a30286c16ba151fadb0abf0b20e2a1e45Andrew Victor}; 3912c1f3b7a30286c16ba151fadb0abf0b20e2a1e45Andrew Victor 3922c1f3b7a30286c16ba151fadb0abf0b20e2a1e45Andrew Victor/*--------------------------------------------------------------------------*/ 3932c1f3b7a30286c16ba151fadb0abf0b20e2a1e45Andrew Victor 3942c1f3b7a30286c16ba151fadb0abf0b20e2a1e45Andrew Victorstatic int __init at91_cf_init(void) 3952c1f3b7a30286c16ba151fadb0abf0b20e2a1e45Andrew Victor{ 3960db6095d4ff8918350797dfe299d572980e82fa0David Brownell return platform_driver_register(&at91_cf_driver); 3972c1f3b7a30286c16ba151fadb0abf0b20e2a1e45Andrew Victor} 3982c1f3b7a30286c16ba151fadb0abf0b20e2a1e45Andrew Victormodule_init(at91_cf_init); 3992c1f3b7a30286c16ba151fadb0abf0b20e2a1e45Andrew Victor 4002c1f3b7a30286c16ba151fadb0abf0b20e2a1e45Andrew Victorstatic void __exit at91_cf_exit(void) 4012c1f3b7a30286c16ba151fadb0abf0b20e2a1e45Andrew Victor{ 4020db6095d4ff8918350797dfe299d572980e82fa0David Brownell platform_driver_unregister(&at91_cf_driver); 4032c1f3b7a30286c16ba151fadb0abf0b20e2a1e45Andrew Victor} 4042c1f3b7a30286c16ba151fadb0abf0b20e2a1e45Andrew Victormodule_exit(at91_cf_exit); 4052c1f3b7a30286c16ba151fadb0abf0b20e2a1e45Andrew Victor 4062c1f3b7a30286c16ba151fadb0abf0b20e2a1e45Andrew VictorMODULE_DESCRIPTION("AT91 Compact Flash Driver"); 4072c1f3b7a30286c16ba151fadb0abf0b20e2a1e45Andrew VictorMODULE_AUTHOR("David Brownell"); 4082c1f3b7a30286c16ba151fadb0abf0b20e2a1e45Andrew VictorMODULE_LICENSE("GPL"); 409