| /* |
| * Sharp SL-C7xx Series PCMCIA routines |
| * |
| * Copyright (c) 2004-2005 Richard Purdie |
| * |
| * Based on Sharp's 2.4 kernel patches and pxa2xx_mainstone.c |
| * |
| * This program is free software; you can redistribute it and/or modify |
| * it under the terms of the GNU General Public License version 2 as |
| * published by the Free Software Foundation. |
| * |
| */ |
| |
| #include <linux/module.h> |
| #include <linux/init.h> |
| #include <linux/kernel.h> |
| #include <linux/errno.h> |
| #include <linux/interrupt.h> |
| #include <linux/device.h> |
| |
| #include <asm/mach-types.h> |
| #include <asm/hardware.h> |
| #include <asm/irq.h> |
| #include <asm/hardware/scoop.h> |
| #ifdef CONFIG_SA1100_COLLIE |
| #include <asm/arch-sa1100/collie.h> |
| #else |
| #include <asm/arch-pxa/pxa-regs.h> |
| #endif |
| |
| #include "soc_common.h" |
| |
| #define NO_KEEP_VS 0x0001 |
| |
| static void sharpsl_pcmcia_init_reset(struct scoop_pcmcia_dev *scoopdev) |
| { |
| reset_scoop(scoopdev->dev); |
| scoopdev->keep_vs = NO_KEEP_VS; |
| scoopdev->keep_rd = 0; |
| } |
| |
| static int sharpsl_pcmcia_hw_init(struct soc_pcmcia_socket *skt) |
| { |
| int ret; |
| |
| #ifndef CONFIG_SA1100_COLLIE |
| /* |
| * Setup default state of GPIO outputs |
| * before we enable them as outputs. |
| */ |
| GPSR(GPIO48_nPOE) = |
| GPIO_bit(GPIO48_nPOE) | |
| GPIO_bit(GPIO49_nPWE) | |
| GPIO_bit(GPIO50_nPIOR) | |
| GPIO_bit(GPIO51_nPIOW) | |
| GPIO_bit(GPIO52_nPCE_1) | |
| GPIO_bit(GPIO53_nPCE_2); |
| |
| pxa_gpio_mode(GPIO48_nPOE_MD); |
| pxa_gpio_mode(GPIO49_nPWE_MD); |
| pxa_gpio_mode(GPIO50_nPIOR_MD); |
| pxa_gpio_mode(GPIO51_nPIOW_MD); |
| pxa_gpio_mode(GPIO52_nPCE_1_MD); |
| pxa_gpio_mode(GPIO53_nPCE_2_MD); |
| pxa_gpio_mode(GPIO54_pSKTSEL_MD); |
| pxa_gpio_mode(GPIO55_nPREG_MD); |
| pxa_gpio_mode(GPIO56_nPWAIT_MD); |
| pxa_gpio_mode(GPIO57_nIOIS16_MD); |
| #endif |
| |
| /* Register interrupts */ |
| if (scoop_devs[skt->nr].cd_irq >= 0) { |
| struct pcmcia_irqs cd_irq; |
| |
| cd_irq.sock = skt->nr; |
| cd_irq.irq = scoop_devs[skt->nr].cd_irq; |
| cd_irq.str = scoop_devs[skt->nr].cd_irq_str; |
| ret = soc_pcmcia_request_irqs(skt, &cd_irq, 1); |
| |
| if (ret) { |
| printk(KERN_ERR "Request for Compact Flash IRQ failed\n"); |
| return ret; |
| } |
| } |
| |
| skt->irq = scoop_devs[skt->nr].irq; |
| |
| return 0; |
| } |
| |
| static void sharpsl_pcmcia_hw_shutdown(struct soc_pcmcia_socket *skt) |
| { |
| if (scoop_devs[skt->nr].cd_irq >= 0) { |
| struct pcmcia_irqs cd_irq; |
| |
| cd_irq.sock = skt->nr; |
| cd_irq.irq = scoop_devs[skt->nr].cd_irq; |
| cd_irq.str = scoop_devs[skt->nr].cd_irq_str; |
| soc_pcmcia_free_irqs(skt, &cd_irq, 1); |
| } |
| } |
| |
| |
| static void sharpsl_pcmcia_socket_state(struct soc_pcmcia_socket *skt, |
| struct pcmcia_state *state) |
| { |
| unsigned short cpr, csr; |
| struct device *scoop = scoop_devs[skt->nr].dev; |
| |
| cpr = read_scoop_reg(scoop_devs[skt->nr].dev, SCOOP_CPR); |
| |
| write_scoop_reg(scoop, SCOOP_IRM, 0x00FF); |
| write_scoop_reg(scoop, SCOOP_ISR, 0x0000); |
| write_scoop_reg(scoop, SCOOP_IRM, 0x0000); |
| csr = read_scoop_reg(scoop, SCOOP_CSR); |
| if (csr & 0x0004) { |
| /* card eject */ |
| write_scoop_reg(scoop, SCOOP_CDR, 0x0000); |
| scoop_devs[skt->nr].keep_vs = NO_KEEP_VS; |
| } |
| else if (!(scoop_devs[skt->nr].keep_vs & NO_KEEP_VS)) { |
| /* keep vs1,vs2 */ |
| write_scoop_reg(scoop, SCOOP_CDR, 0x0000); |
| csr |= scoop_devs[skt->nr].keep_vs; |
| } |
| else if (cpr & 0x0003) { |
| /* power on */ |
| write_scoop_reg(scoop, SCOOP_CDR, 0x0000); |
| scoop_devs[skt->nr].keep_vs = (csr & 0x00C0); |
| } |
| else { |
| /* card detect */ |
| write_scoop_reg(scoop, SCOOP_CDR, 0x0002); |
| } |
| |
| state->detect = (csr & 0x0004) ? 0 : 1; |
| state->ready = (csr & 0x0002) ? 1 : 0; |
| state->bvd1 = (csr & 0x0010) ? 1 : 0; |
| state->bvd2 = (csr & 0x0020) ? 1 : 0; |
| state->wrprot = (csr & 0x0008) ? 1 : 0; |
| state->vs_3v = (csr & 0x0040) ? 0 : 1; |
| state->vs_Xv = (csr & 0x0080) ? 0 : 1; |
| |
| if ((cpr & 0x0080) && ((cpr & 0x8040) != 0x8040)) { |
| printk(KERN_ERR "sharpsl_pcmcia_socket_state(): CPR=%04X, Low voltage!\n", cpr); |
| } |
| |
| } |
| |
| |
| static int sharpsl_pcmcia_configure_socket(struct soc_pcmcia_socket *skt, |
| const socket_state_t *state) |
| { |
| unsigned long flags; |
| struct device *scoop = scoop_devs[skt->nr].dev; |
| |
| unsigned short cpr, ncpr, ccr, nccr, mcr, nmcr, imr, nimr; |
| |
| switch (state->Vcc) { |
| case 0: break; |
| case 33: break; |
| case 50: break; |
| default: |
| printk(KERN_ERR "sharpsl_pcmcia_configure_socket(): bad Vcc %u\n", state->Vcc); |
| return -1; |
| } |
| |
| if ((state->Vpp!=state->Vcc) && (state->Vpp!=0)) { |
| printk(KERN_ERR "CF slot cannot support Vpp %u\n", state->Vpp); |
| return -1; |
| } |
| |
| local_irq_save(flags); |
| |
| nmcr = (mcr = read_scoop_reg(scoop, SCOOP_MCR)) & ~0x0010; |
| ncpr = (cpr = read_scoop_reg(scoop, SCOOP_CPR)) & ~0x0083; |
| nccr = (ccr = read_scoop_reg(scoop, SCOOP_CCR)) & ~0x0080; |
| nimr = (imr = read_scoop_reg(scoop, SCOOP_IMR)) & ~0x003E; |
| |
| ncpr |= (state->Vcc == 33) ? 0x0001 : |
| (state->Vcc == 50) ? 0x0002 : 0; |
| nmcr |= (state->flags&SS_IOCARD) ? 0x0010 : 0; |
| ncpr |= (state->flags&SS_OUTPUT_ENA) ? 0x0080 : 0; |
| nccr |= (state->flags&SS_RESET)? 0x0080: 0; |
| nimr |= ((skt->status&SS_DETECT) ? 0x0004 : 0)| |
| ((skt->status&SS_READY) ? 0x0002 : 0)| |
| ((skt->status&SS_BATDEAD)? 0x0010 : 0)| |
| ((skt->status&SS_BATWARN)? 0x0020 : 0)| |
| ((skt->status&SS_STSCHG) ? 0x0010 : 0)| |
| ((skt->status&SS_WRPROT) ? 0x0008 : 0); |
| |
| if (!(ncpr & 0x0003)) { |
| scoop_devs[skt->nr].keep_rd = 0; |
| } else if (!scoop_devs[skt->nr].keep_rd) { |
| if (nccr & 0x0080) |
| scoop_devs[skt->nr].keep_rd = 1; |
| else |
| nccr |= 0x0080; |
| } |
| |
| if (mcr != nmcr) |
| write_scoop_reg(scoop, SCOOP_MCR, nmcr); |
| if (cpr != ncpr) |
| write_scoop_reg(scoop, SCOOP_CPR, ncpr); |
| if (ccr != nccr) |
| write_scoop_reg(scoop, SCOOP_CCR, nccr); |
| if (imr != nimr) |
| write_scoop_reg(scoop, SCOOP_IMR, nimr); |
| |
| local_irq_restore(flags); |
| |
| return 0; |
| } |
| |
| static void sharpsl_pcmcia_socket_init(struct soc_pcmcia_socket *skt) |
| { |
| sharpsl_pcmcia_init_reset(&scoop_devs[skt->nr]); |
| |
| /* Enable interrupt */ |
| write_scoop_reg(scoop_devs[skt->nr].dev, SCOOP_IMR, 0x00C0); |
| write_scoop_reg(scoop_devs[skt->nr].dev, SCOOP_MCR, 0x0101); |
| scoop_devs[skt->nr].keep_vs = NO_KEEP_VS; |
| |
| if (machine_is_collie()) |
| /* We need to disable SS_OUTPUT_ENA here. */ |
| write_scoop_reg(scoop_devs[skt->nr].dev, SCOOP_CPR, read_scoop_reg(scoop_devs[skt->nr].dev, SCOOP_CPR) & ~0x0080); |
| } |
| |
| static void sharpsl_pcmcia_socket_suspend(struct soc_pcmcia_socket *skt) |
| { |
| /* CF_BUS_OFF */ |
| sharpsl_pcmcia_init_reset(&scoop_devs[skt->nr]); |
| |
| if (machine_is_collie()) |
| /* We need to disable SS_OUTPUT_ENA here. */ |
| write_scoop_reg(scoop_devs[skt->nr].dev, SCOOP_CPR, read_scoop_reg(scoop_devs[skt->nr].dev, SCOOP_CPR) & ~0x0080); |
| } |
| |
| static struct pcmcia_low_level sharpsl_pcmcia_ops = { |
| .owner = THIS_MODULE, |
| .hw_init = sharpsl_pcmcia_hw_init, |
| .hw_shutdown = sharpsl_pcmcia_hw_shutdown, |
| .socket_state = sharpsl_pcmcia_socket_state, |
| .configure_socket = sharpsl_pcmcia_configure_socket, |
| .socket_init = sharpsl_pcmcia_socket_init, |
| .socket_suspend = sharpsl_pcmcia_socket_suspend, |
| .first = 0, |
| .nr = 0, |
| }; |
| |
| static struct platform_device *sharpsl_pcmcia_device; |
| |
| #ifdef CONFIG_SA1100_COLLIE |
| int __init pcmcia_collie_init(struct device *dev) |
| { |
| int ret = -ENODEV; |
| |
| if (machine_is_collie()) |
| ret = sa11xx_drv_pcmcia_probe(dev, &sharpsl_pcmcia_ops, 0, 1); |
| |
| return ret; |
| } |
| |
| #else |
| |
| static int __init sharpsl_pcmcia_init(void) |
| { |
| int ret; |
| |
| sharpsl_pcmcia_ops.nr=scoop_num; |
| sharpsl_pcmcia_device = kmalloc(sizeof(*sharpsl_pcmcia_device), GFP_KERNEL); |
| if (!sharpsl_pcmcia_device) |
| return -ENOMEM; |
| |
| memset(sharpsl_pcmcia_device, 0, sizeof(*sharpsl_pcmcia_device)); |
| sharpsl_pcmcia_device->name = "pxa2xx-pcmcia"; |
| sharpsl_pcmcia_device->dev.platform_data = &sharpsl_pcmcia_ops; |
| sharpsl_pcmcia_device->dev.parent=scoop_devs[0].dev; |
| |
| ret = platform_device_register(sharpsl_pcmcia_device); |
| if (ret) |
| kfree(sharpsl_pcmcia_device); |
| |
| return ret; |
| } |
| |
| static void __exit sharpsl_pcmcia_exit(void) |
| { |
| /* |
| * This call is supposed to free our sharpsl_pcmcia_device. |
| * Unfortunately platform_device don't have a free method, and |
| * we can't assume it's free of any reference at this point so we |
| * can't free it either. |
| */ |
| platform_device_unregister(sharpsl_pcmcia_device); |
| } |
| |
| fs_initcall(sharpsl_pcmcia_init); |
| module_exit(sharpsl_pcmcia_exit); |
| #endif |
| |
| MODULE_DESCRIPTION("Sharp SL Series PCMCIA Support"); |
| MODULE_LICENSE("GPL"); |