| Author | Tokens | Token Proportion | Commits | Commit Proportion |
|---|---|---|---|---|
| David Brownell | 1307 | 91.27% | 3 | 15.00% |
| Tony Lindgren | 56 | 3.91% | 3 | 15.00% |
| Kees Cook | 30 | 2.09% | 2 | 10.00% |
| Amol Lad | 19 | 1.33% | 1 | 5.00% |
| Kay Sievers | 5 | 0.35% | 1 | 5.00% |
| Vaishali Thakkar | 3 | 0.21% | 1 | 5.00% |
| Tejun Heo | 3 | 0.21% | 1 | 5.00% |
| Russell King | 2 | 0.14% | 2 | 10.00% |
| David Vrabel | 2 | 0.14% | 1 | 5.00% |
| Manuel Lauss | 1 | 0.07% | 1 | 5.00% |
| Thomas Gleixner | 1 | 0.07% | 1 | 5.00% |
| Dominik Brodowski | 1 | 0.07% | 1 | 5.00% |
| Harvey Harrison | 1 | 0.07% | 1 | 5.00% |
| Robert P. J. Day | 1 | 0.07% | 1 | 5.00% |
| Total | 1432 | 20 |
/* * omap_cf.c -- OMAP 16xx CompactFlash controller driver * * Copyright (c) 2005 David Brownell * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; either version 2 of the License, or * (at your option) any later version. */ #include <linux/module.h> #include <linux/kernel.h> #include <linux/platform_device.h> #include <linux/errno.h> #include <linux/init.h> #include <linux/delay.h> #include <linux/interrupt.h> #include <linux/slab.h> #include <pcmcia/ss.h> #include <mach/hardware.h> #include <asm/io.h> #include <asm/sizes.h> #include <mach/mux.h> #include <mach/tc.h> /* NOTE: don't expect this to support many I/O cards. The 16xx chips have * hard-wired timings to support Compact Flash memory cards; they won't work * with various other devices (like WLAN adapters) without some external * logic to help out. * * NOTE: CF controller docs disagree with address space docs as to where * CF_BASE really lives; this is a doc erratum. */ #define CF_BASE 0xfffe2800 /* status; read after IRQ */ #define CF_STATUS (CF_BASE + 0x00) # define CF_STATUS_BAD_READ (1 << 2) # define CF_STATUS_BAD_WRITE (1 << 1) # define CF_STATUS_CARD_DETECT (1 << 0) /* which chipselect (CS0..CS3) is used for CF (active low) */ #define CF_CFG (CF_BASE + 0x02) /* card reset */ #define CF_CONTROL (CF_BASE + 0x04) # define CF_CONTROL_RESET (1 << 0) #define omap_cf_present() (!(omap_readw(CF_STATUS) & CF_STATUS_CARD_DETECT)) /*--------------------------------------------------------------------------*/ static const char driver_name[] = "omap_cf"; struct omap_cf_socket { struct pcmcia_socket socket; struct timer_list timer; unsigned present:1; unsigned active:1; struct platform_device *pdev; unsigned long phys_cf; u_int irq; struct resource iomem; }; #define POLL_INTERVAL (2 * HZ) /*--------------------------------------------------------------------------*/ static int omap_cf_ss_init(struct pcmcia_socket *s) { return 0; } /* the timer is primarily to kick this socket's pccardd */ static void omap_cf_timer(struct timer_list *t) { struct omap_cf_socket *cf = from_timer(cf, t, timer); unsigned present = omap_cf_present(); if (present != cf->present) { cf->present = present; pr_debug("%s: card %s\n", driver_name, present ? "present" : "gone"); pcmcia_parse_events(&cf->socket, SS_DETECT); } if (cf->active) mod_timer(&cf->timer, jiffies + POLL_INTERVAL); } /* This irq handler prevents "irqNNN: nobody cared" messages as drivers * claim the card's IRQ. It may also detect some card insertions, but * not removals; it can't always eliminate timer irqs. */ static irqreturn_t omap_cf_irq(int irq, void *_cf) { struct omap_cf_socket *cf = (struct omap_cf_socket *)_cf; omap_cf_timer(&cf->timer); return IRQ_HANDLED; } static int omap_cf_get_status(struct pcmcia_socket *s, u_int *sp) { if (!sp) return -EINVAL; /* NOTE CF is always 3VCARD */ if (omap_cf_present()) { struct omap_cf_socket *cf; *sp = SS_READY | SS_DETECT | SS_POWERON | SS_3VCARD; cf = container_of(s, struct omap_cf_socket, socket); s->pcmcia_irq = 0; s->pci_irq = cf->irq; } else *sp = 0; return 0; } static int omap_cf_set_socket(struct pcmcia_socket *sock, struct socket_state_t *s) { u16 control; /* REVISIT some non-OSK boards may support power switching */ switch (s->Vcc) { case 0: case 33: break; default: return -EINVAL; } control = omap_readw(CF_CONTROL); if (s->flags & SS_RESET) omap_writew(CF_CONTROL_RESET, CF_CONTROL); else omap_writew(0, CF_CONTROL); pr_debug("%s: Vcc %d, io_irq %d, flags %04x csc %04x\n", driver_name, s->Vcc, s->io_irq, s->flags, s->csc_mask); return 0; } static int omap_cf_ss_suspend(struct pcmcia_socket *s) { pr_debug("%s: %s\n", driver_name, __func__); return omap_cf_set_socket(s, &dead_socket); } /* regions are 2K each: mem, attrib, io (and reserved-for-ide) */ static int omap_cf_set_io_map(struct pcmcia_socket *s, struct pccard_io_map *io) { struct omap_cf_socket *cf; cf = container_of(s, struct omap_cf_socket, socket); io->flags &= MAP_ACTIVE|MAP_ATTRIB|MAP_16BIT; io->start = cf->phys_cf + SZ_4K; io->stop = io->start + SZ_2K - 1; return 0; } static int omap_cf_set_mem_map(struct pcmcia_socket *s, struct pccard_mem_map *map) { struct omap_cf_socket *cf; if (map->card_start) return -EINVAL; cf = container_of(s, struct omap_cf_socket, socket); map->static_start = cf->phys_cf; map->flags &= MAP_ACTIVE|MAP_ATTRIB|MAP_16BIT; if (map->flags & MAP_ATTRIB) map->static_start += SZ_2K; return 0; } static struct pccard_operations omap_cf_ops = { .init = omap_cf_ss_init, .suspend = omap_cf_ss_suspend, .get_status = omap_cf_get_status, .set_socket = omap_cf_set_socket, .set_io_map = omap_cf_set_io_map, .set_mem_map = omap_cf_set_mem_map, }; /*--------------------------------------------------------------------------*/ /* * NOTE: right now the only board-specific platform_data is * "what chipselect is used". Boards could want more. */ static int __init omap_cf_probe(struct platform_device *pdev) { unsigned seg; struct omap_cf_socket *cf; int irq; int status; seg = (int) pdev->dev.platform_data; if (seg == 0 || seg > 3) return -ENODEV; /* either CFLASH.IREQ (INT_1610_CF) or some GPIO */ irq = platform_get_irq(pdev, 0); if (irq < 0) return -EINVAL; cf = kzalloc(sizeof *cf, GFP_KERNEL); if (!cf) return -ENOMEM; timer_setup(&cf->timer, omap_cf_timer, 0); cf->pdev = pdev; platform_set_drvdata(pdev, cf); /* this primarily just shuts up irq handling noise */ status = request_irq(irq, omap_cf_irq, IRQF_SHARED, driver_name, cf); if (status < 0) goto fail0; cf->irq = irq; cf->socket.pci_irq = irq; switch (seg) { /* NOTE: CS0 could be configured too ... */ case 1: cf->phys_cf = OMAP_CS1_PHYS; break; case 2: cf->phys_cf = OMAP_CS2_PHYS; break; case 3: cf->phys_cf = omap_cs3_phys(); break; default: goto fail1; } cf->iomem.start = cf->phys_cf; cf->iomem.end = cf->iomem.end + SZ_8K - 1; cf->iomem.flags = IORESOURCE_MEM; /* pcmcia layer only remaps "real" memory */ cf->socket.io_offset = (unsigned long) ioremap(cf->phys_cf + SZ_4K, SZ_2K); if (!cf->socket.io_offset) goto fail1; if (!request_mem_region(cf->phys_cf, SZ_8K, driver_name)) goto fail1; /* NOTE: CF conflicts with MMC1 */ omap_cfg_reg(W11_1610_CF_CD1); omap_cfg_reg(P11_1610_CF_CD2); omap_cfg_reg(R11_1610_CF_IOIS16); omap_cfg_reg(V10_1610_CF_IREQ); omap_cfg_reg(W10_1610_CF_RESET); omap_writew(~(1 << seg), CF_CFG); pr_info("%s: cs%d on irq %d\n", driver_name, seg, irq); /* NOTE: better EMIFS setup might support more cards; but the * TRM only shows how to affect regular flash signals, not their * CF/PCMCIA variants... */ pr_debug("%s: cs%d, previous ccs %08x acs %08x\n", driver_name, seg, omap_readl(EMIFS_CCS(seg)), omap_readl(EMIFS_ACS(seg))); omap_writel(0x0004a1b3, EMIFS_CCS(seg)); /* synch mode 4 etc */ omap_writel(0x00000000, EMIFS_ACS(seg)); /* OE hold/setup */ /* CF uses armxor_ck, which is "always" available */ pr_debug("%s: sts %04x cfg %04x control %04x %s\n", driver_name, omap_readw(CF_STATUS), omap_readw(CF_CFG), omap_readw(CF_CONTROL), omap_cf_present() ? "present" : "(not present)"); cf->socket.owner = THIS_MODULE; cf->socket.dev.parent = &pdev->dev; cf->socket.ops = &omap_cf_ops; cf->socket.resource_ops = &pccard_static_ops; cf->socket.features = SS_CAP_PCCARD | SS_CAP_STATIC_MAP | SS_CAP_MEM_ALIGN; cf->socket.map_size = SZ_2K; cf->socket.io[0].res = &cf->iomem; status = pcmcia_register_socket(&cf->socket); if (status < 0) goto fail2; cf->active = 1; mod_timer(&cf->timer, jiffies + POLL_INTERVAL); return 0; fail2: release_mem_region(cf->phys_cf, SZ_8K); fail1: if (cf->socket.io_offset) iounmap((void __iomem *) cf->socket.io_offset); free_irq(irq, cf); fail0: kfree(cf); return status; } static int __exit omap_cf_remove(struct platform_device *pdev) { struct omap_cf_socket *cf = platform_get_drvdata(pdev); cf->active = 0; pcmcia_unregister_socket(&cf->socket); del_timer_sync(&cf->timer); iounmap((void __iomem *) cf->socket.io_offset); release_mem_region(cf->phys_cf, SZ_8K); free_irq(cf->irq, cf); kfree(cf); return 0; } static struct platform_driver omap_cf_driver = { .driver = { .name = (char *) driver_name, }, .remove = __exit_p(omap_cf_remove), }; static int __init omap_cf_init(void) { if (cpu_is_omap16xx()) return platform_driver_probe(&omap_cf_driver, omap_cf_probe); return -ENODEV; } static void __exit omap_cf_exit(void) { if (cpu_is_omap16xx()) platform_driver_unregister(&omap_cf_driver); } module_init(omap_cf_init); module_exit(omap_cf_exit); MODULE_DESCRIPTION("OMAP CF Driver"); MODULE_LICENSE("GPL"); MODULE_ALIAS("platform:omap_cf");
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