diff options
author | Dominik Brodowski <linux@dominikbrodowski.net> | 2010-07-29 14:06:42 +0200 |
---|---|---|
committer | Dominik Brodowski <linux@dominikbrodowski.net> | 2010-09-29 17:20:21 +0200 |
commit | fb49fa533f9d211994c33efb752ffa5b30033729 (patch) | |
tree | 675d26cf01c23d9623f274971a065b0dedb10f3a | |
parent | cdb138080b78146d1cdadba9f5dadbeb97445b91 (diff) | |
download | linux-fb49fa533f9d211994c33efb752ffa5b30033729.tar.bz2 |
pcmcia: split up modify_configuration() into two fixup functions
pcmcia_modify_configuration() was only used by two drivers to fix up
one issue each: setting the Vpp to a different value, and reducing
the IO width to 8 bit. Introduce two explicitly named functions
handling these things, and remove one further typedef.
CC: netdev@vger.kernel.org
CC: linux-mtd@lists.infradead.org
Tested-by: Wolfram Sang <w.sang@pengutronix.de>
Signed-off-by: Dominik Brodowski <linux@dominikbrodowski.net>
-rw-r--r-- | drivers/mtd/maps/pcmciamtd.c | 8 | ||||
-rw-r--r-- | drivers/net/pcmcia/smc91c92_cs.c | 5 | ||||
-rw-r--r-- | drivers/pcmcia/pcmcia_resource.c | 128 | ||||
-rw-r--r-- | include/pcmcia/cs.h | 13 | ||||
-rw-r--r-- | include/pcmcia/ds.h | 4 |
5 files changed, 68 insertions, 90 deletions
diff --git a/drivers/mtd/maps/pcmciamtd.c b/drivers/mtd/maps/pcmciamtd.c index fb3c5380aa84..31ce404baa3c 100644 --- a/drivers/mtd/maps/pcmciamtd.c +++ b/drivers/mtd/maps/pcmciamtd.c @@ -316,15 +316,9 @@ static void pcmciamtd_set_vpp(struct map_info *map, int on) { struct pcmciamtd_dev *dev = (struct pcmciamtd_dev *)map->map_priv_1; struct pcmcia_device *link = dev->p_dev; - modconf_t mod; - int ret; - - mod.Attributes = CONF_VPP1_CHANGE_VALID | CONF_VPP2_CHANGE_VALID; - mod.Vcc = 0; - mod.Vpp1 = mod.Vpp2 = on ? dev->vpp : 0; DEBUG(2, "dev = %p on = %d vpp = %d\n", dev, on, dev->vpp); - ret = pcmcia_modify_configuration(link, &mod); + pcmcia_fixup_vpp(link, on ? dev->vpp : 0); } diff --git a/drivers/net/pcmcia/smc91c92_cs.c b/drivers/net/pcmcia/smc91c92_cs.c index acc680739c89..395e586d7c0a 100644 --- a/drivers/net/pcmcia/smc91c92_cs.c +++ b/drivers/net/pcmcia/smc91c92_cs.c @@ -816,13 +816,10 @@ static int check_sig(struct pcmcia_device *link) } if (width) { - modconf_t mod = { - .Attributes = CONF_IO_CHANGE_WIDTH, - }; printk(KERN_INFO "smc91c92_cs: using 8-bit IO window.\n"); smc91c92_suspend(link); - pcmcia_modify_configuration(link, &mod); + pcmcia_fixup_iowidth(link); smc91c92_resume(link); return check_sig(link); } diff --git a/drivers/pcmcia/pcmcia_resource.c b/drivers/pcmcia/pcmcia_resource.c index bf16a1cf7399..14b1a951e1b6 100644 --- a/drivers/pcmcia/pcmcia_resource.c +++ b/drivers/pcmcia/pcmcia_resource.c @@ -226,92 +226,90 @@ int pcmcia_map_mem_page(struct pcmcia_device *p_dev, struct resource *res, EXPORT_SYMBOL(pcmcia_map_mem_page); -/** pcmcia_modify_configuration +/** + * pcmcia_fixup_iowidth() - reduce io width to 8bit * - * Modify a locked socket configuration + * pcmcia_fixup_iowidth() allows a PCMCIA device driver to reduce the + * IO width to 8bit after having called pcmcia_request_configuration() + * previously. */ -int pcmcia_modify_configuration(struct pcmcia_device *p_dev, - modconf_t *mod) +int pcmcia_fixup_iowidth(struct pcmcia_device *p_dev) { - struct pcmcia_socket *s; - config_t *c; - int ret; - - s = p_dev->socket; + struct pcmcia_socket *s = p_dev->socket; + pccard_io_map io_off = { 0, 0, 0, 0, 1 }; + pccard_io_map io_on; + int i, ret = 0; mutex_lock(&s->ops_mutex); - c = p_dev->function_config; - if (!(s->state & SOCKET_PRESENT)) { - dev_dbg(&p_dev->dev, "No card present\n"); - ret = -ENODEV; - goto unlock; - } - if (!(c->state & CONFIG_LOCKED)) { - dev_dbg(&p_dev->dev, "Configuration isnt't locked\n"); + dev_dbg(&p_dev->dev, "fixup iowidth to 8bit\n"); + + if (!(s->state & SOCKET_PRESENT) || + !(p_dev->function_config->state & CONFIG_LOCKED)) { + dev_dbg(&p_dev->dev, "No card? Config not locked?\n"); ret = -EACCES; goto unlock; } - if (mod->Attributes & (CONF_IRQ_CHANGE_VALID | CONF_VCC_CHANGE_VALID)) { - dev_dbg(&p_dev->dev, - "changing Vcc or IRQ is not allowed at this time\n"); - ret = -EINVAL; - goto unlock; - } + io_on.speed = io_speed; + for (i = 0; i < MAX_IO_WIN; i++) { + if (!s->io[i].res) + continue; + io_off.map = i; + io_on.map = i; - /* We only allow changing Vpp1 and Vpp2 to the same value */ - if ((mod->Attributes & CONF_VPP1_CHANGE_VALID) && - (mod->Attributes & CONF_VPP2_CHANGE_VALID)) { - if (mod->Vpp1 != mod->Vpp2) { - dev_dbg(&p_dev->dev, - "Vpp1 and Vpp2 must be the same\n"); - ret = -EINVAL; - goto unlock; - } - s->socket.Vpp = mod->Vpp1; - if (s->ops->set_socket(s, &s->socket)) { - dev_printk(KERN_WARNING, &p_dev->dev, - "Unable to set VPP\n"); - ret = -EIO; - goto unlock; - } - } else if ((mod->Attributes & CONF_VPP1_CHANGE_VALID) || - (mod->Attributes & CONF_VPP2_CHANGE_VALID)) { - dev_dbg(&p_dev->dev, - "changing Vcc is not allowed at this time\n"); - ret = -EINVAL; - goto unlock; + io_on.flags = MAP_ACTIVE | IO_DATA_PATH_WIDTH_8; + io_on.start = s->io[i].res->start; + io_on.stop = s->io[i].res->end; + + s->ops->set_io_map(s, &io_off); + mdelay(40); + s->ops->set_io_map(s, &io_on); } +unlock: + mutex_unlock(&s->ops_mutex); - if (mod->Attributes & CONF_IO_CHANGE_WIDTH) { - pccard_io_map io_off = { 0, 0, 0, 0, 1 }; - pccard_io_map io_on; - int i; + return ret; +} +EXPORT_SYMBOL(pcmcia_fixup_iowidth); - io_on.speed = io_speed; - for (i = 0; i < MAX_IO_WIN; i++) { - if (!s->io[i].res) - continue; - io_off.map = i; - io_on.map = i; - io_on.flags = MAP_ACTIVE | IO_DATA_PATH_WIDTH_8; - io_on.start = s->io[i].res->start; - io_on.stop = s->io[i].res->end; +/** + * pcmcia_fixup_vpp() - set Vpp to a new voltage level + * + * pcmcia_fixup_vpp() allows a PCMCIA device driver to set Vpp to + * a new voltage level between calls to pcmcia_request_configuration() + * and pcmcia_disable_device(). + */ +int pcmcia_fixup_vpp(struct pcmcia_device *p_dev, unsigned char new_vpp) +{ + struct pcmcia_socket *s = p_dev->socket; + int ret = 0; - s->ops->set_io_map(s, &io_off); - mdelay(40); - s->ops->set_io_map(s, &io_on); - } + mutex_lock(&s->ops_mutex); + + dev_dbg(&p_dev->dev, "fixup Vpp to %d\n", new_vpp); + + if (!(s->state & SOCKET_PRESENT) || + !(p_dev->function_config->state & CONFIG_LOCKED)) { + dev_dbg(&p_dev->dev, "No card? Config not locked?\n"); + ret = -EACCES; + goto unlock; } - ret = 0; + + s->socket.Vpp = new_vpp; + if (s->ops->set_socket(s, &s->socket)) { + dev_warn(&p_dev->dev, "Unable to set VPP\n"); + ret = -EIO; + goto unlock; + } + unlock: mutex_unlock(&s->ops_mutex); return ret; -} /* modify_configuration */ -EXPORT_SYMBOL(pcmcia_modify_configuration); +} +EXPORT_SYMBOL(pcmcia_fixup_vpp); int pcmcia_release_configuration(struct pcmcia_device *p_dev) diff --git a/include/pcmcia/cs.h b/include/pcmcia/cs.h index 63cb9bbe390e..e13d0cd3f8f7 100644 --- a/include/pcmcia/cs.h +++ b/include/pcmcia/cs.h @@ -19,19 +19,6 @@ #include <linux/interrupt.h> #endif -/* ModifyConfiguration */ -typedef struct modconf_t { - u_int Attributes; - u_int Vcc, Vpp1, Vpp2; -} modconf_t; - -/* Attributes for ModifyConfiguration */ -#define CONF_IRQ_CHANGE_VALID 0x0100 -#define CONF_VCC_CHANGE_VALID 0x0200 -#define CONF_VPP1_CHANGE_VALID 0x0400 -#define CONF_VPP2_CHANGE_VALID 0x0800 -#define CONF_IO_CHANGE_WIDTH 0x1000 - /* For RequestConfiguration */ typedef struct config_req_t { u_int Attributes; diff --git a/include/pcmcia/ds.h b/include/pcmcia/ds.h index 6f7cb38d8850..8e307b93f47b 100644 --- a/include/pcmcia/ds.h +++ b/include/pcmcia/ds.h @@ -212,7 +212,9 @@ int pcmcia_release_window(struct pcmcia_device *p_dev, struct resource *res); int pcmcia_map_mem_page(struct pcmcia_device *p_dev, struct resource *res, unsigned int offset); -int pcmcia_modify_configuration(struct pcmcia_device *p_dev, modconf_t *mod); +int pcmcia_fixup_vpp(struct pcmcia_device *p_dev, unsigned char new_vpp); +int pcmcia_fixup_iowidth(struct pcmcia_device *p_dev); + void pcmcia_disable_device(struct pcmcia_device *p_dev); /* IO ports */ |