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[SERIAL] serial_cs: add configuration quirk
Add a quirk primerily to handle tweaks to the link->conf structure, eg as required for Socket cards. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
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7ef057fa70
commit
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1 changed files with 34 additions and 5 deletions
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@ -84,6 +84,7 @@ struct serial_quirk {
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unsigned int manfid;
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unsigned int prodid;
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int multi; /* 1 = multifunction, > 1 = # ports */
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void (*config)(struct pcmcia_device *);
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void (*wakeup)(struct pcmcia_device *);
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int (*post)(struct pcmcia_device *);
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};
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@ -164,6 +165,19 @@ static void quirk_wakeup_possio_gcc(struct pcmcia_device *link)
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outb(0xC, ctrl + 1);
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}
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/*
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* Socket Dual IO: this enables irq's for second port
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*/
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static void quirk_config_socket(struct pcmcia_device *link)
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{
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struct serial_info *info = link->priv;
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if (info->multi) {
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link->conf.Present |= PRESENT_EXT_STATUS;
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link->conf.ExtStatus = ESR_REQ_ATTN_ENA;
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}
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}
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static const struct serial_quirk quirks[] = {
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{
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.manfid = MANFID_IBM,
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@ -208,6 +222,12 @@ static const struct serial_quirk quirks[] = {
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.manfid = MANFID_SOCKET,
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.prodid = PRODID_SOCKET_DUAL_RS232,
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.multi = 2,
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.config = quirk_config_socket,
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}, {
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.manfid = MANFID_SOCKET,
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.prodid = ~0,
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.multi = -1,
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.config = quirk_config_socket,
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}
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};
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@ -504,6 +524,13 @@ static int simple_config(struct pcmcia_device *link)
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}
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if (info->multi && (info->manfid == MANFID_3COM))
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link->conf.ConfigIndex &= ~(0x08);
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/*
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* Apply any configuration quirks.
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*/
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if (info->quirk && info->quirk->config)
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info->quirk->config(link);
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i = pcmcia_request_configuration(link, &link->conf);
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if (i != CS_SUCCESS) {
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cs_error(link, RequestConfiguration, i);
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@ -592,11 +619,13 @@ static int multi_config(struct pcmcia_device * link)
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cs_error(link, RequestIRQ, i);
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link->irq.AssignedIRQ = 0;
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}
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/* Socket Dual IO: this enables irq's for second port */
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if (info->multi && (info->manfid == MANFID_SOCKET)) {
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link->conf.Present |= PRESENT_EXT_STATUS;
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link->conf.ExtStatus = ESR_REQ_ATTN_ENA;
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}
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/*
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* Apply any configuration quirks.
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*/
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if (info->quirk && info->quirk->config)
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info->quirk->config(link);
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i = pcmcia_request_configuration(link, &link->conf);
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if (i != CS_SUCCESS) {
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cs_error(link, RequestConfiguration, i);
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