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authorManuel Lauss <manuel.lauss@googlemail.com>2011-11-10 16:03:26 +0400
committerRalf Baechle <ralf@linux-mips.org>2011-12-08 02:02:06 +0400
commit64cd04d0cffa3b3af0e81aa3112b71f135739e1a (patch)
tree7c66ce3a94ae3cc638a88fd2e55a86bcaf760880 /drivers/pcmcia/db1xxx_ss.c
parent809f36c6f4a0568178c909ff1096ca83eae33f7d (diff)
downloadlinux-64cd04d0cffa3b3af0e81aa3112b71f135739e1a.tar.xz
MIPS: Alchemy: Basic support for the DB1300 board.
Signed-off-by: Manuel Lauss <manuel.lauss@googlemail.com> To: linux-mips@linux-mips.org Patchwork: https://patchwork.linux-mips.org/patch/2867/ Patchwork: https://patchwork.linux-mips.org/patch/2919/ Patchwork: https://patchwork.linux-mips.org/patch/2928/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Diffstat (limited to 'drivers/pcmcia/db1xxx_ss.c')
-rw-r--r--drivers/pcmcia/db1xxx_ss.c26
1 files changed, 22 insertions, 4 deletions
diff --git a/drivers/pcmcia/db1xxx_ss.c b/drivers/pcmcia/db1xxx_ss.c
index 3e49df6d5e3b..5b7c22784aff 100644
--- a/drivers/pcmcia/db1xxx_ss.c
+++ b/drivers/pcmcia/db1xxx_ss.c
@@ -7,7 +7,7 @@
/* This is a fairly generic PCMCIA socket driver suitable for the
* following Alchemy Development boards:
- * Db1000, Db/Pb1500, Db/Pb1100, Db/Pb1550, Db/Pb1200.
+ * Db1000, Db/Pb1500, Db/Pb1100, Db/Pb1550, Db/Pb1200, Db1300
*
* The Db1000 is used as a reference: Per-socket card-, carddetect- and
* statuschange IRQs connected to SoC GPIOs, control and status register
@@ -18,6 +18,7 @@
* - Pb1100/Pb1500: single socket only; voltage key bits VS are
* at STATUS[5:4] (instead of STATUS[1:0]).
* - Au1200-based: additional card-eject irqs, irqs not gpios!
+ * - Db1300: Db1200-like, no pwr ctrl, single socket (#1).
*/
#include <linux/delay.h>
@@ -59,11 +60,17 @@ struct db1x_pcmcia_sock {
#define BOARD_TYPE_DEFAULT 0 /* most boards */
#define BOARD_TYPE_DB1200 1 /* IRQs aren't gpios */
#define BOARD_TYPE_PB1100 2 /* VS bits slightly different */
+#define BOARD_TYPE_DB1300 3 /* no power control */
int board_type;
};
#define to_db1x_socket(x) container_of(x, struct db1x_pcmcia_sock, socket)
+static int db1300_card_inserted(struct db1x_pcmcia_sock *sock)
+{
+ return bcsr_read(BCSR_SIGSTAT) & (1 << 8);
+}
+
/* DB/PB1200: check CPLD SIGSTATUS register bit 10/12 */
static int db1200_card_inserted(struct db1x_pcmcia_sock *sock)
{
@@ -84,6 +91,8 @@ static int db1x_card_inserted(struct db1x_pcmcia_sock *sock)
switch (sock->board_type) {
case BOARD_TYPE_DB1200:
return db1200_card_inserted(sock);
+ case BOARD_TYPE_DB1300:
+ return db1300_card_inserted(sock);
default:
return db1000_card_inserted(sock);
}
@@ -160,7 +169,8 @@ static int db1x_pcmcia_setup_irqs(struct db1x_pcmcia_sock *sock)
* ejection handler have been registered and the currently
* active one disabled.
*/
- if (sock->board_type == BOARD_TYPE_DB1200) {
+ if ((sock->board_type == BOARD_TYPE_DB1200) ||
+ (sock->board_type == BOARD_TYPE_DB1300)) {
ret = request_irq(sock->insert_irq, db1200_pcmcia_cdirq,
IRQF_DISABLED, "pcmcia_insert", sock);
if (ret)
@@ -174,7 +184,7 @@ static int db1x_pcmcia_setup_irqs(struct db1x_pcmcia_sock *sock)
}
/* enable the currently silent one */
- if (db1200_card_inserted(sock))
+ if (db1x_card_inserted(sock))
enable_irq(sock->eject_irq);
else
enable_irq(sock->insert_irq);
@@ -270,7 +280,8 @@ static int db1x_pcmcia_configure(struct pcmcia_socket *skt,
}
/* create new voltage code */
- cr_set |= ((v << 2) | p) << (sock->nr * 8);
+ if (sock->board_type != BOARD_TYPE_DB1300)
+ cr_set |= ((v << 2) | p) << (sock->nr * 8);
changed = state->flags ^ sock->old_flags;
@@ -343,6 +354,10 @@ static int db1x_pcmcia_get_status(struct pcmcia_socket *skt,
/* if Vcc is not zero, we have applied power to a card */
status |= GET_VCC(cr, sock->nr) ? SS_POWERON : 0;
+ /* DB1300: power always on, but don't tell when no card present */
+ if ((sock->board_type == BOARD_TYPE_DB1300) && (status & SS_DETECT))
+ status = SS_POWERON | SS_3VCARD | SS_DETECT;
+
/* reset de-asserted? then we're ready */
status |= (GET_RESET(cr, sock->nr)) ? SS_READY : SS_RESET;
@@ -419,6 +434,9 @@ static int __devinit db1x_pcmcia_socket_probe(struct platform_device *pdev)
case BCSR_WHOAMI_PB1200 ... BCSR_WHOAMI_DB1200:
sock->board_type = BOARD_TYPE_DB1200;
break;
+ case BCSR_WHOAMI_DB1300:
+ sock->board_type = BOARD_TYPE_DB1300;
+ break;
default:
printk(KERN_INFO "db1xxx-ss: unknown board %d!\n", bid);
ret = -ENODEV;