serial_cs: MD55x support (PCMCIA GPRS/EDGE modem) (kernel 2.6.33)

Many PCMCIA GPRS modems like: Onda Edge N100E, Novaway PC98 (OEM SPC98Z),
Rovermate Edgus Adaptmate-039 and others have same construction and
identification:

lspcmcia -vvv
Product Name:   Generic Modem: MD55x 1.00 Serial number: xxxxx-xxx
Identification: manf_id: 0x015d card_id: 0x4c45
                function: 2 (serial)
                prod_id(1): "Generic" (0xc49e4731)
                prod_id(2): "Modem: MD55x" (0x8913b110)
                prod_id(3): "1.00" (0x83dbf271)
                prod_id(4): "Serial number: xxxxx-xxx" (0x73ee9514)

Serial connection to GSM module based on Elan VPU16551 PCMCIA UART with
datasheet recommeded 14.7456MHz crystal oscillator.

By default serial_cs set UART clock == 1843200 Hz
For correct work need set clock 14745600 Hz.
This quirk already present in driver, only need add device in quirk list.

Signed-off-by: Timur Maximov <xcom.org@gmail.com>
Acked-by: Alan Cox <alan@linux.intel.com>
Signed-off-by: Dominik Brodowski <linux@dominikbrodowski.net>

1 files changed, 9 insertions, 0 deletions

diff --git a/drivers/serial/serial_cs.c b/drivers/serial/serial_cs.c
index 175d202ab37e..8cfa5b12ea7a 100644
--- a/drivers/serial/serial_cs.c
+++ b/drivers/serial/serial_cs.c
@@ -105,6 +105,10 @@ struct serial_cfg_mem {
  * manfid 0x0160, 0x0104
  * This card appears to have a 14.7456MHz clock.
  */
+/* Generic Modem: MD55x (GPRS/EDGE) have
+ * Elan VPU16551 UART with 14.7456MHz oscillator
+ * manfid 0x015D, 0x4C45
+ */
 static void quirk_setup_brainboxes_0104(struct pcmcia_device *link, struct uart_port *port)
 {
         port->uartclk = 14745600;
@@ -196,6 +200,11 @@ static const struct serial_quirk quirks[] = {
                 .multi  = -1,
                 .setup  = quirk_setup_brainboxes_0104,
         }, {
+                .manfid = 0x015D,
+                .prodid = 0x4C45,
+                .multi  = -1,
+                .setup  = quirk_setup_brainboxes_0104,
+        }, {
                 .manfid = MANFID_IBM,
                 .prodid = ~0,
                 .multi  = -1,