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    Subject[PATCH 8/12] cy82c693: add "pci_clock=" parameter
    Add "pci_clock=" parameter for specifying PCI bus clock frequency (in MHz).

    Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
    ---
    drivers/ide/pci/cy82c693.c | 7 ++++++-
    1 file changed, 6 insertions(+), 1 deletion(-)

    Index: b/drivers/ide/pci/cy82c693.c
    ===================================================================
    --- a/drivers/ide/pci/cy82c693.c
    +++ b/drivers/ide/pci/cy82c693.c
    @@ -98,6 +98,8 @@
    #define CY82C963_MIN_BUS_SPEED 25
    #define CY82C963_MAX_BUS_SPEED 33

    +static int pci_clock;
    +
    /* the struct for the PIO mode timings */
    typedef struct pio_clocks_s {
    u8 address_time; /* Address setup (clocks) */
    @@ -136,7 +138,7 @@ static int calc_clk(int time, int bus_sp
    static void compute_clocks(u8 pio, pio_clocks_t *p_pclk)
    {
    int clk1, clk2;
    - int bus_speed = system_bus_clock(); /* get speed of PCI bus */
    + int bus_speed = pci_clock ? pci_clock : system_bus_clock();

    /* we don't check against CY82C693's min and max speed,
    * so you can play with the idebus=xx parameter
    @@ -447,6 +449,9 @@ static int __init cy82c693_ide_init(void

    module_init(cy82c693_ide_init);

    +module_param(pci_clock, int, 0);
    +MODULE_PARM_DESC(pci_clock, "PCI bus clock frequency (in MHz)");
    +
    MODULE_AUTHOR("Andreas Krebs, Andre Hedrick");
    MODULE_DESCRIPTION("PCI driver module for the Cypress CY82C693 IDE");
    MODULE_LICENSE("GPL");

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