From mboxrd@z Thu Jan 1 00:00:00 1970 From: Bartlomiej Zolnierkiewicz Subject: [PATCH 8/12] cy82c693: add "pci_clock=" parameter Date: Thu, 13 Mar 2008 23:44:39 +0100 Message-ID: <20080313224439.7051.79036.sendpatchset@localhost.localdomain> References: <20080313224352.7051.44005.sendpatchset@localhost.localdomain> Return-path: Received: from fg-out-1718.google.com ([72.14.220.156]:13615 "EHLO fg-out-1718.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1758367AbYCMW36 (ORCPT ); Thu, 13 Mar 2008 18:29:58 -0400 Received: by fg-out-1718.google.com with SMTP id e21so3539470fga.17 for ; Thu, 13 Mar 2008 15:29:57 -0700 (PDT) In-Reply-To: <20080313224352.7051.44005.sendpatchset@localhost.localdomain> Sender: linux-ide-owner@vger.kernel.org List-Id: linux-ide@vger.kernel.org To: linux-ide@vger.kernel.org Cc: Bartlomiej Zolnierkiewicz , linux-kernel@vger.kernel.org Add "pci_clock=" parameter for specifying PCI bus clock frequency (in MHz). Signed-off-by: Bartlomiej Zolnierkiewicz --- 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");