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ata: ceva: Make RxWaterMark value as module parameter 

This patch updates the driver to make Rx Fifo water mark value
as a module parameter.

Signed-off-by: Anurag Kumar Vulisha <anuragku@xilinx.com>
Signed-off-by: Michal Simek <michal.simek@xilinx.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
This commit is contained in:
Anurag Kumar Vulisha 2017-08-21 13:17:20 +02:00 committed by Tejun Heo
parent ff0d63778c
commit 05e890d843
1 changed files with 5 additions and 1 deletions
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6
drivers/ata/ahci_ceva.c
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@ -71,6 +71,10 @@
#define DRV_NAME "ahci-ceva"
#define CEVA_FLAG_BROKEN_GEN2 1
static unsigned int rx_watermark = PTC_RX_WM_VAL;
module_param(rx_watermark, uint, 0644);
MODULE_PARM_DESC(rx_watermark, "RxWaterMark value (0 - 0x80)");
struct ceva_ahci_priv {
struct platform_device *ahci_pdev;
/* Port Phy2Cfg Register */
@ -152,7 +156,7 @@ static void ahci_ceva_setup(struct ahci_host_priv *hpriv)
writel(cevapriv->pp5c[i], mmio + AHCI_VEND_PP5C);
/* Rx Watermark setting */
tmp = PTC_RX_WM_VAL | PTC_RSVD;
tmp = rx_watermark | PTC_RSVD;
writel(tmp, mmio + AHCI_VEND_PTC);
/* Default to Gen 3 Speed and Gen 1 if Gen2 is broken */