diff options
| author | Pawel Szyszuk <pawel.szyszuk@stericsson.com> | 2011-10-06 11:04:12 +0100 |
|---|---|---|
| committer | Philippe Langlais <philippe.langlais@stericsson.com> | 2012-05-22 11:07:30 +0200 |
| commit | 3eb3e1775ead27876884f5119342cdd8ffb091b9 (patch) | |
| tree | 44dfa8a0e644eb8c5180ae7ca7cecbc4efd895c4 | |
| parent | 5174d0306e48e9ddd0d5cc663c7b9dc910fe5db3 (diff) | |
ARM: U9500: HSI RX PIPELINE buffer flush
ST-Ericsson Linux next: NA
ST-Ericsson ID: 365683
ST-Ericsson FOSS-OUT ID: NA
Change-Id: I25b92d815447d2746ba25a9db132b242b3da9d9c
Signed-off-by: Pawel Szyszuk <pawel.szyszuk@stericsson.com>
Reviewed-on: http://gerrit.lud.stericsson.com/gerrit/33223
Reviewed-by: Christopher BLAIR <chris.blair@stericsson.com>
Reviewed-by: Derek MORTON <derek.morton@stericsson.com>
Reviewed-by: Andrew LYNN <andrew.lynn@stericsson.com>
| -rw-r--r-- | drivers/hsi/controllers/ste_hsi.c | 12 |
1 files changed, 4 insertions, 8 deletions
diff --git a/drivers/hsi/controllers/ste_hsi.c b/drivers/hsi/controllers/ste_hsi.c index a2cbb2108f7..fe43d7b2133 100644 --- a/drivers/hsi/controllers/ste_hsi.c +++ b/drivers/hsi/controllers/ste_hsi.c @@ -1353,17 +1353,13 @@ static int ste_hsi_flush(struct hsi_client *cl) writel(0, ste_hsi->rx_base + STE_HSI_RX_DMAEN); ste_hsi_terminate_dma(ste_port); - /* Flush all HSIR and HSIT buffers */ + /* Flush HSIT buffers */ writel(0, ste_hsi->tx_base + STE_HSI_TX_STATE); writel(0, ste_hsi->tx_base + STE_HSI_TX_BUFSTATE); + + /* Flush HSIR pipeline and channel buffers */ writel(0, ste_hsi->rx_base + STE_HSI_RX_STATE); - /* - * BUFSTATE is cleared twice on purpose: - * first time all fifos are cleared - * second time to clear data that was in pipline buffer - * and was transfered to fifos - */ - writel(0, ste_hsi->rx_base + STE_HSI_RX_BUFSTATE); + writel(0, ste_hsi->rx_base + STE_HSI_RX_PIPEGAUGE); writel(0, ste_hsi->rx_base + STE_HSI_RX_BUFSTATE); /* Flush all errors */ |