summaryrefslogtreecommitdiff
path: root/drivers/spi/spi-pxa2xx.c
diff options
context:
space:
mode:
Diffstat (limited to 'drivers/spi/spi-pxa2xx.c')
-rw-r--r--drivers/spi/spi-pxa2xx.c47
1 files changed, 42 insertions, 5 deletions
diff --git a/drivers/spi/spi-pxa2xx.c b/drivers/spi/spi-pxa2xx.c
index 6a0eb32408b6..cab39b06bc89 100644
--- a/drivers/spi/spi-pxa2xx.c
+++ b/drivers/spi/spi-pxa2xx.c
@@ -62,6 +62,13 @@ MODULE_ALIAS("platform:pxa2xx-spi");
| QUARK_X1000_SSCR1_TFT \
| SSCR1_SPH | SSCR1_SPO | SSCR1_LBM)
+#define CE4100_SSCR1_CHANGE_MASK (SSCR1_TTELP | SSCR1_TTE | SSCR1_SCFR \
+ | SSCR1_ECRA | SSCR1_ECRB | SSCR1_SCLKDIR \
+ | SSCR1_SFRMDIR | SSCR1_RWOT | SSCR1_TRAIL \
+ | SSCR1_IFS | SSCR1_STRF | SSCR1_EFWR \
+ | CE4100_SSCR1_RFT | CE4100_SSCR1_TFT | SSCR1_MWDS \
+ | SSCR1_SPH | SSCR1_SPO | SSCR1_LBM)
+
#define LPSS_GENERAL_REG_RXTO_HOLDOFF_DISABLE BIT(24)
#define LPSS_CS_CONTROL_SW_MODE BIT(0)
#define LPSS_CS_CONTROL_CS_HIGH BIT(1)
@@ -175,6 +182,8 @@ static u32 pxa2xx_spi_get_ssrc1_change_mask(const struct driver_data *drv_data)
switch (drv_data->ssp_type) {
case QUARK_X1000_SSP:
return QUARK_X1000_SSCR1_CHANGE_MASK;
+ case CE4100_SSP:
+ return CE4100_SSCR1_CHANGE_MASK;
default:
return SSCR1_CHANGE_MASK;
}
@@ -186,6 +195,8 @@ pxa2xx_spi_get_rx_default_thre(const struct driver_data *drv_data)
switch (drv_data->ssp_type) {
case QUARK_X1000_SSP:
return RX_THRESH_QUARK_X1000_DFLT;
+ case CE4100_SSP:
+ return RX_THRESH_CE4100_DFLT;
default:
return RX_THRESH_DFLT;
}
@@ -199,6 +210,9 @@ static bool pxa2xx_spi_txfifo_full(const struct driver_data *drv_data)
case QUARK_X1000_SSP:
mask = QUARK_X1000_SSSR_TFL_MASK;
break;
+ case CE4100_SSP:
+ mask = CE4100_SSSR_TFL_MASK;
+ break;
default:
mask = SSSR_TFL_MASK;
break;
@@ -216,6 +230,9 @@ static void pxa2xx_spi_clear_rx_thre(const struct driver_data *drv_data,
case QUARK_X1000_SSP:
mask = QUARK_X1000_SSCR1_RFT;
break;
+ case CE4100_SSP:
+ mask = CE4100_SSCR1_RFT;
+ break;
default:
mask = SSCR1_RFT;
break;
@@ -230,6 +247,9 @@ static void pxa2xx_spi_set_rx_thre(const struct driver_data *drv_data,
case QUARK_X1000_SSP:
*sccr1_reg |= QUARK_X1000_SSCR1_RxTresh(threshold);
break;
+ case CE4100_SSP:
+ *sccr1_reg |= CE4100_SSCR1_RxTresh(threshold);
+ break;
default:
*sccr1_reg |= SSCR1_RxTresh(threshold);
break;
@@ -590,6 +610,9 @@ static void reset_sccr1(struct driver_data *drv_data)
case QUARK_X1000_SSP:
sccr1_reg &= ~QUARK_X1000_SSCR1_RFT;
break;
+ case CE4100_SSP:
+ sccr1_reg &= ~CE4100_SSCR1_RFT;
+ break;
default:
sccr1_reg &= ~SSCR1_RFT;
break;
@@ -1220,6 +1243,11 @@ static int setup(struct spi_device *spi)
tx_hi_thres = 0;
rx_thres = RX_THRESH_QUARK_X1000_DFLT;
break;
+ case CE4100_SSP:
+ tx_thres = TX_THRESH_CE4100_DFLT;
+ tx_hi_thres = 0;
+ rx_thres = RX_THRESH_CE4100_DFLT;
+ break;
case LPSS_LPT_SSP:
case LPSS_BYT_SSP:
case LPSS_BSW_SSP:
@@ -1304,6 +1332,10 @@ static int setup(struct spi_device *spi)
| (QUARK_X1000_SSCR1_TxTresh(tx_thres)
& QUARK_X1000_SSCR1_TFT);
break;
+ case CE4100_SSP:
+ chip->threshold = (CE4100_SSCR1_RxTresh(rx_thres) & CE4100_SSCR1_RFT) |
+ (CE4100_SSCR1_TxTresh(tx_thres) & CE4100_SSCR1_TFT);
+ break;
default:
chip->threshold = (SSCR1_RxTresh(rx_thres) & SSCR1_RFT) |
(SSCR1_TxTresh(tx_thres) & SSCR1_TFT);
@@ -1625,15 +1657,20 @@ static int pxa2xx_spi_probe(struct platform_device *pdev)
pxa2xx_spi_write(drv_data, SSCR0, 0);
switch (drv_data->ssp_type) {
case QUARK_X1000_SSP:
- tmp = QUARK_X1000_SSCR1_RxTresh(RX_THRESH_QUARK_X1000_DFLT)
- | QUARK_X1000_SSCR1_TxTresh(TX_THRESH_QUARK_X1000_DFLT);
+ tmp = QUARK_X1000_SSCR1_RxTresh(RX_THRESH_QUARK_X1000_DFLT) |
+ QUARK_X1000_SSCR1_TxTresh(TX_THRESH_QUARK_X1000_DFLT);
pxa2xx_spi_write(drv_data, SSCR1, tmp);
/* using the Motorola SPI protocol and use 8 bit frame */
- pxa2xx_spi_write(drv_data, SSCR0,
- QUARK_X1000_SSCR0_Motorola
- | QUARK_X1000_SSCR0_DataSize(8));
+ tmp = QUARK_X1000_SSCR0_Motorola | QUARK_X1000_SSCR0_DataSize(8);
+ pxa2xx_spi_write(drv_data, SSCR0, tmp);
break;
+ case CE4100_SSP:
+ tmp = CE4100_SSCR1_RxTresh(RX_THRESH_CE4100_DFLT) |
+ CE4100_SSCR1_TxTresh(TX_THRESH_CE4100_DFLT);
+ pxa2xx_spi_write(drv_data, SSCR1, tmp);
+ tmp = SSCR0_SCR(2) | SSCR0_Motorola | SSCR0_DataSize(8);
+ pxa2xx_spi_write(drv_data, SSCR0, tmp);
default:
tmp = SSCR1_RxTresh(RX_THRESH_DFLT) |
SSCR1_TxTresh(TX_THRESH_DFLT);