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[7/7] spi: pxa2xx: Add support for Intel Broxton

Message ID 1445521485-2029-7-git-send-email-jarkko.nikula@linux.intel.com (mailing list archive)
State Accepted
Commit b7c08cf85c9a3a4b05474b7acacc9fbce8fb3eaf
Headers show

Commit Message

Jarkko Nikula Oct. 22, 2015, 1:44 p.m. UTC 
LPSS SPI in Intel Broxton is otherwise the same than in Intel Sunrisepoint
but it supports up to four chip selects per port and has different FIFO
thresholds. Patch adds support for two Broxton SoC variants.

Signed-off-by: Jarkko Nikula <jarkko.nikula@linux.intel.com>
---
 drivers/spi/spi-pxa2xx.c   | 20 ++++++++++++++++++++
 include/linux/pxa2xx_ssp.h |  1 +
 2 files changed, 21 insertions(+)
diff mbox

Patch

diff --git a/drivers/spi/spi-pxa2xx.c b/drivers/spi/spi-pxa2xx.c
index 6851649d1b15..b2dfc720772f 100644
--- a/drivers/spi/spi-pxa2xx.c
+++ b/drivers/spi/spi-pxa2xx.c
@@ -116,6 +116,16 @@  static const struct lpss_config lpss_platforms[] = {
 		.tx_threshold_lo = 32,
 		.tx_threshold_hi = 56,
 	},
+	{	/* LPSS_BXT_SSP */
+		.offset = 0x200,
+		.reg_general = -1,
+		.reg_ssp = 0x20,
+		.reg_cs_ctrl = 0x24,
+		.reg_capabilities = 0xfc,
+		.rx_threshold = 1,
+		.tx_threshold_lo = 16,
+		.tx_threshold_hi = 48,
+	},
 };
 
 static inline const struct lpss_config
@@ -130,6 +140,7 @@  static bool is_lpss_ssp(const struct driver_data *drv_data)
 	case LPSS_LPT_SSP:
 	case LPSS_BYT_SSP:
 	case LPSS_SPT_SSP:
+	case LPSS_BXT_SSP:
 		return true;
 	default:
 		return false;
@@ -1156,6 +1167,7 @@  static int setup(struct spi_device *spi)
 	case LPSS_LPT_SSP:
 	case LPSS_BYT_SSP:
 	case LPSS_SPT_SSP:
+	case LPSS_BXT_SSP:
 		config = lpss_get_config(drv_data);
 		tx_thres = config->tx_threshold_lo;
 		tx_hi_thres = config->tx_threshold_hi;
@@ -1317,6 +1329,14 @@  static const struct pci_device_id pxa2xx_spi_pci_compound_match[] = {
 	/* SPT-H */
 	{ PCI_VDEVICE(INTEL, 0xa129), LPSS_SPT_SSP },
 	{ PCI_VDEVICE(INTEL, 0xa12a), LPSS_SPT_SSP },
+	/* BXT */
+	{ PCI_VDEVICE(INTEL, 0x0ac2), LPSS_BXT_SSP },
+	{ PCI_VDEVICE(INTEL, 0x0ac4), LPSS_BXT_SSP },
+	{ PCI_VDEVICE(INTEL, 0x0ac6), LPSS_BXT_SSP },
+	/* APL */
+	{ PCI_VDEVICE(INTEL, 0x5ac2), LPSS_BXT_SSP },
+	{ PCI_VDEVICE(INTEL, 0x5ac4), LPSS_BXT_SSP },
+	{ PCI_VDEVICE(INTEL, 0x5ac6), LPSS_BXT_SSP },
 	{ },
 };
 
diff --git a/include/linux/pxa2xx_ssp.h b/include/linux/pxa2xx_ssp.h
index 92273776bce6..c2f2574ff61c 100644
--- a/include/linux/pxa2xx_ssp.h
+++ b/include/linux/pxa2xx_ssp.h
@@ -198,6 +198,7 @@  enum pxa_ssp_type {
 	LPSS_LPT_SSP, /* Keep LPSS types sorted with lpss_platforms[] */
 	LPSS_BYT_SSP,
 	LPSS_SPT_SSP,
+	LPSS_BXT_SSP,
 };
 
 struct ssp_device {