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[4/5] spi: pxa2xx: Add support for Intel Broxton

Message ID 1446038023-8819-4-git-send-email-jarkko.nikula@linux.intel.com (mailing list archive)
State New, archived
Headers show

Commit Message

Jarkko Nikula Oct. 28, 2015, 1:13 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 4f4edebdc29f..1d5392e5a952 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 {