summaryrefslogtreecommitdiff
path: root/src
diff options
context:
space:
mode:
authorBen Chuang <benchuanggli@gmail.com>2020-09-03 16:02:46 +0800
committerTim Wawrzynczak <twawrzynczak@chromium.org>2020-09-18 15:49:15 +0000
commitff17b31dfb576d369e5f06c425f50c9e56bf2b5f (patch)
tree9aa94e09666b92fdd3aefbcff945b9824692a1ab /src
parent8ad2b8be253601e3b7bf1a318a0458442e8571b0 (diff)
downloadcoreboot-ff17b31dfb576d369e5f06c425f50c9e56bf2b5f.tar.xz
drivers/genesyslogic/gl9755: Add driver for Genesys Logic GL9755
The device is a PCIe Gen2 to SD 4.0 card reader controller to be used in the Chromebook. The datasheet name is GL9755S and the revision is 05. The patch sets LTR value. Signed-off-by: Ben Chuang <benchuanggli@gmail.com> Change-Id: I16048dde348be248c748d50ca4a8a62c8a781430 Reviewed-on: https://review.coreboot.org/c/coreboot/+/45062 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Angel Pons <th3fanbus@gmail.com> Reviewed-by: Tim Wawrzynczak <twawrzynczak@chromium.org>
Diffstat (limited to 'src')
-rw-r--r--src/drivers/genesyslogic/gl9755/Kconfig7
-rw-r--r--src/drivers/genesyslogic/gl9755/Makefile.inc1
-rw-r--r--src/drivers/genesyslogic/gl9755/gl9755.c47
-rw-r--r--src/drivers/genesyslogic/gl9755/gl9755.h11
-rw-r--r--src/include/device/pci_ids.h1
5 files changed, 67 insertions, 0 deletions
diff --git a/src/drivers/genesyslogic/gl9755/Kconfig b/src/drivers/genesyslogic/gl9755/Kconfig
new file mode 100644
index 0000000000..5bccb9b490
--- /dev/null
+++ b/src/drivers/genesyslogic/gl9755/Kconfig
@@ -0,0 +1,7 @@
+config DRIVERS_GENESYSLOGIC_GL9755
+ bool "Genesys Logic GL9755"
+ help
+ GL9755 is a PCI Express Rev. 2.1 compliant card reader controller
+ which integrates PCI Express PHY, UHS-II PHY, memory card access
+ interface, regulators (3.3V-to-1.8V and 3.3V-to-1.2V) and card
+ power switch.
diff --git a/src/drivers/genesyslogic/gl9755/Makefile.inc b/src/drivers/genesyslogic/gl9755/Makefile.inc
new file mode 100644
index 0000000000..995cfd30f6
--- /dev/null
+++ b/src/drivers/genesyslogic/gl9755/Makefile.inc
@@ -0,0 +1 @@
+ramstage-$(CONFIG_DRIVERS_GENESYSLOGIC_GL9755) += gl9755.c
diff --git a/src/drivers/genesyslogic/gl9755/gl9755.c b/src/drivers/genesyslogic/gl9755/gl9755.c
new file mode 100644
index 0000000000..c3cdef11e7
--- /dev/null
+++ b/src/drivers/genesyslogic/gl9755/gl9755.c
@@ -0,0 +1,47 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+
+/* Driver for Genesys Logic GL9755 */
+
+#include <console/console.h>
+#include <device/device.h>
+#include <device/path.h>
+#include <device/pci.h>
+#include <device/pci_ops.h>
+#include <device/pci_ids.h>
+#include "gl9755.h"
+
+static void gl9755_init(struct device *dev)
+{
+ printk(BIOS_INFO, "GL9755: init\n");
+ pci_dev_init(dev);
+
+ /* Set Vendor Config to be configurable */
+ pci_or_config32(dev, CFG, CFG_EN);
+ /* Set LTR value */
+ pci_write_config32(dev, LTR, NO_SNOOP_SCALE|NO_SNOOP_VALUE|SNOOP_SCALE|SNOOP_VALUE);
+ /* Set Vendor Config to be non-configurable */
+ pci_and_config32(dev, CFG, ~CFG_EN);
+}
+
+static struct device_operations gl9755_ops = {
+ .read_resources = pci_dev_read_resources,
+ .set_resources = pci_dev_set_resources,
+ .enable_resources = pci_dev_enable_resources,
+ .ops_pci = &pci_dev_ops_pci,
+ .init = gl9755_init,
+};
+
+static const unsigned short pci_device_ids[] = {
+ PCI_DEVICE_ID_GLI_9755,
+ 0
+};
+
+static const struct pci_driver genesyslogic_gl9755 __pci_driver = {
+ .ops = &gl9755_ops,
+ .vendor = PCI_VENDOR_ID_GLI,
+ .devices = pci_device_ids,
+};
+
+struct chip_operations drivers_generic_genesyslogic_gl9755_ops = {
+ CHIP_NAME("Genesys Logic GL9755")
+};
diff --git a/src/drivers/genesyslogic/gl9755/gl9755.h b/src/drivers/genesyslogic/gl9755/gl9755.h
new file mode 100644
index 0000000000..2d20faf695
--- /dev/null
+++ b/src/drivers/genesyslogic/gl9755/gl9755.h
@@ -0,0 +1,11 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+
+/* Definitions for Genesys Logic GL9755 */
+
+#define CFG 0x800
+#define CFG_EN 0x1
+#define LTR 0x5C
+#define SNOOP_VALUE 0x25
+#define SNOOP_SCALE (0x3 << 10)
+#define NO_SNOOP_VALUE (0x25 << 16)
+#define NO_SNOOP_SCALE (0x3 << 26)
diff --git a/src/include/device/pci_ids.h b/src/include/device/pci_ids.h
index 944c20eb83..83cf25e84d 100644
--- a/src/include/device/pci_ids.h
+++ b/src/include/device/pci_ids.h
@@ -2033,6 +2033,7 @@
#define PCI_VENDOR_ID_GLI 0x17a0
#define PCI_DEVICE_ID_GLI_9763E 0xe763
+#define PCI_DEVICE_ID_GLI_9755 0x9755
#define PCI_VENDOR_ID_XGI 0x18ca
#define PCI_DEVICE_ID_XGI_20 0x0020