Hi, Has anyone had the chance to take a look at this set of patches?
On Sat, 23 Oct 2010 00:41:02 -0700 Andres Salomon <[email protected]> wrote: > > Add an MFD driver to handle the ISA device on CS5535 and CS5536 > southbridges. This ISA bridge is actually multiple devices; GPIOs, > MFGPTs, etc. > > Signed-off-by: Andres Salomon <[email protected]> > --- > drivers/mfd/Kconfig | 8 +++ > drivers/mfd/Makefile | 1 + > drivers/mfd/cs5535-mfd.c | 151 > ++++++++++++++++++++++++++++++++++++++++++++++ 3 files changed, 160 > insertions(+), 0 deletions(-) create mode 100644 > drivers/mfd/cs5535-mfd.c > > diff --git a/drivers/mfd/Kconfig b/drivers/mfd/Kconfig > index db51ea1..b72627b 100644 > --- a/drivers/mfd/Kconfig > +++ b/drivers/mfd/Kconfig > @@ -495,6 +495,14 @@ config AB3550_CORE > LEDs, vibrator, system power and temperature, power > management and ALSA sound. > > +config MFD_CS5535 > + tristate "Support for CS5535 and CS5536 southbridge core > functions" > + select MFD_CORE > + depends on PCI > + ---help--- > + This is the core driver for CS5535/CS5536 MFD functions. > This is > + necessary for using the board's GPIO and MFGPT > functionality. + > config MFD_TIMBERDALE > tristate "Support for the Timberdale FPGA" > select MFD_CORE > diff --git a/drivers/mfd/Makefile b/drivers/mfd/Makefile > index feaeeae..3d1b41a 100644 > --- a/drivers/mfd/Makefile > +++ b/drivers/mfd/Makefile > @@ -69,6 +69,7 @@ obj-$(CONFIG_AB3100_CORE) += ab3100-core.o > obj-$(CONFIG_AB3100_OTP) += ab3100-otp.o > obj-$(CONFIG_AB3550_CORE) += ab3550-core.o > obj-$(CONFIG_AB8500_CORE) += ab8500-core.o ab8500-spi.o > +obj-$(CONFIG_MFD_CS5535) += cs5535-mfd.o > obj-$(CONFIG_MFD_TIMBERDALE) += timberdale.o > obj-$(CONFIG_PMIC_ADP5520) += adp5520.o > obj-$(CONFIG_LPC_SCH) += lpc_sch.o > diff --git a/drivers/mfd/cs5535-mfd.c b/drivers/mfd/cs5535-mfd.c > new file mode 100644 > index 0000000..b141ca7 > --- /dev/null > +++ b/drivers/mfd/cs5535-mfd.c > @@ -0,0 +1,151 @@ > +/* > + * cs5535-mfd.c - core MFD driver for CS5535/CS5536 southbridges > + * > + * The CS5535 and CS5536 has an ISA bridge on the PCI bus that is > + * used for accessing GPIOs, MFGPTs, ACPI, etc. Each subdevice has > + * an IO range that's specified in a single BAR. The BAR order is > + * hardcoded in the CS553x specifications. > + * > + * Copyright (c) 2010 Andres Salomon <[email protected]> > + * > + * This program is free software; you can redistribute it and/or > modify > + * it under the terms of the GNU General Public License version 2 as > + * published by the Free Software Foundation. > + * > + * This program is distributed in the hope that it will be useful, > + * but WITHOUT ANY WARRANTY; without even the implied warranty of > + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the > + * GNU General Public License for more details. > + * > + * You should have received a copy of the GNU General Public License > + * along with this program; if not, write to the Free Software > + * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. > + */ > + > +#include <linux/kernel.h> > +#include <linux/init.h> > +#include <linux/mfd/core.h> > +#include <linux/module.h> > +#include <linux/pci.h> > + > +#define DRV_NAME "cs5535-mfd" > + > +enum cs5535_mfd_bars { > + SMB_BAR = 0, > + GPIO_BAR = 1, > + MFGPT_BAR = 2, > + PMS_BAR = 4, > + ACPI_BAR = 5, > + NR_BARS, > +}; > + > +static __devinitdata struct resource cs5535_mfd_resources[NR_BARS]; > + > +static __devinitdata struct mfd_cell cs5535_mfd_cells[] = { > + { > + .id = SMB_BAR, > + .name = "cs5535-smb", > + .num_resources = 1, > + .resources = &cs5535_mfd_resources[SMB_BAR], > + }, > + { > + .id = GPIO_BAR, > + .name = "cs5535-gpio", > + .num_resources = 1, > + .resources = &cs5535_mfd_resources[GPIO_BAR], > + }, > + { > + .id = MFGPT_BAR, > + .name = "cs5535-mfgpt", > + .num_resources = 1, > + .resources = &cs5535_mfd_resources[MFGPT_BAR], > + }, > + { > + .id = PMS_BAR, > + .name = "cs5535-pms", > + .num_resources = 1, > + .resources = &cs5535_mfd_resources[PMS_BAR], > + }, > + { > + .id = ACPI_BAR, > + .name = "cs5535-acpi", > + .num_resources = 1, > + .resources = &cs5535_mfd_resources[ACPI_BAR], > + }, > +}; > + > +static int __devinit cs5535_mfd_probe(struct pci_dev *pdev, > + const struct pci_device_id *id) > +{ > + int err, i; > + > + err = pci_enable_device(pdev); > + if (err) > + return err; > + > + /* fill in IO range for each cell; subdrivers handle the > region */ > + for (i = 0; i < ARRAY_SIZE(cs5535_mfd_cells); i++) { > + int bar = cs5535_mfd_cells[i].id; > + struct resource *r = &cs5535_mfd_resources[bar]; > + > + r->flags = IORESOURCE_IO; > + r->start = pci_resource_start(pdev, bar); > + r->end = pci_resource_end(pdev, bar); > + > + /* id is used for temporarily storing BAR; unset it > now */ > + cs5535_mfd_cells[i].id = 0; > + } > + > + err = mfd_add_devices(&pdev->dev, -1, cs5535_mfd_cells, > + ARRAY_SIZE(cs5535_mfd_cells), NULL, 0); > + if (err) { > + dev_err(&pdev->dev, "MFD add devices failed: %d\n", > err); > + goto err_disable; > + } > + > + dev_info(&pdev->dev, "%d devices registered.\n", > + ARRAY_SIZE(cs5535_mfd_cells)); > + > + return 0; > + > +err_disable: > + pci_disable_device(pdev); > + return err; > +} > + > +static void __devexit cs5535_mfd_remove(struct pci_dev *pdev) > +{ > + mfd_remove_devices(&pdev->dev); > + pci_disable_device(pdev); > +} > + > +static struct pci_device_id cs5535_mfd_pci_tbl[] = { > + { PCI_DEVICE(PCI_VENDOR_ID_NS, > PCI_DEVICE_ID_NS_CS5535_ISA) }, > + { PCI_DEVICE(PCI_VENDOR_ID_AMD, > PCI_DEVICE_ID_AMD_CS5536_ISA) }, > + { 0, } > +}; > +MODULE_DEVICE_TABLE(pci, cs5535_mfd_pci_tbl); > + > +static struct pci_driver cs5535_mfd_drv = { > + .name = DRV_NAME, > + .id_table = cs5535_mfd_pci_tbl, > + .probe = cs5535_mfd_probe, > + .remove = __devexit_p(cs5535_mfd_remove), > +}; > + > +static int __init cs5535_mfd_init(void) > +{ > + return pci_register_driver(&cs5535_mfd_drv); > +} > + > +static void __exit cs5535_mfd_exit(void) > +{ > + pci_unregister_driver(&cs5535_mfd_drv); > +} > + > +module_init(cs5535_mfd_init); > +module_exit(cs5535_mfd_exit); > + > +MODULE_AUTHOR("Andres Salomon <[email protected]>"); > +MODULE_DESCRIPTION("MFD driver for CS5535/CS5536 southbridge's ISA > PCI device"); +MODULE_LICENSE("GPL"); _______________________________________________ Linux-geode mailing list [email protected] http://lists.infradead.org/mailman/listinfo/linux-geode
