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authorAndré Fabian Silva Delgado <emulatorman@parabola.nu>2016-09-11 04:34:46 -0300
committerAndré Fabian Silva Delgado <emulatorman@parabola.nu>2016-09-11 04:34:46 -0300
commit863981e96738983919de841ec669e157e6bdaeb0 (patch)
treed6d89a12e7eb8017837c057935a2271290907f76 /drivers/hsi/controllers/omap_ssi.c
parent8dec7c70575785729a6a9e6719a955e9c545bcab (diff)
Linux-libre 4.7.1-gnupck-4.7.1-gnu
Diffstat (limited to 'drivers/hsi/controllers/omap_ssi.c')
-rw-r--r--drivers/hsi/controllers/omap_ssi.c610
1 files changed, 0 insertions, 610 deletions
diff --git a/drivers/hsi/controllers/omap_ssi.c b/drivers/hsi/controllers/omap_ssi.c
deleted file mode 100644
index 27b91f14b..000000000
--- a/drivers/hsi/controllers/omap_ssi.c
+++ /dev/null
@@ -1,610 +0,0 @@
-/* OMAP SSI driver.
- *
- * Copyright (C) 2010 Nokia Corporation. All rights reserved.
- * Copyright (C) 2014 Sebastian Reichel <sre@kernel.org>
- *
- * Contact: Carlos Chinea <carlos.chinea@nokia.com>
- *
- * 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., 51 Franklin St, Fifth Floor, Boston, MA
- * 02110-1301 USA
- */
-
-#include <linux/compiler.h>
-#include <linux/err.h>
-#include <linux/ioport.h>
-#include <linux/io.h>
-#include <linux/gpio.h>
-#include <linux/clk.h>
-#include <linux/device.h>
-#include <linux/platform_device.h>
-#include <linux/dma-mapping.h>
-#include <linux/dmaengine.h>
-#include <linux/delay.h>
-#include <linux/seq_file.h>
-#include <linux/scatterlist.h>
-#include <linux/interrupt.h>
-#include <linux/spinlock.h>
-#include <linux/debugfs.h>
-#include <linux/pm_runtime.h>
-#include <linux/of_platform.h>
-#include <linux/hsi/hsi.h>
-#include <linux/idr.h>
-
-#include "omap_ssi_regs.h"
-#include "omap_ssi.h"
-
-/* For automatically allocated device IDs */
-static DEFINE_IDA(platform_omap_ssi_ida);
-
-#ifdef CONFIG_DEBUG_FS
-static int ssi_debug_show(struct seq_file *m, void *p __maybe_unused)
-{
- struct hsi_controller *ssi = m->private;
- struct omap_ssi_controller *omap_ssi = hsi_controller_drvdata(ssi);
- void __iomem *sys = omap_ssi->sys;
-
- pm_runtime_get_sync(ssi->device.parent);
- seq_printf(m, "REVISION\t: 0x%08x\n", readl(sys + SSI_REVISION_REG));
- seq_printf(m, "SYSCONFIG\t: 0x%08x\n", readl(sys + SSI_SYSCONFIG_REG));
- seq_printf(m, "SYSSTATUS\t: 0x%08x\n", readl(sys + SSI_SYSSTATUS_REG));
- pm_runtime_put_sync(ssi->device.parent);
-
- return 0;
-}
-
-static int ssi_debug_gdd_show(struct seq_file *m, void *p __maybe_unused)
-{
- struct hsi_controller *ssi = m->private;
- struct omap_ssi_controller *omap_ssi = hsi_controller_drvdata(ssi);
- void __iomem *gdd = omap_ssi->gdd;
- void __iomem *sys = omap_ssi->sys;
- int lch;
-
- pm_runtime_get_sync(ssi->device.parent);
-
- seq_printf(m, "GDD_MPU_STATUS\t: 0x%08x\n",
- readl(sys + SSI_GDD_MPU_IRQ_STATUS_REG));
- seq_printf(m, "GDD_MPU_ENABLE\t: 0x%08x\n\n",
- readl(sys + SSI_GDD_MPU_IRQ_ENABLE_REG));
- seq_printf(m, "HW_ID\t\t: 0x%08x\n",
- readl(gdd + SSI_GDD_HW_ID_REG));
- seq_printf(m, "PPORT_ID\t: 0x%08x\n",
- readl(gdd + SSI_GDD_PPORT_ID_REG));
- seq_printf(m, "MPORT_ID\t: 0x%08x\n",
- readl(gdd + SSI_GDD_MPORT_ID_REG));
- seq_printf(m, "TEST\t\t: 0x%08x\n",
- readl(gdd + SSI_GDD_TEST_REG));
- seq_printf(m, "GCR\t\t: 0x%08x\n",
- readl(gdd + SSI_GDD_GCR_REG));
-
- for (lch = 0; lch < SSI_MAX_GDD_LCH; lch++) {
- seq_printf(m, "\nGDD LCH %d\n=========\n", lch);
- seq_printf(m, "CSDP\t\t: 0x%04x\n",
- readw(gdd + SSI_GDD_CSDP_REG(lch)));
- seq_printf(m, "CCR\t\t: 0x%04x\n",
- readw(gdd + SSI_GDD_CCR_REG(lch)));
- seq_printf(m, "CICR\t\t: 0x%04x\n",
- readw(gdd + SSI_GDD_CICR_REG(lch)));
- seq_printf(m, "CSR\t\t: 0x%04x\n",
- readw(gdd + SSI_GDD_CSR_REG(lch)));
- seq_printf(m, "CSSA\t\t: 0x%08x\n",
- readl(gdd + SSI_GDD_CSSA_REG(lch)));
- seq_printf(m, "CDSA\t\t: 0x%08x\n",
- readl(gdd + SSI_GDD_CDSA_REG(lch)));
- seq_printf(m, "CEN\t\t: 0x%04x\n",
- readw(gdd + SSI_GDD_CEN_REG(lch)));
- seq_printf(m, "CSAC\t\t: 0x%04x\n",
- readw(gdd + SSI_GDD_CSAC_REG(lch)));
- seq_printf(m, "CDAC\t\t: 0x%04x\n",
- readw(gdd + SSI_GDD_CDAC_REG(lch)));
- seq_printf(m, "CLNK_CTRL\t: 0x%04x\n",
- readw(gdd + SSI_GDD_CLNK_CTRL_REG(lch)));
- }
-
- pm_runtime_put_sync(ssi->device.parent);
-
- return 0;
-}
-
-static int ssi_regs_open(struct inode *inode, struct file *file)
-{
- return single_open(file, ssi_debug_show, inode->i_private);
-}
-
-static int ssi_gdd_regs_open(struct inode *inode, struct file *file)
-{
- return single_open(file, ssi_debug_gdd_show, inode->i_private);
-}
-
-static const struct file_operations ssi_regs_fops = {
- .open = ssi_regs_open,
- .read = seq_read,
- .llseek = seq_lseek,
- .release = single_release,
-};
-
-static const struct file_operations ssi_gdd_regs_fops = {
- .open = ssi_gdd_regs_open,
- .read = seq_read,
- .llseek = seq_lseek,
- .release = single_release,
-};
-
-static int __init ssi_debug_add_ctrl(struct hsi_controller *ssi)
-{
- struct omap_ssi_controller *omap_ssi = hsi_controller_drvdata(ssi);
- struct dentry *dir;
-
- /* SSI controller */
- omap_ssi->dir = debugfs_create_dir(dev_name(&ssi->device), NULL);
- if (!omap_ssi->dir)
- return -ENOMEM;
-
- debugfs_create_file("regs", S_IRUGO, omap_ssi->dir, ssi,
- &ssi_regs_fops);
- /* SSI GDD (DMA) */
- dir = debugfs_create_dir("gdd", omap_ssi->dir);
- if (!dir)
- goto rback;
- debugfs_create_file("regs", S_IRUGO, dir, ssi, &ssi_gdd_regs_fops);
-
- return 0;
-rback:
- debugfs_remove_recursive(omap_ssi->dir);
-
- return -ENOMEM;
-}
-
-static void ssi_debug_remove_ctrl(struct hsi_controller *ssi)
-{
- struct omap_ssi_controller *omap_ssi = hsi_controller_drvdata(ssi);
-
- debugfs_remove_recursive(omap_ssi->dir);
-}
-#endif /* CONFIG_DEBUG_FS */
-
-/*
- * FIXME: Horrible HACK needed until we remove the useless wakeline test
- * in the CMT. To be removed !!!!
- */
-void ssi_waketest(struct hsi_client *cl, unsigned int enable)
-{
- struct hsi_port *port = hsi_get_port(cl);
- struct omap_ssi_port *omap_port = hsi_port_drvdata(port);
- struct hsi_controller *ssi = to_hsi_controller(port->device.parent);
- struct omap_ssi_controller *omap_ssi = hsi_controller_drvdata(ssi);
-
- omap_port->wktest = !!enable;
- if (omap_port->wktest) {
- pm_runtime_get_sync(ssi->device.parent);
- writel_relaxed(SSI_WAKE(0),
- omap_ssi->sys + SSI_SET_WAKE_REG(port->num));
- } else {
- writel_relaxed(SSI_WAKE(0),
- omap_ssi->sys + SSI_CLEAR_WAKE_REG(port->num));
- pm_runtime_put_sync(ssi->device.parent);
- }
-}
-EXPORT_SYMBOL_GPL(ssi_waketest);
-
-static void ssi_gdd_complete(struct hsi_controller *ssi, unsigned int lch)
-{
- struct omap_ssi_controller *omap_ssi = hsi_controller_drvdata(ssi);
- struct hsi_msg *msg = omap_ssi->gdd_trn[lch].msg;
- struct hsi_port *port = to_hsi_port(msg->cl->device.parent);
- struct omap_ssi_port *omap_port = hsi_port_drvdata(port);
- unsigned int dir;
- u32 csr;
- u32 val;
-
- spin_lock(&omap_ssi->lock);
-
- val = readl(omap_ssi->sys + SSI_GDD_MPU_IRQ_ENABLE_REG);
- val &= ~SSI_GDD_LCH(lch);
- writel_relaxed(val, omap_ssi->sys + SSI_GDD_MPU_IRQ_ENABLE_REG);
-
- if (msg->ttype == HSI_MSG_READ) {
- dir = DMA_FROM_DEVICE;
- val = SSI_DATAAVAILABLE(msg->channel);
- pm_runtime_put_sync(ssi->device.parent);
- } else {
- dir = DMA_TO_DEVICE;
- val = SSI_DATAACCEPT(msg->channel);
- /* Keep clocks reference for write pio event */
- }
- dma_unmap_sg(&ssi->device, msg->sgt.sgl, msg->sgt.nents, dir);
- csr = readw(omap_ssi->gdd + SSI_GDD_CSR_REG(lch));
- omap_ssi->gdd_trn[lch].msg = NULL; /* release GDD lch */
- dev_dbg(&port->device, "DMA completed ch %d ttype %d\n",
- msg->channel, msg->ttype);
- spin_unlock(&omap_ssi->lock);
- if (csr & SSI_CSR_TOUR) { /* Timeout error */
- msg->status = HSI_STATUS_ERROR;
- msg->actual_len = 0;
- spin_lock(&omap_port->lock);
- list_del(&msg->link); /* Dequeue msg */
- spin_unlock(&omap_port->lock);
- msg->complete(msg);
- return;
- }
- spin_lock(&omap_port->lock);
- val |= readl(omap_ssi->sys + SSI_MPU_ENABLE_REG(port->num, 0));
- writel_relaxed(val, omap_ssi->sys + SSI_MPU_ENABLE_REG(port->num, 0));
- spin_unlock(&omap_port->lock);
-
- msg->status = HSI_STATUS_COMPLETED;
- msg->actual_len = sg_dma_len(msg->sgt.sgl);
-}
-
-static void ssi_gdd_tasklet(unsigned long dev)
-{
- struct hsi_controller *ssi = (struct hsi_controller *)dev;
- struct omap_ssi_controller *omap_ssi = hsi_controller_drvdata(ssi);
- void __iomem *sys = omap_ssi->sys;
- unsigned int lch;
- u32 status_reg;
-
- pm_runtime_get_sync(ssi->device.parent);
-
- status_reg = readl(sys + SSI_GDD_MPU_IRQ_STATUS_REG);
- for (lch = 0; lch < SSI_MAX_GDD_LCH; lch++) {
- if (status_reg & SSI_GDD_LCH(lch))
- ssi_gdd_complete(ssi, lch);
- }
- writel_relaxed(status_reg, sys + SSI_GDD_MPU_IRQ_STATUS_REG);
- status_reg = readl(sys + SSI_GDD_MPU_IRQ_STATUS_REG);
-
- pm_runtime_put_sync(ssi->device.parent);
-
- if (status_reg)
- tasklet_hi_schedule(&omap_ssi->gdd_tasklet);
- else
- enable_irq(omap_ssi->gdd_irq);
-
-}
-
-static irqreturn_t ssi_gdd_isr(int irq, void *ssi)
-{
- struct omap_ssi_controller *omap_ssi = hsi_controller_drvdata(ssi);
-
- tasklet_hi_schedule(&omap_ssi->gdd_tasklet);
- disable_irq_nosync(irq);
-
- return IRQ_HANDLED;
-}
-
-static unsigned long ssi_get_clk_rate(struct hsi_controller *ssi)
-{
- struct omap_ssi_controller *omap_ssi = hsi_controller_drvdata(ssi);
- unsigned long rate = clk_get_rate(omap_ssi->fck);
- return rate;
-}
-
-static int __init ssi_get_iomem(struct platform_device *pd,
- const char *name, void __iomem **pbase, dma_addr_t *phy)
-{
- struct resource *mem;
- void __iomem *base;
- struct hsi_controller *ssi = platform_get_drvdata(pd);
-
- mem = platform_get_resource_byname(pd, IORESOURCE_MEM, name);
- base = devm_ioremap_resource(&ssi->device, mem);
- if (IS_ERR(base))
- return PTR_ERR(base);
-
- *pbase = base;
-
- if (phy)
- *phy = mem->start;
-
- return 0;
-}
-
-static int __init ssi_add_controller(struct hsi_controller *ssi,
- struct platform_device *pd)
-{
- struct omap_ssi_controller *omap_ssi;
- int err;
-
- omap_ssi = devm_kzalloc(&ssi->device, sizeof(*omap_ssi), GFP_KERNEL);
- if (!omap_ssi) {
- dev_err(&pd->dev, "not enough memory for omap ssi\n");
- return -ENOMEM;
- }
-
- err = ida_simple_get(&platform_omap_ssi_ida, 0, 0, GFP_KERNEL);
- if (err < 0)
- goto out_err;
- ssi->id = err;
-
- ssi->owner = THIS_MODULE;
- ssi->device.parent = &pd->dev;
- dev_set_name(&ssi->device, "ssi%d", ssi->id);
- hsi_controller_set_drvdata(ssi, omap_ssi);
- omap_ssi->dev = &ssi->device;
- err = ssi_get_iomem(pd, "sys", &omap_ssi->sys, NULL);
- if (err < 0)
- goto out_err;
- err = ssi_get_iomem(pd, "gdd", &omap_ssi->gdd, NULL);
- if (err < 0)
- goto out_err;
- err = platform_get_irq_byname(pd, "gdd_mpu");
- if (err < 0) {
- dev_err(&pd->dev, "GDD IRQ resource missing\n");
- goto out_err;
- }
- omap_ssi->gdd_irq = err;
- tasklet_init(&omap_ssi->gdd_tasklet, ssi_gdd_tasklet,
- (unsigned long)ssi);
- err = devm_request_irq(&ssi->device, omap_ssi->gdd_irq, ssi_gdd_isr,
- 0, "gdd_mpu", ssi);
- if (err < 0) {
- dev_err(&ssi->device, "Request GDD IRQ %d failed (%d)",
- omap_ssi->gdd_irq, err);
- goto out_err;
- }
-
- omap_ssi->port = devm_kzalloc(&ssi->device,
- sizeof(struct omap_ssi_port *) * ssi->num_ports, GFP_KERNEL);
- if (!omap_ssi->port) {
- err = -ENOMEM;
- goto out_err;
- }
-
- omap_ssi->fck = devm_clk_get(&ssi->device, "ssi_ssr_fck");
- if (IS_ERR(omap_ssi->fck)) {
- dev_err(&pd->dev, "Could not acquire clock \"ssi_ssr_fck\": %li\n",
- PTR_ERR(omap_ssi->fck));
- err = -ENODEV;
- goto out_err;
- }
-
- /* TODO: find register, which can be used to detect context loss */
- omap_ssi->get_loss = NULL;
-
- omap_ssi->max_speed = UINT_MAX;
- spin_lock_init(&omap_ssi->lock);
- err = hsi_register_controller(ssi);
-
- if (err < 0)
- goto out_err;
-
- return 0;
-
-out_err:
- ida_simple_remove(&platform_omap_ssi_ida, ssi->id);
- return err;
-}
-
-static int __init ssi_hw_init(struct hsi_controller *ssi)
-{
- struct omap_ssi_controller *omap_ssi = hsi_controller_drvdata(ssi);
- unsigned int i;
- u32 val;
- int err;
-
- err = pm_runtime_get_sync(ssi->device.parent);
- if (err < 0) {
- dev_err(&ssi->device, "runtime PM failed %d\n", err);
- return err;
- }
- /* Reseting SSI controller */
- writel_relaxed(SSI_SOFTRESET, omap_ssi->sys + SSI_SYSCONFIG_REG);
- val = readl(omap_ssi->sys + SSI_SYSSTATUS_REG);
- for (i = 0; ((i < 20) && !(val & SSI_RESETDONE)); i++) {
- msleep(20);
- val = readl(omap_ssi->sys + SSI_SYSSTATUS_REG);
- }
- if (!(val & SSI_RESETDONE)) {
- dev_err(&ssi->device, "SSI HW reset failed\n");
- pm_runtime_put_sync(ssi->device.parent);
- return -EIO;
- }
- /* Reseting GDD */
- writel_relaxed(SSI_SWRESET, omap_ssi->gdd + SSI_GDD_GRST_REG);
- /* Get FCK rate in KHz */
- omap_ssi->fck_rate = DIV_ROUND_CLOSEST(ssi_get_clk_rate(ssi), 1000);
- dev_dbg(&ssi->device, "SSI fck rate %lu KHz\n", omap_ssi->fck_rate);
- /* Set default PM settings */
- val = SSI_AUTOIDLE | SSI_SIDLEMODE_SMART | SSI_MIDLEMODE_SMART;
- writel_relaxed(val, omap_ssi->sys + SSI_SYSCONFIG_REG);
- omap_ssi->sysconfig = val;
- writel_relaxed(SSI_CLK_AUTOGATING_ON, omap_ssi->sys + SSI_GDD_GCR_REG);
- omap_ssi->gdd_gcr = SSI_CLK_AUTOGATING_ON;
- pm_runtime_put_sync(ssi->device.parent);
-
- return 0;
-}
-
-static void ssi_remove_controller(struct hsi_controller *ssi)
-{
- struct omap_ssi_controller *omap_ssi = hsi_controller_drvdata(ssi);
- int id = ssi->id;
- tasklet_kill(&omap_ssi->gdd_tasklet);
- hsi_unregister_controller(ssi);
- ida_simple_remove(&platform_omap_ssi_ida, id);
-}
-
-static inline int ssi_of_get_available_ports_count(const struct device_node *np)
-{
- struct device_node *child;
- int num = 0;
-
- for_each_available_child_of_node(np, child)
- if (of_device_is_compatible(child, "ti,omap3-ssi-port"))
- num++;
-
- return num;
-}
-
-static int ssi_remove_ports(struct device *dev, void *c)
-{
- struct platform_device *pdev = to_platform_device(dev);
-
- of_device_unregister(pdev);
-
- return 0;
-}
-
-static int __init ssi_probe(struct platform_device *pd)
-{
- struct platform_device *childpdev;
- struct device_node *np = pd->dev.of_node;
- struct device_node *child;
- struct hsi_controller *ssi;
- int err;
- int num_ports;
-
- if (!np) {
- dev_err(&pd->dev, "missing device tree data\n");
- return -EINVAL;
- }
-
- num_ports = ssi_of_get_available_ports_count(np);
-
- ssi = hsi_alloc_controller(num_ports, GFP_KERNEL);
- if (!ssi) {
- dev_err(&pd->dev, "No memory for controller\n");
- return -ENOMEM;
- }
-
- platform_set_drvdata(pd, ssi);
-
- err = ssi_add_controller(ssi, pd);
- if (err < 0)
- goto out1;
-
- pm_runtime_irq_safe(&pd->dev);
- pm_runtime_enable(&pd->dev);
-
- err = ssi_hw_init(ssi);
- if (err < 0)
- goto out2;
-#ifdef CONFIG_DEBUG_FS
- err = ssi_debug_add_ctrl(ssi);
- if (err < 0)
- goto out2;
-#endif
-
- for_each_available_child_of_node(np, child) {
- if (!of_device_is_compatible(child, "ti,omap3-ssi-port"))
- continue;
-
- childpdev = of_platform_device_create(child, NULL, &pd->dev);
- if (!childpdev) {
- err = -ENODEV;
- dev_err(&pd->dev, "failed to create ssi controller port\n");
- goto out3;
- }
- }
-
- dev_info(&pd->dev, "ssi controller %d initialized (%d ports)!\n",
- ssi->id, num_ports);
- return err;
-out3:
- device_for_each_child(&pd->dev, NULL, ssi_remove_ports);
-out2:
- ssi_remove_controller(ssi);
-out1:
- platform_set_drvdata(pd, NULL);
- pm_runtime_disable(&pd->dev);
-
- return err;
-}
-
-static int __exit ssi_remove(struct platform_device *pd)
-{
- struct hsi_controller *ssi = platform_get_drvdata(pd);
-
-#ifdef CONFIG_DEBUG_FS
- ssi_debug_remove_ctrl(ssi);
-#endif
- ssi_remove_controller(ssi);
- platform_set_drvdata(pd, NULL);
-
- pm_runtime_disable(&pd->dev);
-
- /* cleanup of of_platform_populate() call */
- device_for_each_child(&pd->dev, NULL, ssi_remove_ports);
-
- return 0;
-}
-
-#ifdef CONFIG_PM
-static int omap_ssi_runtime_suspend(struct device *dev)
-{
- struct hsi_controller *ssi = dev_get_drvdata(dev);
- struct omap_ssi_controller *omap_ssi = hsi_controller_drvdata(ssi);
-
- dev_dbg(dev, "runtime suspend!\n");
-
- if (omap_ssi->get_loss)
- omap_ssi->loss_count =
- omap_ssi->get_loss(ssi->device.parent);
-
- return 0;
-}
-
-static int omap_ssi_runtime_resume(struct device *dev)
-{
- struct hsi_controller *ssi = dev_get_drvdata(dev);
- struct omap_ssi_controller *omap_ssi = hsi_controller_drvdata(ssi);
-
- dev_dbg(dev, "runtime resume!\n");
-
- if ((omap_ssi->get_loss) && (omap_ssi->loss_count ==
- omap_ssi->get_loss(ssi->device.parent)))
- return 0;
-
- writel_relaxed(omap_ssi->gdd_gcr, omap_ssi->gdd + SSI_GDD_GCR_REG);
-
- return 0;
-}
-
-static const struct dev_pm_ops omap_ssi_pm_ops = {
- SET_RUNTIME_PM_OPS(omap_ssi_runtime_suspend, omap_ssi_runtime_resume,
- NULL)
-};
-
-#define DEV_PM_OPS (&omap_ssi_pm_ops)
-#else
-#define DEV_PM_OPS NULL
-#endif
-
-#ifdef CONFIG_OF
-static const struct of_device_id omap_ssi_of_match[] = {
- { .compatible = "ti,omap3-ssi", },
- {},
-};
-MODULE_DEVICE_TABLE(of, omap_ssi_of_match);
-#else
-#define omap_ssi_of_match NULL
-#endif
-
-static struct platform_driver ssi_pdriver = {
- .remove = __exit_p(ssi_remove),
- .driver = {
- .name = "omap_ssi",
- .pm = DEV_PM_OPS,
- .of_match_table = omap_ssi_of_match,
- },
-};
-
-module_platform_driver_probe(ssi_pdriver, ssi_probe);
-
-MODULE_ALIAS("platform:omap_ssi");
-MODULE_AUTHOR("Carlos Chinea <carlos.chinea@nokia.com>");
-MODULE_AUTHOR("Sebastian Reichel <sre@kernel.org>");
-MODULE_DESCRIPTION("Synchronous Serial Interface Driver");
-MODULE_LICENSE("GPL v2");