spi: reorganize drivers
Sort the SPI makefile and enforce the naming convention spi_*.c for
spi drivers.
This change also rolls the contents of atmel_spi.h into the .c file
since there is only one user of that particular include file.
v2: - Use 'spi-' prefix instead of 'spi_' to match what seems to be
be the predominant pattern for subsystem prefixes.
- Clean up filenames in Kconfig and header comment blocks
Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
Acked-by: Wolfram Sang <w.sang@pengutronix.de>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
diff --git a/drivers/spi/spi-dw-mmio.c b/drivers/spi/spi-dw-mmio.c
new file mode 100644
index 0000000..34eb665
--- /dev/null
+++ b/drivers/spi/spi-dw-mmio.c
@@ -0,0 +1,151 @@
+/*
+ * Memory-mapped interface driver for DW SPI Core
+ *
+ * Copyright (c) 2010, Octasic semiconductor.
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU General Public License,
+ * version 2, as published by the Free Software Foundation.
+ */
+
+#include <linux/clk.h>
+#include <linux/err.h>
+#include <linux/interrupt.h>
+#include <linux/platform_device.h>
+#include <linux/slab.h>
+#include <linux/spi/spi.h>
+#include <linux/scatterlist.h>
+
+#include "spi-dw.h"
+
+#define DRIVER_NAME "dw_spi_mmio"
+
+struct dw_spi_mmio {
+ struct dw_spi dws;
+ struct clk *clk;
+};
+
+static int __devinit dw_spi_mmio_probe(struct platform_device *pdev)
+{
+ struct dw_spi_mmio *dwsmmio;
+ struct dw_spi *dws;
+ struct resource *mem, *ioarea;
+ int ret;
+
+ dwsmmio = kzalloc(sizeof(struct dw_spi_mmio), GFP_KERNEL);
+ if (!dwsmmio) {
+ ret = -ENOMEM;
+ goto err_end;
+ }
+
+ dws = &dwsmmio->dws;
+
+ /* Get basic io resource and map it */
+ mem = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+ if (!mem) {
+ dev_err(&pdev->dev, "no mem resource?\n");
+ ret = -EINVAL;
+ goto err_kfree;
+ }
+
+ ioarea = request_mem_region(mem->start, resource_size(mem),
+ pdev->name);
+ if (!ioarea) {
+ dev_err(&pdev->dev, "SPI region already claimed\n");
+ ret = -EBUSY;
+ goto err_kfree;
+ }
+
+ dws->regs = ioremap_nocache(mem->start, resource_size(mem));
+ if (!dws->regs) {
+ dev_err(&pdev->dev, "SPI region already mapped\n");
+ ret = -ENOMEM;
+ goto err_release_reg;
+ }
+
+ dws->irq = platform_get_irq(pdev, 0);
+ if (dws->irq < 0) {
+ dev_err(&pdev->dev, "no irq resource?\n");
+ ret = dws->irq; /* -ENXIO */
+ goto err_unmap;
+ }
+
+ dwsmmio->clk = clk_get(&pdev->dev, NULL);
+ if (IS_ERR(dwsmmio->clk)) {
+ ret = PTR_ERR(dwsmmio->clk);
+ goto err_irq;
+ }
+ clk_enable(dwsmmio->clk);
+
+ dws->parent_dev = &pdev->dev;
+ dws->bus_num = 0;
+ dws->num_cs = 4;
+ dws->max_freq = clk_get_rate(dwsmmio->clk);
+
+ ret = dw_spi_add_host(dws);
+ if (ret)
+ goto err_clk;
+
+ platform_set_drvdata(pdev, dwsmmio);
+ return 0;
+
+err_clk:
+ clk_disable(dwsmmio->clk);
+ clk_put(dwsmmio->clk);
+ dwsmmio->clk = NULL;
+err_irq:
+ free_irq(dws->irq, dws);
+err_unmap:
+ iounmap(dws->regs);
+err_release_reg:
+ release_mem_region(mem->start, resource_size(mem));
+err_kfree:
+ kfree(dwsmmio);
+err_end:
+ return ret;
+}
+
+static int __devexit dw_spi_mmio_remove(struct platform_device *pdev)
+{
+ struct dw_spi_mmio *dwsmmio = platform_get_drvdata(pdev);
+ struct resource *mem;
+
+ platform_set_drvdata(pdev, NULL);
+
+ clk_disable(dwsmmio->clk);
+ clk_put(dwsmmio->clk);
+ dwsmmio->clk = NULL;
+
+ free_irq(dwsmmio->dws.irq, &dwsmmio->dws);
+ dw_spi_remove_host(&dwsmmio->dws);
+ iounmap(dwsmmio->dws.regs);
+ kfree(dwsmmio);
+
+ mem = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+ release_mem_region(mem->start, resource_size(mem));
+ return 0;
+}
+
+static struct platform_driver dw_spi_mmio_driver = {
+ .remove = __devexit_p(dw_spi_mmio_remove),
+ .driver = {
+ .name = DRIVER_NAME,
+ .owner = THIS_MODULE,
+ },
+};
+
+static int __init dw_spi_mmio_init(void)
+{
+ return platform_driver_probe(&dw_spi_mmio_driver, dw_spi_mmio_probe);
+}
+module_init(dw_spi_mmio_init);
+
+static void __exit dw_spi_mmio_exit(void)
+{
+ platform_driver_unregister(&dw_spi_mmio_driver);
+}
+module_exit(dw_spi_mmio_exit);
+
+MODULE_AUTHOR("Jean-Hugues Deschenes <jean-hugues.deschenes@octasic.com>");
+MODULE_DESCRIPTION("Memory-mapped I/O interface driver for DW SPI Core");
+MODULE_LICENSE("GPL v2");