01f0e78e15
This patch creates platform_device entries for the Marvell mv64x60 I2C ports, based on information contained in device tree. This driver (like the other mv64x60 drivers) are unusual in that it works on both the MIPS and PowerPC architectures. Because of that, the drivers do not support the normal PowerPC of_platform_bus_type. They support platform_bus_type instead. Signed-off-by: Dale Farnsworth <dale@farnsworth.org> Acked-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Paul Mackerras <paulus@samba.org>
422 lines
8.7 KiB
C
422 lines
8.7 KiB
C
/*
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* Platform device setup for Marvell mv64360/mv64460 host bridges (Discovery)
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*
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* Author: Dale Farnsworth <dale@farnsworth.org>
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*
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* 2007 (c) MontaVista, Software, Inc. This file is licensed under
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* the terms of the GNU General Public License version 2. This program
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* is licensed "as is" without any warranty of any kind, whether express
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* or implied.
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*/
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#include <linux/stddef.h>
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#include <linux/kernel.h>
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#include <linux/init.h>
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#include <linux/mv643xx.h>
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#include <linux/platform_device.h>
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#include <asm/prom.h>
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/*
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* These functions provide the necessary setup for the mv64x60 drivers.
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* These drivers are unusual in that they work on both the MIPS and PowerPC
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* architectures. Because of that, the drivers do not support the normal
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* PowerPC of_platform_bus_type. They support platform_bus_type instead.
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*/
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/*
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* Create MPSC platform devices
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*/
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static int __init mv64x60_mpsc_register_shared_pdev(struct device_node *np)
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{
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struct platform_device *pdev;
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struct resource r[2];
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struct mpsc_shared_pdata pdata;
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const phandle *ph;
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struct device_node *mpscrouting, *mpscintr;
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int err;
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ph = of_get_property(np, "mpscrouting", NULL);
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mpscrouting = of_find_node_by_phandle(*ph);
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if (!mpscrouting)
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return -ENODEV;
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err = of_address_to_resource(mpscrouting, 0, &r[0]);
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of_node_put(mpscrouting);
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if (err)
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return err;
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ph = of_get_property(np, "mpscintr", NULL);
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mpscintr = of_find_node_by_phandle(*ph);
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if (!mpscintr)
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return -ENODEV;
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err = of_address_to_resource(mpscintr, 0, &r[1]);
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of_node_put(mpscintr);
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if (err)
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return err;
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memset(&pdata, 0, sizeof(pdata));
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pdev = platform_device_alloc(MPSC_SHARED_NAME, 0);
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if (!pdev)
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return -ENOMEM;
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err = platform_device_add_resources(pdev, r, 2);
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if (err)
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goto error;
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err = platform_device_add_data(pdev, &pdata, sizeof(pdata));
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if (err)
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goto error;
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err = platform_device_add(pdev);
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if (err)
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goto error;
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return 0;
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error:
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platform_device_put(pdev);
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return err;
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}
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static int __init mv64x60_mpsc_device_setup(struct device_node *np, int id)
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{
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struct resource r[5];
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struct mpsc_pdata pdata;
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struct platform_device *pdev;
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const unsigned int *prop;
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const phandle *ph;
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struct device_node *sdma, *brg;
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int err;
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int port_number;
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/* only register the shared platform device the first time through */
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if (id == 0 && (err = mv64x60_mpsc_register_shared_pdev(np)))
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return err;
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memset(r, 0, sizeof(r));
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err = of_address_to_resource(np, 0, &r[0]);
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if (err)
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return err;
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of_irq_to_resource(np, 0, &r[4]);
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ph = of_get_property(np, "sdma", NULL);
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sdma = of_find_node_by_phandle(*ph);
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if (!sdma)
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return -ENODEV;
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of_irq_to_resource(sdma, 0, &r[3]);
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err = of_address_to_resource(sdma, 0, &r[1]);
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of_node_put(sdma);
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if (err)
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return err;
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ph = of_get_property(np, "brg", NULL);
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brg = of_find_node_by_phandle(*ph);
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if (!brg)
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return -ENODEV;
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err = of_address_to_resource(brg, 0, &r[2]);
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of_node_put(brg);
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if (err)
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return err;
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prop = of_get_property(np, "block-index", NULL);
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if (!prop)
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return -ENODEV;
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port_number = *(int *)prop;
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memset(&pdata, 0, sizeof(pdata));
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pdata.cache_mgmt = 1; /* All current revs need this set */
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prop = of_get_property(np, "max_idle", NULL);
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if (prop)
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pdata.max_idle = *prop;
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prop = of_get_property(brg, "current-speed", NULL);
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if (prop)
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pdata.default_baud = *prop;
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/* Default is 8 bits, no parity, no flow control */
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pdata.default_bits = 8;
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pdata.default_parity = 'n';
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pdata.default_flow = 'n';
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prop = of_get_property(np, "chr_1", NULL);
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if (prop)
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pdata.chr_1_val = *prop;
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prop = of_get_property(np, "chr_2", NULL);
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if (prop)
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pdata.chr_2_val = *prop;
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prop = of_get_property(np, "chr_10", NULL);
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if (prop)
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pdata.chr_10_val = *prop;
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prop = of_get_property(np, "mpcr", NULL);
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if (prop)
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pdata.mpcr_val = *prop;
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prop = of_get_property(brg, "bcr", NULL);
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if (prop)
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pdata.bcr_val = *prop;
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pdata.brg_can_tune = 1; /* All current revs need this set */
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prop = of_get_property(brg, "clock-src", NULL);
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if (prop)
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pdata.brg_clk_src = *prop;
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prop = of_get_property(brg, "clock-frequency", NULL);
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if (prop)
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pdata.brg_clk_freq = *prop;
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pdev = platform_device_alloc(MPSC_CTLR_NAME, port_number);
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if (!pdev)
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return -ENOMEM;
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err = platform_device_add_resources(pdev, r, 5);
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if (err)
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goto error;
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err = platform_device_add_data(pdev, &pdata, sizeof(pdata));
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if (err)
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goto error;
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err = platform_device_add(pdev);
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if (err)
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goto error;
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return 0;
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error:
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platform_device_put(pdev);
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return err;
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}
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/*
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* Create mv64x60_eth platform devices
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*/
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static int __init eth_register_shared_pdev(struct device_node *np)
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{
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struct platform_device *pdev;
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struct resource r[1];
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int err;
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np = of_get_parent(np);
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if (!np)
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return -ENODEV;
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err = of_address_to_resource(np, 0, &r[0]);
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of_node_put(np);
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if (err)
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return err;
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pdev = platform_device_register_simple(MV643XX_ETH_SHARED_NAME, 0,
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r, 1);
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if (IS_ERR(pdev))
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return PTR_ERR(pdev);
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return 0;
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}
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static int __init mv64x60_eth_device_setup(struct device_node *np, int id)
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{
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struct resource r[1];
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struct mv643xx_eth_platform_data pdata;
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struct platform_device *pdev;
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struct device_node *phy;
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const u8 *mac_addr;
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const int *prop;
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const phandle *ph;
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int err;
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/* only register the shared platform device the first time through */
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if (id == 0 && (err = eth_register_shared_pdev(np)))
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return err;;
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memset(r, 0, sizeof(r));
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of_irq_to_resource(np, 0, &r[0]);
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memset(&pdata, 0, sizeof(pdata));
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prop = of_get_property(np, "block-index", NULL);
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if (!prop)
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return -ENODEV;
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pdata.port_number = *prop;
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mac_addr = of_get_mac_address(np);
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if (mac_addr)
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memcpy(pdata.mac_addr, mac_addr, 6);
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prop = of_get_property(np, "speed", NULL);
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if (prop)
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pdata.speed = *prop;
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prop = of_get_property(np, "tx_queue_size", NULL);
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if (prop)
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pdata.tx_queue_size = *prop;
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prop = of_get_property(np, "rx_queue_size", NULL);
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if (prop)
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pdata.rx_queue_size = *prop;
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prop = of_get_property(np, "tx_sram_addr", NULL);
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if (prop)
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pdata.tx_sram_addr = *prop;
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prop = of_get_property(np, "tx_sram_size", NULL);
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if (prop)
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pdata.tx_sram_size = *prop;
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prop = of_get_property(np, "rx_sram_addr", NULL);
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if (prop)
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pdata.rx_sram_addr = *prop;
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prop = of_get_property(np, "rx_sram_size", NULL);
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if (prop)
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pdata.rx_sram_size = *prop;
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ph = of_get_property(np, "phy", NULL);
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if (!ph)
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return -ENODEV;
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phy = of_find_node_by_phandle(*ph);
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if (phy == NULL)
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return -ENODEV;
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prop = of_get_property(phy, "reg", NULL);
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if (prop) {
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pdata.force_phy_addr = 1;
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pdata.phy_addr = *prop;
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}
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of_node_put(phy);
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pdev = platform_device_alloc(MV643XX_ETH_NAME, pdata.port_number);
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if (!pdev)
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return -ENOMEM;
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err = platform_device_add_resources(pdev, r, 1);
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if (err)
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goto error;
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err = platform_device_add_data(pdev, &pdata, sizeof(pdata));
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if (err)
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goto error;
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err = platform_device_add(pdev);
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if (err)
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goto error;
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return 0;
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error:
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platform_device_put(pdev);
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return err;
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}
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/*
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* Create mv64x60_i2c platform devices
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*/
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static int __init mv64x60_i2c_device_setup(struct device_node *np, int id)
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{
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struct resource r[2];
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struct platform_device *pdev;
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struct mv64xxx_i2c_pdata pdata;
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const unsigned int *prop;
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int err;
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memset(r, 0, sizeof(r));
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err = of_address_to_resource(np, 0, &r[0]);
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if (err)
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return err;
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of_irq_to_resource(np, 0, &r[1]);
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memset(&pdata, 0, sizeof(pdata));
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prop = of_get_property(np, "freq_m", NULL);
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if (!prop)
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return -ENODEV;
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pdata.freq_m = *prop;
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prop = of_get_property(np, "freq_n", NULL);
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if (!prop)
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return -ENODEV;
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pdata.freq_n = *prop;
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prop = of_get_property(np, "timeout", NULL);
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if (prop)
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pdata.timeout = *prop;
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else
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pdata.timeout = 1000; /* 1 second */
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prop = of_get_property(np, "retries", NULL);
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if (prop)
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pdata.retries = *prop;
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else
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pdata.retries = 1;
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pdev = platform_device_alloc(MV64XXX_I2C_CTLR_NAME, id);
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if (!pdev)
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return -ENOMEM;
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err = platform_device_add_resources(pdev, r, 2);
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if (err)
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goto error;
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err = platform_device_add_data(pdev, &pdata, sizeof(pdata));
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if (err)
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goto error;
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err = platform_device_add(pdev);
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if (err)
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goto error;
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return 0;
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error:
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platform_device_put(pdev);
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return err;
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}
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static int __init mv64x60_device_setup(void)
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{
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struct device_node *np = NULL;
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int id;
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int err;
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for (id = 0;
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(np = of_find_compatible_node(np, "serial", "marvell,mpsc")); id++)
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if ((err = mv64x60_mpsc_device_setup(np, id)))
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goto error;
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for (id = 0;
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(np = of_find_compatible_node(np, "network",
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"marvell,mv64x60-eth"));
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id++)
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if ((err = mv64x60_eth_device_setup(np, id)))
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goto error;
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for (id = 0;
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(np = of_find_compatible_node(np, "i2c", "marvell,mv64x60-i2c"));
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id++)
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if ((err = mv64x60_i2c_device_setup(np, id)))
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goto error;
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return 0;
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error:
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of_node_put(np);
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return err;
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}
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arch_initcall(mv64x60_device_setup);
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