[POWERPC] Create Marvell mv64x60 MPSC (serial) platform_data (52d3aff9) · Commits · e / devices / android_kernel_xiaomi_markw

arch/powerpc/platforms/embedded6xx/Kconfig

+3 −0

Original line number	Diff line number	Diff line
		@@ -46,6 +46,9 @@ config MPC10X_BRIDGE
		select PPC_INDIRECT_PCI
		default y

		config MV64X60
		bool

		config MPC10X_OPENPIC
		bool
		depends on LINKSTATION

arch/powerpc/sysdev/Makefile

+1 −1

Original line number	Diff line number	Diff line
		@@ -16,7 +16,7 @@ obj-$(CONFIG_FSL_SOC) += fsl_soc.o
		obj-$(CONFIG_FSL_PCIE) += fsl_pcie.o
		obj-$(CONFIG_TSI108_BRIDGE) += tsi108_pci.o tsi108_dev.o
		obj-$(CONFIG_QUICC_ENGINE) += qe_lib/
		obj-$(CONFIG_MV64X60) += mv64x60_pic.o
		obj-$(CONFIG_MV64X60) += mv64x60_pic.o mv64x60_dev.o

		# contains only the suspend handler for time
		obj-$(CONFIG_PM) += timer.o

arch/powerpc/sysdev/mv64x60_dev.c

0 → 100644

+221 −0

Original line number	Diff line number	Diff line
		/*
		* Platform device setup for Marvell mv64360/mv64460 host bridges (Discovery)
		*
		* Author: Dale Farnsworth <dale@farnsworth.org>
		*
		* 2007 (c) MontaVista, Software, Inc. This file is licensed under
		* the terms of the GNU General Public License version 2. This program
		* is licensed "as is" without any warranty of any kind, whether express
		* or implied.
		*/

		#include <linux/stddef.h>
		#include <linux/kernel.h>
		#include <linux/init.h>
		#include <linux/mv643xx.h>
		#include <linux/platform_device.h>

		#include <asm/prom.h>

		/*
		* These functions provide the necessary setup for the mv64x60 drivers.
		* These drivers are unusual in that they work 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.
		*/

		/*
		* Create MPSC platform devices
		*/
		static int __init mv64x60_mpsc_register_shared_pdev(struct device_node *np)
		{
		struct platform_device *pdev;
		struct resource r[2];
		struct mpsc_shared_pdata pdata;
		const phandle *ph;
		struct device_node mpscrouting, mpscintr;
		int err;

		ph = of_get_property(np, "mpscrouting", NULL);
		mpscrouting = of_find_node_by_phandle(*ph);
		if (!mpscrouting)
		return -ENODEV;

		err = of_address_to_resource(mpscrouting, 0, &r[0]);
		of_node_put(mpscrouting);
		if (err)
		return err;

		ph = of_get_property(np, "mpscintr", NULL);
		mpscintr = of_find_node_by_phandle(*ph);
		if (!mpscintr)
		return -ENODEV;

		err = of_address_to_resource(mpscintr, 0, &r[1]);
		of_node_put(mpscintr);
		if (err)
		return err;

		memset(&pdata, 0, sizeof(pdata));

		pdev = platform_device_alloc(MPSC_SHARED_NAME, 0);
		if (!pdev)
		return -ENOMEM;

		err = platform_device_add_resources(pdev, r, 2);
		if (err)
		goto error;

		err = platform_device_add_data(pdev, &pdata, sizeof(pdata));
		if (err)
		goto error;

		err = platform_device_add(pdev);
		if (err)
		goto error;

		return 0;

		error:
		platform_device_put(pdev);
		return err;
		}


		static int __init mv64x60_mpsc_device_setup(struct device_node *np, int id)
		{
		struct resource r[5];
		struct mpsc_pdata pdata;
		struct platform_device *pdev;
		const unsigned int *prop;
		const phandle *ph;
		struct device_node sdma, brg;
		int err;
		int port_number;

		/* only register the shared platform device the first time through */
		if (id == 0 && (err = mv64x60_mpsc_register_shared_pdev(np)))
		return err;

		memset(r, 0, sizeof(r));

		err = of_address_to_resource(np, 0, &r[0]);
		if (err)
		return err;

		of_irq_to_resource(np, 0, &r[4]);

		ph = of_get_property(np, "sdma", NULL);
		sdma = of_find_node_by_phandle(*ph);
		if (!sdma)
		return -ENODEV;

		of_irq_to_resource(sdma, 0, &r[3]);
		err = of_address_to_resource(sdma, 0, &r[1]);
		of_node_put(sdma);
		if (err)
		return err;

		ph = of_get_property(np, "brg", NULL);
		brg = of_find_node_by_phandle(*ph);
		if (!brg)
		return -ENODEV;

		err = of_address_to_resource(brg, 0, &r[2]);
		of_node_put(brg);
		if (err)
		return err;

		prop = of_get_property(np, "block-index", NULL);
		if (!prop)
		return -ENODEV;
		port_number = (int )prop;

		memset(&pdata, 0, sizeof(pdata));

		pdata.cache_mgmt = 1; /* All current revs need this set */

		prop = of_get_property(np, "max_idle", NULL);
		if (prop)
		pdata.max_idle = *prop;

		prop = of_get_property(brg, "current-speed", NULL);
		if (prop)
		pdata.default_baud = *prop;

		/* Default is 8 bits, no parity, no flow control */
		pdata.default_bits = 8;
		pdata.default_parity = 'n';
		pdata.default_flow = 'n';

		prop = of_get_property(np, "chr_1", NULL);
		if (prop)
		pdata.chr_1_val = *prop;

		prop = of_get_property(np, "chr_2", NULL);
		if (prop)
		pdata.chr_2_val = *prop;

		prop = of_get_property(np, "chr_10", NULL);
		if (prop)
		pdata.chr_10_val = *prop;

		prop = of_get_property(np, "mpcr", NULL);
		if (prop)
		pdata.mpcr_val = *prop;

		prop = of_get_property(brg, "bcr", NULL);
		if (prop)
		pdata.bcr_val = *prop;

		pdata.brg_can_tune = 1; /* All current revs need this set */

		prop = of_get_property(brg, "clock-src", NULL);
		if (prop)
		pdata.brg_clk_src = *prop;

		prop = of_get_property(brg, "clock-frequency", NULL);
		if (prop)
		pdata.brg_clk_freq = *prop;

		pdev = platform_device_alloc(MPSC_CTLR_NAME, port_number);
		if (!pdev)
		return -ENOMEM;

		err = platform_device_add_resources(pdev, r, 5);
		if (err)
		goto error;

		err = platform_device_add_data(pdev, &pdata, sizeof(pdata));
		if (err)
		goto error;

		err = platform_device_add(pdev);
		if (err)
		goto error;

		return 0;

		error:
		platform_device_put(pdev);
		return err;
		}

		static int __init mv64x60_device_setup(void)
		{
		struct device_node *np = NULL;
		int id;
		int err;

		for (id = 0;
		(np = of_find_compatible_node(np, "serial", "marvell,mpsc")); id++)
		if ((err = mv64x60_mpsc_device_setup(np, id)))
		goto error;

		return 0;

		error:
		of_node_put(np);
		return err;
		}
		arch_initcall(mv64x60_device_setup);