diff options
| -rw-r--r-- | drivers/staging/most/dim2/Kconfig | 2 | ||||
| -rw-r--r-- | drivers/staging/most/dim2/dim2.c | 224 | ||||
| -rw-r--r-- | drivers/staging/most/dim2/dim2.h | 22 |
3 files changed, 196 insertions, 52 deletions
diff --git a/drivers/staging/most/dim2/Kconfig b/drivers/staging/most/dim2/Kconfig index e39c4e525cac..5aeef22c3cba 100644 --- a/drivers/staging/most/dim2/Kconfig +++ b/drivers/staging/most/dim2/Kconfig @@ -4,7 +4,7 @@ config MOST_DIM2 tristate "DIM2" - depends on HAS_IOMEM + depends on HAS_IOMEM && OF ---help--- Say Y here if you want to connect via MediaLB to network transceiver. diff --git a/drivers/staging/most/dim2/dim2.c b/drivers/staging/most/dim2/dim2.c index e60efa00312b..5e3accb6961f 100644 --- a/drivers/staging/most/dim2/dim2.c +++ b/drivers/staging/most/dim2/dim2.c @@ -8,6 +8,7 @@ #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt #include <linux/module.h> +#include <linux/of_platform.h> #include <linux/printk.h> #include <linux/kernel.h> #include <linux/init.h> @@ -15,13 +16,13 @@ #include <linux/interrupt.h> #include <linux/slab.h> #include <linux/io.h> +#include <linux/clk.h> #include <linux/dma-mapping.h> #include <linux/sched.h> #include <linux/kthread.h> #include "most/core.h" #include "hal.h" -#include "dim2.h" #include "errors.h" #include "sysfs.h" @@ -88,6 +89,9 @@ struct dim2_hdm { struct most_interface most_iface; char name[16 + sizeof "dim2-"]; void __iomem *io_base; + u8 clk_speed; + struct clk *clk; + struct clk *clk_pll; struct task_struct *netinfo_task; wait_queue_head_t netinfo_waitq; int deliver_netinfo; @@ -97,6 +101,12 @@ struct dim2_hdm { struct medialb_bus bus; void (*on_netinfo)(struct most_interface *most_iface, unsigned char link_state, unsigned char *addrs); + void (*disable_platform)(struct platform_device *); +}; + +struct dim2_platform_data { + int (*enable)(struct platform_device *); + void (*disable)(struct platform_device *); }; #define iface_to_hdm(iface) container_of(iface, struct dim2_hdm, most_iface) @@ -681,6 +691,8 @@ static void dma_free(struct mbo *mbo, u32 size) dma_free_coherent(NULL, size, mbo->virt_address, mbo->bus_address); } +static const struct of_device_id dim2_of_match[]; + /* * dim2_probe - dim2 probe handler * @pdev: platform device structure @@ -690,13 +702,16 @@ static void dma_free(struct mbo *mbo, u32 size) */ static int dim2_probe(struct platform_device *pdev) { - struct dim2_platform_data *pdata = pdev->dev.platform_data; + const struct dim2_platform_data *pdata; + const struct of_device_id *of_id; struct dim2_hdm *dev; struct resource *res; int ret, i; u8 hal_ret; int irq; + enum { MLB_INT_IDX, AHB0_INT_IDX }; + dev = devm_kzalloc(&pdev->dev, sizeof(*dev), GFP_KERNEL); if (!dev) return -ENOMEM; @@ -704,29 +719,31 @@ static int dim2_probe(struct platform_device *pdev) dev->atx_idx = -1; platform_set_drvdata(pdev, dev); + + dev->clk_speed = CLK_4096FS; + res = platform_get_resource(pdev, IORESOURCE_MEM, 0); dev->io_base = devm_ioremap_resource(&pdev->dev, res); if (IS_ERR(dev->io_base)) return PTR_ERR(dev->io_base); - if (!pdata) { - dev_err(&pdev->dev, "missing platform data\n"); - return -EINVAL; - } - - ret = pdata->init ? pdata->init(pdata, dev->io_base) : 0; + of_id = of_match_node(dim2_of_match, pdev->dev.of_node); + pdata = of_id->data; + ret = pdata && pdata->enable ? pdata->enable(pdev) : 0; if (ret) return ret; + dev->disable_platform = pdata ? pdata->disable : 0; + dev_info(&pdev->dev, "sync: num of frames per sub-buffer: %u\n", fcnt); - hal_ret = dim_startup(dev->io_base, pdata->clk_speed, fcnt); + hal_ret = dim_startup(dev->io_base, dev->clk_speed, fcnt); if (hal_ret != DIM_NO_ERROR) { dev_err(&pdev->dev, "dim_startup failed: %d\n", hal_ret); ret = -ENODEV; - goto err_bsp_destroy; + goto err_disable_platform; } - irq = platform_get_irq(pdev, 0); + irq = platform_get_irq(pdev, AHB0_INT_IDX); if (irq < 0) { dev_err(&pdev->dev, "failed to get ahb0_int irq: %d\n", irq); ret = irq; @@ -740,7 +757,7 @@ static int dim2_probe(struct platform_device *pdev) goto err_shutdown_dim; } - irq = platform_get_irq(pdev, 1); + irq = platform_get_irq(pdev, MLB_INT_IDX); if (irq < 0) { dev_err(&pdev->dev, "failed to get mlb_int irq: %d\n", irq); ret = irq; @@ -828,9 +845,9 @@ err_stop_thread: kthread_stop(dev->netinfo_task); err_shutdown_dim: dim_shutdown(); -err_bsp_destroy: - if (pdata && pdata->destroy) - pdata->destroy(pdata); +err_disable_platform: + if (dev->disable_platform) + dev->disable_platform(pdev); return ret; } @@ -844,7 +861,6 @@ err_bsp_destroy: static int dim2_remove(struct platform_device *pdev) { struct dim2_hdm *dev = platform_get_drvdata(pdev); - struct dim2_platform_data *pdata = pdev->dev.platform_data; unsigned long flags; dim2_sysfs_destroy(&dev->dev); @@ -855,37 +871,187 @@ static int dim2_remove(struct platform_device *pdev) dim_shutdown(); spin_unlock_irqrestore(&dim_lock, flags); - if (pdata && pdata->destroy) - pdata->destroy(pdata); + if (dev->disable_platform) + dev->disable_platform(pdev); + + return 0; +} + +/* platform specific functions [[ */ + +static int fsl_mx6_enable(struct platform_device *pdev) +{ + struct dim2_hdm *dev = platform_get_drvdata(pdev); + int ret; + + dev->clk = devm_clk_get(&pdev->dev, "mlb"); + if (IS_ERR_OR_NULL(dev->clk)) { + dev_err(&pdev->dev, "unable to get mlb clock\n"); + return -EFAULT; + } + + ret = clk_prepare_enable(dev->clk); + if (ret) { + dev_err(&pdev->dev, "%s\n", "clk_prepare_enable failed"); + return ret; + } + + if (dev->clk_speed >= CLK_2048FS) { + /* enable pll */ + dev->clk_pll = devm_clk_get(&pdev->dev, "pll8_mlb"); + if (IS_ERR_OR_NULL(dev->clk_pll)) { + dev_err(&pdev->dev, "unable to get mlb pll clock\n"); + clk_disable_unprepare(dev->clk); + return -EFAULT; + } + + writel(0x888, dev->io_base + 0x38); + clk_prepare_enable(dev->clk_pll); + } + + return 0; +} + +static void fsl_mx6_disable(struct platform_device *pdev) +{ + struct dim2_hdm *dev = platform_get_drvdata(pdev); + + if (dev->clk_speed >= CLK_2048FS) + clk_disable_unprepare(dev->clk_pll); + + clk_disable_unprepare(dev->clk); +} + +static int rcar_h2_enable(struct platform_device *pdev) +{ + struct dim2_hdm *dev = platform_get_drvdata(pdev); + int ret; + + dev->clk = devm_clk_get(&pdev->dev, NULL); + if (IS_ERR(dev->clk)) { + dev_err(&pdev->dev, "cannot get clock\n"); + return PTR_ERR(dev->clk); + } + + ret = clk_prepare_enable(dev->clk); + if (ret) { + dev_err(&pdev->dev, "%s\n", "clk_prepare_enable failed"); + return ret; + } + + if (dev->clk_speed >= CLK_2048FS) { + /* enable MLP pll and LVDS drivers */ + writel(0x03, dev->io_base + 0x600); + /* set bias */ + writel(0x888, dev->io_base + 0x38); + } else { + /* PLL */ + writel(0x04, dev->io_base + 0x600); + } + - /* - * break link to local platform_device_id struct - * to prevent crash by unload platform device module - */ - pdev->id_entry = NULL; + /* BBCR = 0b11 */ + writel(0x03, dev->io_base + 0x500); + writel(0x0002FF02, dev->io_base + 0x508); return 0; } -static const struct platform_device_id dim2_id[] = { - { "medialb_dim2" }, - { }, /* Terminating entry */ +static void rcar_h2_disable(struct platform_device *pdev) +{ + struct dim2_hdm *dev = platform_get_drvdata(pdev); + + clk_disable_unprepare(dev->clk); + + /* disable PLLs and LVDS drivers */ + writel(0x0, dev->io_base + 0x600); +} + +static int rcar_m3_enable(struct platform_device *pdev) +{ + struct dim2_hdm *dev = platform_get_drvdata(pdev); + u32 enable_512fs = dev->clk_speed == CLK_512FS; + int ret; + + dev->clk = devm_clk_get(&pdev->dev, NULL); + if (IS_ERR(dev->clk)) { + dev_err(&pdev->dev, "cannot get clock\n"); + return PTR_ERR(dev->clk); + } + + ret = clk_prepare_enable(dev->clk); + if (ret) { + dev_err(&pdev->dev, "%s\n", "clk_prepare_enable failed"); + return ret; + } + + /* PLL */ + writel(0x04, dev->io_base + 0x600); + + writel(enable_512fs, dev->io_base + 0x604); + + /* BBCR = 0b11 */ + writel(0x03, dev->io_base + 0x500); + writel(0x0002FF02, dev->io_base + 0x508); + + return 0; +} + +static void rcar_m3_disable(struct platform_device *pdev) +{ + struct dim2_hdm *dev = platform_get_drvdata(pdev); + + clk_disable_unprepare(dev->clk); + + /* disable PLLs and LVDS drivers */ + writel(0x0, dev->io_base + 0x600); +} + +/* ]] platform specific functions */ + +enum dim2_platforms { FSL_MX6, RCAR_H2, RCAR_M3 }; + +static struct dim2_platform_data plat_data[] = { + [FSL_MX6] = { .enable = fsl_mx6_enable, .disable = fsl_mx6_disable }, + [RCAR_H2] = { .enable = rcar_h2_enable, .disable = rcar_h2_disable }, + [RCAR_M3] = { .enable = rcar_m3_enable, .disable = rcar_m3_disable }, +}; + +static const struct of_device_id dim2_of_match[] = { + { + .compatible = "fsl,imx6q-mlb150", + .data = plat_data + FSL_MX6 + }, + { + .compatible = "renesas,mlp", + .data = plat_data + RCAR_H2 + }, + { + .compatible = "rcar,medialb-dim2", + .data = plat_data + RCAR_M3 + }, + { + .compatible = "xlnx,axi4-os62420_3pin-1.00.a", + }, + { + .compatible = "xlnx,axi4-os62420_6pin-1.00.a", + }, + {}, }; -MODULE_DEVICE_TABLE(platform, dim2_id); +MODULE_DEVICE_TABLE(of, dim2_of_match); static struct platform_driver dim2_driver = { .probe = dim2_probe, .remove = dim2_remove, - .id_table = dim2_id, .driver = { .name = "hdm_dim2", + .of_match_table = dim2_of_match, }, }; module_platform_driver(dim2_driver); -MODULE_AUTHOR("Jain Roy Ambi <JainRoy.Ambi@microchip.com>"); MODULE_AUTHOR("Andrey Shvetsov <andrey.shvetsov@k2l.de>"); MODULE_DESCRIPTION("MediaLB DIM2 Hardware Dependent Module"); MODULE_LICENSE("GPL"); diff --git a/drivers/staging/most/dim2/dim2.h b/drivers/staging/most/dim2/dim2.h deleted file mode 100644 index 999d4d4a2ba0..000000000000 --- a/drivers/staging/most/dim2/dim2.h +++ /dev/null @@ -1,22 +0,0 @@ -// SPDX-License-Identifier: GPL-2.0 -/* - * dim2.h - MediaLB DIM2 HDM Header - * - * Copyright (C) 2015, Microchip Technology Germany II GmbH & Co. KG - */ - -#ifndef DIM2_HDM_H -#define DIM2_HDM_H - -#include <linux/types.h> - -struct device; - -/* platform dependent data for dim2 interface */ -struct dim2_platform_data { - int (*init)(struct dim2_platform_data *pd, void __iomem *io_base); - void (*destroy)(struct dim2_platform_data *pd); - u8 clk_speed; -}; - -#endif /* DIM2_HDM_H */ |