diff options
Diffstat (limited to 'recipes-kernel/most/files/0007-dim2-use-device-tree.patch')
| -rw-r--r-- | recipes-kernel/most/files/0007-dim2-use-device-tree.patch | 378 |
1 files changed, 378 insertions, 0 deletions
diff --git a/recipes-kernel/most/files/0007-dim2-use-device-tree.patch b/recipes-kernel/most/files/0007-dim2-use-device-tree.patch new file mode 100644 index 000000000..679fab79c --- /dev/null +++ b/recipes-kernel/most/files/0007-dim2-use-device-tree.patch @@ -0,0 +1,378 @@ +From 8e16207392cd715ea88f6780981a3d55ab005588 Mon Sep 17 00:00:00 2001 +From: Andrey Shvetsov <andrey.shvetsov@k2l.de> +Date: Mon, 12 Feb 2018 12:23:37 +0100 +Subject: [PATCH] staging: most: dim2: use device tree + +Current dim2 driver expects the existence of a platform driver that +implements the platform specific initialization and delivery of the irq +numbers. + +This patch integrates the device tree activity and platform specific +code into the driver. + +Signed-off-by: Andrey Shvetsov <andrey.shvetsov@k2l.de> +--- + hdm-dim2/dim2_hdm.c | 222 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++----------------------------- + hdm-dim2/dim2_hdm.h | 28 ---------------------------- + hdm-dim2/platform/dim2_arwen_mlb3.c | 165 --------------------------------------------------------------------------------------------------------------------------------------------------------------------- + hdm-dim2/platform/dim2_arwen_mlb6.c | 169 ------------------------------------------------------------------------------------------------------------------------------------------------------------------------- + hdm-dim2/platform/dim2_h2_dt.c | 227 ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- + hdm-dim2/platform/dim2_mx6q.c | 192 ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ + hdm-dim2/platform/dim2_mx6q_dt.c | 224 -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- + 7 files changed, 193 insertions(+), 1034 deletions(-) + delete mode 100644 hdm-dim2/dim2_hdm.h + delete mode 100644 hdm-dim2/platform/dim2_arwen_mlb3.c + delete mode 100644 hdm-dim2/platform/dim2_arwen_mlb6.c + delete mode 100644 hdm-dim2/platform/dim2_h2_dt.c + delete mode 100644 hdm-dim2/platform/dim2_mx6q.c + delete mode 100644 hdm-dim2/platform/dim2_mx6q_dt.c + +diff --git a/hdm-dim2/dim2_hdm.c b/hdm-dim2/dim2_hdm.c +index e4629a5..2dba917 100644 +--- a/hdm-dim2/dim2_hdm.c ++++ b/hdm-dim2/dim2_hdm.c +@@ -14,6 +14,7 @@ + #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> +@@ -21,13 +22,13 @@ + #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 <mostcore.h> + #include "dim2_hal.h" +-#include "dim2_hdm.h" + #include "dim2_errors.h" + #include "dim2_sysfs.h" + +@@ -93,6 +94,9 @@ 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; +@@ -102,6 +106,12 @@ struct dim2_hdm { + struct medialb_bus bus; + void (*on_netinfo)(struct most_interface *, + unsigned char, unsigned char *); ++ 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) +@@ -686,6 +696,8 @@ 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 +@@ -695,7 +707,7 @@ 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; + struct dim2_hdm *dev; + struct resource *res; + int ret, i; +@@ -703,6 +715,8 @@ static int dim2_probe(struct platform_device *pdev) + 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; +@@ -710,29 +724,30 @@ 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; ++ pdata = of_match_node(dim2_of_match, pdev->dev.of_node)->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; +@@ -746,7 +761,7 @@ 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; +@@ -832,9 +847,9 @@ static int dim2_probe(struct platform_device *pdev) + 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; + } +@@ -848,7 +863,6 @@ static int dim2_probe(struct platform_device *pdev) + 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->bus); +@@ -859,37 +873,187 @@ 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"); +libgit2 0.26.0 |