diff options
Diffstat (limited to 'meta-agl-profile-demo/recipes-kernel/most/files/0008-dim2-read-clock-speed-from-the-device-tree.patch')
| -rw-r--r-- | meta-agl-profile-demo/recipes-kernel/most/files/0008-dim2-read-clock-speed-from-the-device-tree.patch | 92 |
1 files changed, 0 insertions, 92 deletions
diff --git a/meta-agl-profile-demo/recipes-kernel/most/files/0008-dim2-read-clock-speed-from-the-device-tree.patch b/meta-agl-profile-demo/recipes-kernel/most/files/0008-dim2-read-clock-speed-from-the-device-tree.patch deleted file mode 100644 index 1b01fb156..000000000 --- a/meta-agl-profile-demo/recipes-kernel/most/files/0008-dim2-read-clock-speed-from-the-device-tree.patch +++ /dev/null @@ -1,92 +0,0 @@ -From 839ad403a2d8081a6c15f6fc2836b01919338f3c Mon Sep 17 00:00:00 2001 -From: Andrey Shvetsov <andrey.shvetsov@k2l.de> -Date: Mon, 12 Feb 2018 12:24:37 +0100 -Subject: [PATCH] staging: most: dim2: read clock speed from the device tree - -This implements reading of the clock speed parameter from the device -tree. - -Signed-off-by: Andrey Shvetsov <andrey.shvetsov@k2l.de> ---- - Documentation/devicetree/bindings/inic/microchip,inic-dim2.txt | 64 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ - hdm-dim2/dim2_hdm.c | 50 +++++++++++++++++++++++++++++++++++++++++++++++++- - 2 files changed, 113 insertions(+), 1 deletion(-) - create mode 100644 Documentation/devicetree/bindings/inic/microchip,inic-dim2.txt - -diff --git a/hdm-dim2/dim2_hdm.c b/hdm-dim2/dim2_hdm.c -index 2dba917..05e1896 100644 ---- a/hdm-dim2/dim2_hdm.c -+++ b/hdm-dim2/dim2_hdm.c -@@ -698,6 +698,42 @@ static void dma_free(struct mbo *mbo, u32 size) - - static const struct of_device_id dim2_of_match[]; - -+static struct { -+ const char *clock_speed; -+ u8 clk_speed; -+} clk_mt[] = { -+ { "256fs", CLK_256FS }, -+ { "512fs", CLK_512FS }, -+ { "1024fs", CLK_1024FS }, -+ { "2048fs", CLK_2048FS }, -+ { "3072fs", CLK_3072FS }, -+ { "4096fs", CLK_4096FS }, -+ { "6144fs", CLK_6144FS }, -+ { "8192fs", CLK_8192FS }, -+}; -+ -+/** -+ * get_dim2_clk_speed - converts string to DIM2 clock speed value -+ * -+ * @clock_speed: string in the format "{NUMBER}fs" -+ * @val: pointer to get one of the CLK_{NUMBER}FS values -+ * -+ * By success stores one of the CLK_{NUMBER}FS in the *val and returns 0, -+ * otherwise returns -EINVAL. -+ */ -+static int get_dim2_clk_speed(const char *clock_speed, u8 *val) -+{ -+ int i; -+ -+ for (i = 0; i < ARRAY_SIZE(clk_mt); i++) { -+ if (!strcmp(clock_speed, clk_mt[i].clock_speed)) { -+ *val = clk_mt[i].clk_speed; -+ return 0; -+ } -+ } -+ return -EINVAL; -+} -+ - /* - * dim2_probe - dim2 probe handler - * @pdev: platform device structure -@@ -708,6 +744,7 @@ static const struct of_device_id dim2_of_match[]; - static int dim2_probe(struct platform_device *pdev) - { - const struct dim2_platform_data *pdata; -+ const char *clock_speed; - struct dim2_hdm *dev; - struct resource *res; - int ret, i; -@@ -725,7 +762,18 @@ static int dim2_probe(struct platform_device *pdev) - - platform_set_drvdata(pdev, dev); - -- dev->clk_speed = CLK_4096FS; -+ ret = of_property_read_string(pdev->dev.of_node, -+ "microchip,clock-speed", &clock_speed); -+ if (ret) { -+ dev_err(&pdev->dev, "missing dt property clock-speed\n"); -+ return ret; -+ } -+ -+ ret = get_dim2_clk_speed(clock_speed, &dev->clk_speed); -+ if (ret) { -+ dev_err(&pdev->dev, "bad dt property clock-speed\n"); -+ return ret; -+ } - - res = platform_get_resource(pdev, IORESOURCE_MEM, 0); - dev->io_base = devm_ioremap_resource(&pdev->dev, res); --- -libgit2 0.26.0 |