{"id":1941020,"url":"http://patchwork.ozlabs.org/api/patches/1941020/?format=json","web_url":"http://patchwork.ozlabs.org/project/linux-pci/patch/c139d3a42c61d978296aa2e513de073c643e4fbe.1716965617.git.ysato@users.sourceforge.jp/","project":{"id":28,"url":"http://patchwork.ozlabs.org/api/projects/28/?format=json","name":"Linux PCI development","link_name":"linux-pci","list_id":"linux-pci.vger.kernel.org","list_email":"linux-pci@vger.kernel.org","web_url":null,"scm_url":null,"webscm_url":null,"list_archive_url":"","list_archive_url_format":"","commit_url_format":""},"msgid":"","list_archive_url":null,"date":"2024-05-29T08:01:09","name":"[DO,NOT,MERGE,v8,23/36] mfd: sm501: Convert platform_data to OF property","commit_ref":null,"pull_url":null,"state":"new","archived":false,"hash":"4b8b474b23ccc34ee1c1199cf916d46fcdbceaee","submitter":{"id":7114,"url":"http://patchwork.ozlabs.org/api/people/7114/?format=json","name":"Yoshinori Sato","email":"ysato@users.sourceforge.jp"},"delegate":null,"mbox":"http://patchwork.ozlabs.org/project/linux-pci/patch/c139d3a42c61d978296aa2e513de073c643e4fbe.1716965617.git.ysato@users.sourceforge.jp/mbox/","series":[{"id":408652,"url":"http://patchwork.ozlabs.org/api/series/408652/?format=json","web_url":"http://patchwork.ozlabs.org/project/linux-pci/list/?series=408652","date":"2024-05-29T08:00:51","name":"Device Tree support for SH7751 based board","version":8,"mbox":"http://patchwork.ozlabs.org/series/408652/mbox/"}],"comments":"http://patchwork.ozlabs.org/api/patches/1941020/comments/","check":"pending","checks":"http://patchwork.ozlabs.org/api/patches/1941020/checks/","tags":{},"related":[],"headers":{"Return-Path":"\n ","X-Original-To":["incoming@patchwork.ozlabs.org","linux-pci@vger.kernel.org"],"Delivered-To":"patchwork-incoming@legolas.ozlabs.org","Authentication-Results":["legolas.ozlabs.org;\n spf=pass (sender SPF authorized) smtp.mailfrom=vger.kernel.org\n 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d=subspace.kernel.org;\n\ts=arc-20240116; t=1716969734; c=relaxed/simple;\n\tbh=rXJ3FIMjhLIJCYj9qzJ/Vj+aCVUa/aALbLHc5PmBo14=;\n\th=From:To:Cc:Subject:Date:Message-Id:In-Reply-To:References:\n\t MIME-Version;\n b=h/H+dQJ24UJc2l1Hp+hsrloOUUfJg/nLG+sNtjwWUC7APv1j0aS8MluKow3UXaPX6sA85wLYHAfn6k4P6sZZVoyGlF4RSzuPPzuz6lno4SXeawYgQvFYMf4//KYX9yOJk3xDkcmWkAH8gdv5DvKKprNWi88jkTU2L7UpI7GEfBM=","ARC-Authentication-Results":"i=1; smtp.subspace.kernel.org;\n dmarc=none (p=none dis=none) header.from=users.sourceforge.jp;\n spf=fail smtp.mailfrom=users.sourceforge.jp;\n arc=none smtp.client-ip=153.127.30.23","From":"Yoshinori Sato ","To":"linux-sh@vger.kernel.org","Cc":"Yoshinori Sato ,\n Damien Le Moal , Niklas Cassel ,\n Rob Herring , Krzysztof Kozlowski ,\n Conor Dooley ,\n Geert Uytterhoeven ,\n Michael Turquette , Stephen Boyd ,\n David Airlie , Daniel Vetter ,\n Maarten Lankhorst ,\n Maxime Ripard , Thomas Zimmermann ,\n Thomas Gleixner , Bjorn Helgaas ,\n Lorenzo Pieralisi , =?utf-8?q?Krzysztof_Wilczy=C5=84?=\n\t=?utf-8?q?ski?= ,\n Greg Kroah-Hartman ,\n Jiri Slaby , Magnus Damm ,\n Daniel Lezcano , Rich Felker ,\n John Paul Adrian Glaubitz ,\n Lee Jones , Helge Deller ,\n Heiko Stuebner ,\n Neil Armstrong ,\n Chris Morgan , Sebastian Reichel ,\n Linus Walleij , Arnd Bergmann ,\n Masahiro Yamada , Baoquan He ,\n Andrew Morton ,\n Guenter Roeck , Kefeng Wang ,\n Stephen Rothwell ,\n Azeem Shaikh , Guo Ren ,\n Max Filippov , Jernej Skrabec ,\n Herve Codina ,\n Andy Shevchenko ,\n Anup Patel , Jacky Huang ,\n Hugo Villeneuve , Jonathan Corbet ,\n Wolfram Sang , =?utf-8?q?Uwe_Kleine-K?=\n\t=?utf-8?q?=C3=B6nig?= ,\n Christophe JAILLET ,\n Sam Ravnborg ,\n Javier Martinez Canillas ,\n Sergey Shtylyov ,\n Laurent Pinchart ,\n linux-ide@vger.kernel.org, devicetree@vger.kernel.org,\n linux-kernel@vger.kernel.org, linux-renesas-soc@vger.kernel.org,\n linux-clk@vger.kernel.org, dri-devel@lists.freedesktop.org,\n linux-pci@vger.kernel.org, linux-serial@vger.kernel.org,\n linux-fbdev@vger.kernel.org","Subject":"[DO NOT MERGE v8 23/36] mfd: sm501: Convert platform_data to OF\n property","Date":"Wed, 29 May 2024 17:01:09 +0900","Message-Id":"\n ","X-Mailer":"git-send-email 2.39.2","In-Reply-To":"","References":"","Precedence":"bulk","X-Mailing-List":"linux-pci@vger.kernel.org","List-Id":"","List-Subscribe":"","List-Unsubscribe":"","MIME-Version":"1.0","Content-Transfer-Encoding":"8bit"},"content":"Various parameters of SM501 can be set using platform_data,\nso parameters cannot be passed in the DeviceTree target.\nExpands the parameters set in platform_data so that they can be\nspecified using DeviceTree properties.\n\nSigned-off-by: Yoshinori Sato \n---\n drivers/mfd/sm501.c | 238 ++++++++++++++++++++++++++++++++++\n drivers/video/fbdev/sm501fb.c | 87 +++++++++++++\n 2 files changed, 325 insertions(+)","diff":"diff --git a/drivers/mfd/sm501.c b/drivers/mfd/sm501.c\nindex b3592982a83b..d373aded0c3b 100644\n--- a/drivers/mfd/sm501.c\n+++ b/drivers/mfd/sm501.c\n@@ -20,6 +20,7 @@\n #include \n #include \n #include \n+#include \n \n #include \n #include \n@@ -82,6 +83,16 @@ struct sm501_devdata {\n \tunsigned int\t\t\t rev;\n };\n \n+struct sm501_config_props_uint {\n+\tchar *name;\n+\tu32 shift;\n+};\n+\n+struct sm501_config_props_flag {\n+\tchar *clr_name;\n+\tchar *set_name;\n+\tu32 bit;\n+};\n \n #define MHZ (1000 * 1000)\n \n@@ -1370,6 +1381,227 @@ static int sm501_init_dev(struct sm501_devdata *sm)\n \treturn 0;\n }\n \n+#define FIELD_WIDTH 4\n+struct dt_values {\n+\tchar *name;\n+\tunsigned int offset;\n+\tunsigned int width;\n+\tchar *val[(1 << FIELD_WIDTH) + 1];\n+};\n+\n+#define fld(_name, _offset, _width, ...)\t\\\n+\t{ \\\n+\t\t.name = _name, \\\n+\t\t.offset = _offset, \\\n+\t\t.width = _width,\t\\\n+\t\t.val = { __VA_ARGS__, NULL},\t\\\n+\t}\n+\n+static const struct dt_values misc_timing[] = {\n+\tfld(\"ex\", 28, 4,\n+\t \"none\", \"16\", \"32\", \"48\", \"64\", \"80\", \"96\", \"112\",\n+\t \"128\", \"144\", \"160\", \"176\", \"192\", \"208\", \"224\", \"240\"),\n+\tfld(\"xc\", 24, 2, \"internal-pll\", \"hclk\", \"gpio30\"),\n+\tfld(\"us\", 23, 1, \"disable\", \"enable\"),\n+\tfld(\"ssm1\", 20, 1, \"288\", \"divider\"),\n+\tfld(\"sm1\", 16, 4,\n+\t \"1\", \"2\", \"4\", \"8\", \"16\", \"32\", \"64\", \"128\",\n+\t \"3\", \"6\", \"12\", \"24\", \"48\", \"96\", \"192\", \"384\"),\n+\tfld(\"ssm0\", 12, 1, \"288\", \"divider\"),\n+\tfld(\"sm0\", 8, 4,\n+\t \"1\", \"2\", \"4\", \"8\", \"16\", \"32\", \"64\", \"128\",\n+\t \"3\", \"6\", \"12\", \"24\", \"48\", \"96\", \"192\", \"384\"),\n+\tfld(\"deb\", 7, 1, \"input-reference\", \"output\"),\n+\tfld(\"a\", 6, 1, \"no-acpi\", \"acpi\"),\n+\tfld(\"divider\", 4, 2, \"336\", \"288\", \"240\", \"192\"),\n+\tfld(\"u\", 3, 1, \"normal\", \"simulation\"),\n+\tfld(\"delay\", 0, 3, \"none\", \"0.5\", \"1.0\", \"1.5\", \"2.0\", \"2.5\"),\n+\t{ .name = NULL },\n+};\n+\n+static const struct dt_values misc_control[] = {\n+\tfld(\"pad\", 30, 2, \"24\", \"12\", \"8\"),\n+\tfld(\"usbclk\", 28, 2, \"xtal\", \"96\", \"48\"),\n+\tfld(\"ssp\", 27, 1, \"uart1\", \"ssp1\"),\n+\tfld(\"lat\", 26, 1, \"disable\", \"enable\"),\n+\tfld(\"fp\", 25, 1, \"18\", \"24\"),\n+\tfld(\"freq\", 24, 1, \"24\", \"12\"),\n+\tfld(\"refresh\", 21, 2, \"8\", \"16\", \"32\", \"64\"),\n+\tfld(\"hold\", 18, 3, \"fifo-empty\", \"8\", \"16\", \"24\", \"32\"),\n+\tfld(\"sh\", 17, 1, \"active-low\", \"active-high\"),\n+\tfld(\"ii\", 16, 1, \"normal\", \"inverted\"),\n+\tfld(\"pll\", 15, 1, \"disable\", \"enable\"),\n+\tfld(\"gap\", 13, 2, \"0\"),\n+\tfld(\"dac\", 12, 1, \"enable\", \"disable\"),\n+\tfld(\"mc\", 11, 1, \"cpu\", \"8051\"),\n+\tfld(\"bl\", 10, 8, \"1\"),\n+\tfld(\"usb\", 9, 1, \"master\", \"slave\"),\n+\tfld(\"vr\", 4, 1, \"0x1e00000\", \"0x3e00000\"),\n+\t{ .name = NULL },\n+};\n+\n+/* Read configuration values */\n+static void sm501_of_read_config(struct device *dev, struct device_node *np,\n+\t\t\t\t const char *prefix,\n+\t\t\t\t const struct dt_values *values,\n+\t\t\t\t struct sm501_reg_init *ret)\n+{\n+\tconst char *name;\n+\tconst char *val;\n+\tunsigned int i;\n+\tchar key[64];\n+\tu32 shift;\n+\tu32 width;\n+\tu32 mask;\n+\n+\tret->mask = ~0;\n+\tret->set = 0;\n+\n+\twhile (values->name) {\n+\t\tsnprintf(key, sizeof(key), \"%s-%s\", prefix, values->name);\n+\t\tname = values->name;\n+\t\tshift = values->offset;\n+\t\twidth = values->width;\n+\n+\t\tif (of_property_read_string(np, key, &val) == 0) {\n+\t\t\tmask = (1 << width) - 1;\n+\t\t\tmask = ~(mask << shift);\n+\t\t\tret->mask &= mask;\n+\t\t\ti = 0;\n+\t\t\twhile (values->val[i]) {\n+\t\t\t\tif (strcmp(val, values->val[i]) == 0) {\n+\t\t\t\t\tret->set |= i << shift;\n+\t\t\t\t\tbreak;\n+\t\t\t\t}\n+\t\t\t\ti++;\n+\t\t\t}\n+\t\t}\n+\t\tvalues++;\n+\t}\n+}\n+\n+static void sm501_of_read_gpio(struct device *dev, struct device_node *np,\n+\t\t\t struct sm501_reg_init *hi, struct sm501_reg_init *low)\n+{\n+\tstruct device_node *gpio_node;\n+\tstruct property *prop;\n+\tunsigned int pin_no;\n+\tconst char *s;\n+\tint mode;\n+\tu64 mask;\n+\tu64 set;\n+\n+\tmask = ~0;\n+\tset = 0;\n+\tgpio_node = of_get_child_by_name(np, \"gpio\");\n+\tif (gpio_node) {\n+\t\tfor (prop = gpio_node->properties; prop; prop = prop->next) {\n+\t\t\tmode = -1;\n+\t\t\tif (sscanf(prop->name, \"pin-%u\", &pin_no) == 1) {\n+\t\t\t\tof_property_read_string(gpio_node, prop->name, &s);\n+\t\t\t\tif (strcmp(s, \"ioport\")) {\n+\t\t\t\t\tmode = 0;\n+\t\t\t\t} else if (strcmp(s, \"function\")) {\n+\t\t\t\t\tmode = 1;\n+\t\t\t\t}\n+\t\t\t}\n+\t\t\tif (mode >= 0) {\n+\t\t\t\tmask &= ~(1 << pin_no);\n+\t\t\t\tset |= mode << pin_no;\n+\t\t\t}\n+\t\t}\n+\t}\n+\t/* Bit48 - 54 is reserved */\n+\tmask &= ~0x007f000000000000UL;\n+\tset &= ~0x007f000000000000UL;\n+\n+\thi->set = set >> 32;\n+\tlow->set = set & 0xffffffff;\n+\thi->mask = mask >> 32;\n+\tlow->mask = mask & 0xffffffff;\n+}\n+\n+/* Read device functions */\n+static u32 sm501_read_devices(struct device *dev, struct device_node *np)\n+{\n+\tstatic const char * const funcname[] = {\n+\t\t\"usb-host\", \"usb-slave\", \"ssp0\", \"ssp1\",\n+\t\t\"uart0\", \"uart1\", \"fbaccel\", \"ac97\",\n+\t\t\"i2s\",\n+\t};\n+\tstruct property *prop;\n+\tunsigned int i;\n+\tconst char *s;\n+\tu32 ret = 0;\n+\n+\tof_property_for_each_string(np, \"smi,devices\", prop, s) {\n+\t\tfor (i = 0; i < ARRAY_SIZE(funcname); i++) {\n+\t\t\tif (strcmp(s, funcname[i]) == 0) {\n+\t\t\t\tret |= 1 << i;\n+\t\t\t\tgoto next;\n+\t\t\t}\n+\t\t}\n+\t\tdev_warn(dev, \"Unknown device function '%s'\", s);\n+next:\n+\t}\n+\tif (!ret)\n+\t\tdev_warn(dev, \"devices not defined. disable all functions.\");\n+\treturn ret;\n+}\n+\n+/* Build platform_data from OF property */\n+struct plat_dt {\n+\tstruct sm501_platdata plat;\n+\tstruct sm501_initdata init;\n+};\n+\n+static int mclk_get(struct device_node *np, int index, unsigned long *out)\n+{\n+\tstruct clk *clk;\n+\n+\tclk = of_clk_get(np, 0);\n+\tif (IS_ERR(clk))\n+\t\treturn PTR_ERR(clk);\n+\t*out = clk_get_rate(clk);\n+\tclk_put(clk);\n+\treturn 0;\n+}\n+\n+static int sm501_parse_dt(struct sm501_devdata *sm, struct device_node *np)\n+{\n+\tstruct sm501_platdata *plat;\n+\tstruct plat_dt *dt_p;\n+\tint ret;\n+\n+\tdt_p = devm_kzalloc(sm->dev, sizeof(*dt_p), GFP_KERNEL);\n+\tif (!dt_p)\n+\t\treturn -ENOMEM;\n+\n+\tplat = &dt_p->plat;\n+\tplat->init = &dt_p->init;\n+\n+\tplat->init->devices = sm501_read_devices(sm->dev, np);\n+\n+\tret = mclk_get(np, 0, &plat->init->mclk);\n+\tif (ret && ret != -ENOENT)\n+\t\treturn ret;\n+\tret = mclk_get(np, 0, &plat->init->m1xclk);\n+\tif (ret && ret != -ENOENT)\n+\t\treturn ret;\n+\n+\tsm501_of_read_config(sm->dev, np, \"misc-timing\",\n+\t\t\t misc_timing, &plat->init->misc_timing);\n+\tsm501_of_read_config(sm->dev, np, \"misc-control\",\n+\t\t\t misc_control, &plat->init->misc_control);\n+\tif (IS_ENABLED(CONFIG_MFD_SM501_GPIO)) {\n+\t\tsm501_of_read_gpio(sm->dev, np,\n+\t\t\t\t &plat->init->gpio_high,\n+\t\t\t\t &plat->init->gpio_low);\n+\t}\n+\tsm->platdata = plat;\n+\treturn 0;\n+}\n+\n static int sm501_plat_probe(struct platform_device *dev)\n {\n \tstruct sm501_devdata *sm;\n@@ -1406,6 +1638,12 @@ static int sm501_plat_probe(struct platform_device *dev)\n \t\tgoto err_res;\n \t}\n \n+\tif (IS_ENABLED(CONFIG_OF) && dev->dev.of_node) {\n+\t\tret = sm501_parse_dt(sm, dev->dev.of_node);\n+\t\tif (ret)\n+\t\t\tgoto err_res;\n+\t}\n+\n \tplatform_set_drvdata(dev, sm);\n \n \tsm->regs = ioremap(sm->io_res->start, resource_size(sm->io_res));\ndiff --git a/drivers/video/fbdev/sm501fb.c b/drivers/video/fbdev/sm501fb.c\nindex d6fdc1737cd2..4162e1322dd4 100644\n--- a/drivers/video/fbdev/sm501fb.c\n+++ b/drivers/video/fbdev/sm501fb.c\n@@ -1932,6 +1932,87 @@ static int sm501fb_start_one(struct sm501fb_info *info,\n \treturn 0;\n }\n \n+#if defined(CONFIG_OF)\n+static u32 read_display_flags(struct device_node *np)\n+{\n+\tstatic const char * const name[] = {\n+\t\t\"use-init-done\", \"disable-at-exit\", \"use-hwcursor\", \"use-hwaccel\",\n+\t\t\"panel-no-fpen\", \"panel-no-vbiasen\", \"panel-inv-fpen\", \"panel-inv-vbiasen\",\n+\t};\n+\n+\tstruct property *prop;\n+\tunsigned int i;\n+\tconst char *s;\n+\tu32 ret = 0;\n+\n+\tof_property_for_each_string(np, \"smi,flags\", prop, s) {\n+\t\tfor (i = 0; i < ARRAY_SIZE(name); i++) {\n+\t\t\tif (strcmp(s, name[i]) == 0) {\n+\t\t\t\tret |= 1 << i;\n+\t\t\t\tbreak;\n+\t\t\t}\n+\t\t}\n+\t}\n+\treturn ret;\n+}\n+\n+/* parse CRT / panel configuration */\n+static struct sm501_platdata_fbsub *dt_fbsub(struct device *dev,\n+\t\t\t\t\t struct device_node *np,\n+\t\t\t\t\t const char *name)\n+{\n+\tstruct sm501_platdata_fbsub *fbsub = NULL;\n+\tstruct device_node *child;\n+\tu32 flags = 0;\n+\tu32 bpp = 0;\n+\tint len;\n+\n+\tchild = of_get_child_by_name(np, name);\n+\tif (child == NULL)\n+\t\treturn NULL;\n+\n+\tof_property_read_u32(child, \"bpp\", &bpp);\n+\n+\t/* If flags property is obtained, fbsub is returned. */\n+\tflags = read_display_flags(child);\n+\tif (flags) {\n+\t\tfbsub = devm_kzalloc(dev, sizeof(*fbsub), GFP_KERNEL);\n+\t\tif (fbsub) {\n+\t\t\tfbsub->def_bpp = bpp;\n+\t\t\tfbsub->flags = flags;\n+\t\t}\n+\t}\n+\treturn fbsub;\n+}\n+\n+/* Build platform_data from OF property */\n+static struct sm501_platdata_fb *pdata_from_dt(struct device *dev, struct device_node *np)\n+{\n+\tenum sm501_fb_routing fb_route = SM501_FB_OWN;\n+\tstruct sm501_platdata_fb *pdata = NULL;\n+\tstruct sm501_platdata_fbsub *fb_crt;\n+\tstruct sm501_platdata_fbsub *fb_pnl;\n+\tunsigned int flags = 0;\n+\n+\tif (of_property_read_bool(np, \"route-crt-panel\"))\n+\t\tfb_route = SM501_FB_CRT_PANEL;\n+\tif (of_property_read_bool(np, \"swap-fb-endian\"))\n+\t\tflags = SM501_FBPD_SWAP_FB_ENDIAN;\n+\tfb_crt = dt_fbsub(dev, np, \"crt\");\n+\tfb_pnl = dt_fbsub(dev, np, \"panel\");\n+\tif (fb_crt || fb_pnl) {\n+\t\tpdata = devm_kzalloc(dev, sizeof(*pdata), GFP_KERNEL);\n+\t\tif (pdata) {\n+\t\t\tpdata->fb_route = fb_route;\n+\t\t\tpdata->flags = flags;\n+\t\t\tpdata->fb_crt = fb_crt;\n+\t\t\tpdata->fb_pnl = fb_pnl;\n+\t\t}\n+\t}\n+\treturn pdata;\n+}\n+#endif\n+\n static int sm501fb_probe(struct platform_device *pdev)\n {\n \tstruct sm501fb_info *info;\n@@ -1974,6 +2055,12 @@ static int sm501fb_probe(struct platform_device *pdev)\n \t\t\t\tif (info->edid_data)\n \t\t\t\t\tfound = 1;\n \t\t\t}\n+\t\t\t/* Get platform data compatible configuration */\n+\t\t\tif (!found) {\n+\t\t\t\tinfo->pdata = pdata_from_dt(dev, np);\n+\t\t\t\tif (info->pdata)\n+\t\t\t\t\tfound = 1;\n+\t\t\t}\n \t\t}\n #endif\n \t\tif (!found) {\n","prefixes":["DO","NOT","MERGE","v8","23/36"]}