From patchwork Wed May 29 08:01:09 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Yoshinori Sato X-Patchwork-Id: 13678192 Received: from sakura.ysato.name (ik1-413-38519.vs.sakura.ne.jp [153.127.30.23]) by smtp.subspace.kernel.org (Postfix) with ESMTP id 2B937180A8A; Wed, 29 May 2024 08:02:11 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=153.127.30.23 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1716969734; cv=none; b=I6ee1/2Fjippu7I0X27csybvWL6zQ+wsj4pwHym65VJ98lEmTHI4L7DalCN96PCqNsOScawVf1gDrF6myb2X68YDclX72r+KGQT0Br6QYQMI555yPEthqQ9LOZnAT/cBACPbtCz95WLuxQtNShnRzBlYNZD2NvGAMN15g7HrUCU= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1716969734; c=relaxed/simple; bh=rXJ3FIMjhLIJCYj9qzJ/Vj+aCVUa/aALbLHc5PmBo14=; h=From:To:Cc:Subject:Date:Message-Id:In-Reply-To:References: MIME-Version; b=h/H+dQJ24UJc2l1Hp+hsrloOUUfJg/nLG+sNtjwWUC7APv1j0aS8MluKow3UXaPX6sA85wLYHAfn6k4P6sZZVoyGlF4RSzuPPzuz6lno4SXeawYgQvFYMf4//KYX9yOJk3xDkcmWkAH8gdv5DvKKprNWi88jkTU2L7UpI7GEfBM= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=users.sourceforge.jp; spf=fail smtp.mailfrom=users.sourceforge.jp; arc=none smtp.client-ip=153.127.30.23 Authentication-Results: smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=users.sourceforge.jp Authentication-Results: smtp.subspace.kernel.org; spf=fail smtp.mailfrom=users.sourceforge.jp Received: from SIOS1075.ysato.name (al128006.dynamic.ppp.asahi-net.or.jp [111.234.128.6]) by sakura.ysato.name (Postfix) with ESMTPSA id 7DFDE1C0FD1; Wed, 29 May 2024 17:02:09 +0900 (JST) From: Yoshinori Sato To: linux-sh@vger.kernel.org Cc: Yoshinori Sato , Damien Le Moal , Niklas Cassel , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Geert Uytterhoeven , Michael Turquette , Stephen Boyd , David Airlie , Daniel Vetter , Maarten Lankhorst , Maxime Ripard , Thomas Zimmermann , Thomas Gleixner , Bjorn Helgaas , Lorenzo Pieralisi , =?utf-8?q?Krzysztof_Wilczy=C5=84?= =?utf-8?q?ski?= , Greg Kroah-Hartman , Jiri Slaby , Magnus Damm , Daniel Lezcano , Rich Felker , John Paul Adrian Glaubitz , Lee Jones , Helge Deller , Heiko Stuebner , Neil Armstrong , Chris Morgan , Sebastian Reichel , Linus Walleij , Arnd Bergmann , Masahiro Yamada , Baoquan He , Andrew Morton , Guenter Roeck , Kefeng Wang , Stephen Rothwell , Azeem Shaikh , Guo Ren , Max Filippov , Jernej Skrabec , Herve Codina , Andy Shevchenko , Anup Patel , Jacky Huang , Hugo Villeneuve , Jonathan Corbet , Wolfram Sang , =?utf-8?q?Uwe_Kleine-K?= =?utf-8?q?=C3=B6nig?= , Christophe JAILLET , Sam Ravnborg , Javier Martinez Canillas , Sergey Shtylyov , Laurent Pinchart , linux-ide@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-renesas-soc@vger.kernel.org, linux-clk@vger.kernel.org, dri-devel@lists.freedesktop.org, linux-pci@vger.kernel.org, linux-serial@vger.kernel.org, linux-fbdev@vger.kernel.org Subject: [DO NOT MERGE v8 23/36] mfd: sm501: Convert platform_data to OF property Date: Wed, 29 May 2024 17:01:09 +0900 Message-Id: X-Mailer: git-send-email 2.39.2 In-Reply-To: References: Precedence: bulk X-Mailing-List: linux-clk@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Various parameters of SM501 can be set using platform_data, so parameters cannot be passed in the DeviceTree target. Expands the parameters set in platform_data so that they can be specified using DeviceTree properties. Signed-off-by: Yoshinori Sato --- drivers/mfd/sm501.c | 238 ++++++++++++++++++++++++++++++++++ drivers/video/fbdev/sm501fb.c | 87 +++++++++++++ 2 files changed, 325 insertions(+) diff --git a/drivers/mfd/sm501.c b/drivers/mfd/sm501.c index b3592982a83b..d373aded0c3b 100644 --- a/drivers/mfd/sm501.c +++ b/drivers/mfd/sm501.c @@ -20,6 +20,7 @@ #include #include #include +#include #include #include @@ -82,6 +83,16 @@ struct sm501_devdata { unsigned int rev; }; +struct sm501_config_props_uint { + char *name; + u32 shift; +}; + +struct sm501_config_props_flag { + char *clr_name; + char *set_name; + u32 bit; +}; #define MHZ (1000 * 1000) @@ -1370,6 +1381,227 @@ static int sm501_init_dev(struct sm501_devdata *sm) return 0; } +#define FIELD_WIDTH 4 +struct dt_values { + char *name; + unsigned int offset; + unsigned int width; + char *val[(1 << FIELD_WIDTH) + 1]; +}; + +#define fld(_name, _offset, _width, ...) \ + { \ + .name = _name, \ + .offset = _offset, \ + .width = _width, \ + .val = { __VA_ARGS__, NULL}, \ + } + +static const struct dt_values misc_timing[] = { + fld("ex", 28, 4, + "none", "16", "32", "48", "64", "80", "96", "112", + "128", "144", "160", "176", "192", "208", "224", "240"), + fld("xc", 24, 2, "internal-pll", "hclk", "gpio30"), + fld("us", 23, 1, "disable", "enable"), + fld("ssm1", 20, 1, "288", "divider"), + fld("sm1", 16, 4, + "1", "2", "4", "8", "16", "32", "64", "128", + "3", "6", "12", "24", "48", "96", "192", "384"), + fld("ssm0", 12, 1, "288", "divider"), + fld("sm0", 8, 4, + "1", "2", "4", "8", "16", "32", "64", "128", + "3", "6", "12", "24", "48", "96", "192", "384"), + fld("deb", 7, 1, "input-reference", "output"), + fld("a", 6, 1, "no-acpi", "acpi"), + fld("divider", 4, 2, "336", "288", "240", "192"), + fld("u", 3, 1, "normal", "simulation"), + fld("delay", 0, 3, "none", "0.5", "1.0", "1.5", "2.0", "2.5"), + { .name = NULL }, +}; + +static const struct dt_values misc_control[] = { + fld("pad", 30, 2, "24", "12", "8"), + fld("usbclk", 28, 2, "xtal", "96", "48"), + fld("ssp", 27, 1, "uart1", "ssp1"), + fld("lat", 26, 1, "disable", "enable"), + fld("fp", 25, 1, "18", "24"), + fld("freq", 24, 1, "24", "12"), + fld("refresh", 21, 2, "8", "16", "32", "64"), + fld("hold", 18, 3, "fifo-empty", "8", "16", "24", "32"), + fld("sh", 17, 1, "active-low", "active-high"), + fld("ii", 16, 1, "normal", "inverted"), + fld("pll", 15, 1, "disable", "enable"), + fld("gap", 13, 2, "0"), + fld("dac", 12, 1, "enable", "disable"), + fld("mc", 11, 1, "cpu", "8051"), + fld("bl", 10, 8, "1"), + fld("usb", 9, 1, "master", "slave"), + fld("vr", 4, 1, "0x1e00000", "0x3e00000"), + { .name = NULL }, +}; + +/* Read configuration values */ +static void sm501_of_read_config(struct device *dev, struct device_node *np, + const char *prefix, + const struct dt_values *values, + struct sm501_reg_init *ret) +{ + const char *name; + const char *val; + unsigned int i; + char key[64]; + u32 shift; + u32 width; + u32 mask; + + ret->mask = ~0; + ret->set = 0; + + while (values->name) { + snprintf(key, sizeof(key), "%s-%s", prefix, values->name); + name = values->name; + shift = values->offset; + width = values->width; + + if (of_property_read_string(np, key, &val) == 0) { + mask = (1 << width) - 1; + mask = ~(mask << shift); + ret->mask &= mask; + i = 0; + while (values->val[i]) { + if (strcmp(val, values->val[i]) == 0) { + ret->set |= i << shift; + break; + } + i++; + } + } + values++; + } +} + +static void sm501_of_read_gpio(struct device *dev, struct device_node *np, + struct sm501_reg_init *hi, struct sm501_reg_init *low) +{ + struct device_node *gpio_node; + struct property *prop; + unsigned int pin_no; + const char *s; + int mode; + u64 mask; + u64 set; + + mask = ~0; + set = 0; + gpio_node = of_get_child_by_name(np, "gpio"); + if (gpio_node) { + for (prop = gpio_node->properties; prop; prop = prop->next) { + mode = -1; + if (sscanf(prop->name, "pin-%u", &pin_no) == 1) { + of_property_read_string(gpio_node, prop->name, &s); + if (strcmp(s, "ioport")) { + mode = 0; + } else if (strcmp(s, "function")) { + mode = 1; + } + } + if (mode >= 0) { + mask &= ~(1 << pin_no); + set |= mode << pin_no; + } + } + } + /* Bit48 - 54 is reserved */ + mask &= ~0x007f000000000000UL; + set &= ~0x007f000000000000UL; + + hi->set = set >> 32; + low->set = set & 0xffffffff; + hi->mask = mask >> 32; + low->mask = mask & 0xffffffff; +} + +/* Read device functions */ +static u32 sm501_read_devices(struct device *dev, struct device_node *np) +{ + static const char * const funcname[] = { + "usb-host", "usb-slave", "ssp0", "ssp1", + "uart0", "uart1", "fbaccel", "ac97", + "i2s", + }; + struct property *prop; + unsigned int i; + const char *s; + u32 ret = 0; + + of_property_for_each_string(np, "smi,devices", prop, s) { + for (i = 0; i < ARRAY_SIZE(funcname); i++) { + if (strcmp(s, funcname[i]) == 0) { + ret |= 1 << i; + goto next; + } + } + dev_warn(dev, "Unknown device function '%s'", s); +next: + } + if (!ret) + dev_warn(dev, "devices not defined. disable all functions."); + return ret; +} + +/* Build platform_data from OF property */ +struct plat_dt { + struct sm501_platdata plat; + struct sm501_initdata init; +}; + +static int mclk_get(struct device_node *np, int index, unsigned long *out) +{ + struct clk *clk; + + clk = of_clk_get(np, 0); + if (IS_ERR(clk)) + return PTR_ERR(clk); + *out = clk_get_rate(clk); + clk_put(clk); + return 0; +} + +static int sm501_parse_dt(struct sm501_devdata *sm, struct device_node *np) +{ + struct sm501_platdata *plat; + struct plat_dt *dt_p; + int ret; + + dt_p = devm_kzalloc(sm->dev, sizeof(*dt_p), GFP_KERNEL); + if (!dt_p) + return -ENOMEM; + + plat = &dt_p->plat; + plat->init = &dt_p->init; + + plat->init->devices = sm501_read_devices(sm->dev, np); + + ret = mclk_get(np, 0, &plat->init->mclk); + if (ret && ret != -ENOENT) + return ret; + ret = mclk_get(np, 0, &plat->init->m1xclk); + if (ret && ret != -ENOENT) + return ret; + + sm501_of_read_config(sm->dev, np, "misc-timing", + misc_timing, &plat->init->misc_timing); + sm501_of_read_config(sm->dev, np, "misc-control", + misc_control, &plat->init->misc_control); + if (IS_ENABLED(CONFIG_MFD_SM501_GPIO)) { + sm501_of_read_gpio(sm->dev, np, + &plat->init->gpio_high, + &plat->init->gpio_low); + } + sm->platdata = plat; + return 0; +} + static int sm501_plat_probe(struct platform_device *dev) { struct sm501_devdata *sm; @@ -1406,6 +1638,12 @@ static int sm501_plat_probe(struct platform_device *dev) goto err_res; } + if (IS_ENABLED(CONFIG_OF) && dev->dev.of_node) { + ret = sm501_parse_dt(sm, dev->dev.of_node); + if (ret) + goto err_res; + } + platform_set_drvdata(dev, sm); sm->regs = ioremap(sm->io_res->start, resource_size(sm->io_res)); diff --git a/drivers/video/fbdev/sm501fb.c b/drivers/video/fbdev/sm501fb.c index d6fdc1737cd2..4162e1322dd4 100644 --- a/drivers/video/fbdev/sm501fb.c +++ b/drivers/video/fbdev/sm501fb.c @@ -1932,6 +1932,87 @@ static int sm501fb_start_one(struct sm501fb_info *info, return 0; } +#if defined(CONFIG_OF) +static u32 read_display_flags(struct device_node *np) +{ + static const char * const name[] = { + "use-init-done", "disable-at-exit", "use-hwcursor", "use-hwaccel", + "panel-no-fpen", "panel-no-vbiasen", "panel-inv-fpen", "panel-inv-vbiasen", + }; + + struct property *prop; + unsigned int i; + const char *s; + u32 ret = 0; + + of_property_for_each_string(np, "smi,flags", prop, s) { + for (i = 0; i < ARRAY_SIZE(name); i++) { + if (strcmp(s, name[i]) == 0) { + ret |= 1 << i; + break; + } + } + } + return ret; +} + +/* parse CRT / panel configuration */ +static struct sm501_platdata_fbsub *dt_fbsub(struct device *dev, + struct device_node *np, + const char *name) +{ + struct sm501_platdata_fbsub *fbsub = NULL; + struct device_node *child; + u32 flags = 0; + u32 bpp = 0; + int len; + + child = of_get_child_by_name(np, name); + if (child == NULL) + return NULL; + + of_property_read_u32(child, "bpp", &bpp); + + /* If flags property is obtained, fbsub is returned. */ + flags = read_display_flags(child); + if (flags) { + fbsub = devm_kzalloc(dev, sizeof(*fbsub), GFP_KERNEL); + if (fbsub) { + fbsub->def_bpp = bpp; + fbsub->flags = flags; + } + } + return fbsub; +} + +/* Build platform_data from OF property */ +static struct sm501_platdata_fb *pdata_from_dt(struct device *dev, struct device_node *np) +{ + enum sm501_fb_routing fb_route = SM501_FB_OWN; + struct sm501_platdata_fb *pdata = NULL; + struct sm501_platdata_fbsub *fb_crt; + struct sm501_platdata_fbsub *fb_pnl; + unsigned int flags = 0; + + if (of_property_read_bool(np, "route-crt-panel")) + fb_route = SM501_FB_CRT_PANEL; + if (of_property_read_bool(np, "swap-fb-endian")) + flags = SM501_FBPD_SWAP_FB_ENDIAN; + fb_crt = dt_fbsub(dev, np, "crt"); + fb_pnl = dt_fbsub(dev, np, "panel"); + if (fb_crt || fb_pnl) { + pdata = devm_kzalloc(dev, sizeof(*pdata), GFP_KERNEL); + if (pdata) { + pdata->fb_route = fb_route; + pdata->flags = flags; + pdata->fb_crt = fb_crt; + pdata->fb_pnl = fb_pnl; + } + } + return pdata; +} +#endif + static int sm501fb_probe(struct platform_device *pdev) { struct sm501fb_info *info; @@ -1974,6 +2055,12 @@ static int sm501fb_probe(struct platform_device *pdev) if (info->edid_data) found = 1; } + /* Get platform data compatible configuration */ + if (!found) { + info->pdata = pdata_from_dt(dev, np); + if (info->pdata) + found = 1; + } } #endif if (!found) {