From mboxrd@z Thu Jan 1 00:00:00 1970 Return-path: Received: from mga09.intel.com ([134.134.136.24]:33792 "EHLO mga09.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752633AbdLSVBF (ORCPT ); Tue, 19 Dec 2017 16:01:05 -0500 From: Andy Shevchenko To: Alan Cox , Sakari Ailus , linux-media@vger.kernel.org, Greg Kroah-Hartman , devel@driverdev.osuosl.org, Kristian Beilke Cc: Andy Shevchenko Subject: [PATCH v1 09/10] staging: atomisp: Use standard DMI match table Date: Tue, 19 Dec 2017 22:59:56 +0200 Message-Id: <20171219205957.10933-9-andriy.shevchenko@linux.intel.com> In-Reply-To: <20171219205957.10933-1-andriy.shevchenko@linux.intel.com> References: <20171219205957.10933-1-andriy.shevchenko@linux.intel.com> Sender: linux-media-owner@vger.kernel.org List-ID: The traditional pattern is to use DMI matching table and provide a corresponding driver_data in it. Convert driver to use DMI matching table. Signed-off-by: Andy Shevchenko --- .../platform/intel-mid/atomisp_gmin_platform.c | 109 +++++++++++++-------- 1 file changed, 70 insertions(+), 39 deletions(-) diff --git a/drivers/staging/media/atomisp/platform/intel-mid/atomisp_gmin_platform.c b/drivers/staging/media/atomisp/platform/intel-mid/atomisp_gmin_platform.c index 0f859bb714bf..8408a58ed764 100644 --- a/drivers/staging/media/atomisp/platform/intel-mid/atomisp_gmin_platform.c +++ b/drivers/staging/media/atomisp/platform/intel-mid/atomisp_gmin_platform.c @@ -209,7 +209,7 @@ struct gmin_cfg_var { const char *name, *val; }; -static const struct gmin_cfg_var ffrd8_vars[] = { +static struct gmin_cfg_var ffrd8_vars[] = { { "INTCF1B:00_ImxId", "0x134" }, { "INTCF1B:00_CsiPort", "1" }, { "INTCF1B:00_CsiLanes", "4" }, @@ -220,14 +220,14 @@ static const struct gmin_cfg_var ffrd8_vars[] = { /* Cribbed from MCG defaults in the mt9m114 driver, not actually verified * vs. T100 hardware */ -static const struct gmin_cfg_var t100_vars[] = { +static struct gmin_cfg_var t100_vars[] = { { "INT33F0:00_CsiPort", "0" }, { "INT33F0:00_CsiLanes", "1" }, { "INT33F0:00_CamClk", "1" }, {}, }; -static const struct gmin_cfg_var mrd7_vars[] = { +static struct gmin_cfg_var mrd7_vars[] = { {"INT33F8:00_CamType", "1"}, {"INT33F8:00_CsiPort", "1"}, {"INT33F8:00_CsiLanes", "2"}, @@ -243,7 +243,7 @@ static const struct gmin_cfg_var mrd7_vars[] = { {}, }; -static const struct gmin_cfg_var ecs7_vars[] = { +static struct gmin_cfg_var ecs7_vars[] = { {"INT33BE:00_CsiPort", "1"}, {"INT33BE:00_CsiLanes", "2"}, {"INT33BE:00_CsiFmt", "13"}, @@ -258,8 +258,7 @@ static const struct gmin_cfg_var ecs7_vars[] = { {}, }; - -static const struct gmin_cfg_var i8880_vars[] = { +static struct gmin_cfg_var i8880_vars[] = { {"XXOV2680:00_CsiPort", "1"}, {"XXOV2680:00_CsiLanes", "1"}, {"XXOV2680:00_CamClk", "0"}, @@ -269,18 +268,45 @@ static const struct gmin_cfg_var i8880_vars[] = { {}, }; -static const struct { - const char *dmi_board_name; - const struct gmin_cfg_var *vars; -} hard_vars[] = { - { "BYT-T FFD8", ffrd8_vars }, - { "T100TA", t100_vars }, - { "MRD7", mrd7_vars }, - { "ST70408", ecs7_vars }, - { "VTA0803", i8880_vars }, +static const struct dmi_system_id gmin_vars[] = { + { + .ident = "BYT-T FFD8", + .matches = { + DMI_MATCH(DMI_BOARD_NAME, "BYT-T FFD8"), + }, + .driver_data = ffrd8_vars, + }, + { + .ident = "T100TA", + .matches = { + DMI_MATCH(DMI_BOARD_NAME, "T100TA"), + }, + .driver_data = t100_vars, + }, + { + .ident = "MRD7", + .matches = { + DMI_MATCH(DMI_BOARD_NAME, "MRD7"), + }, + .driver_data = mrd7_vars, + }, + { + .ident = "ST70408", + .matches = { + DMI_MATCH(DMI_BOARD_NAME, "ST70408"), + }, + .driver_data = ecs7_vars, + }, + { + .ident = "VTA0803", + .matches = { + DMI_MATCH(DMI_BOARD_NAME, "VTA0803"), + }, + .driver_data = i8880_vars, + }, + {} }; - #define GMIN_CFG_VAR_EFI_GUID EFI_GUID(0xecb54cd9, 0xe5ae, 0x4fdc, \ 0xa9, 0x71, 0xe8, 0x77, \ 0x75, 0x60, 0x68, 0xf7) @@ -604,6 +630,29 @@ int atomisp_gmin_register_vcm_control(struct camera_vcm_control *vcmCtrl) } EXPORT_SYMBOL_GPL(atomisp_gmin_register_vcm_control); +static int gmin_get_hardcoded_var(struct gmin_cfg_var *varlist, + const char *var8, char *out, size_t *out_len) +{ + struct gmin_cfg_var *gv; + + for (gv = varlist; gv->name; gv++) { + size_t vl; + + if (strcmp(var8, gv->name)) + continue; + + vl = strlen(gv->val); + if (vl > *out_len - 1) + return -ENOSPC; + + strcpy(out, gv->val); + *out_len = vl; + return 0; + } + + return -EINVAL; +} + /* Retrieves a device-specific configuration variable. The dev * argument should be a device with an ACPI companion, as all * configuration is based on firmware ID. @@ -614,7 +663,8 @@ static int gmin_get_config_var(struct device *dev, const char *var, char var8[CFG_VAR_NAME_MAX]; efi_char16_t var16[CFG_VAR_NAME_MAX]; struct efivar_entry *ev; - int i, j, ret; + const struct dmi_system_id *id; + int i, ret; if (dev && ACPI_COMPANION(dev)) dev = &ACPI_COMPANION(dev)->dev; @@ -631,28 +681,9 @@ static int gmin_get_config_var(struct device *dev, const char *var, * Some device firmwares lack the ability to set EFI variables at * runtime. */ - for (i = 0; i < ARRAY_SIZE(hard_vars); i++) { - if (dmi_match(DMI_BOARD_NAME, hard_vars[i].dmi_board_name)) { - for (j = 0; hard_vars[i].vars[j].name; j++) { - size_t vl; - const struct gmin_cfg_var *gv; - - gv = &hard_vars[i].vars[j]; - vl = strlen(gv->val); - - if (strcmp(var8, gv->name)) - continue; - if (vl > *out_len - 1) - return -ENOSPC; - - memcpy(out, gv->val, min(*out_len, vl+1)); - out[*out_len-1] = 0; - *out_len = vl; - - return 0; - } - } - } + id = dmi_first_match(gmin_vars); + if (id) + return gmin_get_hardcoded_var(id->driver_data, var8, out, out_len); /* Our variable names are ASCII by construction, but EFI names * are wide chars. Convert and zero-pad. -- 2.15.1