From mboxrd@z Thu Jan 1 00:00:00 1970 From: Lubomir Rintel Subject: [PATCH v2 12/17] x86, olpc: Use a correct version when making up a battery node Date: Fri, 16 Nov 2018 17:23:58 +0100 Message-ID: <20181116162403.49854-13-lkundrak@v3.sk> References: <20181116162403.49854-1-lkundrak@v3.sk> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Cc: Mark Rutland , devicetree@vger.kernel.org, devel@driverdev.osuosl.org, Eric Miao , James Cameron , linux-pm@vger.kernel.org, Greg Kroah-Hartman , linux-kernel@vger.kernel.org, Sebastian Reichel , Haojian Zhuang , linux-spi@vger.kernel.org, Lubomir Rintel , Rob Herring , linux-arm-kernel@lists.infradead.org, platform-driver-x86@vger.kernel.org, Robert Jarzmik , Daniel Mack To: Mark Brown , Geert Uytterhoeven , Darren Hart , Andy Shevchenko Return-path: In-Reply-To: <20181116162403.49854-1-lkundrak@v3.sk> List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: driverdev-devel-bounces@linuxdriverproject.org Sender: "devel" List-Id: linux-spi.vger.kernel.org The XO-1 and XO-1.5 batteries apparently differ in an ability to report ambient temperature. Add a different compatible string to the 1.5 battery. Signed-off-by: Lubomir Rintel Acked-by: Pavel Machek --- Changes since v1: - Avoid splitting string literals arch/x86/platform/olpc/olpc_dt.c | 85 +++++++++++++++++++++----------- 1 file changed, 57 insertions(+), 28 deletions(-) diff --git a/arch/x86/platform/olpc/olpc_dt.c b/arch/x86/platform/olpc/olpc_dt.c index 24d2175a9480..6063f52ed807 100644 --- a/arch/x86/platform/olpc/olpc_dt.c +++ b/arch/x86/platform/olpc/olpc_dt.c @@ -218,10 +218,28 @@ static u32 __init olpc_dt_get_board_revision(void) return be32_to_cpu(rev); } -void __init olpc_dt_fixup(void) +int olpc_dt_compatible_match(phandle node, const char *compat) { - int r; char buf[64]; + int plen; + char *p; + int len; + + plen = olpc_dt_getproperty(node, "compatible", buf, sizeof(buf)); + if (plen <= 0) + return 0; + + len = strlen(compat); + for (p = buf; p < buf + plen; p += strlen(p) + 1) { + if (strcmp(p, compat) == 0) + return 1; + } + + return 0; +} + +void __init olpc_dt_fixup(void) +{ phandle node; u32 board_rev; @@ -229,41 +247,51 @@ void __init olpc_dt_fixup(void) if (!node) return; - /* - * If the battery node has a compatible property, we are running a new - * enough firmware and don't have fixups to make. - */ - r = olpc_dt_getproperty(node, "compatible", buf, sizeof(buf)); - if (r > 0) - return; - - pr_info("PROM DT: Old firmware detected, applying fixes\n"); - - /* Add olpc,xo1-battery compatible marker to battery node */ - olpc_dt_interpret("\" /battery@0\" find-device" - " \" olpc,xo1-battery\" +compatible" - " device-end"); - board_rev = olpc_dt_get_board_revision(); if (!board_rev) return; if (board_rev >= olpc_board_pre(0xd0)) { + if (olpc_dt_compatible_match(node, "olpc,xo1.5-battery")) + return; + + /* Add olpc,xo1.5-battery compatible marker to battery node */ + olpc_dt_interpret("\" /battery@0\" find-device"); + olpc_dt_interpret(" \" olpc,xo1.5-battery\" +compatible"); + olpc_dt_interpret("device-end"); + + /* We're running a very old firmware if this is missing. */ + if (olpc_dt_compatible_match(node, "olpc,xo1-battery")) + return; + /* XO-1.5: add dcon device */ - olpc_dt_interpret("\" /pci/display@1\" find-device" - " new-device" - " \" dcon\" device-name \" olpc,xo1-dcon\" +compatible" - " finish-device device-end"); + olpc_dt_interpret("\" /pci/display@1\" find-device"); + olpc_dt_interpret(" new-device"); + olpc_dt_interpret(" \" dcon\" device-name"); + olpc_dt_interpret(" \" olpc,xo1-dcon\" +compatible"); + olpc_dt_interpret(" finish-device"); + olpc_dt_interpret("device-end"); } else { + /* We're running a very old firmware if this is missing. */ + if (olpc_dt_compatible_match(node, "olpc,xo1-battery")) + return; + /* XO-1: add dcon device, mark RTC as olpc,xo1-rtc */ - olpc_dt_interpret("\" /pci/display@1,1\" find-device" - " new-device" - " \" dcon\" device-name \" olpc,xo1-dcon\" +compatible" - " finish-device device-end" - " \" /rtc\" find-device" - " \" olpc,xo1-rtc\" +compatible" - " device-end"); + olpc_dt_interpret("\" /pci/display@1,1\" find-device"); + olpc_dt_interpret(" new-device"); + olpc_dt_interpret(" \" dcon\" device-name"); + olpc_dt_interpret(" \" olpc,xo1-dcon\" +compatible"); + olpc_dt_interpret(" finish-device"); + olpc_dt_interpret("device-end"); + olpc_dt_interpret("\" /rtc\" find-device"); + olpc_dt_interpret(" \" olpc,xo1-rtc\" +compatible"); + olpc_dt_interpret("device-end"); } + + /* Add olpc,xo1-battery compatible marker to battery node */ + olpc_dt_interpret("\" /battery@0\" find-device"); + olpc_dt_interpret(" \" olpc,xo1-battery\" +compatible"); + olpc_dt_interpret("device-end"); } void __init olpc_dt_build_devicetree(void) @@ -289,6 +317,7 @@ void __init olpc_dt_build_devicetree(void) /* A list of DT node/bus matches that we want to expose as platform devices */ static struct of_device_id __initdata of_ids[] = { { .compatible = "olpc,xo1-battery" }, + { .compatible = "olpc,xo1.5-battery" }, { .compatible = "olpc,xo1-dcon" }, { .compatible = "olpc,xo1-rtc" }, {}, -- 2.19.1