Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754216AbZFDSha (ORCPT ); Thu, 4 Jun 2009 14:37:30 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1753751AbZFDShI (ORCPT ); Thu, 4 Jun 2009 14:37:08 -0400 Received: from fg-out-1718.google.com ([72.14.220.159]:20279 "EHLO fg-out-1718.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753941AbZFDShG (ORCPT ); Thu, 4 Jun 2009 14:37:06 -0400 DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=from:to:cc:subject:date:message-id:x-mailer:in-reply-to:references; b=iRFbmKziFCWYWtRhnfxgDykXRtdS1pdkooPMpviJjfHVG0RXoSylGhjRyGV4gcJXpJ 0R9WsdgOQ046aMOPc1aeVd0lX2u3BhkcLkdMmhlJ20kzpfnboxOBhgXA+KfvrFcUs2hZ 102AJ5epTghbJ76iwMsONkV3PF7g3ePntMzVM= From: Philipp Zabel To: linux-kernel@vger.kernel.org Cc: Samuel Ortiz , Philipp Zabel Subject: [PATCH 6/7] MFD: ASIC3: enable DS1WM cell. Date: Thu, 4 Jun 2009 20:36:15 +0200 Message-Id: <1244140576-18006-7-git-send-email-philipp.zabel@gmail.com> X-Mailer: git-send-email 1.6.3.1 In-Reply-To: <1244140576-18006-1-git-send-email-philipp.zabel@gmail.com> References: <1244140576-18006-1-git-send-email-philipp.zabel@gmail.com> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 4549 Lines: 165 This enables the ASIC3's DS1WM MFD cell, supported by the ds1wm driver. Signed-off-by: Philipp Zabel --- drivers/mfd/Kconfig | 1 + drivers/mfd/asic3.c | 98 +++++++++++++++++++++++++++++++++++++++++++++++++++ 2 files changed, 99 insertions(+), 0 deletions(-) diff --git a/drivers/mfd/Kconfig b/drivers/mfd/Kconfig index ee3927a..9e6d5ee 100644 --- a/drivers/mfd/Kconfig +++ b/drivers/mfd/Kconfig @@ -30,6 +30,7 @@ config MFD_SM501_GPIO config MFD_ASIC3 bool "Support for Compaq ASIC3" depends on GENERIC_HARDIRQS && GPIOLIB && ARM + select MFD_CORE ---help--- This driver supports the ASIC3 multifunction chip found on many PDAs (mainly iPAQ and HTC based ones) diff --git a/drivers/mfd/asic3.c b/drivers/mfd/asic3.c index a2a446d..cfe8b32 100644 --- a/drivers/mfd/asic3.c +++ b/drivers/mfd/asic3.c @@ -17,6 +17,7 @@ */ #include +#include #include #include #include @@ -24,6 +25,8 @@ #include #include +#include +#include enum { ASIC3_CLOCK_SPI, @@ -649,6 +652,97 @@ static void asic3_clk_disable(struct asic3 *asic, struct asic3_clk *clk) spin_unlock_irqrestore(&asic->lock, flags); } +/* MFD cells (SPI, PWM, DS1WM, MMC) */ +static struct ds1wm_driver_data ds1wm_pdata = { + .active_high = 1, +}; + +static struct resource ds1wm_resources[] = { + { + .flags = IORESOURCE_MEM, + }, + { + .start = ASIC3_IRQ_OWM, + .start = ASIC3_IRQ_OWM, + .flags = IORESOURCE_IRQ | IORESOURCE_IRQ_HIGHEDGE, + }, +}; + +static int ds1wm_enable(struct platform_device *pdev) +{ + struct device *dev = pdev->dev.parent; + struct asic3 *asic = dev->driver_data; + + /* Turn on external clocks and the OWM clock */ + asic3_clk_enable(asic, &asic->clocks[ASIC3_CLOCK_EX0]); + asic3_clk_enable(asic, &asic->clocks[ASIC3_CLOCK_EX1]); + asic3_clk_enable(asic, &asic->clocks[ASIC3_CLOCK_OWM]); + msleep(1); + + asic3_set_extcf_reset(dev, ASIC3_EXTCF_OWM_RESET, 1); + msleep(1); + asic3_set_extcf_reset(dev, ASIC3_EXTCF_OWM_RESET, 0); + msleep(1); + + /* Clear OWM_SMB, set OWM_EN */ + asic3_set_extcf_select(dev, ASIC3_EXTCF_OWM_EN, 1); + msleep(1); + + return 0; +} + +static int ds1wm_disable(struct platform_device *pdev) +{ + struct device *dev = pdev->dev.parent; + struct asic3 *asic = dev->driver_data; + + asic3_set_extcf_select(dev, ASIC3_EXTCF_OWM_EN, 0); + + asic3_clk_disable(asic, &asic->clocks[ASIC3_CLOCK_OWM]); + asic3_clk_disable(asic, &asic->clocks[ASIC3_CLOCK_EX0]); + asic3_clk_disable(asic, &asic->clocks[ASIC3_CLOCK_EX1]); + + return 0; +} + +static struct mfd_cell asic3_cell_ds1wm = { + .name = "ds1wm", + .enable = ds1wm_enable, + .disable = ds1wm_disable, + .driver_data = &ds1wm_pdata, + .num_resources = ARRAY_SIZE(ds1wm_resources), + .resources = ds1wm_resources, +}; + +static int __init asic3_mfd_probe(struct platform_device *pdev, + struct resource *mem) +{ + struct asic3 *asic = platform_get_drvdata(pdev); + int ret; + + /* DS1WM */ + asic3_set_extcf_select(&pdev->dev, ASIC3_EXTCF_OWM_SMB, 0); + + ds1wm_resources[0].start = ASIC3_OWM_BASE >> asic->bus_shift; + ds1wm_resources[0].end = ds1wm_resources[0].start + + (5 << (2 - asic->bus_shift)) - 1; + + asic3_cell_ds1wm.platform_data = &asic3_cell_ds1wm; + asic3_cell_ds1wm.data_size = sizeof(asic3_cell_ds1wm); + + ret = mfd_add_devices(&pdev->dev, pdev->id, + &asic3_cell_ds1wm, 1, mem, asic->irq_base); + + return ret; +} + +static void asic3_mfd_remove(struct platform_device *pdev) +{ + struct asic3 *asic = platform_get_drvdata(pdev); + + mfd_remove_devices(&pdev->dev); +} + /* Core */ static int __init asic3_probe(struct platform_device *pdev) { @@ -716,6 +810,8 @@ static int __init asic3_probe(struct platform_device *pdev) */ memcpy(asic->clocks, asic3_clk_init, sizeof(asic3_clk_init)); + asic3_mfd_probe(pdev, mem); + dev_info(asic->dev, "ASIC3 Core driver\n"); return 0; @@ -737,6 +833,8 @@ static int asic3_remove(struct platform_device *pdev) int ret; struct asic3 *asic = platform_get_drvdata(pdev); + asic3_mfd_remove(pdev); + ret = asic3_gpio_remove(pdev); if (ret < 0) return ret; -- 1.6.3.1 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/