From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-wi0-f171.google.com ([209.85.212.171]) by bombadil.infradead.org with esmtps (Exim 4.80.1 #2 (Red Hat Linux)) id 1WSMbY-00025A-A6 for linux-mtd@lists.infradead.org; Tue, 25 Mar 2014 08:21:04 +0000 Received: by mail-wi0-f171.google.com with SMTP id hr14so1708878wib.16 for ; Tue, 25 Mar 2014 01:20:38 -0700 (PDT) From: Lee Jones To: linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org Subject: [RFC 11/47] mtd: nand: stm_nand_bch: add Power Management Date: Tue, 25 Mar 2014 08:19:28 +0000 Message-Id: <1395735604-26706-12-git-send-email-lee.jones@linaro.org> In-Reply-To: <1395735604-26706-1-git-send-email-lee.jones@linaro.org> References: <1395735604-26706-1-git-send-email-lee.jones@linaro.org> Cc: angus.clark@st.com, kernel@stlinux.com, lee.jones@linaro.org, linux-mtd@lists.infradead.org, pekon@ti.com, computersforpeace@gmail.com, dwmw2@infradead.org List-Id: Linux MTD discussion mailing list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Populate the standard PM call-backs for; suspend, resume and restore. Signed-off-by: Lee Jones q --- drivers/mtd/nand/stm_nand_bch.c | 39 +++++++++++++++++++++++++++++++++++++++ 1 file changed, 39 insertions(+) diff --git a/drivers/mtd/nand/stm_nand_bch.c b/drivers/mtd/nand/stm_nand_bch.c index 8ab8e7b..e1ebf92 100644 --- a/drivers/mtd/nand/stm_nand_bch.c +++ b/drivers/mtd/nand/stm_nand_bch.c @@ -415,12 +415,51 @@ static int stm_nand_bch_remove(struct platform_device *pdev) return 0; } +#ifdef CONFIG_PM +static int stm_nand_bch_suspend(struct device *dev) +{ + struct nandi_controller *nandi = dev_get_drvdata(dev); + + nandi_clk_disable(nandi); + + return 0; +} +static int stm_nand_bch_resume(struct device *dev) +{ + struct nandi_controller *nandi = dev_get_drvdata(dev); + + nandi_clk_enable(nandi); + + return 0; +} + +static int stm_nand_bch_restore(struct device *dev) +{ + struct nandi_controller *nandi = dev_get_drvdata(dev); + struct stm_plat_nand_bch_data *pdata = dev->platform_data; + struct stm_nand_bank_data *bank = pdata->bank; + + nandi_init_controller(nandi, bank->csn); + + return 0; +} + +static const struct dev_pm_ops stm_nand_bch_pm_ops = { + .suspend = stm_nand_bch_suspend, + .resume = stm_nand_bch_resume, + .restore = stm_nand_bch_restore, +}; +#else +static const struct dev_pm_ops stm_nand_bch_pm_ops; +#endif + static struct platform_driver stm_nand_bch_driver = { .probe = stm_nand_bch_probe , .remove = stm_nand_bch_remove, .driver = { .name = "stm-nand-bch", .owner = THIS_MODULE, + .pm = &stm_nand_bch_pm_ops, }, }; module_platform_driver(stm_nand_bch_driver); -- 1.8.3.2