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Thu, 09 Apr 2020 12:12:42 -0700 From: Jolly Shah To: ard.biesheuvel@linaro.org, mingo@kernel.org, gregkh@linuxfoundation.org, matt@codeblueprint.co.uk, sudeep.holla@arm.com, hkallweit1@gmail.com, keescook@chromium.org, dmitry.torokhov@gmail.com, michal.simek@xilinx.com Cc: rajanv@xilinx.com, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, Rajan Vaja , Jolly Shah Subject: [PATCH v4 11/25] firmware: xilinx: Use APIs instead of IOCTLs Date: Thu, 9 Apr 2020 12:12:00 -0700 Message-Id: <1586459534-8997-12-git-send-email-jolly.shah@xilinx.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1586459534-8997-1-git-send-email-jolly.shah@xilinx.com> References: <1586459534-8997-1-git-send-email-jolly.shah@xilinx.com> X-TM-AS-Product-Ver: IMSS-7.1.0.1224-8.2.0.1013-23620.005 X-TM-AS-User-Approved-Sender: Yes;Yes X-EOPAttributedMessage: 0 X-MS-Office365-Filtering-HT: Tenant X-Forefront-Antispam-Report: CIP:149.199.60.83;CTRY:US;LANG:en;SCL:1;SRV:;IPV:NLI;SFV:NSPM;H:xsj-pvapsmtpgw01;PTR:unknown-60-83.xilinx.com;CAT:NONE;SFTY:;SFS:(10009020)(4636009)(136003)(346002)(396003)(376002)(39860400002)(46966005)(82740400003)(478600001)(336012)(54906003)(4326008)(36756003)(107886003)(26005)(186003)(316002)(70206006)(6636002)(2616005)(9786002)(426003)(81166007)(7416002)(2906002)(5660300002)(8676002)(7696005)(30864003)(6666004)(47076004)(356004)(44832011)(70586007)(8936002)(81156014);DIR:OUT;SFP:1101; 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Signed-off-by: Rajan Vaja Signed-off-by: Jolly Shah --- drivers/clk/zynqmp/pll.c | 14 ++--- drivers/firmware/xilinx/zynqmp.c | 118 ++++++++++++++++++++++++++--------- drivers/mmc/host/sdhci-of-arasan.c | 38 +---------- include/linux/firmware/xlnx-zynqmp.h | 31 ++++++++- 4 files changed, 126 insertions(+), 75 deletions(-) diff --git a/drivers/clk/zynqmp/pll.c b/drivers/clk/zynqmp/pll.c index 73fb5bb..92f449e 100644 --- a/drivers/clk/zynqmp/pll.c +++ b/drivers/clk/zynqmp/pll.c @@ -50,10 +50,8 @@ static inline enum pll_mode zynqmp_pll_get_mode(struct clk_hw *hw) const char *clk_name = clk_hw_get_name(hw); u32 ret_payload[PAYLOAD_ARG_CNT]; int ret; - const struct zynqmp_eemi_ops *eemi_ops = zynqmp_pm_get_eemi_ops(); - ret = eemi_ops->ioctl(0, IOCTL_GET_PLL_FRAC_MODE, clk_id, 0, - ret_payload); + ret = zynqmp_pm_get_pll_frac_mode(clk_id, ret_payload); if (ret) pr_warn_once("%s() PLL get frac mode failed for %s, ret = %d\n", __func__, clk_name, ret); @@ -73,14 +71,13 @@ static inline void zynqmp_pll_set_mode(struct clk_hw *hw, bool on) const char *clk_name = clk_hw_get_name(hw); int ret; u32 mode; - const struct zynqmp_eemi_ops *eemi_ops = zynqmp_pm_get_eemi_ops(); if (on) mode = PLL_MODE_FRAC; else mode = PLL_MODE_INT; - ret = eemi_ops->ioctl(0, IOCTL_SET_PLL_FRAC_MODE, clk_id, mode, NULL); + ret = zynqmp_pm_set_pll_frac_mode(clk_id, mode); if (ret) pr_warn_once("%s() PLL set frac mode failed for %s, ret = %d\n", __func__, clk_name, ret); @@ -139,7 +136,6 @@ static unsigned long zynqmp_pll_recalc_rate(struct clk_hw *hw, unsigned long rate, frac; u32 ret_payload[PAYLOAD_ARG_CNT]; int ret; - const struct zynqmp_eemi_ops *eemi_ops = zynqmp_pm_get_eemi_ops(); ret = zynqmp_pm_clock_getdivider(clk_id, &fbdiv); if (ret) @@ -148,8 +144,7 @@ static unsigned long zynqmp_pll_recalc_rate(struct clk_hw *hw, rate = parent_rate * fbdiv; if (zynqmp_pll_get_mode(hw) == PLL_MODE_FRAC) { - eemi_ops->ioctl(0, IOCTL_GET_PLL_FRAC_DATA, clk_id, 0, - ret_payload); + zynqmp_pm_get_pll_frac_data(clk_id, ret_payload); data = ret_payload[1]; frac = (parent_rate * data) / FRAC_DIV; rate = rate + frac; @@ -177,7 +172,6 @@ static int zynqmp_pll_set_rate(struct clk_hw *hw, unsigned long rate, u32 fbdiv; long rate_div, frac, m, f; int ret; - const struct zynqmp_eemi_ops *eemi_ops = zynqmp_pm_get_eemi_ops(); if (zynqmp_pll_get_mode(hw) == PLL_MODE_FRAC) { rate_div = (rate * FRAC_DIV) / parent_rate; @@ -194,7 +188,7 @@ static int zynqmp_pll_set_rate(struct clk_hw *hw, unsigned long rate, else if (ret) pr_warn_once("%s() set divider failed for %s, ret = %d\n", __func__, clk_name, ret); - eemi_ops->ioctl(0, IOCTL_SET_PLL_FRAC_DATA, clk_id, f, NULL); + zynqmp_pm_set_pll_frac_data(clk_id, f); return rate + frac; } diff --git a/drivers/firmware/xilinx/zynqmp.c b/drivers/firmware/xilinx/zynqmp.c index b0aa967..94fd755 100644 --- a/drivers/firmware/xilinx/zynqmp.c +++ b/drivers/firmware/xilinx/zynqmp.c @@ -516,47 +516,108 @@ int zynqmp_pm_clock_getparent(u32 clock_id, u32 *parent_id) EXPORT_SYMBOL_GPL(zynqmp_pm_clock_getparent); /** - * zynqmp_is_valid_ioctl() - Check whether IOCTL ID is valid or not - * @ioctl_id: IOCTL ID + * zynqmp_pm_set_pll_frac_mode() - PM API for set PLL mode * - * Return: 1 if IOCTL is valid else 0 + * @clk_id: PLL clock ID + * @mode: PLL mode (PLL_MODE_FRAC/PLL_MODE_INT) + * + * This function sets PLL mode + * + * Return: Returns status, either success or error+reason */ -static inline int zynqmp_is_valid_ioctl(u32 ioctl_id) +int zynqmp_pm_set_pll_frac_mode(u32 clk_id, u32 mode) { - switch (ioctl_id) { - case IOCTL_SD_DLL_RESET: - case IOCTL_SET_SD_TAPDELAY: - case IOCTL_SET_PLL_FRAC_MODE: - case IOCTL_GET_PLL_FRAC_MODE: - case IOCTL_SET_PLL_FRAC_DATA: - case IOCTL_GET_PLL_FRAC_DATA: - return 1; - default: - return 0; - } + return zynqmp_pm_invoke_fn(PM_IOCTL, 0, IOCTL_SET_PLL_FRAC_MODE, + clk_id, mode, NULL); } +EXPORT_SYMBOL_GPL(zynqmp_pm_set_pll_frac_mode); /** - * zynqmp_pm_ioctl() - PM IOCTL API for device control and configs - * @node_id: Node ID of the device - * @ioctl_id: ID of the requested IOCTL - * @arg1: Argument 1 to requested IOCTL call - * @arg2: Argument 2 to requested IOCTL call - * @out: Returned output value + * zynqmp_pm_get_pll_frac_mode() - PM API for get PLL mode + * + * @clk_id: PLL clock ID + * @mode: PLL mode * - * This function calls IOCTL to firmware for device control and configuration. + * This function return current PLL mode * * Return: Returns status, either success or error+reason */ -static int zynqmp_pm_ioctl(u32 node_id, u32 ioctl_id, u32 arg1, u32 arg2, - u32 *out) +int zynqmp_pm_get_pll_frac_mode(u32 clk_id, u32 *mode) { - if (!zynqmp_is_valid_ioctl(ioctl_id)) - return -EINVAL; + return zynqmp_pm_invoke_fn(PM_IOCTL, 0, IOCTL_GET_PLL_FRAC_MODE, + clk_id, 0, mode); +} +EXPORT_SYMBOL_GPL(zynqmp_pm_get_pll_frac_mode); + +/** + * zynqmp_pm_set_pll_frac_data() - PM API for setting pll fraction data + * + * @clk_id: PLL clock ID + * @data: fraction data + * + * This function sets fraction data. + * It is valid for fraction mode only. + * + * Return: Returns status, either success or error+reason + */ +int zynqmp_pm_set_pll_frac_data(u32 clk_id, u32 data) +{ + return zynqmp_pm_invoke_fn(PM_IOCTL, 0, IOCTL_SET_PLL_FRAC_DATA, + clk_id, data, NULL); +} +EXPORT_SYMBOL_GPL(zynqmp_pm_set_pll_frac_data); + +/** + * zynqmp_pm_get_pll_frac_data() - PM API for getting pll fraction data + * + * @clk_id: PLL clock ID + * @data: fraction data + * + * This function returns fraction data value. + * + * Return: Returns status, either success or error+reason + */ +int zynqmp_pm_get_pll_frac_data(u32 clk_id, u32 *data) +{ + return zynqmp_pm_invoke_fn(PM_IOCTL, 0, IOCTL_GET_PLL_FRAC_DATA, + clk_id, 0, data); +} +EXPORT_SYMBOL_GPL(zynqmp_pm_get_pll_frac_data); - return zynqmp_pm_invoke_fn(PM_IOCTL, node_id, ioctl_id, - arg1, arg2, out); +/** + * zynqmp_pm_set_sd_tapdelay() - Set tap delay for the SD device + * + * @node_id Node ID of the device + * @type Type of tap delay to set (input/output) + * @value Value to set fot the tap delay + * + * This function sets input/output tap delay for the SD device. + * + * @return Returns status, either success or error+reason + */ +int zynqmp_pm_set_sd_tapdelay(u32 node_id, u32 type, u32 value) +{ + return zynqmp_pm_invoke_fn(PM_IOCTL, node_id, IOCTL_SET_SD_TAPDELAY, + type, value, NULL); +} +EXPORT_SYMBOL_GPL(zynqmp_pm_set_sd_tapdelay); + +/** + * zynqmp_pm_sd_dll_reset() - Reset DLL logic + * + * @node_id Node ID of the device + * @type Reset type + * + * This function resets DLL logic for the SD device. + * + * @return Returns status, either success or error+reason + */ +int zynqmp_pm_sd_dll_reset(u32 node_id, u32 type) +{ + return zynqmp_pm_invoke_fn(PM_IOCTL, node_id, IOCTL_SET_SD_TAPDELAY, + type, 0, NULL); } +EXPORT_SYMBOL_GPL(zynqmp_pm_sd_dll_reset); /** * zynqmp_pm_reset_assert - Request setting of reset (1 - assert, 0 - release) @@ -746,7 +807,6 @@ static int zynqmp_pm_aes_engine(const u64 address, u32 *out) } static const struct zynqmp_eemi_ops eemi_ops = { - .ioctl = zynqmp_pm_ioctl, .reset_assert = zynqmp_pm_reset_assert, .reset_get_status = zynqmp_pm_reset_get_status, .init_finalize = zynqmp_pm_init_finalize, diff --git a/drivers/mmc/host/sdhci-of-arasan.c b/drivers/mmc/host/sdhci-of-arasan.c index d4905c1..d01f762 100644 --- a/drivers/mmc/host/sdhci-of-arasan.c +++ b/drivers/mmc/host/sdhci-of-arasan.c @@ -98,10 +98,6 @@ struct sdhci_arasan_clk_data { void *clk_of_data; }; -struct sdhci_arasan_zynqmp_clk_data { - const struct zynqmp_eemi_ops *eemi_ops; -}; - /** * struct sdhci_arasan_data * @host: Pointer to the main SDHCI host structure. @@ -630,9 +626,6 @@ static int sdhci_zynqmp_sdcardclk_set_phase(struct clk_hw *hw, int degrees) struct sdhci_arasan_data *sdhci_arasan = container_of(clk_data, struct sdhci_arasan_data, clk_data); struct sdhci_host *host = sdhci_arasan->host; - struct sdhci_arasan_zynqmp_clk_data *zynqmp_clk_data = - clk_data->clk_of_data; - const struct zynqmp_eemi_ops *eemi_ops = zynqmp_clk_data->eemi_ops; const char *clk_name = clk_hw_get_name(hw); u32 node_id = !strcmp(clk_name, "clk_out_sd0") ? NODE_SD_0 : NODE_SD_1; u8 tap_delay, tap_max = 0; @@ -672,8 +665,7 @@ static int sdhci_zynqmp_sdcardclk_set_phase(struct clk_hw *hw, int degrees) tap_delay = (degrees * tap_max) / 360; /* Set the Clock Phase */ - ret = eemi_ops->ioctl(node_id, IOCTL_SET_SD_TAPDELAY, - PM_TAPDELAY_OUTPUT, tap_delay, NULL); + ret = zynqmp_pm_set_sd_tapdelay(node_id, PM_TAPDELAY_OUTPUT, tap_delay); if (ret) pr_err("Error setting Output Tap Delay\n"); @@ -702,9 +694,6 @@ static int sdhci_zynqmp_sampleclk_set_phase(struct clk_hw *hw, int degrees) struct sdhci_arasan_data *sdhci_arasan = container_of(clk_data, struct sdhci_arasan_data, clk_data); struct sdhci_host *host = sdhci_arasan->host; - struct sdhci_arasan_zynqmp_clk_data *zynqmp_clk_data = - clk_data->clk_of_data; - const struct zynqmp_eemi_ops *eemi_ops = zynqmp_clk_data->eemi_ops; const char *clk_name = clk_hw_get_name(hw); u32 node_id = !strcmp(clk_name, "clk_in_sd0") ? NODE_SD_0 : NODE_SD_1; u8 tap_delay, tap_max = 0; @@ -744,8 +733,7 @@ static int sdhci_zynqmp_sampleclk_set_phase(struct clk_hw *hw, int degrees) tap_delay = (degrees * tap_max) / 360; /* Set the Clock Phase */ - ret = eemi_ops->ioctl(node_id, IOCTL_SET_SD_TAPDELAY, - PM_TAPDELAY_INPUT, tap_delay, NULL); + ret = zynqmp_pm_set_sd_tapdelay(node_id, PM_TAPDELAY_INPUT, tap_delay); if (ret) pr_err("Error setting Input Tap Delay\n"); @@ -759,11 +747,6 @@ static const struct clk_ops zynqmp_sampleclk_ops = { static void arasan_zynqmp_dll_reset(struct sdhci_host *host, u32 deviceid) { - struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host); - struct sdhci_arasan_data *sdhci_arasan = sdhci_pltfm_priv(pltfm_host); - struct sdhci_arasan_zynqmp_clk_data *zynqmp_clk_data = - sdhci_arasan->clk_data.clk_of_data; - const struct zynqmp_eemi_ops *eemi_ops = zynqmp_clk_data->eemi_ops; u16 clk; clk = sdhci_readw(host, SDHCI_CLOCK_CONTROL); @@ -771,8 +754,7 @@ static void arasan_zynqmp_dll_reset(struct sdhci_host *host, u32 deviceid) sdhci_writew(host, clk, SDHCI_CLOCK_CONTROL); /* Issue DLL Reset */ - eemi_ops->ioctl(deviceid, IOCTL_SD_DLL_RESET, - PM_DLL_RESET_PULSE, 0, NULL); + zynqmp_pm_sd_dll_reset(deviceid, PM_DLL_RESET_PULSE); clk = sdhci_readw(host, SDHCI_CLOCK_CONTROL); @@ -1277,20 +1259,6 @@ static int sdhci_arasan_probe(struct platform_device *pdev) goto clk_disable_all; if (of_device_is_compatible(np, "xlnx,zynqmp-8.9a")) { - struct sdhci_arasan_zynqmp_clk_data *zynqmp_clk_data; - const struct zynqmp_eemi_ops *eemi_ops; - - zynqmp_clk_data = devm_kzalloc(&pdev->dev, - sizeof(*zynqmp_clk_data), - GFP_KERNEL); - eemi_ops = zynqmp_pm_get_eemi_ops(); - if (IS_ERR(eemi_ops)) { - ret = PTR_ERR(eemi_ops); - goto unreg_clk; - } - - zynqmp_clk_data->eemi_ops = eemi_ops; - sdhci_arasan->clk_data.clk_of_data = zynqmp_clk_data; host->mmc_host_ops.execute_tuning = arasan_zynqmp_execute_tuning; } diff --git a/include/linux/firmware/xlnx-zynqmp.h b/include/linux/firmware/xlnx-zynqmp.h index 7abb683..5aff896 100644 --- a/include/linux/firmware/xlnx-zynqmp.h +++ b/include/linux/firmware/xlnx-zynqmp.h @@ -296,7 +296,6 @@ struct zynqmp_pm_query_data { struct zynqmp_eemi_ops { int (*fpga_load)(const u64 address, const u32 size, const u32 flags); int (*fpga_get_status)(u32 *value); - int (*ioctl)(u32 node_id, u32 ioctl_id, u32 arg1, u32 arg2, u32 *out); int (*reset_assert)(const enum zynqmp_pm_reset reset, const enum zynqmp_pm_reset_action assert_flag); int (*reset_get_status)(const enum zynqmp_pm_reset reset, u32 *status); @@ -331,6 +330,12 @@ int zynqmp_pm_clock_setrate(u32 clock_id, u64 rate); int zynqmp_pm_clock_getrate(u32 clock_id, u64 *rate); int zynqmp_pm_clock_setparent(u32 clock_id, u32 parent_id); int zynqmp_pm_clock_getparent(u32 clock_id, u32 *parent_id); +int zynqmp_pm_set_pll_frac_mode(u32 clk_id, u32 mode); +int zynqmp_pm_get_pll_frac_mode(u32 clk_id, u32 *mode); +int zynqmp_pm_set_pll_frac_data(u32 clk_id, u32 data); +int zynqmp_pm_get_pll_frac_data(u32 clk_id, u32 *data); +int zynqmp_pm_set_sd_tapdelay(u32 node_id, u32 type, u32 value); +int zynqmp_pm_sd_dll_reset(u32 node_id, u32 type); #else static inline struct zynqmp_eemi_ops *zynqmp_pm_get_eemi_ops(void) { @@ -385,6 +390,30 @@ static inline int zynqmp_pm_clock_getparent(u32 clock_id, u32 *parent_id) { return -ENODEV; } +static inline int zynqmp_pm_set_pll_frac_mode(u32 clk_id, u32 mode) +{ + return -ENODEV; +} +static inline int zynqmp_pm_get_pll_frac_mode(u32 clk_id, u32 *mode) +{ + return -ENODEV; +} +static inline int zynqmp_pm_set_pll_frac_data(u32 clk_id, u32 data) +{ + return -ENODEV; +} +static inline int zynqmp_pm_get_pll_frac_data(u32 clk_id, u32 *data) +{ + return -ENODEV; +} +static inline int zynqmp_pm_set_sd_tapdelay(u32 node_id, u32 type, u32 value) +{ + return -ENODEV; +} +static inline int zynqmp_pm_sd_dll_reset(u32 node_id, u32 type) +{ + return -ENODEV; +} #endif #endif /* __FIRMWARE_ZYNQMP_H__ */ -- 2.7.4