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Message-ID: <20160608104923.GA14888@dell>
Date: Wed, 8 Jun 2016 11:49:23 +0100
From: Lee Jones <lee.jones@...aro.org>
To: Arnd Bergmann <arnd@...db.de>
Cc: Linus Walleij <linus.walleij@...aro.org>,
linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 4/4] mfd: db8500 stop passing around platform data
On Tue, 10 May 2016, Arnd Bergmann wrote:
> Except for the constant DB8500_PRCMU_FW_VERSION_OFFSET number, nothing
> is ever passed through the platform data and used in a driver, so we
> can simply stop passing it around.
>
> Signed-off-by: Arnd Bergmann <arnd@...db.de>
> ---
> arch/arm/mach-ux500/cpu-db8500.c | 17 ++--------------
> arch/arm/mach-ux500/setup.h | 1 -
> drivers/mfd/ab8500-core.c | 4 ----
> drivers/mfd/ab8500-sysctrl.c | 34 -------------------------------
> drivers/mfd/db8500-prcmu.c | 10 +++------
> include/linux/mfd/abx500/ab8500-sysctrl.h | 6 ------
> include/linux/mfd/dbx500-prcmu.h | 10 ---------
> 7 files changed, 5 insertions(+), 77 deletions(-)
Linus,
Do you want to take a look at this?
> diff --git a/arch/arm/mach-ux500/cpu-db8500.c b/arch/arm/mach-ux500/cpu-db8500.c
> index c015ef8dd535..bbd1b4b8d441 100644
> --- a/arch/arm/mach-ux500/cpu-db8500.c
> +++ b/arch/arm/mach-ux500/cpu-db8500.c
> @@ -16,8 +16,6 @@
> #include <linux/irq.h>
> #include <linux/platform_device.h>
> #include <linux/io.h>
> -#include <linux/mfd/abx500/ab8500.h>
> -#include <linux/mfd/dbx500-prcmu.h>
> #include <linux/of.h>
> #include <linux/of_platform.h>
> #include <linux/perf/arm_pmu.h>
> @@ -32,15 +30,6 @@
> #include "db8500-regs.h"
> #include "id.h"
>
> -static struct ab8500_platform_data ab8500_platdata = {
> -};
> -
> -static struct prcmu_pdata db8500_prcmu_pdata = {
> - .ab_platdata = &ab8500_platdata,
> - .version_offset = DB8500_PRCMU_FW_VERSION_OFFSET,
> - .legacy_offset = DB8500_PRCMU_LEGACY_OFFSET,
> -};
> -
> static void __init u8500_map_io(void)
> {
> debug_ll_io_init();
> @@ -109,8 +98,7 @@ static struct of_dev_auxdata u8500_auxdata_lookup[] __initdata = {
> OF_DEV_AUXDATA("stericsson,ux500-msp-i2s", 0x80125000,
> "ux500-msp-i2s.3", &msp3_platform_data),
> /* Requires non-DT:able platform data. */
> - OF_DEV_AUXDATA("stericsson,db8500-prcmu", 0x80157000, "db8500-prcmu",
> - &db8500_prcmu_pdata),
> + OF_DEV_AUXDATA("stericsson,db8500-prcmu", 0x80157000, "db8500-prcmu", NULL),
> OF_DEV_AUXDATA("stericsson,ux500-cryp", 0xa03cb000, "cryp1", NULL),
> OF_DEV_AUXDATA("stericsson,ux500-hash", 0xa03c2000, "hash1", NULL),
> OF_DEV_AUXDATA("stericsson,snd-soc-mop500", 0, "snd-soc-mop500.0",
> @@ -119,8 +107,7 @@ static struct of_dev_auxdata u8500_auxdata_lookup[] __initdata = {
> };
>
> static struct of_dev_auxdata u8540_auxdata_lookup[] __initdata = {
> - OF_DEV_AUXDATA("stericsson,db8500-prcmu", 0x80157000, "db8500-prcmu",
> - &db8500_prcmu_pdata),
> + OF_DEV_AUXDATA("stericsson,db8500-prcmu", 0x80157000, "db8500-prcmu", NULL),
> {},
> };
>
> diff --git a/arch/arm/mach-ux500/setup.h b/arch/arm/mach-ux500/setup.h
> index c704254ab67c..e606847c8b58 100644
> --- a/arch/arm/mach-ux500/setup.h
> +++ b/arch/arm/mach-ux500/setup.h
> @@ -13,7 +13,6 @@
>
> #include <asm/mach/arch.h>
> #include <linux/init.h>
> -#include <linux/mfd/abx500/ab8500.h>
>
> void ux500_restart(enum reboot_mode mode, const char *cmd);
>
> diff --git a/drivers/mfd/ab8500-core.c b/drivers/mfd/ab8500-core.c
> index f3d689176fc2..589eebfc13df 100644
> --- a/drivers/mfd/ab8500-core.c
> +++ b/drivers/mfd/ab8500-core.c
> @@ -1087,7 +1087,6 @@ static int ab8500_probe(struct platform_device *pdev)
> "Vbus Detect (USB)",
> "USB ID Detect",
> "UART Factory Mode Detect"};
> - struct ab8500_platform_data *plat = dev_get_platdata(&pdev->dev);
> const struct platform_device_id *platid = platform_get_device_id(pdev);
> enum ab8500_version version = AB8500_VERSION_UNDEFINED;
> struct device_node *np = pdev->dev.of_node;
> @@ -1219,9 +1218,6 @@ static int ab8500_probe(struct platform_device *pdev)
> pr_cont("None\n");
> }
>
> - if (plat && plat->init)
> - plat->init(ab8500);
> -
> if (is_ab9540(ab8500)) {
> ret = get_register_interruptible(ab8500, AB8500_CHARGER,
> AB8500_CH_USBCH_STAT1_REG, &value);
> diff --git a/drivers/mfd/ab8500-sysctrl.c b/drivers/mfd/ab8500-sysctrl.c
> index b9f0010309f9..207cc497958a 100644
> --- a/drivers/mfd/ab8500-sysctrl.c
> +++ b/drivers/mfd/ab8500-sysctrl.c
> @@ -127,45 +127,11 @@ EXPORT_SYMBOL(ab8500_sysctrl_write);
>
> static int ab8500_sysctrl_probe(struct platform_device *pdev)
> {
> - struct ab8500 *ab8500 = dev_get_drvdata(pdev->dev.parent);
> - struct ab8500_platform_data *plat;
> - struct ab8500_sysctrl_platform_data *pdata;
> -
> - plat = dev_get_platdata(pdev->dev.parent);
> -
> - if (!plat)
> - return -EINVAL;
> -
> sysctrl_dev = &pdev->dev;
>
> if (!pm_power_off)
> pm_power_off = ab8500_power_off;
>
> - pdata = plat->sysctrl;
> - if (pdata) {
> - int last, ret, i, j;
> -
> - if (is_ab8505(ab8500))
> - last = AB8500_SYSCLKREQ4RFCLKBUF;
> - else
> - last = AB8500_SYSCLKREQ8RFCLKBUF;
> -
> - for (i = AB8500_SYSCLKREQ1RFCLKBUF; i <= last; i++) {
> - j = i - AB8500_SYSCLKREQ1RFCLKBUF;
> - ret = ab8500_sysctrl_write(i, 0xff,
> - pdata->initial_req_buf_config[j]);
> - dev_dbg(&pdev->dev,
> - "Setting SysClkReq%dRfClkBuf 0x%X\n",
> - j + 1,
> - pdata->initial_req_buf_config[j]);
> - if (ret < 0) {
> - dev_err(&pdev->dev,
> - "Can't set sysClkReq%dRfClkBuf: %d\n",
> - j + 1, ret);
> - }
> - }
> - }
> -
> return 0;
> }
>
> diff --git a/drivers/mfd/db8500-prcmu.c b/drivers/mfd/db8500-prcmu.c
> index c0a86aeb1733..388e268b9bcf 100644
> --- a/drivers/mfd/db8500-prcmu.c
> +++ b/drivers/mfd/db8500-prcmu.c
> @@ -3094,8 +3094,7 @@ static void db8500_prcmu_update_cpufreq(void)
> }
> }
>
> -static int db8500_prcmu_register_ab8500(struct device *parent,
> - struct ab8500_platform_data *pdata)
> +static int db8500_prcmu_register_ab8500(struct device *parent)
> {
> struct device_node *np;
> struct resource ab8500_resource;
> @@ -3103,8 +3102,6 @@ static int db8500_prcmu_register_ab8500(struct device *parent,
> .name = "ab8500-core",
> .of_compatible = "stericsson,ab8500",
> .id = AB8500_VERSION_AB8500,
> - .platform_data = pdata,
> - .pdata_size = sizeof(struct ab8500_platform_data),
> .resources = &ab8500_resource,
> .num_resources = 1,
> };
> @@ -3133,7 +3130,6 @@ static int db8500_prcmu_register_ab8500(struct device *parent,
> static int db8500_prcmu_probe(struct platform_device *pdev)
> {
> struct device_node *np = pdev->dev.of_node;
> - struct prcmu_pdata *pdata = dev_get_platdata(&pdev->dev);
> int irq = 0, err = 0;
> struct resource *res;
>
> @@ -3149,7 +3145,7 @@ static int db8500_prcmu_probe(struct platform_device *pdev)
> return -ENOMEM;
> }
> init_prcm_registers();
> - dbx500_fw_version_init(pdev, pdata->version_offset);
> + dbx500_fw_version_init(pdev, DB8500_PRCMU_FW_VERSION_OFFSET);
> res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "prcmu-tcdm");
> if (!res) {
> dev_err(&pdev->dev, "no prcmu tcdm region provided\n");
> @@ -3204,7 +3200,7 @@ static int db8500_prcmu_probe(struct platform_device *pdev)
> }
> }
>
> - err = db8500_prcmu_register_ab8500(&pdev->dev, pdata->ab_platdata);
> + err = db8500_prcmu_register_ab8500(&pdev->dev);
> if (err) {
> mfd_remove_devices(&pdev->dev);
> pr_err("prcmu: Failed to add ab8500 subdevice\n");
> diff --git a/include/linux/mfd/abx500/ab8500-sysctrl.h b/include/linux/mfd/abx500/ab8500-sysctrl.h
> index 689312745b2f..01024d1aed0e 100644
> --- a/include/linux/mfd/abx500/ab8500-sysctrl.h
> +++ b/include/linux/mfd/abx500/ab8500-sysctrl.h
> @@ -37,12 +37,6 @@ static inline int ab8500_sysctrl_clear(u16 reg, u8 bits)
> return ab8500_sysctrl_write(reg, bits, 0);
> }
>
> -/* Configuration data for SysClkReq1RfClkBuf - SysClkReq8RfClkBuf */
> -struct ab8500_sysctrl_platform_data {
> - u8 initial_req_buf_config[8];
> - u16 (*reboot_reason_code)(const char *cmd);
> -};
> -
> /* Registers */
> #define AB8500_TURNONSTATUS 0x100
> #define AB8500_RESETSTATUS 0x101
> diff --git a/include/linux/mfd/dbx500-prcmu.h b/include/linux/mfd/dbx500-prcmu.h
> index bf5109d38a26..5d374601404c 100644
> --- a/include/linux/mfd/dbx500-prcmu.h
> +++ b/include/linux/mfd/dbx500-prcmu.h
> @@ -178,16 +178,6 @@ enum ddr_pwrst {
>
> #define DB8500_PRCMU_LEGACY_OFFSET 0xDD4
>
> -struct prcmu_pdata
> -{
> - bool enable_set_ddr_opp;
> - bool enable_ape_opp_100_voltage;
> - struct ab8500_platform_data *ab_platdata;
> - u32 version_offset;
> - u32 legacy_offset;
> - u32 adt_offset;
> -};
> -
> #define PRCMU_FW_PROJECT_U8500 2
> #define PRCMU_FW_PROJECT_U8400 3
> #define PRCMU_FW_PROJECT_U9500 4 /* Customer specific */
--
Lee Jones
Linaro STMicroelectronics Landing Team Lead
Linaro.org │ Open source software for ARM SoCs
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