pinctrl: sh-pfc: checker: Add check for config register conflicts (3c261864) · Commits · 戴 / test

drivers/pinctrl/sh-pfc/core.c

+32 −0

Original line number	Diff line number	Diff line
		@@ -726,8 +726,12 @@ static int sh_pfc_suspend_init(struct sh_pfc *pfc) { return 0; }
		#endif /* CONFIG_PM_SLEEP && CONFIG_ARM_PSCI_FW */

		#ifdef DEBUG
		#define SH_PFC_MAX_REGS 300

		static unsigned int sh_pfc_errors __initdata = 0;
		static unsigned int sh_pfc_warnings __initdata = 0;
		static u32 *sh_pfc_regs __initdata = NULL;
		static u32 sh_pfc_num_regs __initdata = 0;

		#define sh_pfc_err(fmt, ...) \
		do { \
		@@ -759,11 +763,31 @@ static bool __init same_name(const char a, const char b)
		return !strcmp(a, b);
		}

		static void __init sh_pfc_check_reg(const char *drvname, u32 reg)
		{
		unsigned int i;

		for (i = 0; i < sh_pfc_num_regs; i++)
		if (reg == sh_pfc_regs[i]) {
		sh_pfc_err("reg 0x%x conflict\n", reg);
		return;
		}

		if (sh_pfc_num_regs == SH_PFC_MAX_REGS) {
		pr_warn_once("%s: Please increase SH_PFC_MAX_REGS\n", drvname);
		return;
		}

		sh_pfc_regs[sh_pfc_num_regs++] = reg;
		}

		static void __init sh_pfc_check_cfg_reg(const char *drvname,
		const struct pinmux_cfg_reg *cfg_reg)
		{
		unsigned int i, n, rw, fw;

		sh_pfc_check_reg(drvname, cfg_reg->reg);

		if (cfg_reg->field_width) {
		/* Checked at build time */
		return;
		@@ -794,6 +818,7 @@ static void __init sh_pfc_check_info(const struct sh_pfc_soc_info *info)
		unsigned int i, j, k;

		pr_info("Checking %s\n", drvname);
		sh_pfc_num_regs = 0;

		/* Check pins */
		for (i = 0; i < info->nr_pins; i++) {
		@@ -868,6 +893,11 @@ static void __init sh_pfc_check_driver(const struct platform_driver *pdrv)
		{
		unsigned int i;

		sh_pfc_regs = kcalloc(SH_PFC_MAX_REGS, sizeof(*sh_pfc_regs),
		GFP_KERNEL);
		if (!sh_pfc_regs)
		return;

		pr_warn("Checking builtin pinmux tables\n");

		for (i = 0; pdrv->id_table[i].name[0]; i++)
		@@ -880,6 +910,8 @@ static void __init sh_pfc_check_driver(const struct platform_driver *pdrv)

		pr_warn("Detected %u errors and %u warnings\n", sh_pfc_errors,
		sh_pfc_warnings);

		kfree(sh_pfc_regs);
		}

		#else /* !DEBUG */

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