x86/platform/intel/pmc_atom: Supply register mappings via PMC object

The patch converts the functions to use the register mappings
provided by PMC object. It would help in case of mappings on
different platforms.

Signed-off-by: Andy Shevchenko <[e-mail]>
Cc: Aubrey Li <[e-mail]>
Cc: Rafael J . Wysocki <[e-mail]>
Cc: Kumar P Mahesh <[e-mail]>
Link: http://lkml.kernel.org/r/[e-mail]
Signed-off-by: Ingo Molnar <[e-mail]>

arch/x86/kernel/pmc_atom.c

···
 
 #include <asm/pmc_atom.h>
 
+struct pmc_bit_map {
+	const char *name;
+	u32 bit_mask;
+};
+
+struct pmc_reg_map {
+	const struct pmc_bit_map *dev;
+	const struct pmc_bit_map *pss;
+};
+
 struct pmc_dev {
 	u32 base_addr;
 	void __iomem *regmap;
+	const struct pmc_reg_map *map;
 #ifdef CONFIG_DEBUG_FS
 	struct dentry *dbgfs_dir;
 #endif /* CONFIG_DEBUG_FS */
···
 
 static struct pmc_dev pmc_device;
 static u32 acpi_base_addr;
-
-struct pmc_bit_map {
-	const char *name;
-	u32 bit_mask;
-};
 
 static const struct pmc_bit_map dev_map[] = {
 	{"LPSS1_F0_DMA",	BIT_LPSS1_F0_DMA},
···
 	{"USB",			PMC_PSS_BIT_USB},
 	{"USB_SUS",		PMC_PSS_BIT_USB_SUS},
 	{},
+};
+
+static const struct pmc_reg_map reg_map = {
+	.dev		= dev_map,
+	.pss		= pss_map,
 };
 
 static inline u32 pmc_reg_read(struct pmc_dev *pmc, int reg_offset)
···
 static int pmc_dev_state_show(struct seq_file *s, void *unused)
 {
 	struct pmc_dev *pmc = s->private;
+	const struct pmc_bit_map *map = pmc->map->dev;
 	u32 func_dis, func_dis_2, func_dis_index;
 	u32 d3_sts_0, d3_sts_1, d3_sts_index;
-	int dev_index, reg_index;
+	int index, reg_index;
 
 	func_dis = pmc_reg_read(pmc, PMC_FUNC_DIS);
 	func_dis_2 = pmc_reg_read(pmc, PMC_FUNC_DIS_2);
 	d3_sts_0 = pmc_reg_read(pmc, PMC_D3_STS_0);
 	d3_sts_1 = pmc_reg_read(pmc, PMC_D3_STS_1);
 
-	for (dev_index = 0; dev_map[dev_index].name; dev_index++) {
-		reg_index = dev_index / PMC_REG_BIT_WIDTH;
+	for (index = 0; map[index].name; index++) {
+		reg_index = index / PMC_REG_BIT_WIDTH;
 		if (reg_index) {
 			func_dis_index = func_dis_2;
 			d3_sts_index = d3_sts_1;
···
 		}
 
 		seq_printf(s, "Dev: %-2d - %-32s\tState: %s [%s]\n",
-			dev_index, dev_map[dev_index].name,
-			dev_map[dev_index].bit_mask & func_dis_index ?
+			index, map[index].name,
+			map[index].bit_mask & func_dis_index ?
 			"Disabled" : "Enabled ",
-			dev_map[dev_index].bit_mask & d3_sts_index ?
+			map[index].bit_mask & d3_sts_index ?
 			"D3" : "D0");
 	}
 	return 0;
···
 static int pmc_pss_state_show(struct seq_file *s, void *unused)
 {
 	struct pmc_dev *pmc = s->private;
+	const struct pmc_bit_map *map = pmc->map->pss;
 	u32 pss = pmc_reg_read(pmc, PMC_PSS);
-	int pss_index;
+	int index;
 
-	for (pss_index = 0; pss_map[pss_index].name; pss_index++) {
+	for (index = 0; map[index].name; index++) {
 		seq_printf(s, "Island: %-2d - %-32s\tState: %s\n",
-			pss_index, pss_map[pss_index].name,
-			pss_map[pss_index].bit_mask & pss ? "Off" : "On");
+			index, map[index].name,
+			map[index].bit_mask & pss ? "Off" : "On");
 	}
 	return 0;
 }
···
 }
 #endif /* CONFIG_DEBUG_FS */
 
-static int pmc_setup_dev(struct pci_dev *pdev)
+static int pmc_setup_dev(struct pci_dev *pdev, const struct pmc_reg_map *map)
 {
 	struct pmc_dev *pmc = &pmc_device;
 	int ret;
···
 		dev_err(&pdev->dev, "error: ioremap failed\n");
 		return -ENOMEM;
 	}
+
+	pmc->map = map;
 
 	/* PMC hardware registers setup */
 	pmc_hw_reg_setup(pmc);
···
 	for_each_pci_dev(pdev) {
 		ent = pci_match_id(pmc_pci_ids, pdev);
 		if (ent)
-			return pmc_setup_dev(pdev);
+			return pmc_setup_dev(pdev, &reg_map);
 	}
 	/* Device not found. */
 	return -ENODEV;