66 struct ssbi {  struct
71 	int (*read)(struct ssbi *, u16 addr, u8 *buf, int len);  argument
72 	int (*write)(struct ssbi *, u16 addr, const u8 *buf, int len);  argument
75 static inline u32 ssbi_readl(struct ssbi *ssbi, u32 reg)  in ssbi_readl()  argument
77 	return readl(ssbi->base + reg);  in ssbi_readl()
80 static inline void ssbi_writel(struct ssbi *ssbi, u32 val, u32 reg)  in ssbi_writel()  argument
82 	writel(val, ssbi->base + reg);  in ssbi_writel()
94 static int ssbi_wait_mask(struct ssbi *ssbi, u32 set_mask, u32 clr_mask)  in ssbi_wait_mask()  argument
100 		val = ssbi_readl(ssbi, SSBI2_STATUS);  in ssbi_wait_mask()
110 ssbi_read_bytes(struct ssbi *ssbi, u16 addr, u8 *buf, int len)  in ssbi_read_bytes()  argument
115 	if (ssbi->controller_type == MSM_SBI_CTRL_SSBI2) {  in ssbi_read_bytes()
116 		u32 mode2 = ssbi_readl(ssbi, SSBI2_MODE2);  in ssbi_read_bytes()
118 		ssbi_writel(ssbi, mode2, SSBI2_MODE2);  in ssbi_read_bytes()
122 		ret = ssbi_wait_mask(ssbi, SSBI_STATUS_READY, 0);  in ssbi_read_bytes()
126 		ssbi_writel(ssbi, cmd, SSBI2_CMD);  in ssbi_read_bytes()
127 		ret = ssbi_wait_mask(ssbi, SSBI_STATUS_RD_READY, 0);  in ssbi_read_bytes()
130 		*buf++ = ssbi_readl(ssbi, SSBI2_RD) & 0xff;  in ssbi_read_bytes()
139 ssbi_write_bytes(struct ssbi *ssbi, u16 addr, const u8 *buf, int len)  in ssbi_write_bytes()  argument
143 	if (ssbi->controller_type == MSM_SBI_CTRL_SSBI2) {  in ssbi_write_bytes()
144 		u32 mode2 = ssbi_readl(ssbi, SSBI2_MODE2);  in ssbi_write_bytes()
146 		ssbi_writel(ssbi, mode2, SSBI2_MODE2);  in ssbi_write_bytes()
150 		ret = ssbi_wait_mask(ssbi, SSBI_STATUS_READY, 0);  in ssbi_write_bytes()
154 		ssbi_writel(ssbi, ((addr & 0xff) << 16) | *buf, SSBI2_CMD);  in ssbi_write_bytes()
155 		ret = ssbi_wait_mask(ssbi, 0, SSBI_STATUS_MCHN_BUSY);  in ssbi_write_bytes()
171 ssbi_pa_transfer(struct ssbi *ssbi, u32 cmd, u8 *data)  in ssbi_pa_transfer()  argument
176 	ssbi_writel(ssbi, cmd, SSBI_PA_CMD);  in ssbi_pa_transfer()
179 		rd_status = ssbi_readl(ssbi, SSBI_PA_RD_STATUS);  in ssbi_pa_transfer()
196 ssbi_pa_read_bytes(struct ssbi *ssbi, u16 addr, u8 *buf, int len)  in ssbi_pa_read_bytes()  argument
204 		ret = ssbi_pa_transfer(ssbi, cmd, buf);  in ssbi_pa_read_bytes()
216 ssbi_pa_write_bytes(struct ssbi *ssbi, u16 addr, const u8 *buf, int len)  in ssbi_pa_write_bytes()  argument
223 		ret = ssbi_pa_transfer(ssbi, cmd, NULL);  in ssbi_pa_write_bytes()
236 	struct ssbi *ssbi = dev_get_drvdata(dev);  in ssbi_read()  local
240 	spin_lock_irqsave(&ssbi->lock, flags);  in ssbi_read()
241 	ret = ssbi->read(ssbi, addr, buf, len);  in ssbi_read()
242 	spin_unlock_irqrestore(&ssbi->lock, flags);  in ssbi_read()
250 	struct ssbi *ssbi = dev_get_drvdata(dev);  in ssbi_write()  local
254 	spin_lock_irqsave(&ssbi->lock, flags);  in ssbi_write()
255 	ret = ssbi->write(ssbi, addr, buf, len);  in ssbi_write()
256 	spin_unlock_irqrestore(&ssbi->lock, flags);  in ssbi_write()
265 	struct ssbi *ssbi;  in ssbi_probe()  local
268 	ssbi = devm_kzalloc(&pdev->dev, sizeof(*ssbi), GFP_KERNEL);  in ssbi_probe()
269 	if (!ssbi)  in ssbi_probe()
272 	ssbi->base = devm_platform_get_and_ioremap_resource(pdev, 0, NULL);  in ssbi_probe()
273 	if (IS_ERR(ssbi->base))  in ssbi_probe()
274 		return PTR_ERR(ssbi->base);  in ssbi_probe()
276 	platform_set_drvdata(pdev, ssbi);  in ssbi_probe()
285 		ssbi->controller_type = MSM_SBI_CTRL_SSBI;  in ssbi_probe()
287 		ssbi->controller_type = MSM_SBI_CTRL_SSBI2;  in ssbi_probe()
289 		ssbi->controller_type = MSM_SBI_CTRL_PMIC_ARBITER;  in ssbi_probe()
295 	if (ssbi->controller_type == MSM_SBI_CTRL_PMIC_ARBITER) {  in ssbi_probe()
296 		ssbi->read = ssbi_pa_read_bytes;  in ssbi_probe()
297 		ssbi->write = ssbi_pa_write_bytes;  in ssbi_probe()
299 		ssbi->read = ssbi_read_bytes;  in ssbi_probe()
300 		ssbi->write = ssbi_write_bytes;  in ssbi_probe()
303 	spin_lock_init(&ssbi->lock);  in ssbi_probe()