7  * microcontroller is System Controller Unit (SCU) which, in particular,
10  * This driver enables IPC channel to SCU.
17 #include <asm/scu.h>
22 /* SCU register map */
33 struct scu {  struct
38  * scu_ipc_send_command() - send command to SCU
39  * @regs: register map of SCU
43  * A write to this register results in an interrupt to the SCU core processor
54  * @regs: register map of SCU
58  * block and error status of the IPC command that was just processed by SCU
115  * Send an IPC command to SCU with input/output data and source/dest pointers.
124 	struct scu *scu;  in scu_ipc_raw_command()  local
131 	scu = dev_get_priv(dev);  in scu_ipc_raw_command()
137 	writel(dptr, &scu->regs->dptr);  in scu_ipc_raw_command()
138 	writel(sptr, &scu->regs->sptr);  in scu_ipc_raw_command()
143 	 * the temporary buffer, and SCU FW will use the inlen to  in scu_ipc_raw_command()
152 	return scu_ipc_cmd(scu->regs, cmd, sub, inbuf, inlen, out, outlen);  in scu_ipc_raw_command()
160  * Issue a simple command to the SCU. Do not use this interface if
162  * by another SCU access by the time this function returns.
164  * This function may sleep. Locking for SCU accesses is handled for
169 	struct scu *scu;  in scu_ipc_simple_command()  local
177 	scu = dev_get_priv(dev);  in scu_ipc_simple_command()
179 	scu_ipc_send_command(scu->regs, sub << 12 | cmd);  in scu_ipc_simple_command()
180 	return scu_ipc_check_status(scu->regs);  in scu_ipc_simple_command()
192  *  Issue a command to the SCU which involves data transfers.
196 	struct scu *scu;  in scu_ipc_command()  local
204 	scu = dev_get_priv(dev);  in scu_ipc_command()
206 	return scu_ipc_cmd(scu->regs, cmd, sub, in, inlen, out, outlen);  in scu_ipc_command()
211 	struct scu *scu = dev_get_priv(dev);  in scu_ipc_probe()  local
213 	scu->regs = syscon_get_first_range(X86_SYSCON_SCU);  in scu_ipc_probe()
219 	{ .compatible = "intel,scu-ipc", .data = X86_SYSCON_SCU },
228 	.priv_auto_alloc_size = sizeof(struct scu),