From: Tero Kristo Date: Wed, 26 Feb 2014 15:30:43 +0000 (+0200) Subject: ARM: OMAP3: PRM: move PRM init code from PM core to the driver X-Git-Url: http://drtracing.org/?a=commitdiff_plain;h=c5180a2b3e26d9b82277986f830c89a50103e65a;p=deliverable%2Flinux.git ARM: OMAP3: PRM: move PRM init code from PM core to the driver Helps to isolate the PRM driver. Signed-off-by: Tero Kristo --- diff --git a/arch/arm/mach-omap2/pm34xx.c b/arch/arm/mach-omap2/pm34xx.c index acb895deb3cc..3ea04ac10d16 100644 --- a/arch/arm/mach-omap2/pm34xx.c +++ b/arch/arm/mach-omap2/pm34xx.c @@ -376,79 +376,10 @@ static void __init omap3_d2d_idle(void) static void __init prcm_setup_regs(void) { - u32 omap3630_en_uart4_mask = cpu_is_omap3630() ? - OMAP3630_EN_UART4_MASK : 0; - u32 omap3630_grpsel_uart4_mask = cpu_is_omap3630() ? - OMAP3630_GRPSEL_UART4_MASK : 0; - /* XXX This should be handled by hwmod code or SCM init code */ omap_ctrl_writel(OMAP3430_AUTOIDLE_MASK, OMAP2_CONTROL_SYSCONFIG); - /* - * Enable control of expternal oscillator through - * sys_clkreq. In the long run clock framework should - * take care of this. - */ - omap2_prm_rmw_mod_reg_bits(OMAP_AUTOEXTCLKMODE_MASK, - 1 << OMAP_AUTOEXTCLKMODE_SHIFT, - OMAP3430_GR_MOD, - OMAP3_PRM_CLKSRC_CTRL_OFFSET); - - /* setup wakup source */ - omap2_prm_write_mod_reg(OMAP3430_EN_IO_MASK | OMAP3430_EN_GPIO1_MASK | - OMAP3430_EN_GPT1_MASK | OMAP3430_EN_GPT12_MASK, - WKUP_MOD, PM_WKEN); - /* No need to write EN_IO, that is always enabled */ - omap2_prm_write_mod_reg(OMAP3430_GRPSEL_GPIO1_MASK | - OMAP3430_GRPSEL_GPT1_MASK | - OMAP3430_GRPSEL_GPT12_MASK, - WKUP_MOD, OMAP3430_PM_MPUGRPSEL); - - /* Enable PM_WKEN to support DSS LPR */ - omap2_prm_write_mod_reg(OMAP3430_PM_WKEN_DSS_EN_DSS_MASK, - OMAP3430_DSS_MOD, PM_WKEN); - - /* Enable wakeups in PER */ - omap2_prm_write_mod_reg(omap3630_en_uart4_mask | - OMAP3430_EN_GPIO2_MASK | OMAP3430_EN_GPIO3_MASK | - OMAP3430_EN_GPIO4_MASK | OMAP3430_EN_GPIO5_MASK | - OMAP3430_EN_GPIO6_MASK | OMAP3430_EN_UART3_MASK | - OMAP3430_EN_MCBSP2_MASK | OMAP3430_EN_MCBSP3_MASK | - OMAP3430_EN_MCBSP4_MASK, - OMAP3430_PER_MOD, PM_WKEN); - /* and allow them to wake up MPU */ - omap2_prm_write_mod_reg(omap3630_grpsel_uart4_mask | - OMAP3430_GRPSEL_GPIO2_MASK | - OMAP3430_GRPSEL_GPIO3_MASK | - OMAP3430_GRPSEL_GPIO4_MASK | - OMAP3430_GRPSEL_GPIO5_MASK | - OMAP3430_GRPSEL_GPIO6_MASK | - OMAP3430_GRPSEL_UART3_MASK | - OMAP3430_GRPSEL_MCBSP2_MASK | - OMAP3430_GRPSEL_MCBSP3_MASK | - OMAP3430_GRPSEL_MCBSP4_MASK, - OMAP3430_PER_MOD, OMAP3430_PM_MPUGRPSEL); - - /* Don't attach IVA interrupts */ - if (omap3_has_iva()) { - omap2_prm_write_mod_reg(0, WKUP_MOD, OMAP3430_PM_IVAGRPSEL); - omap2_prm_write_mod_reg(0, CORE_MOD, OMAP3430_PM_IVAGRPSEL1); - omap2_prm_write_mod_reg(0, CORE_MOD, OMAP3430ES2_PM_IVAGRPSEL3); - omap2_prm_write_mod_reg(0, OMAP3430_PER_MOD, - OMAP3430_PM_IVAGRPSEL); - } - - /* Clear any pending 'reset' flags */ - omap2_prm_write_mod_reg(0xffffffff, MPU_MOD, OMAP2_RM_RSTST); - omap2_prm_write_mod_reg(0xffffffff, CORE_MOD, OMAP2_RM_RSTST); - omap2_prm_write_mod_reg(0xffffffff, OMAP3430_PER_MOD, OMAP2_RM_RSTST); - omap2_prm_write_mod_reg(0xffffffff, OMAP3430_EMU_MOD, OMAP2_RM_RSTST); - omap2_prm_write_mod_reg(0xffffffff, OMAP3430_NEON_MOD, OMAP2_RM_RSTST); - omap2_prm_write_mod_reg(0xffffffff, OMAP3430_DSS_MOD, OMAP2_RM_RSTST); - omap2_prm_write_mod_reg(0xffffffff, OMAP3430ES2_USBHOST_MOD, OMAP2_RM_RSTST); - - /* Clear any pending PRCM interrupts */ - omap2_prm_write_mod_reg(0, OCP_MOD, OMAP3_PRM_IRQSTATUS_MPU_OFFSET); + omap3_prm_init_pm(cpu_is_omap3630(), omap3_has_iva()); /* * We need to idle iva2_pwrdm even on am3703 with no iva2. diff --git a/arch/arm/mach-omap2/prm3xxx.c b/arch/arm/mach-omap2/prm3xxx.c index 4d93b844bcc4..48218a450cb0 100644 --- a/arch/arm/mach-omap2/prm3xxx.c +++ b/arch/arm/mach-omap2/prm3xxx.c @@ -274,6 +274,96 @@ void __init omap3_prm_reset_modem(void) omap2_prm_write_mod_reg(0, CORE_MOD, OMAP2_RM_RSTCTRL); } +/** + * omap3_prm_init_pm - initialize PM related registers for PRM + * @has_uart4: SoC has UART4 + * @has_iva: SoC has IVA + * + * Initializes PRM registers for PM use. Called from PM init. + */ +void __init omap3_prm_init_pm(bool has_uart4, bool has_iva) +{ + u32 en_uart4_mask; + u32 grpsel_uart4_mask; + + /* + * Enable control of expternal oscillator through + * sys_clkreq. In the long run clock framework should + * take care of this. + */ + omap2_prm_rmw_mod_reg_bits(OMAP_AUTOEXTCLKMODE_MASK, + 1 << OMAP_AUTOEXTCLKMODE_SHIFT, + OMAP3430_GR_MOD, + OMAP3_PRM_CLKSRC_CTRL_OFFSET); + + /* setup wakup source */ + omap2_prm_write_mod_reg(OMAP3430_EN_IO_MASK | OMAP3430_EN_GPIO1_MASK | + OMAP3430_EN_GPT1_MASK | OMAP3430_EN_GPT12_MASK, + WKUP_MOD, PM_WKEN); + /* No need to write EN_IO, that is always enabled */ + omap2_prm_write_mod_reg(OMAP3430_GRPSEL_GPIO1_MASK | + OMAP3430_GRPSEL_GPT1_MASK | + OMAP3430_GRPSEL_GPT12_MASK, + WKUP_MOD, OMAP3430_PM_MPUGRPSEL); + + /* Enable PM_WKEN to support DSS LPR */ + omap2_prm_write_mod_reg(OMAP3430_PM_WKEN_DSS_EN_DSS_MASK, + OMAP3430_DSS_MOD, PM_WKEN); + + if (has_uart4) { + en_uart4_mask = OMAP3630_EN_UART4_MASK; + grpsel_uart4_mask = OMAP3630_GRPSEL_UART4_MASK; + } + + /* Enable wakeups in PER */ + omap2_prm_write_mod_reg(en_uart4_mask | + OMAP3430_EN_GPIO2_MASK | + OMAP3430_EN_GPIO3_MASK | + OMAP3430_EN_GPIO4_MASK | + OMAP3430_EN_GPIO5_MASK | + OMAP3430_EN_GPIO6_MASK | + OMAP3430_EN_UART3_MASK | + OMAP3430_EN_MCBSP2_MASK | + OMAP3430_EN_MCBSP3_MASK | + OMAP3430_EN_MCBSP4_MASK, + OMAP3430_PER_MOD, PM_WKEN); + + /* and allow them to wake up MPU */ + omap2_prm_write_mod_reg(grpsel_uart4_mask | + OMAP3430_GRPSEL_GPIO2_MASK | + OMAP3430_GRPSEL_GPIO3_MASK | + OMAP3430_GRPSEL_GPIO4_MASK | + OMAP3430_GRPSEL_GPIO5_MASK | + OMAP3430_GRPSEL_GPIO6_MASK | + OMAP3430_GRPSEL_UART3_MASK | + OMAP3430_GRPSEL_MCBSP2_MASK | + OMAP3430_GRPSEL_MCBSP3_MASK | + OMAP3430_GRPSEL_MCBSP4_MASK, + OMAP3430_PER_MOD, OMAP3430_PM_MPUGRPSEL); + + /* Don't attach IVA interrupts */ + if (has_iva) { + omap2_prm_write_mod_reg(0, WKUP_MOD, OMAP3430_PM_IVAGRPSEL); + omap2_prm_write_mod_reg(0, CORE_MOD, OMAP3430_PM_IVAGRPSEL1); + omap2_prm_write_mod_reg(0, CORE_MOD, OMAP3430ES2_PM_IVAGRPSEL3); + omap2_prm_write_mod_reg(0, OMAP3430_PER_MOD, + OMAP3430_PM_IVAGRPSEL); + } + + /* Clear any pending 'reset' flags */ + omap2_prm_write_mod_reg(0xffffffff, MPU_MOD, OMAP2_RM_RSTST); + omap2_prm_write_mod_reg(0xffffffff, CORE_MOD, OMAP2_RM_RSTST); + omap2_prm_write_mod_reg(0xffffffff, OMAP3430_PER_MOD, OMAP2_RM_RSTST); + omap2_prm_write_mod_reg(0xffffffff, OMAP3430_EMU_MOD, OMAP2_RM_RSTST); + omap2_prm_write_mod_reg(0xffffffff, OMAP3430_NEON_MOD, OMAP2_RM_RSTST); + omap2_prm_write_mod_reg(0xffffffff, OMAP3430_DSS_MOD, OMAP2_RM_RSTST); + omap2_prm_write_mod_reg(0xffffffff, OMAP3430ES2_USBHOST_MOD, + OMAP2_RM_RSTST); + + /* Clear any pending PRCM interrupts */ + omap2_prm_write_mod_reg(0, OCP_MOD, OMAP3_PRM_IRQSTATUS_MPU_OFFSET); +} + /** * omap3xxx_prm_reconfigure_io_chain - clear latches and reconfigure I/O chain * diff --git a/arch/arm/mach-omap2/prm3xxx.h b/arch/arm/mach-omap2/prm3xxx.h index c5f9cbabb5bb..bc37d42a8704 100644 --- a/arch/arm/mach-omap2/prm3xxx.h +++ b/arch/arm/mach-omap2/prm3xxx.h @@ -167,6 +167,7 @@ void omap3xxx_prm_iva_idle(void); void omap3_prm_reset_modem(void); int omap3xxx_prm_clear_global_cold_reset(void); void omap3_prm_save_scratchpad_contents(u32 *ptr); +void omap3_prm_init_pm(bool has_uart4, bool has_iva); #endif /* __ASSEMBLER */