iv/linux
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity
linux/arch/arm/mach-davinci/include/mach/common.h

68 lines
1.8 KiB
C
Raw Normal View History

[ARM] 4303/3: base kernel support for TI DaVinci Add base kernel support for the TI DaVinci platform. This patch only includes interrupts, timers, CPU identification, serial support and basic power and sleep controller init. More drivers to come. Signed-off-by: Kevin Hilman <khilman@mvista.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2007-04-30 19:37:19 +01:00
/*
* Header for code common to all DaVinci machines.
*
* Author: Kevin Hilman, MontaVista Software, Inc. <source@mvista.com>
*
* 2007 (c) MontaVista Software, Inc. This file is licensed under
* the terms of the GNU General Public License version 2. This program
* is licensed "as is" without any warranty of any kind, whether express
* or implied.
*/
#ifndef __ARCH_ARM_MACH_DAVINCI_COMMON_H
#define __ARCH_ARM_MACH_DAVINCI_COMMON_H
struct sys_timer;
extern struct sys_timer davinci_timer;
davinci: update DM644x support in preparation for more SoCs Rework DM644x code into SoC specific and board specific parts. This is also to generalize the structure a bit so it's easier to add support for new SoCs in the DaVinci family. Signed-off-by: Kevin Hilman <khilman@deeprootsystems.com>
2009-04-14 11:30:11 -05:00
extern void davinci_irq_init(void);
davinci: Move interrupt ctlr info to SoC infrastructure Use the SoC infrastructure to hold the interrupt controller information (i.e., base address, default priorities, interrupt controller type, and the number of IRQs). The interrupt controller base, although initially put in the soc_info structure's intc_base field, is eventually put in the global 'davinci_intc_base' so the low-level interrupt code can access it without a dereference. These changes enable the SoC default irq priorities to be put in the SoC-specific files, and the interrupt controller to be at any base address. Signed-off-by: Mark A. Greer <mgreer@mvista.com> Signed-off-by: Kevin Hilman <khilman@deeprootsystems.com>
2009-04-15 12:40:00 -07:00
extern void __iomem *davinci_intc_base;
davinci: update DM644x support in preparation for more SoCs Rework DM644x code into SoC specific and board specific parts. This is also to generalize the structure a bit so it's easier to add support for new SoCs in the DaVinci family. Signed-off-by: Kevin Hilman <khilman@deeprootsystems.com>
2009-04-14 11:30:11 -05:00
/* parameters describe VBUS sourcing for host mode */
extern void setup_usb(unsigned mA, unsigned potpgt_msec);
ARM: DaVinci: usb setup Declare the musb_hdrc platform device for DaVinci. Signed-off-by: David Brownell <dbrownell@users.sourceforge.net> Signed-off-by: Kevin Hilman <khilman@deeprootsystems.com>
2008-09-07 23:41:57 -07:00
/* parameters describe VBUS sourcing for host mode */
extern void setup_usb(unsigned mA, unsigned potpgt_msec);
davinci: Add base address and timer flexibility The davinci timer code currently hardcodes the timer register base addresses, the timer irq numbers, and the timers to use for clock events and clocksource. This won't work for some a new SoC so put those values into the soc_info structure and set them up in the SoC-specific files. Signed-off-by: Mark A. Greer <mgreer@mvista.com> Signed-off-by: Kevin Hilman <khilman@deeprootsystems.com>
2009-04-15 12:40:11 -07:00
struct davinci_timer_instance {
void __iomem *base;
u32 bottom_irq;
u32 top_irq;
};
struct davinci_timer_info {
struct davinci_timer_instance *timers;
unsigned int clockevent_id;
unsigned int clocksource_id;
};
davinci: Encapsulate SoC-specific data in a structure Create a structure to encapsulate SoC-specific information. This will assist in generalizing code so it can be used by different SoCs that have similar hardware but with minor differences such as having a different base address. The idea is that the code for each SoC fills out a structure with the correct information. The board-specific code then calls the SoC init routine which in turn will call a common init routine that makes a copy of the structure, maps in I/O regions, etc. After initialization, code can get a pointer to the structure by calling davinci_get_soc_info(). Eventually, the common init routine will make a copy of all of the data pointed to by the structure so the original data can be made __init_data. That way the data for SoC's that aren't being used won't consume memory for the entire life of the kernel. The structure will be extended in subsequent patches but initially, it holds the map_desc structure for any I/O regions the SoC/board wants statically mapped. Signed-off-by: Mark A. Greer <mgreer@mvista.com> Signed-off-by: Kevin Hilman <khilman@deeprootsystems.com>
2009-04-15 12:38:58 -07:00
/* SoC specific init support */
struct davinci_soc_info {
struct map_desc *io_desc;
unsigned long io_desc_num;
davinci: Support JTAG ID register at any address The Davinci cpu_is_davinci_*() macros use the SoC part number and variant retrieved from the JTAG ID register to determine the type of cpu that the kernel is running on. Currently, the code to read the JTAG ID register assumes that the register is always at the same base address. This isn't true on some newer SoCs. To solve this, have the SoC-specific code set the JTAG ID register base address in soc_info structure and add a 'cpu_id' member to it. 'cpu_id' will be used by the cpu_is_davinci_*() macros to match the cpu id. Also move the info used to identify the cpu type into the SoC-specific code to keep all SoC-specific code together. The common code will read the JTAG ID register, search through an array of davinci_id structures to identify the cpu type. Once identified, it will set the 'cpu_id' member of the soc_info structure to the proper value and the cpu_is_davinci_*() macros will now work. Signed-off-by: Mark A. Greer <mgreer@mvista.com> Signed-off-by: Kevin Hilman <khilman@deeprootsystems.com>
2009-04-15 12:39:09 -07:00
u32 cpu_id;
u32 jtag_id;
void __iomem *jtag_id_base;
struct davinci_id *ids;
unsigned long ids_num;
davinci: Add clock init call to common init routine All of the davinci SoCs need to call davinci_clk_init() so put the call in the common init routine. Signed-off-by: Mark A. Greer <mgreer@mvista.com> Signed-off-by: Kevin Hilman <khilman@deeprootsystems.com>
2009-04-15 12:39:23 -07:00
struct davinci_clk *cpu_clks;
davinci: Add support for multiple PSCs The current code to support the DaVinci Power and Sleep Controller (PSC) assumes that there is only one controller. This assumption is no longer valid so expand the support to allow greater than one PSC. To accomplish this, put the base addresses for the PSCs in the SoC infrastructure so it can be referenced by the PSC code. This also requires adding an extra parameter to davinci_psc_config() to specify the PSC that is to be enabled/disabled. Signed-off-by: Mark A. Greer <mgreer@mvista.com> Signed-off-by: Kevin Hilman <khilman@deeprootsystems.com>
2009-04-15 12:39:33 -07:00
void __iomem **psc_bases;
unsigned long psc_bases_num;
davinci: Move pinmux setup info to SoC infrastructure The pinmux register base and setup can be different for different SoCs so move the pinmux reg base, pinmux table (and its size) to the SoC infrastructure. Signed-off-by: Mark A. Greer <mgreer@mvista.com> Signed-off-by: Kevin Hilman <khilman@deeprootsystems.com>
2009-04-15 12:39:48 -07:00
void __iomem *pinmux_base;
const struct mux_config *pinmux_pins;
unsigned long pinmux_pins_num;
davinci: Move interrupt ctlr info to SoC infrastructure Use the SoC infrastructure to hold the interrupt controller information (i.e., base address, default priorities, interrupt controller type, and the number of IRQs). The interrupt controller base, although initially put in the soc_info structure's intc_base field, is eventually put in the global 'davinci_intc_base' so the low-level interrupt code can access it without a dereference. These changes enable the SoC default irq priorities to be put in the SoC-specific files, and the interrupt controller to be at any base address. Signed-off-by: Mark A. Greer <mgreer@mvista.com> Signed-off-by: Kevin Hilman <khilman@deeprootsystems.com>
2009-04-15 12:40:00 -07:00
void __iomem *intc_base;
int intc_type;
u8 *intc_irq_prios;
unsigned long intc_irq_num;
davinci: Add base address and timer flexibility The davinci timer code currently hardcodes the timer register base addresses, the timer irq numbers, and the timers to use for clock events and clocksource. This won't work for some a new SoC so put those values into the soc_info structure and set them up in the SoC-specific files. Signed-off-by: Mark A. Greer <mgreer@mvista.com> Signed-off-by: Kevin Hilman <khilman@deeprootsystems.com>
2009-04-15 12:40:11 -07:00
struct davinci_timer_info *timer_info;
davinci: Add watchdog base address flexibility The watchdog code currently hardcodes the base address of the timer its using. To support new SoCs, make it support timers at any address. Use the soc_info structure to do this. Signed-off-by: Mark A. Greer <mgreer@mvista.com> Signed-off-by: Kevin Hilman <khilman@deeprootsystems.com>
2009-04-15 12:40:21 -07:00
void __iomem *wdt_base;
davinci: Encapsulate SoC-specific data in a structure Create a structure to encapsulate SoC-specific information. This will assist in generalizing code so it can be used by different SoCs that have similar hardware but with minor differences such as having a different base address. The idea is that the code for each SoC fills out a structure with the correct information. The board-specific code then calls the SoC init routine which in turn will call a common init routine that makes a copy of the structure, maps in I/O regions, etc. After initialization, code can get a pointer to the structure by calling davinci_get_soc_info(). Eventually, the common init routine will make a copy of all of the data pointed to by the structure so the original data can be made __init_data. That way the data for SoC's that aren't being used won't consume memory for the entire life of the kernel. The structure will be extended in subsequent patches but initially, it holds the map_desc structure for any I/O regions the SoC/board wants statically mapped. Signed-off-by: Mark A. Greer <mgreer@mvista.com> Signed-off-by: Kevin Hilman <khilman@deeprootsystems.com>
2009-04-15 12:38:58 -07:00
};
extern struct davinci_soc_info davinci_soc_info;
extern void davinci_common_init(struct davinci_soc_info *soc_info);
[ARM] 4303/3: base kernel support for TI DaVinci Add base kernel support for the TI DaVinci platform. This patch only includes interrupts, timers, CPU identification, serial support and basic power and sleep controller init. More drivers to come. Signed-off-by: Kevin Hilman <khilman@mvista.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2007-04-30 19:37:19 +01:00
#endif /* __ARCH_ARM_MACH_DAVINCI_COMMON_H */
Reference in New Issue Copy Permalink