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https://github.com/team-infusion-developers/android_kernel_samsung_msm8976.git
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ea0f8feaa0
The following moves the creation of IPR interupts into setup-7750.c and updates a few other things to make it all work after the "Drop CPU subtype IRQ headers" commit. It boots and runs fine on my titan board. - adds an ipr_idx to the ipr_data and uses a function in the subtype code to calculate the address of the IPR registers - adds a function to enable individual interrupt mode for externals in the subtype code and calls that from the titan board code instead of doing it directly. - I changed the shift in the ipr_data to be the actual # of bits to shift, instead of the numnber / 4 - made it easier to match with the manual. Signed-off-by: Jamie Lenehan <lenehan@twibble.org> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
70 lines
1.9 KiB
C
70 lines
1.9 KiB
C
/*
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* Interrupt handling for IPR-based IRQ.
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*
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* Copyright (C) 1999 Niibe Yutaka & Takeshi Yaegashi
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* Copyright (C) 2000 Kazumoto Kojima
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* Copyright (C) 2003 Takashi Kusuda <kusuda-takashi@hitachi-ul.co.jp>
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* Copyright (C) 2006 Paul Mundt
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*
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* Supported system:
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* On-chip supporting modules (TMU, RTC, etc.).
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* On-chip supporting modules for SH7709/SH7709A/SH7729/SH7300.
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* Hitachi SolutionEngine external I/O:
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* MS7709SE01, MS7709ASE01, and MS7750SE01
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*
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* This file is subject to the terms and conditions of the GNU General Public
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* License. See the file "COPYING" in the main directory of this archive
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* for more details.
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*/
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#include <linux/init.h>
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#include <linux/irq.h>
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#include <linux/module.h>
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#include <linux/io.h>
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#include <linux/interrupt.h>
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static void disable_ipr_irq(unsigned int irq)
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{
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struct ipr_data *p = get_irq_chip_data(irq);
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/* Set the priority in IPR to 0 */
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ctrl_outw(ctrl_inw(p->addr) & (0xffff ^ (0xf << p->shift)), p->addr);
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}
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static void enable_ipr_irq(unsigned int irq)
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{
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struct ipr_data *p = get_irq_chip_data(irq);
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/* Set priority in IPR back to original value */
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ctrl_outw(ctrl_inw(p->addr) | (p->priority << p->shift), p->addr);
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}
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static struct irq_chip ipr_irq_chip = {
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.name = "IPR",
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.mask = disable_ipr_irq,
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.unmask = enable_ipr_irq,
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.mask_ack = disable_ipr_irq,
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};
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void make_ipr_irq(struct ipr_data *table, unsigned int nr_irqs)
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{
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int i;
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for (i = 0; i < nr_irqs; i++) {
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unsigned int irq = table[i].irq;
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table[i].addr = map_ipridx_to_addr(table[i].ipr_idx);
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/* could the IPR index be mapped, if not we ignore this */
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if (table[i].addr == 0)
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continue;
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disable_irq_nosync(irq);
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set_irq_chip_and_handler_name(irq, &ipr_irq_chip,
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handle_level_irq, "level");
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set_irq_chip_data(irq, &table[i]);
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enable_ipr_irq(irq);
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}
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}
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EXPORT_SYMBOL(make_ipr_irq);
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#if !defined(CONFIG_CPU_HAS_PINT_IRQ)
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int ipr_irq_demux(int irq)
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{
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return irq;
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}
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#endif
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